Fastening element

Abstract

A fastening element (50) which can be mounted without any tools or screws being required, comprising an elastic main body (10) which is designed and configured to latch into a groove (32) in a carrying rail (30), wherein the elastic main body (10) has a positioning element (40) for inserting into the groove (32) and also has holding means (52) for holding additional components such as pipes, cables or polygonal profiles, wherein the positioning element (40) has specific geometrical features which allow the fastening element (50) to be mounted in the groove (32) in the carrying rail (30) without any tools or screws being required. According to the invention, the positioning element (40) can be flexibly positioned in a sliding manner along a longitudinal extent of the groove (32), wherein the positioning element (40) has a spring mechanism (90) for stabilizing the connection in a desired position, wherein the spring mechanism (90) generates elastic restoring forces in order to fix the fastening element (50) in the groove (32) in the carrying rail (30).

Description

[0001] Fastener

[0002] The invention relates to a fastening element that can be mounted without tools or screws, according to the preamble of claim 1.

[0003] Fasteners are generally used for the secure mounting and fixing of components such as pipes or cables to support rails, frame elements, or other similar structural elements. They are essential in numerous applications for safety reasons alone, as improper fastening or routing poses a significant safety risk. This can result in tripping hazards and obstructive obstacles, which in the worst-case scenario can lead to falls from scaffolding, for example.

[0004] Their primary purpose is to at least partially grip and secure pipes, cable bundles, conduits, or similar elongated objects to mounting rails or profiles, thereby enabling, for example, the orderly and stable routing of conduits or cables. To achieve this gripping action, the fastening elements often incorporate retaining devices with a sufficiently elastic structure.

[0005] Common fasteners are used in a wide variety of applications. For example, they can be used in industrial or construction applications to securely mount various components or devices to supporting structures, or in frame and scaffolding construction, pipeline construction, and event technology to stabilize and secure connections between different profiles and beams. Many common fasteners use screws or threaded elements to securely fix the base body in the groove of the support rail. This typically requires the use of tools such as screwdrivers or wrenches.

[0006] The need for tools and screws for assembly significantly increases the time and labor required. This results in increased assembly effort. Additional costs arise from the purchase and maintenance of tools, as well as from longer assembly times.

[0007] While US6622976B1, for example, concerns a fastener that can be installed without tools or screws, it has several other disadvantages. Fasteners like those in US6622976B1 often require complicated handling and are not always able to position themselves flexibly and stably in various slot profiles. The fastener is fixed in place by mechanical snap-in or clamping mechanisms of a hook-shaped element.

[0008] Due to their design, disassembly is either prevented or made more difficult. Furthermore, they do not offer sufficient elastic holding force to securely fix various components, resulting in unreliable fastening and limited usability.

[0009] Furthermore, the solution lacks sufficient flexibility regarding the positioning of the mounting element along the longitudinal axis of the mounting rail. This can lead to increased costs overall. Assembly and adjustment can often be complicated and prone to errors due to the numerous individual parts and the need for precise positioning based on predefined mounting positions.

[0010] In summary, well-known fastening elements have significant disadvantages, for example in terms of assembly effort, costs and complexity.

[0011] The aim of the invention is to overcome these and other disadvantages of the prior art and to provide an improved fastening element that is particularly cost-effective and enables simple, flexible and stable positioning in various groove profiles.

[0012] The main features of the invention are specified in the characterizing part of claim 1. Embodiments are the subject of further claims 2 to 15.In a tool- and screwless-mountable fastening element comprising an elastic base body designed and configured to snap into a groove of a support rail, wherein the elastic base body has a positioning element for insertion into the groove and retaining means for holding additional components such as pipes, cables or polygon profiles, wherein the positioning element has specific geometric features that enable tool- and screwless mounting of the fastening element in the groove of the support rail, it is provided according to the invention that the positioning element can be flexibly positioned sliding along a longitudinal extension of the groove, wherein the positioning element has a spring mechanism for stabilizing the connection in a desired position, wherein the spring mechanism generates elastic restoring forces to fix the fastening element in the groove of the support rail.

[0013] According to the invention, the fastening element can be adapted to the groove by means of specific geometric features and generate elastic holding forces through its spring mechanism, ensuring the secure fixation of additional components. The positioning element can be easily snapped into the groove of a mounting rail (e.g., a standard rail) and flexibly positioned along it by sliding. This functionality significantly simplifies the proper fastening of additional components such as pipes, cables, or polygon profiles. Thanks to its elastic behavior and / or specific geometric features that can be adapted based on the grooves, the fastening element according to the invention can hold the additional components while simultaneously being securely fixed to the mounting rail via its positioning element.The combination of features defined according to the invention achieves several advantageous effects, which are discussed in more detail below.

[0014] The specific geometric features relate to the special shapes and structures of the positioning element of the fastener, which enable the element to be securely mounted in the groove of a mounting rail without the use of tools or screws. These features may preferably include special locking edges, elastic arms, or snap-in mechanisms, which, for example, can be an integral part of the positioning element. These specific features according to the invention enable quick and easy installation of the fastener, thus reducing assembly time and increasing efficiency. The geometric features ensure or support that the fastener sits firmly and securely in the groove without the need for additional fixing elements such as screws.

[0015] The spring mechanism according to the invention preferably comprises an elastic element within the positioning element, enabling automatic adjustment and stabilization of the fastening element within the groove of a mounting rail. This spring mechanism essentially serves to hold the fastening element in a defined position within the groove by means of elastic restoring forces, without the need for additional tools or screws. When the fastening element is inserted into the groove, the spring mechanism is compressed and generates elastic restoring forces that press the fastening element against the inner walls of the groove. These forces ensure stable positioning and prevent the fastening element from unintentionally slipping. The spring mechanism can, for example, be made of metal (e.g., steel).The spring mechanism consists of spring steel or an elastic plastic material that provides sufficient restoring force to fix the fastening element in the groove. The spring mechanism can preferably be formed integrally with the positioning element, which in turn can be formed integrally with the base body.

[0016] In detail, the spring mechanism can preferably be designed as a coil spring, leaf spring, or a similar elastic structure that is tensioned when inserted into the groove, thereby generating a restoring force. Preferably, a coil spring can be arranged in a recess of the positioning element, which is compressed when the fastening element or positioning element is inserted into the groove. Alternatively or additionally, a leaf spring can preferably be provided, which is attached laterally to the positioning element and provides the necessary restoring force through its elastic bending. Alternatively or additionally, the spring mechanism can preferably comprise an elastic plastic that fulfills a similar function to a metal spring but is lighter and less expensive to manufacture.Preferably, the spring mechanism can be an integral part of the positioning element and can either be integrally and uniformly bonded to it or designed as a replaceable element. Overall, the spring mechanism of the positioning element according to the invention provides a mechanism that generates elastic restoring forces to stabilize the fastening element in the groove of the support rail and automatically return it to its original position. This can preferably be achieved by integrated springs, spring arms, or similar elastic components. The spring mechanism ensures that the fastening element is held securely and stably in the groove, even under vibration or dynamic movements. Due to the elastic nature of the spring mechanism, the fastening element can adapt to varying tolerances and loads, thus increasing its flexibility and reliability.Furthermore, the fasteners are reusable, which can lead to a significant cost advantage and is also very sustainable.

[0017] Elastic restoring forces are the forces generated by the spring mechanism described above, which serve to return the fastener to its original position after deformation or movement. These forces preferably act continuously and ensure that the fastener is always firmly and securely seated in the groove once the desired position along the support rail is reached. Due to this continuous securing, the elastic restoring forces ensure that the fastener remains stable even under dynamic loads such as vibrations. The generated elastic restoring forces allow the fastener to automatically adapt to variations in groove width or uneven surfaces, which significantly simplifies installation and considerably improves durability.

[0018] The flexible sliding bearing allows for quick and easy assembly and disassembly of the fastener without the need for tools or screws. This effectively saves time and effort for the installer, especially in environments requiring frequent adjustments. The fastener can be easily moved along the groove to find the optimal fixing position. This increases flexibility when installing and adapting components to different requirements and layouts. Because the same fastener can be used in different positions and for different applications, the number of specific fasteners required is reduced. This leads to lower inventory costs and simplified logistics.The flexible sliding bearing also offers improved adaptability, allowing the fastener to be adjusted to different profile types and sizes. This makes the system more versatile overall and suitable for a wide range of applications. Combined with the described elastic spring mechanism and restoring forces, the sliding positioning and bearing mechanism ensures that the fastener is positioned gently and evenly in the groove. This reduces the risk of damage to the groove or the attached components, thus protecting them. The combination of elastic spring mechanism and sliding positioning also advantageously guarantees a stable and secure fastening. The elastic restoring forces hold the fastener firmly in position, even under strong vibrations or movements.Since the fastening element can be easily installed and removed without being plastically deformed or destroyed, it is reusable. This makes the fastening element according to the invention not only cost-efficient but also environmentally friendly, as it generates less waste. The simple and quick installation further reduces production time and increases efficiency. This is particularly advantageous, for example, in industrial applications where time savings and efficiency are of paramount importance. The flexibly sliding mounting of a fastening element in a support rail, as described in the invention, thus offers numerous advantages that significantly improve efficiency, adaptability, stability, and user-friendliness. These advantages make the system particularly suitable for a wide range of applications, from industrial plants to everyday fastening tasks.

[0019] According to a preferred embodiment, the retaining elements of the fastener can have an elastic structure. Preferably, the retaining elements can be formed by a clamp band made of spring steel or plastic, or a combination of both materials. The use of elastic retaining elements in a fastener allows for flexible adaptation to different additional components, facilitates assembly, and simultaneously reduces labor. Elastic retaining elements dampen or absorb vibrations and increase stability, thereby protecting the mounted components from damage and extending their service life. They prevent material fatigue and breakage, protect the surfaces of the additional components, and compensate for manufacturing tolerances.Overall, elastic retaining devices improve the efficiency and reliability of the fastening system while simultaneously reducing the costs of assembly and maintenance.

[0020] Preferably, the retaining elements of the fastener can be provided with a reinforcing structure. Equipping the retaining elements of a fastener with a reinforcing structure increases their strength and stability, enabling them to bear higher loads and withstand greater mechanical stresses while maintaining a certain degree of elasticity. This minimizes the risk of deformation or breakage, especially in demanding applications. Additional reinforcements thus improve the durability of the retaining elements, reduce maintenance and replacement costs, and ensure a reliable and lasting fastening of the components. Furthermore, they can enable more precise positioning and fixation of the components, increasing the efficiency and safety of the entire fastening solution.

[0021] According to another preferred embodiment, the base body of the fastener can be made of a metallic material and / or a plastic. The option of manufacturing the base body from metal or plastic allows for broad adaptation to different requirements regarding strength, weight, and cost. For example, plastic can be advantageous in corrosive environments, while metal can withstand higher mechanical loads. The choice of material offers flexibility for various applications, e.g., metal for industrial applications requiring high strength and plastic for applications requiring lightness and corrosion resistance. A combined structure of both materials can be particularly advantageous and gentle on the additional components it accommodates, for example, if the side of the base body facing the components is coated with plastic.The possibility of using more cost-effective materials such as plastic can also reduce the manufacturing costs of the fastener.

[0022] According to a further preferred embodiment, the positioning element can have a guide to improve the sliding properties of the fastener. More preferably, the base body of the fastener can alternatively or additionally be provided with a surface coating that reduces friction during guidance between the fastener and the mounting rail. The guide can preferably be formed by reduced contact surfaces between the positioning element and the mounting rail. Overall, these measures can significantly improve the sliding properties. The guide of the positioning element improves the sliding properties along the groove. At the same time, this ensures increased precision in positioning the fastener.The reduced friction also advantageously results in less resistance and wear during positioning, thus extending the service life of the fastener. Furthermore, the improved sliding properties facilitate the installation and adjustment of the fastener, thereby reducing overall working time.

[0023] Preferably, the positioning element of the fastener can be an integral part of a one-piece molded component, wherein the one-piece molded component can be in the form of a strip, particularly a spring steel strip, and wherein the positioning element can be produced by bending the base body. Due to the one-piece and material-single design of the molded component, the number of required individual parts and connection points is reduced. Furthermore, simplified production processes result from the one-piece construction, and the shape of the positioning element, or its specific geometric features, can be produced by simple bending processes. Fewer connection points mean fewer potential weak points and increase robustness, resulting in greater reliability. At the same time, manufacturing costs are reduced and logistics are simplified.

[0024] Preferably, the positioning element's specific geometric features comprise at least a neck section and an adjoining bulbous section, wherein the neck section is formed by a taper at the level of an upper opening of the groove and the bulbous section is formed by an expansion in the region of a base of the support rail. Preferably, the positioning element rests with its bulbous section at least partially on a base of the groove, with the bulbous section projecting towards lateral recesses of the groove. The specific geometric features of the positioning element, comprising a neck section and an adjoining bulbous section, offer several technical advantages.The neck section, formed by a taper at the level of the upper opening of the groove, allows for easy insertion of the positioning element into the groove and ensures secure guidance and centering. The bulbous section, formed by an extension in the area of ​​the base of the mounting rail, ensures stable and even contact with the bottom of the groove. This increases the contact area and thus the stability and load-bearing capacity of the fastener. The lateral projection of the bulbous section into the recesses of the groove creates additional mechanical anchorage, preventing twisting or displacement of the fastener. This design enables reliable and stable fixing, improves load distribution, and minimizes the risk of pull-out or loosening, thereby increasing the overall efficiency and safety of the fastening solution.

[0025] Preferably, the specific geometric features of the base body are designed to allow for multiple uses in different groove sizes. The design of a neck section and an adjoining bulbous section that fits into and presses into the groove exemplifies such a design variant for multiple uses in different groove sizes and profiles. The specific geometric features of the base body that enable multiple uses in different groove sizes offer significant technical advantages because this versatility reduces the need to stock different fasteners for different groove sizes, thus considerably reducing inventory and costs. The adaptability of the base body to different groove sizes facilitates assembly and allows for flexible application in various installation environments.This saves time and effort in selecting and using the appropriate fastener. Furthermore, the ability to reuse fasteners increases procurement efficiency and reduces the complexity of the installation process. Overall, these features significantly improve the cost-effectiveness and flexibility of the fastening system.

[0026] In a further preferred embodiment, the positioning element of the fastening element can additionally comprise laterally projecting support elements for bracing in the groove and reinforcing the spring mechanism. Preferably, the support elements can be arranged circumferentially on the positioning element. The laterally projecting support elements of the positioning element advantageously increase the stability of the fastening element by providing additional support in the groove of the mounting rail. This improves the load distribution and prevents the fastening element from tilting or slipping under load. The support elements also reinforce the spring mechanism, thereby increasing the elastic restoring forces and ensuring even more secure fixation in the groove.By arranging the support elements circumferentially around the fasteners, a uniform distribution of forces is achieved, further improving the overall mechanical stability and durability of the fastener. Consequently, these features contribute to greater reliability and longevity of the fastening solution and further enhance the safety of the mounted components.

[0027] According to another preferred embodiment, the positioning element can include a spring for automatic adjustment along the groove. The spring advantageously enables automatic adjustment of the fastener within the groove, which significantly simplifies and speeds up assembly, as no manual adjustments are required. Furthermore, the automatic adjustment by the spring ensures consistently optimal positioning of the fastener, increasing the stability and security of the entire fastening. In addition, the combined spring mechanism improves the fastener's ability to adapt to various tolerances and inaccuracies of the groove, thus ensuring reliable and permanent fixation. This embodiment therefore increases the user-friendliness, efficiency, and safety of the fastening solution.

[0028] According to a further preferred embodiment of the invention, the support rail can be a standard rail or a top-hat profile rail, wherein the top-hat profile rail can have at least one recess for receiving and interacting with a locking structure of the fastening element.

[0029] A standard rail or profile is a standardized profile typically used in industrial applications. These standard rails are available in various cross-sections and sizes and are often made of materials such as aluminum or steel. They feature standardized grooves for attaching various components and accessories.

[0030] Designing the mounting rail as a standard rail or top-hat rail offers several technical advantages. Compatibility with standard rails enables widespread and standardized use, increasing interchangeability and flexibility during installation. The availability and acceptance of standard rails in various industrial applications also facilitate the integration of the fastener into existing systems. Furthermore, using a top-hat rail with recesses for receiving and interacting with a locking mechanism of the fastener offers additional safety and stability benefits. The locking mechanism ensures a firm and secure fixation of the fastener, prevents unintentional loosening, and increases mechanical strength. This improves the reliability and longevity of the mounting solution, especially in applications with high vibration or load requirements.Overall, these features enable a versatile, safe and standardized fastening element that can be used effectively in various industrial environments.

[0031] According to a further preferred embodiment, the positioning element of the base body can be fixed in the groove of the support rail by means of a positive and / or non-positive locking mechanism, whereby the positioning element can be inserted completely within the groove, such that the positioning element is not visually detectable from the outside when installed. The positive and / or non-positive locking of the positioning element in the groove of the support rail advantageously provides a reliable and stable connection. Because the positioning element can be inserted completely within the groove and is not visually detectable from the outside when installed, an aesthetically pleasing design and a particularly compact fastening solution are achieved. Only the retaining elements of the base body protrude from the surface of the support rail to accommodate, for example, a pipe.This also protects the positioning element from external influences such as dirt and damage, thus increasing the service life of the fastening element.

[0032] According to a further preferred embodiment, the holding means of the base body can include a clamping device for securing the fastening element, wherein the clamping device can mechanically connect the circumferential ends of the holding means to each other for clamping additional components such as pipes, cables, or polygon profiles. Equipping the holding means of the base body with a clamping device enables the secure clamping of additional components such as pipes, cables, or polygon profiles. The mechanical connection of the circumferential ends of the holding means (e.g., the clamp ends of a clamp band) achieves a stable and uniform distribution of the clamping force, which increases the stability and safety of the fastening element and ensures reliable fixation of the components.In a further preferred embodiment, the clamping device can be a quick-release fastener for a Quicklock clamp, wherein the clamping device has a locking tab for clamping and tightening the clamp. Instead of the worm gear on the clamping heads of the clamp, a clamping or tightening device can be provided on the clamping heads according to this embodiment, which can create a secure connection by simply flipping a clamping lever. The Quicklock clamp can preferably be fully opened to insert pipes or cables, and the clamp can then be quickly clamped or fastened using the clamping device. Overall, significantly faster assembly can be achieved by means of such a clamping device or quick-release clamp.

[0033] According to a further embodiment of the invention, the positioning element can be fixed in the groove of the mounting rail by clamping the fastening element. Fixing the positioning element in the groove of the mounting rail by clamping the fastening element enables simple and quick assembly. The positioning element is pressed and deformed into the groove by the radial clamping of the fastening element in such a way that a positive and / or non-positive locking connection is achieved in the desired position. This reduces assembly effort and allows for flexible adjustment of the fastening element's position along the groove, further increasing the versatility and user-friendliness of the fastening element.

[0034] According to a further preferred embodiment, the positioning element is designed such that it can be flexibly and freely positioned along the longitudinal extent of the groove by applying slight, predefined external pressure to the fastening element or the base body of the fastening element. By removing the external pressure and radially clamping the fastening element, the positioning element is pressed and deformed into the groove of the support rail in such a way that a positive-locking and / or force-fit secure fixation in the desired position can be achieved. Preferably, the spring mechanism or the lower, bulbous part of the positioning element engages firmly in the groove profile. Furthermore, the mechanical force distribution resulting from the slight external pressure is preferably designed to accommodate the aforementioned movement function.

[0035] Preferably, the neck section of the positioning element is compressed by external pressure, allowing the fastener to be easily positioned along the groove. This pressure is preferably applied vertically from above towards the mounting rail. This allows the fastener to be securely, firmly, and easily fixed in a desired position relative to the mounting rail. Overall, this significantly improves handling, especially during assembly.

[0036] According to a further preferred embodiment, the base body can include a locking structure for additional securing and locking of the fastener in the groove, wherein the positioning element can have a flat strip section and be formed by the locking structure. A locking structure on the base body of the fastener provides additional securing and locking of the fastener in the groove. This increases stability and prevents unintentional loosening of the fastener. The flat strip section as part of the locking structure enables a compact design and full-surface contact in the area of ​​the groove, which optimizes the distribution of forces and increases the load-bearing capacity.In a further preferred embodiment, it is alternatively or additionally conceivable that the locking structure and / or the positioning element itself is designed as a bracket for attachment to the base body of the fastening element, wherein the bracket is fixed to the base body of the fastening element by welding, clinching, riveting, or by mechanically folded tabs. More preferably, the bracket can be slotted, with tabs on the base body of the fastening element complementary to the slots of the bracket. These tabs project radially outwards and can be inserted into the slots, and the tabs can be bent over after insertion to fix both elements. This represents a particularly simple and cost-effective method of fixing the bracket to the base body of the fastening element.In this case, the positioning element is not directly bent or formed onto the base body of the fastener, but rather fixed to the fastener at the appropriate point as a separate element or structure. This further increases overall stability.

[0037] Preferably, the locking structure can be formed by support elements that can be arranged parallel to the flat belt section. Preferably, the support elements of the locking structure and the groove of the support rail can have complementary projections and recesses. Further preferably, the positioning element can have a rotatable connection for flexible alignment of the retaining means, wherein the complementary structure between the locking structure and the support rail can be engaged by rotating the support elements in the direction of rotation. In this embodiment, the positioning element can be fixed by means of a simple rotational movement of the locking structure, which is particularly effective. Support elements arranged parallel to the flat belt section provide additional stability and support.The complementary protrusions and recesses between the support elements and the groove ensure secure mechanical anchoring and prevent the fastener from slipping. These features are also simple and cost-effective to manufacture. Furthermore, the rotatable connection allows for flexible alignment of the fixing elements, enabling easy and precise adjustment of the component positions.

[0038] In a further preferred embodiment, the base body of the fastening element can be designed for mounting on flat sheets or DIN rails, and may include a flat strip section. A base body specifically designed for mounting on flat sheets or DIN rails offers a versatile and flexible fastening solution for various applications. The flat strip section advantageously ensures a large contact area and uniform distribution and transmission of forces, which can further increase the stability and safety of the fastening in specific applications.

[0039] It is further preferably conceivable that the retaining elements of the fastener are equipped with a quick-release mechanism that allows for tool-free and rapid attachment and removal of the additional components. A quick-release mechanism generally refers to a mechanism that enables quick and easy attachment and removal without the use of tools. A typical quick-release mechanism would, for example, be a clip or click mechanism that enables and further supports a tool-free and rapid connection. Equipping the retaining elements with a quick-release mechanism allows for tool-free and rapid attachment and removal of the additional components. This significantly increases the user-friendliness and efficiency of the fastener, as assembly and disassembly can be carried out quickly and easily.A quick-release device such as a clip or click mechanism offers a secure and stable connection without additional effort.

[0040] According to a further preferred embodiment, the fastening element can be an open clamp, preferably a spring steel clamp, wherein the base body can have radially projecting clamping heads at its circumferential ends for clamping and radially securing additional components such as pipes, cables, or polygonal profiles. An open clamp, preferably made of spring steel, offers a flexible and reliable fastening solution. The radially projecting clamping heads allow for easy clamping and securing of additional components, which simplifies assembly and ensures stable fixation. The properties of spring steel provide the desired elastic restoring force that securely holds the components.

[0041] According to another alternative embodiment, the fastening element can be a closed clamping clamp, preferably a worm gear clamp, wherein the worm gear clamp can be radially clamped via a clamping device to fix additional components such as pipes, cables, or polygon profiles. Preferably, the fastening element can be designed as a worm gear clamp, which, when the clamp is tightened, is fixed in the groove by its positioning element. According to a further preferred alternative embodiment, the closed clamping clamp can be a so-called quick-lock clamp instead of a worm gear clamp.

[0042] It can be a quick-release clamp. Instead of a worm gear on the clamping heads, a clamping or locking device can be provided on the clamping heads, which creates a secure connection by simply flipping a clamping lever. The Quicklock clamp can preferably be fully opened to insert pipes or cables and quickly clamp or fasten the clamp. Overall, significantly faster installation can be achieved with the quick-release clamp because no fixing elements such as screws need to be tightened.

[0043] According to a further preferred alternative embodiment of the invention, the base body and / or the positioning element and / or the holding means of the fastening element can be formed in multiple parts.

[0044] The multi-part design of the base body, positioning element, and / or holding elements allows for particularly flexible adaptation of the fastener to different assembly requirements and applications. This modularity advantageously enables individual components to be selectively replaced or optimized for specific tasks without having to redesign the entire fastener. This results in cost-effective production and also facilitates repair or retrofitting in the field.

[0045] According to a further preferred embodiment, the spring mechanism of the positioning element can be formed by bent spring tabs, wherein the bent spring tabs are formed directly on the holding means, preferably on the clamp band.

[0046] The design of the spring mechanism using bent spring tabs formed directly on the retaining element, particularly the clamp band, offers the advantage of a particularly compact and integrated construction. This eliminates the need for separate spring components, reducing the number of parts, simplifying assembly, and lowering manufacturing costs. At the same time, the spring tabs, positioned or formed directly on the retaining element, ensure a high restoring force combined with flexibility, thus enabling reliable fixation in the groove.Preferably, two bent spring tabs can be formed on a circumferential side of the positioning element and / or the spring mechanism, wherein a single bent spring tab can be formed on the opposite side of the positioning element and / or the spring mechanism, which is formed in a centrally arranged position between the two opposite bent spring tabs.

[0047] The arrangement of two bent spring tabs on one circumferential side and a centrally positioned spring tab on the opposite side creates an asymmetrical yet stable spring behavior. This results in improved self-centering of the positioning element in the groove and a more even distribution of clamping forces. This geometry achieves optimized seating of the spring mechanism in the groove, contributing to increased operational reliability, particularly in dynamically stressed applications.

[0048] Furthermore, preferably, a circumferential slot can be formed in the clamp band by shaping or bending the centrally arranged single spring tab.

[0049] The creation of a circumferential slot in the clamp band by bending over the centrally located spring tab further improves the elastic mobility of the retaining element in the radial direction. This allows the clamp to yield gently without the fastener unintentionally loosening. This is particularly advantageous when the held component (e.g., pipes) undergoes thermally induced expansion.

[0050] According to a further preferred alternative embodiment of the invention, a fastening clip can be placed on the fastening element, wherein the fastening element is preferably an open clamping clamp with clamping heads.

[0051] Attaching a separate fastening clip, particularly a plastic clip, to an open clamping clamp with clamping heads provides additional radial securing of the clamping clamp. The clip acts as a redundant retaining element and prevents the clamping heads from spreading open under high mechanical loads. Simultaneously, the plastic clip serves as an electrical insulator and corrosion protection for the underlying metal parts, which can extend the service life of the fastening element.

[0052] Preferably, the clamping heads can be provided with lateral projections for fixing the fastening clip during placement, the projections being designed to be complementary to corresponding recesses on the fastening clip, such that both elements interlock positively and / or forcefully by means of a clip or locking mechanism.

[0053] The design of the clamping heads with lateral projections, which are complementary to recesses on the mounting clip, creates a positive-locking and / or frictional clip or locking mechanism. This enables quick and tool-free installation of the clip, which also ensures high holding force. The system remains detachable and reusable, which simplifies maintenance.

[0054] Preferably, the fastening clip can be a plastic clip.

[0055] According to a further preferred alternative embodiment of the invention, a separate positioning element can be connected to the holding means of the fastening element, wherein the fastening element can preferably be a worm gear clamp with a clamping device. Preferably, the separate positioning element can be formed in one piece and have bent spring tabs that form the spring mechanism, wherein the separate positioning element can include a through-opening for the circumferential passage of the fastening element or the clamp band during connection.

[0056] The separate, one-piece positioning element with bent spring tabs offers the possibility of converting standard fastening devices such as worm gear clamps into tool-free mounting solutions at low cost. The clamp band can be inserted circumferentially through the through-hole in the positioning element and easily connected to it. This enables particularly easy retrofitting and allows for a free choice of commercially available clamping and holding devices. According to a further preferred alternative embodiment of the invention, a separate positioning element can be connected to the holding device of the fastening element, wherein the fastening element can preferably be a worm gear clamp with a clamping device.Preferably, the separate positioning element can be designed in multiple parts, in particular in two parts, wherein the multi-part separate positioning element can have at least one part with snap-in arms and one part with complementary snap-in areas for inserting the snap-in arms.

[0057] The multi-part, and in particular two-part, design of the separate positioning element, with locking arms on one part and complementary locking areas on the other, enables a particularly stable and positive connection with the holding element by forming an effective locking mechanism. The locking arms ensure reliable fixation of the holding element in the through-hole and prevent unintentional displacement. At the same time, this modular design allows for easy pre-assembly and a high degree of variability with regard to the holding elements that can be used.

[0058] Preferably, the locking arms of the multi-part separate positioning element can be designed and arranged in such a way that they can include a through-opening for the circumferential passage of the fastening element or the clamp band during connection, wherein the clamp band can be passed through the through-opening between at least two parts of the multi-part positioning element.

[0059] The arrangement of the through-hole between at least two parts of the positioning element allows for easy threading of the clamp strap and secure encirclement of it. This contributes to a high axial holding force and improves the long-term stability of the connection, especially in applications subject to vibration.

[0060] Preferably, the multi-part, particularly two-part, separate positioning element can include a spring mechanism on its underside, formed by a plurality of bent spring tabs. The application of a plurality of bent spring tabs to the underside of the multi-part positioning element advantageously increases the elastic restoring force of the spring mechanism. This ensures that the positioning element is reliably pressed against the groove wall, guaranteeing a backlash-free and permanent fixation. The multiple spring tabs also provide redundancy, ensuring that the function is maintained even if individual spring tabs are partially damaged.

[0061] In summary, the described features and design variants of the invention offer a versatile and efficient solution for the tool-free and screwless assembly of fasteners.

[0062] Further features, details and advantages of the invention will become apparent from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. The drawings show:

[0063] Fig. 1a shows a schematic front view of a fastening element according to the invention (closed worm gear clamp) which is positioned in a groove of a standard rail;

[0064] Fig. 1b shows a schematic detail view of the fixing between the fastening element and the groove of the standard rail shown in Fig. 1a;

[0065] Fig. 1c is a schematic single view of the fastening element from Fig. 1a without standard rail (two fastening elements connected via worm gears and one unfolded or opened fastening element);

[0066] Fig. 1d shows a schematic side view of two fastening elements from Fig. 1a, each fixed to the standard rail and holding a pipe;

[0067] Fig. 2a shows a schematic front view of another embodiment of a fastening element according to the invention (open clamp) which is positioned in a groove of a standard rail;

[0068] Fig. 2b is a schematic detail view of the fastening element from Fig. 2a without the standard rail (one clamped and one unwound or open fastening element); Fig. 2c is a schematic side view of two spaced-apart fastening elements from Fig. 2a, each fixed to the standard rail and holding a pipe;

[0069] Fig. 3a shows a schematic representation of a further embodiment of a fastening element according to the invention (open clamp with locking structure) and a top-hat profile rail;

[0070] Fig. 3b shows a schematic underside view of the top-hat profile rail shown in Fig. 3a with the fastening element inserted (left illustration) and the locking structure locked in the top-hat rail (right illustration);

[0071] Fig. 4a shows a schematic perspective view of a further embodiment of a fastening element according to the invention (clamp with open clamping heads) with bent spring tabs as a positioning element;

[0072] Fig. 4b is a schematic side view of the fastening element of Fig. 4a;

[0073] Fig. 5 shows a schematic perspective view of a further embodiment of a fastening element according to the invention (clamp without open clamping heads) with bent and overlapping or intersecting spring tabs as a positioning element;

[0074] Fig. 6 shows a schematic perspective view of a further embodiment of a fastening element according to the invention (clamp with open clamping heads) with an additional fastening clip attached;

[0075] Fig. 7a shows a schematic side view of another embodiment of a fastening element according to the invention (closed worm gear clamp with separate positioning element);

[0076] Fig. 7b shows a schematic detail view of the separate positioning element with bent spring tabs from Fig. 7a;

[0077] Fig. 8a shows a schematic perspective view of another embodiment of a fastening element according to the invention (closed worm gear clamp with separate, multi-part positioning element and separate spring mechanism);

[0078] Fig. 8b is a schematic side view of the fastening element of Fig. 8a;

[0079] Fig. 8c shows another schematic perspective view of the fastening element of Fig. 8a with the positioning element disassembled.

[0080] The fastening element, generally designated as 50 in its entirety in Fig. 1a, Fig. 1c, Fig. 1d, Fig. 2a to Fig. 2c and Fig. 3a, which can be mounted without tools or screws, has an elastic base body 10 which is designed and configured to snap into a corresponding groove 32, 32' of a support rail 30, 30'.

[0081] The elastic base body 10 of the fastening elements 50 shown in the figures includes a positioning element 40 for insertion into the groove 32, 32'. The elastic base body 10 also includes retaining means 52 for holding additional components such as tubes 1, cables, or polygon profiles, wherein the positioning element 40 has specific geometric features that enable tool-free and screwless assembly of the fastening element 50 in the groove 32, 32' of the support rail 30, 30'.

[0082] The positioning element 40 can be flexibly positioned slidingly along a longitudinal extension of the groove 32 of the support rail 30, the positioning element 40 having a spring mechanism 90 for stabilizing the connection in a desired position. The spring mechanism 90 generates elastic restoring forces to fix the fastening element 50, 60 in the groove 32 of the support rail 30.

[0083] The positioning element 40 of the base body 10 can be fixed in the groove 32 of the support rail 30 by means of a positive and / or force-fit connection, wherein the positioning element 40 can be inserted completely within the groove 32, such that the positioning element 40 is not visually detectable from the outside when installed. The positioning element 40 of the fastening element 50 can be an integral part of a one-piece molded part, wherein the one-piece molded part can be in the form of a strip, in particular a spring steel strip, and wherein the positioning element 40 can be produced by bending the base body 10. As can be seen in particular from Fig. 1a to Fig. 1d, the fastening element 50 can be a clamping clamp, in particular a worm gear clamp 60, wherein the worm gear clamp 60 can be clamped radially via a clamping device 20 (see Fig. 1a) to fix additional components such as pipes 1, cables or polygon profiles.The circumferential ends of the retaining means 52 or the clamp band halves can be mechanically connected to each other via the clamping device 20, as shown by way of example in Figure Series 1. The fastening element 50 can be designed as a worm-drive clamp 60, which is fixed in the groove 32 by its positioning element 40 when tightened.

[0084] Fig. 1c illustrates two worm gear clamps or fastening elements 50, 60, where the circumferential ends are connected via the clamping devices 20. Below is a "unwound" or detached worm gear clamp 60.

[0085] Fig. 1b illustrates details of possible specific geometric features of the positioning element 40 or the spring mechanism 90. The specific geometric features of the positioning element 40 can comprise at least a neck section 12 and an adjoining bulbous section 14, wherein the neck section 12 can be formed by a taper at the level of an upper opening of the groove 32 and the bulbous section 14 can be formed by an expansion in the area of ​​a base of the support rail 30 (see in particular Fig. 1b and Fig. 2a).

[0086] The positioning element 40 can rest with its bulbous section 14 on a bottom of the groove 32 at least partially or over a surface, whereby the bulbous section 14 can project towards lateral recesses of the groove 32.

[0087] The specific geometric features of the basic body 10 can be further designed in such a way that they allow multiple use in different slot sizes of support rails 30, 30'.

[0088] Fig. 1d shows by way of example two fastening elements 50, designed as worm gear clamps 60, positioned in a groove 32 of a standard rail 30, which receive and fasten or hold a pipe 1.

[0089] As can be seen in particular from Figs. 2a to 2c, the fastening element 50 can be an open clamp, preferably an open spring steel clamp 70, wherein the base body 10 can have radially projecting clamping heads 54 at its circumferential ends for clamping and radially clamping additional components such as pipes 1, cables or polygon profiles.

[0090] Fig. 2b illustrates an open spring steel clamp or fastening element 50, 70 with two clamping heads 54 in a "tightened" position (shown above). Below is a "unwound" or released spring steel clamp 70.

[0091] Fig. 1d shows by way of example two fastening elements 50 positioned on a standard rail 30, designed as worm gear clamps 60, which receive and fasten or hold a pipe 1.

[0092] Fig. 2c shows by way of example two fastening elements 50 positioned in a groove 32 of a standard rail 30, designed as open spring steel clamps 70, which receive and fasten or hold a tube 1.

[0093] The positioning element 40 of the fastening element 50, 60, 70 in Figures 1 and 2 can additionally include laterally projecting support elements (not shown) for support in the groove 32 and for reinforcing the spring mechanism 90. These support elements (not shown) can be arranged circumferentially on the positioning element 40 of the holding means 52. The positioning element 40 can also include a spring (not shown) for automatic adjustment along the groove 32.

[0094] As can be seen in particular from Fig. 3a and Fig. 3b, the fastening element 50 can be an open clamp, preferably an open spring steel clamp 70, wherein the base body 10 can have radially projecting clamping heads 54 at its circumferential ends for clamping and radially clamping additional components such as pipes 1, cables or polygon profiles.

[0095] The illustrated fastening element 50, 70 can be configured to be fixed in a groove 32' of a top-hat profile rail 30'. Furthermore, according to this embodiment, the base body 10 can include a locking structure 80 for additional securing and locking of the fastening element 50 in the groove 32', wherein the positioning element 40 can have a flat strip section 55. The positioning element 40 is formed directly by the flat strip section 55 and by the locking structure 80.

[0096] The locking structure 80 can have and be formed by two support elements 81, the support elements 81 being able to extend parallel to the flat belt section 55.

[0097] The support elements 81 of the locking structure 80 and the groove 32' of the top-hat rail 30' can have complementary projections 82 and recesses 84 in the form of knobs and corresponding knob receptacles (see in particular Fig. 3b).

[0098] As can be seen particularly from Fig. 3b, the positioning element 40, which can be formed by the flat band section 55 and the locking structure 80, can have a rotatable connection for the flexible alignment of the holding means 52 and for fixing the fastening element 50, wherein the complementary structure between the locking structure and the support rail can be brought into engagement with each other by a rotation of the support elements in the direction of rotation D. The left-hand illustration of Fig. 3b shows an unlocked position of the support elements 81 of the locking structure 80 by way of example, whereas the right-hand illustration of Fig. 3b shows a locked position, wherein the support elements 81 of the locking structure 80 are rotated by approximately 90° in the direction of rotation D, such that the complementary fastening structure orthe projections 82 and the recesses 84 engage with each other and the fastening element 50 is fixed in the groove 32' of the top-hat rail 30'.

[0099] The base body 10 of the fastening element 50 can therefore be designed for fastening to flat sheets or DIN rails 30', wherein the base body 10 can have a corresponding flat strip section 55.

[0100] Furthermore, the retaining means 52 of all the illustrated fastening elements 50 (Fig. 1 to Fig. 3) can be equipped with a quick-release device (not shown) which allows for tool-free and quick fastening and release of the additional components 1.

[0101] The support rail can in principle be a standard rail 30 or a top-hat profile rail or top-hat rail 30', wherein the top-hat profile rail 30' can have at least one recess 34 for receiving and interacting with the locking structure 80 of the fastening element 50, 70 (see in particular Fig. 3b).

[0102] The retaining means 52 of the fastening element 50 can have an elastic structure, wherein the retaining means 52 can be formed by a clamp band made of spring steel or plastic or a combination of both materials, as shown in all figures.

[0103] The base body 10 of the fastening element 50, 60, 70 can be made of a metallic material and / or a plastic. The retaining elements 52 can be provided with an additional reinforcing structure (not shown).

[0104] The positioning element 40 can further include a guide 51 to improve the sliding properties of the fastening element. Alternatively or additionally, the base body 10 can be provided with a surface coating that reduces friction during guidance between the fastening element 50 and the support rail 30, 30'. The guide 51 can, for example, be formed by reduced contact surfaces between the positioning element 40 and the support rail 30, 30' (see in particular Fig. 1b and Fig. 2a).

[0105] Figures 4a and 4b illustrate a fastening element 50, which is designed as an open clamping clamp 70 with clamping heads 54. The fastening element 50 can be provided with a positioning element 40, which includes a spring mechanism 90.

[0106] The spring mechanism 90 can be formed by bent spring tabs 94. Two bent spring tabs 94 can be formed on one circumferential side of the positioning element 40. A single bent spring tab 94 can be arranged on the opposite circumferential side of the positioning element 40, centrally located between the two opposing bent spring tabs 94. By bending the centrally arranged spring tab 94, a circumferential slot 93 can be formed in the clamp band 52 (see in particular Fig. 4a).

[0107] Fig. 5 illustrates a slightly modified embodiment in which a clamping clamp 71 is used without open clamping heads 54. The spring mechanism 90 can also be formed by bent spring tabs 94, with the spring tabs 94 overlapping or crossing each other. One spring tab 94 can, as shown, engage centrally between two other spring tabs 94 on the opposite side. Fig. 6 illustrates another embodiment. As can be seen, a fastening clip 91 can be placed on top of the fastening element 50. The fastening element 50 can be an open clamping clamp 70 with clamping heads 54. The clamping heads 54 can be provided with lateral projections 92 for securing the fastening clip 91 when it is placed on the clamp.The projections 92, in particular lateral fastening lugs, can be designed to complement corresponding recesses on the fastening clip 91, such that both elements can engage one another in a form-fit and / or force-fit manner by means of a clip or locking mechanism. The fastening clip 91 can be designed as a plastic clip.

[0108] As can be seen from Figures 7 and 8, the positioning element 40 can be designed as a separate, multi-part, or one-piece element. A separate positioning element 40 can be connected to the retaining element 52 of the fastening element 50. The fastening element 50 can be a worm gear clamp 60 with a clamping device 20. The separate positioning element 40 can be formed in one piece, as shown in Figures 7a and 7b, and have bent spring tabs 94 that can form the spring mechanism 90. The separate positioning element 40 can include a through-hole 97 for the circumferential passage of the clamp band 52 during connection.

[0109] As shown particularly in Fig. 8c, the separate positioning element 40 can be designed in multiple parts, in particular in two parts. The multi-part positioning element 40 can have at least one part with snap-in arms 96 and another part with complementary snap-in areas 95 for inserting the snap-in arms 96. The snap-in arms 96 can be designed and arranged such that they include a through-opening 97 for the circumferential passage of the clamp band 52 during connection. The clamp band 52 can be passed through the through-opening 97 between at least two parts of the multi-part positioning element 40.

[0110] The multi-part, in particular two-part, separate positioning element 40 can include a spring mechanism 90 on one underside, which is formed by a plurality of bent spring tabs 94.

[0111] The invention is not limited to the embodiments described above, but can be modified in a variety of ways. In particular, the precise coordination of the number of fastening elements used, as well as the materials and clamp types used, can vary depending on the desired stability and application.

[0112] The fastening element according to the invention can be used in various applications such as in water management (e.g. swimming pools, irrigation and drainage, vertical gardens, etc.), in construction (e.g. drywall, ventilation, heating and plumbing, smoke extraction, chimneys, fire protection), in the field of renewable energies (e.g. PV systems), in the agricultural industry (e.g. irrigation systems, drainage) or in dosing technology (e.g. pharmaceutical, food, packaging industries) and ensures simple, safe and flexible installation without additional tools.

[0113] All features and advantages arising from the claims, the description and the drawing, including design details, spatial arrangements and process steps, can be essential to the invention both individually and in various combinations.

[0114] Reference numeral list

[0115] Direction of rotation (assembly locking structure)

[0116] R Radial direction (fastening element)

[0117] 1 additional component (pipe)

[0118] 10 basic shapes

[0119] 12 Neck section (tapering)

[0120] 14 Abdominal section

[0121] 20 clamping device

[0122] 30 Mounting rail (standard rail)

[0123] 30' mounting rail (hat profile rail)

[0124] 32 Nut

[0125] 32' Nut

[0126] 34 Recess (longitudinal slot)

[0127] 40 positioning elements

[0128] 50 fastening elements

[0129] 51 Leadership

[0130] 52 Holding devices (clamp strap)

[0131] 54 clamping heads

[0132] 55 flat strip section

[0133] 60 clamping bracket (worm gear clamp, fastening element)

[0134] 70 Open clamp design (spring steel clamp, fastening element)

[0135] 71 Clamping clamp (without open clamping heads, spring steel clamp, fastening element)

[0136] 80 locking structure

[0137] 81 Support element

[0138] 82 lead (buttons)

[0139] 84 Recesses (button mounts)

[0140] 90 spring mechanism

[0141] 91 Mounting clip (plastic clip)

[0142] 92 protrusions (lateral mounting pegs in the area of ​​the clamping heads)

[0143] 93 slots (circumferential side)

[0144] 94 bent spring tabs

[0145] 95 Locking mechanism (connection of multi-part positioning element)

[0146] 96 Snap-in arms 97 Feed-through opening (positioning element, for holding devices, especially clamp bands)

Claims

Patent claims 1. A tool- and screwless mounting fastener (50) comprising an elastic base body (10) designed and configured to snap into a groove (32) of a support rail (30, 30'), wherein the elastic base body (10) has a positioning element (40) for insertion into the groove (32) and retaining means (52) for holding additional components such as tubes (1), cables, or polygon profiles, wherein the positioning element (40) has specific geometric features that enable tool- and screwless mounting of the fastener (50) in the groove (32) of the support rail (30, 30'), characterized in that the positioning element (40) is flexibly slidable along a longitudinal extension of the groove (32), wherein the positioning element (40) has a spring mechanism (90) for stabilizing the connection in a desired position, wherein the spring mechanism (90) generates elastic restoring forces.to fix the fastening element (50) in the groove (32) of the support rail (30, 30').

2. Fastening element according to claim 1, characterized in that the base body (10) comprises a metallic material and / or a plastic.

3. Fastening element according to claim 1 or 2, characterized in that the positioning element (40) has a guide (51) for improved sliding capability of the fastening element (50).

4. Fastening element according to one of the preceding claims, characterized in that the base body (10) and the positioning element (40) of the fastening element (50) are integral parts of a one-piece molded part, wherein the one-piece molded part is designed in a band shape, in particular as a spring steel band, and wherein the positioning element (40) is produced by bending the base body (10).

5. Fastening element according to one of the preceding claims, characterized in that the positioning element (40) of the fastening element (50) additionally comprises laterally projecting support elements for support in the groove (32) and for reinforcing the spring mechanism (90).

6. Fastening element according to one of the preceding claims, characterized in that the positioning element (40) comprises a spring for automatic adjustment along the groove (32).

7. Fastening element according to one of the preceding claims, characterized in that the support rail (30, 30') is a standard rail (30) or a top-hat profile rail (30'), wherein the top-hat profile rail (30') has at least one recess (34) for receiving and interacting with a locking structure (80) of a fastening element.

8. Fastening element according to one of the preceding claims, characterized in that the positioning element (40) of the base body (10) can be fixed in the groove (32) of the support rail (30, 30') in a form-fit and / or force-fit manner, wherein the positioning element (40) can be inserted completely within the groove (32) in such a way that the positioning element (40) is not visually recognizable from the outside when inserted.

9. Fastening element according to one of the preceding claims, characterized in that the retaining means (52) of the base body (10) have a clamping device (20) for clamping the fastening element (50), wherein the clamping device (20) for clamping additional components such as tubes (1), cables or polygon profiles mechanically connects circumferential ends of the retaining means (52) to each other.

10. Fastening element according to one of the preceding claims, characterized in that the positioning element (40) is fixed by clamping the fastening element (50) in the groove (32) of the support rail (30, 30').

11. Fastening element according to one of the preceding claims, characterized in that the base body (10) comprises a locking structure (80) for additional securing and locking of the fastening element (50) in the groove (32), wherein the positioning element (40) is formed by the locking structure (80).

12. Fastening element according to one of the preceding claims, characterized in that the base body (10) of the fastening element (50) is designed for the The attachment is designed to be mounted on flat sheets or top-hat rails, wherein the base body (10) has a flat strip section (55).

13. Fastening element according to one of the preceding claims, characterized in that the retaining means (52) of the fastening element (50) are equipped with a quick-release device which enables tool-free and quick fastening and release of the additional components.

14. Fastening element according to one of claims 1 to 13, characterized in that the fastening element (50) is an open clamping clamp, preferably a spring steel clamp (70), wherein the base body (10) has radially projecting clamping heads (54) at its circumferential ends for clamping and radially clamping additional components such as pipes (1), cables or polygon profiles.

15. Fastening element according to one of claims 1 to 13, characterized in that the fastening element (50) is a closed clamping clamp, preferably a worm gear clamp (60), wherein the worm gear clamp (60) can be clamped radially via a clamping device (20) to fix additional components such as pipes (1), cables or polygon profiles.

16. Fastening element according to one of claims 1 to 3 and 5 to 15, characterized in that the base body (10) and / or the positioning element (40) and / or the retaining means (52) of the fastening element (50) are formed in multiple parts.

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