Guide system having a guide rail and a movement rail

Abstract

The invention relates to a guide system (1) having a guide rail (2) and a movement rail for linearly movably arranging a drawer element on a carcass, wherein: a carriage (4), having a plurality of rolling bodies (5-9), of the guide system (1) is arranged between the guide rail (2) and the movement rail (3) so that the movement rail (3) can be moved relative to the guide rail (2) when the guide system (1) is assembled; the guide rail (2) has a bearing surface (10) and the movement rail (3) has a bearing surface (11); these bearing surfaces (10, 11) are opposite one another and, when the guide system (1) is assembled, the rolling bodies (5-9) of the carriage (4) are guided so as to be rollable on the bearing surfaces; a clear distance between the bearing surfaces (10, 11) defines at this point a tunnel dimension in which the rolling bodies (5-9) move. According to the invention, at least one of the bearing surfaces (10, 11) has a recess (12, 12a-12c) so that, when a contact point of at least one rolling body (5) is positioned in the recess (12), this rolling body (5) still makes contact with the bearing surfaces (10, 11) which are recessed at this point, but a partial load reduction of this rolling body (5) takes place in a targeted manner by the tunnel dimension in the recess (12) being increased in comparison with portions which are not recessed or are recessed to a lesser extent.

Description

[0001] "Guide system with a guide rail and a motion rail"

[0002] State of the art

[0003] Guide systems are known for furniture components such as drawer elements, which are mounted on the body of a piece of furniture by means of a guide system. The guide system includes, for example, a linear guide. The guide system may also include, for example, two rails that are relatively movable relative to each other. The guide system can be designed, for example, as a full extension with three rails or as a partial extension with exactly two rails.

[0004] For high user comfort and the desired longevity of the guide system, rolling elements are provided between two adjacent rails for their sliding movement and supporting bearings. For example, several rolling elements grouped in a carriage enable smooth and consistent movement of the rails relative to each other, both under light loads from the drawer element and its contents, and under comparatively high mechanical loads. The guide system for furniture components must be designed for a long service life, both statically and dynamically, taking into account the drawer element's own weight as well as any additional weight component from its contents. The drawer element is, for example, a drawer in a living room or kitchen cabinet. For heavy-duty drawer elements, total masses of up to 70 kg must be considered.The aforementioned stresses also affect the rolling elements in the movement system, which poses a significant challenge.

[0005] The rolling elements are subjected to both dynamic and static loads and must withstand them equally. The mounting of the rails with rolling elements in carriages is crucial for smooth running and consistent movement of the thrust element. Object and advantages of the invention

[0006] The object of the present invention is to provide a guide system for a furniture component, such as a drawer element, that is advantageously suited to a wide range of applications, particularly with regard to long-term loads and high user comfort. In particular, both dynamic and static load conditions of the assembled guide system should be advantageously managed in order to enable a long service life of the guide system with optimized functionality.

[0007] This problem is solved by the independent claim. The dependent claims describe advantageous and expedient further developments of the invention.

[0008] The invention relates to a guide system comprising a guide rail and a motion rail, wherein the guide system is configured to arrange a push element linearly movable on a body, wherein a carriage of the guide system with several rolling elements is arranged between the guide rail and the motion rail, such that the motion rail is movable relative to the guide rail in the assembled state of the guide system, wherein the guide rail has a running surface, wherein the motion rail has a running surface, wherein these running surfaces are opposite each other, wherein the rolling elements of the carriage are guided to roll on the running surfaces in the assembled state of the guide system, wherein a clear distance between the running surfaces defines a tunnel dimension at this point within which the rolling elements move.

[0009] For example, the running surface of the guide rail is opposite the running surface of the motion rail. For example, the running surface of the guide rail is vertically spaced below the running surface of the motion rail. The location is, for example, a longitudinal point of the guide system along its length. For example, the location comprises two opposing running surface locations: one running surface of the motion rail and one running surface of the guide rail. For example, the running surface of the guide rail is aligned parallel or nearly parallel to the running surface of the motion rail.

[0010] The core of the invention lies in the fact that at least one of the running surfaces has a recess which is dimensioned in such a way that when a contact point of at least one rolling element is positioned in the recess, there is still contact of this rolling element with the running surface which is recessed at this point, but a targeted partial relief of this rolling element takes place in which the tunnel dimension in the recess is increased compared to sections that are not or less recessed.

[0011] As a result, increased running comfort of the sliding element is achieved, which is slidably mounted on a body using the guide system.

[0012] For example, other rolling elements of the carriage, such as rollers, which are not partially unloaded, are damaged more severely, for example in the manner of a sacrificial rolling element, which is why the guidance system is also referred to as a sacrificial guidance system.

[0013] For example, rolling elements that are not partially relieved of stress and are not or only marginally relevant to running comfort are sacrificed with regard to deformation such as flattening. The geometry of the recess or partial relief can be, for example, wedge-shaped, asymmetrical, or symmetrical with a slight lead-in chamfer.

[0014] For example, the recess is located in a front area of ​​the guide system, relative to the opening direction of the relevant thrust element on the body, because maximum rolling element load occurs at the front. A recess can also be provided on other components of the guide system that lie along the path of movement of at least one rolling element. These recess locations are, for example, where further load scenarios occur within the guide system.

[0015] The tunnel dimension in the recess is larger compared to the unrecessed or less recessed sections of the remaining running surface or the remaining one or both running surfaces. For example, when the guide system is collapsed, the rolling element contacts a section of the running surface without a recess at the point or in the cross-section where the recess is present on the opposite running surface, and the rolling element is therefore not in contact with this recessed running surface section. For example, the rolling element, which is partially unloaded in the closed state, is supported at the bottom on the running surface of the guide rail, and at the top, the rolling element is not in contact with the running surface of the motion rail due to the recess. The other rolling elements are fully supported or under load at the top and bottom. This allows, for example, undesirable effects to be avoided.Plastic deformations of the rolling element(s), which are particularly relevant to the running behavior of the guide system, are avoided or minimized. The advantageous effect of the raceway design is particularly relevant in the guide system's closed state, for example, when these components are subjected to high weight loads or have a heavy load. For instance, flattening or indentations of the relevant rolling elements' outer shape, which would otherwise occur, are avoided or minimized. Closed states are those in which the guide system typically remains for significantly longer or predominant periods compared to its moving state. The load on these relevant rolling elements is reduced. This allows them to retain their original, e.g., cylindrical or spherical, outer shape ideally or almost ideally. Long deformation periods, which were previously...Without partial relief, they can have an effect, thus remaining ineffective due to the partial release of at least one relevant rolling element.

[0016] The guide system is designed, for example, as a partial or full extension.

[0017] Preferably, the guide rail is a cabinet rail, such as a fixed rail, and the movement rail is, for example, a drawer slide. The movement rail can also be a center rail in a full-extension slide. It is conceivable that a recess is provided on one movement rail, or on both movement rails in a full-extension slide. It is also conceivable that a recess is provided solely on the guide rail, or additionally on at least one movement rail and on the guide rail.

[0018] In one embodiment, it is also possible for both the guide rail and the motion rail to have a recess. In this case, it is particularly preferred that, in a predefined position of the motion rail and guide rails, the respective recesses in the rails are arranged opposite each other in such a way that when a contact point of at least one rolling element is positioned in a recess of one rail, this rolling element also has a contact point in the other recess. This allows the respective recessed running surface of the opposing recesses to act for this rolling element. With such an arrangement, a smaller depth of the respective recess is preferably required to achieve the desired reduction of the tunnel dimension, such that the intended relief of the at least one rolling element is achieved while maintaining contact with the respective running surface.

[0019] By relieving the load on at least one rolling element, it is protected from the resulting load forces and, in particular, the associated wear and / or plastic deformation, such as deformation. This ensures that the desired uniform rolling of the rolling element on the running surfaces is consistently maintained during movement of the guide system. If the at least one rolling element leaves the recess for a rolling motion on the running surfaces, this rolling element will regularly dominate the rolling motion. In contrast, the at least one other or the several other rolling elements in the carriage, which were subject to greater wear and possibly also flattening, or which were in the closed state, have less of an impact and thus do not adversely affect the running behavior of the carriage. Preferably, however, all rolling elements of a carriage are always loaded.

[0020] The tunnel dimension, which is established when the carriage is mounted, is advantageously determined by the rolling elements, or rather by their diameter. This can, for example, lie between 3.92 and 4.99 mm. For instance, the diameter of a rolling element, and thus the tunnel dimension, is between 3.92 and 4.0 mm, or between 3.92 and 4.10 mm, or between 3.92 and 4.20 mm, or between 3.92 and 4.30 mm, or between 3.92 and 4.40 mm, or between 3.92 and 4.50 mm, or between 3.92 and 4.60 mm, or between 3.92 and 4.70 mm, or between 3.92 and 4.80 mm. The lower value can also be 4.0 mm, 4.1 mm, 4.2 mm, 4.3 mm, or higher, in tenths of a millimeter increments.

[0021] If the rolling elements are rollers, such as cylindrical rollers, they have a width or lateral length of, for example, 6-10 mm, 6-8 mm, or 8-10 mm. The recess should be dimensioned accordingly to ensure secure positioning with the necessary clearance for the rolling element. For example, the recess is dimensioned 0.5, 1.0, or 1.5 mm larger than the corresponding length of the rolling element. It is also possible that the rolling elements are not rollers but balls. In this case, the recess is significantly smaller, as ideally there is a point contact on the running surfaces. For example, all rolling elements in a common carriage may be identical. For example, there may be several carriages on the guide system.

[0022] Alternatively, the rolling elements in a common carriage may not be identical. For example, 2 to 8 rolling elements may be mounted on a common carriage, e.g., 3 to 6 rolling elements. Alternatively, exactly 3, exactly 4, exactly 5, exactly 6, or exactly 7 rolling elements may be mounted in a carriage, positioned in a mutually defined manner.

[0023] For example, the recess has a chamfer for the at least one rolling element. This prevents a sudden or abrupt transition of the rolling element from a non-recessed or unrecessed area of ​​the usually flat running surface into the recess of the running surface. This avoids a sudden or short-term peak load on the rolling element and thus prevents its original outer shape from being affected or the rolling element from being damaged.

[0024] The depression has, for example, a wedge shape. For example, a flat surface of the depression, e.g., over a predominant length of the depression, is inclined at a slight angle, e.g., between 3 and 12 degrees, to the plane of the running surface.

[0025] The running surface is, for example, horizontally or almost horizontally oriented when the guide system is mounted. For instance, the recess has exactly two straight wall sections that are aligned at angles to each other and connected. The wedge shape begins at the running surface and then gradually deepens. This allows, for example, a rolling element to roll smoothly and / or evenly and / or without jerking into and out of the recess.

[0026] For example, when the rolling element dips and re-emerges relative to the recess, the corresponding carriage also changes its alignment slightly between the two rails. This is advantageous, for example.

[0027] A recess with a leading-edge chamfer on both sides is conceivable, depending on the relative position of the running surfaces in which the relief of pressure on a rolling element is to occur. For example, the recess is V-shaped or approximately V-shaped. In one embodiment, for example, the recess has two leading-edge chamfers that are opposite each other and extend longitudinally along the running surface. For example, in a recess, a section of the recess is implemented in a central area that runs parallel to the running surface. For example, the central area of ​​the recess is formed between two leading-edge chamfers. For example, the two leading-edge chamfers have an identical angle of inclination, for example, identically inclined to the running surface and in opposite directions. Alternatively, for example, the two leading-edge chamfers have different angles of inclination.

[0028] Similarly, in the case of a wedge-shaped depression, a section with an inlet slope can also be followed by a depression section that has a parallel orientation to the running surface.

[0029] It is also conceivable that the wedge shape has different slopes, which, for example, are constant in certain sections. In one embodiment, however, a continuous transition from a shallower to a steeper wedge shape is also possible. Similarly, in another embodiment, a continuous transition from a steeper section of the wedge shape or the lead-in chamfer to a shallower section of the wedge shape or the lead-in chamfer is possible. With varying lead-in chamfer slopes, such as varying ramp slopes, a very smooth entry of the rolling element can be achieved, which then leads more quickly—for example, with a slightly steeper lead-in chamfer slope or ramp slope—to a desired depression or to a desired recessed position of the rolling element, i.e., a shorter distance traveled by the rolling element compared to a previous travel distance.

[0030] For example, the recess between the running surfaces is positioned such that, in a closed position of the push element, a contact point of at least one rolling element of the carriage lies in the recessed running surface of the recess. A closed position of the push element corresponds to a collapsed position of the guide system.

[0031] Relieving the load on at least one rolling element is particularly desirable in the closed position of a guide system. In this position, at least one rolling element reaches a position within its recess. This relief occurs, for example, when the guide system rails are pushed together and remain statically inactive for an extended period, perhaps along with a drawer in the closed position on the cabinet. During this time, any acting gravitational forces, such as those exerted by the drawer and its contents (e.g., items placed in the drawer), are supported on the rolling elements of the carriage. Without this relief, the rolling elements are detrimentally subject to static deformation or even greater static deformation compared to the proposed relief.

[0032] To relieve the load on at least one rolling element of the carriage, the foremost rolling element of the carriage is positioned in the recessed running surface of the groove when the carriage is closed. It is also conceivable that not just one, but several grooves are provided along the running surface. For example, several grooves are present along the running surface, offset from each other longitudinally, and arranged in such a way that a rolling element rests in a further groove when the guide system is in the fully extended open position. In this position, large leverage forces can exert even more significant force on the rolling elements of the carriage. The groove counteracts the detrimental leverage effect and the associated plastic deformation of the rolling element.

[0033] For example, the indentation is an embossing in one of the running surfaces.

[0034] A groove in the running surface of a rail is preferably created by embossing with an embossing tool with a predefined embossing geometry. For example, an embossing on a rail made of, say, a standard steel material, or on the running surface of the rail, can be created, for example, after the manufacturing process. For instance, an embossing on a rail can be selectively set up in a desired shape and / or at a desired position. Standard embossing tools are available for this purpose.

[0035] For example, a depression formed as an embossing contains a relief relief to compensate for material distortion during the embossing process.

[0036] For example, the embossing is designed to create a gentle chamfer on the running surface for the rolling element to enter the recess. This prevents damage to the rolling elements, or at least to one of them. For instance, the recess is located in the running surface of the motion rail. This allows the motion rail to be used to improve the running characteristics of the guide system. A motion rail is present in both partial and full extension guide systems. This allows for flexible improvement of different guide systems.

[0037] For example, the recess is located in the running surface of the guide rail. For example, the guide rail is a cabinet rail or a fixed rail.

[0038] A recess can be formed in the motion rail or in the guide rail, e.g. between which a carriage with several rolling elements is provided, at least one of which is relieved by the recess.

[0039] However, it is also conceivable to have a recess in both the guide rail and the motion rail. For example, with multiple motion rails in a full extension mechanism, a recess may be formed in exactly one or in both motion rails. The recesses can be designed on the running surfaces so that they are opposite each other in a predetermined position of the running surfaces, in order to increase the clear opening, e.g., the tunnel opening, by means of opposing recesses. However, it is also conceivable to create recesses at different longitudinal positions of the running surfaces of the rails, which do not necessarily have to be superimposed in a closed or open position of the guide system, in order to increase the clear opening. For example, a recess is provided on one running surface for a closed position of the guide system and another recess for an open position, but on a different running surface.

[0040] For example, an alternative to a closed position of the guide system is a recess on a running surface, and for an open position, a recess is also provided, e.g., on the same running surface.

[0041] For example, the recess has a length along the longitudinal extent of the running surfaces that is greater than the diameter of a rolling element. The rolling element under consideration is the one positioned in the recess when the guide system is closed or compressed. For example, the recess has a length along the longitudinal extent of the running surfaces that is greater than an outer dimension, such as the length of a rolling element along the longitudinal extent of the running surfaces. For example, the length of the recess is between 1.5 and 2 times greater than an outer dimension of the rolling element, such as the diameter of a spherical rolling element or the cylinder diameter of a cylindrical rolling element.

[0042] For example, a depth measurement of the recess, such as the depth measurement averaged over the length of the recess, where the depth measurement is based on a plane of the running surface, is 3 to 8 percent of the diameter or the outer dimension of the rolling element.

[0043] To ensure that, in a given positioning of the running surfaces, at least one rolling element lies within the recessed running surface of the depression and makes contact with it, the length of the depression, viewed along the longitudinal extent of the running surface, should be greater than the diameter of a rolling element that is to be relieved of load. Accordingly, the length of the depression in the running surface is designed as such.

[0044] For example, the length of the recess is determined such that the length is, for example, between 0.5 mm and 4.0 mm greater than the diameter of a rolling element.

[0045] For example, the length of the recess is determined such that its total length is 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, or 4.0 mm greater than the diameter or a length dimension of a rolling element. For example, in a designated relief position of the rolling element, the recess, viewed longitudinally, projects both in front of and behind the rolling element, in particular with approximately the same dimension or projection.

[0046] For example, in the area of ​​an entry chamfer of the recess, the projection is larger than on the opposite side, viewed longitudinally, in the intended end position where the unloading is to occur. For example, the projection of the entry chamfer can be twice as large as the projection on the opposite side of the rolling element in the unloading position. For example, the recess has a width transverse to a longitudinal extent of the running surfaces that is greater than the extent of the at least one rolling element transverse to a longitudinal extent of the running surfaces.

[0047] Preferably, the width of the recess is so much larger that a protrusion occurs in a provided relief position of the rolling element, which at least reliably compensates for tolerances and any play that is always present, so that a safe relief position can still be achieved for the at least one rolling element.

[0048] For example, the lateral overhang perpendicular to the longitudinal extent of the running surfaces is between 0.5 mm and 2.0 mm. For example, the lateral overhang perpendicular to the longitudinal extent of the running surfaces is 0.5 mm, 1.0 mm, 1.5 mm, or 2.0 mm. For example, the overhang is the same or identical on both sides, or designed accordingly. For example, the overhang is designed differently on both sides.

[0049] For example, the greatest depth of the depression is less than 0.2 mm.

[0050] For example, the maximum depth of the depression is between 0.03 mm and 0.2 mm, or between 0.05 mm and 0.2 mm, or between 0.1 mm and 0.2 mm. For example, the maximum depth of the depression is exactly 0.05 mm, or exactly 0.1 mm, or exactly 0.15 mm, or exactly 0.2 mm. For example, the maximum depth of the depression is between 0.05 mm and 0.15 mm.

[0051] For example, it is essential that the depth of the recess in the intended relief position of the at least one rolling element is appropriately designed. For example, the relief position of the at least one rolling element correlates with a fully closed or fully retracted position of the motion rail relative to the guide rail, such as the body rail. For example, the relief position of the at least one rolling element correlates with a fully open or fully extended position of the motion rail relative to the guide rail, such as the body rail.

[0052] Relief of a rolling element in a static support position with an immobile motion rail can be achieved, for example, by preventing contact between, for instance, exactly one support section on the outside of the rolling element and at least two support sections of the rolling element that would otherwise be in contact in known guide systems. Alternatively, relief of a rolling element in a static support position with an immobile motion rail can be achieved, for example, by ensuring that, for instance, exactly one support section on the outside of the rolling element is in contact with a lower compressive load compared to the higher compressive load on the same support section of the rolling element in known guide systems in the static situation with an immobile motion rail.

[0053] Preferably, the depth of the recess at this point or the relief position of the rolling element is less than 0.2 mm, less than 0.19 mm, less than 0.18 mm, less than 0.17 mm, less than 0.16 mm, less than 0.15 mm, less than 0.14 mm, less than 0.13 mm, less than 0.12 mm, less than 1.0 mm, less than 0.09 mm or less than 0.08 mm.

[0054] It is conceivable that a first rolling element, where "first" refers to an end position in the longitudinal direction of the guide system or a running surface such as the motion rail (for example, a first roller or ball bearing), experiences a greater depth and thus greater relief in a wedge-shaped depression in the relief position than a second rolling element that finds a relief position in a shallower section of the same wedge-shaped depression. This also makes it conceivable that continuous relief can occur for one, two, or even several rolling elements. For example, continuous relief in a relief position, such as with a collapsed guide system, can occur for exactly one rolling element, exactly two rolling elements, or even more than two rolling elements.For example, each individual rolling element within the recess experiences a different degree of stress relief compared to another rolling element within the recess. Similarly, each individual rolling element among several rolling elements mounted in a common carriage experiences a different degree of stress relief.

[0055] For example, exactly one rolling element among several rolling elements mounted in a common carriage experiences a relatively greater reduction in stress than the remaining rolling elements in the carriage. Alternatively, the remaining rolling elements in the common carriage may experience no reduction in stress, or all may experience the same lower reduction in stress compared to the one rolling element that is more heavily relieved.

[0056] For example, the recess is wedge-shaped in whole or in part, or at least has a wedge-shaped lead-in chamfer. A surface formed by the recess serves, for example, as a running and support surface for the at least one rolling element. For example, the recess has a straight section, such as the straight lead-in area. For example, the straight lead-in section is straight over its entire extent and inclined to the running surface. For example, the straight section is inclined to the associated running surface, such as the plane spanned by the running surface. For example, the angle between the lead-in area and the running surface or the plane spanned by the running surface is, for example, between two degrees and six degrees. For example, the angle between the lead-in area and the running surface or the plane spanned by the running surface is, for example, three or 3.0 degrees, or four or 4.0 degrees. At the end of the wedge-shaped lead-in area, e.g.,For example, at the deepest point of a wedge-shaped depression, such as a wedge-shaped embossing, the embossing has a steep, inclined or vertical section relative to the running surface. For instance, the steeper section might only make up a fraction of the length of the depression; e.g., the steeper section might be 5 to 10 percent of the length of the wedge-shaped entry area, or the wedge-shaped entry area might make up 90% to 95% of the length of the depression.

[0057] For example, the depression can be designed as a plateau-shaped depression as an alternative to the wedge-shaped depression, e.g. as a symmetrical plateau-shaped depression, e.g. with a respective sloping or concave transition that is present between the remaining unembossed running surface and a bottom of the plateau depression.

[0058] For example, the depression is designed as a plateau-shaped depression, e.g., with a wedge-shaped inlet chamfer at each end of the plateau depression. For example, the plateau depression is symmetrically designed with each wedge-shaped inlet chamfer. For example, the straight plateau has a length that corresponds to the combined length of the two inlet chamfers adjoining it at the front and rear. For example, the straight plateau comprises half the length of the entire depression. Each angled inlet section comprises, for example, one quarter of the total length of the depression.

[0059] For example, the recess is dimensioned and positioned such that, in the closed state of the guide system, at least one rolling element is positioned in the recess with its contact point to the running surface. Alternatively, the recess is dimensioned and positioned such that, in the closed state of the guide system, exactly one rolling element of an associated carriage, which accommodates multiple rolling elements, is positioned in the recess. For example, the relevant, e.g., first contact point of the rolling element is exposed or free of contact with the recess. A further, e.g., second supporting contact point of the rolling element with supporting contact to a running surface remains in place in the closed state. This results in partial relief compared to a supporting contact of both contact points with a conventional, non-section-recessed running surface design.

[0060] For example, the recess is dimensioned and positioned in such a way that, in the closed state of the guide system, exactly two rolling elements of an associated carriage, which accommodates exactly three or more than three rolling elements, are positioned in the recess.

[0061] For example, the recess is dimensioned and positioned such that, in the closed state of the guide system, all rolling elements of an associated carriage, which accommodates multiple rolling elements, are positioned in the recess. Alternatively, the recess is dimensioned and positioned such that, in the closed state of the guide system, all rolling elements of an associated carriage, which accommodates multiple rolling elements, are positioned in the recess with varying degrees of load relief or at different locations within the recess, e.g., different depths, relative to the running surface.

[0062] For example, a closed state of the guide system means that the movement rail is completely retracted relative to the guide, fixed, or cabinet rail. The closed state of the guide system correlates with the sliding element being in a closed position against the cabinet when the guide system is mounted between the fixed cabinet and the movable sliding element.

[0063] For example, a closed state of the guide system is defined by a mechanical stop that includes areas formed on the guide rail and / or on the motion rail and / or the push element, which interact or come into stop position against each other in the closed state.

[0064] Character description

[0065] Further features and advantages of the invention are explained in more detail with reference to the exemplary embodiments schematically illustrated in the figures. Specifically, the figures show:

[0066] Fig. 1 shows a guide system with a guide rail and a motion rail in a perspective oblique view from above; Fig. 2 shows an enlarged section of a front end section of the guide system according to Fig. 1 with the motion rail shown transparently.

[0067] Fig. 3 shows a section of Fig. 2 from the side in the area of ​​a recess in the motion rail,

[0068] Fig. 4 shows an enlarged section of Fig. 3,

[0069] Fig. 5 shows a section of a guide system in an alternative embodiment of a recess in a view similar to Fig. 3.

[0070] Fig. 6 shows an enlarged section of a guide system similar to the view in Fig. 4 with an alternative design of a recess,

[0071] Fig. 7 shows a highly schematic view of a recess in the longitudinal section of a section of a motion rail.

[0072] Fig. 8 shows an alternative recess to Fig. 7 in a view corresponding to Fig. 7.

[0073] Fig. 9 shows a further alternative recess in a corresponding view, as shown in Figs. 7 and 8.

[0074] Fig. 1 shows a guide system 1 in its closed state, wherein the guide system 1 comprises a guide rail 2 and a motion rail 3 that is telescopically displaceable relative to the guide rail 2 and which are pushed together. In Fig. 1, a longitudinal extent L of running surfaces 10, 11 is indicated, which coincides with the longitudinal extent of the guide system 1 and a sliding direction of a push element that is mounted on a body with the guide system 1.

[0075] The guide system 1 is designed to linearly movably mount a sliding element of a piece of furniture on a cabinet body. A carriage 4 of the guide system 1 is arranged with several rolling elements 5-9, allowing it to be displaced and guided between the guide rail 2 and the motion rail 3. In the assembled state of the guide system 1, the motion rail 3 is movable relative to the guide rail 2, with the guide rail 2 having a running surface 10 and the motion rail 3 having a running surface 11. The running surfaces 10 and 11 are opposite each other or, viewed vertically, spaced apart from one another, e.g., running parallel to each other.

[0076] On the running surfaces 10, 11, in the assembled state of the guide system 1, rolling elements 5-9 of the carriage 4 are guided to roll. A clear distance between the running surfaces 10, 11, which results, for example, in the normal direction to the running surfaces 10 and 11, e.g., vertically between running surface 10 and running surface 11, defines a tunnel dimension TM at this point, within which the rolling elements 5-9 move together with the carriage 4. This point is, for example, a longitudinal point of the guide system 1 along the longitudinal extent L of the guide system 1.

[0077] At least one running surface 11 of the running surfaces 10 and 11 has a recess 12.

[0078] For example, indentation 12 is an imprint.

[0079] The recess 12 is dimensioned such that when a contact point of at least one rolling element 5 is positioned in the recess 12, contact between this rolling element 5 and the recessed running surfaces 10, 11 at that point still exists. However, a targeted partial relief of this rolling element 5 occurs because the tunnel dimension TM1 in the recess 12 is increased compared to sections that are not recessed or less recessed, relative to the tunnel dimension TM of the running surfaces 10, 11 at points without a recess. The tunnel dimensions TM and TM1 result from the distance between the running surfaces 10, 11 between two adjacent rails or between the guide rail 2 and the motion rail 3.

[0080] For clarification, the tunnel dimensions TM, TM1 differ from another dimension or tunnel dimension, e.g., on a single component of the guide system 1, such as a single rail of the guide system.

[0081] For example, the recess 12 has an entry chamfer 13 for the at least one rolling element 5.

[0082] For example, the recess 12 between the running surfaces 10, 11 is positioned such that, in a closed state of the guide system 1, such as a closed position of the thrust element, an upper contact point K of at least one rolling element 5 of the carriage 4 lies in the recessed running surface 11 of the recess 12. The upper contact point K borders an air gap that is intentionally provided by the recess 12. A lower contact point K1 on the outside of the rolling element 5 simultaneously bears, for example, a load-bearing support against the running surface 10.

[0083] For example, the recess 12 has a length L1 in a longitudinal extent L of the running surfaces 10, 11 which is greater than a diameter D of the rolling body 5 (see Fig. 5).

[0084] For example, the recess 12 has a width B transverse to a longitudinal extent L of the running surfaces 10, 11 (see Fig. 1) which is larger than the extent of the at least one rolling body 5 transverse to a longitudinal extent L of the running surfaces 10, 11.

[0085] For example, the recess 12 according to Fig. 5, or a recess 12b according to Fig. 8, or a recess 12c according to Fig. 9 is entirely or partially wedge-shaped, or has at least a wedge-shaped entry area, such as an entry chamfer 13 and / or a chamfer 14 (see Fig. 9). For example, the recess 12b is designed as a wedge recess or as a wedge embossing.

[0086] For example, a depression 12a according to Fig. 7 is designed as a plateau depression or as a plateau embossing.

[0087] In Fig. 9, a depth T of the depression 12c is indicated relative to the running surface 11.

[0088] In Fig. 8, for example, a maximum depth T of the recess 12b relative to the running surface 11 is indicated. The maximum depth T of the recess 12b is, for example, less than 0.2 mm or less than 0.08 mm.

[0089] For example, the depression 12c is designed as a plateau depression or as a plateau embossing with a ramp on both sides with the inlet slope 13 and the slope 14 (see Fig. 9).

[0090] The leading edge 13 is designed, for example, for a smooth running-in of a rolling element, since otherwise, when the guide system 1 is moved, damage to the rolling element 5 occurs or cannot be ruled out when the rolling element 5 transitions from the remaining running surface 11 into the recess 12, 12b, 12c.

[0091]

[0092] 1 Guide system 2 Guide rail 3 Motion rail 4 Carriage

[0093] 5 rolling elements

[0094] 6 rolling elements

[0095] 7 rolling elements

[0096] 8 rolling elements

[0097] 9 rolling elements

[0098] 10 Running surface

[0099] 11 Running surface

[0100] 12 In-depth study

[0101] 12a Advanced

[0102] 12b Advanced

[0103] 12c Advanced Level

[0104] 13 Inlet slope 14 Slope

Claims

Claims 1. Guide system (1), wherein the guide system (1) comprises a guide rail (2) and a motion rail (3), wherein the guide system (1) is configured to arrange a push element linearly movably on a body, wherein a carriage (4) of the guide system (1) with several rolling elements (5-9) is arranged between the guide rail (2) and the motion rail (3), such that the motion rail (3) is movable relative to the guide rail (2) in the assembled state of the guide system (1), wherein the guide rail (2) has a running surface (10), wherein the motion rail (3) has a running surface (11), wherein these running surfaces (10, 11) are opposite each other, wherein the rolling elements (5-9) of the carriage (4) are guided to roll on the running surfaces (10, 11) in the assembled state of the guide system (1), wherein a clear distance between the running surfaces (10, 11) forms a tunnel dimension at this point defined within which the rolling elements (5-9) move, characterized by,that at least one of the running surfaces (10, 11) has a recess (12, 12a-12c) dimensioned in such a way that when a contact point of at least one rolling element (5) is positioned in the recess (12), there is still contact between this rolling element (5) and the running surface (10, 11) which is recessed at this point, but a targeted partial relief of this rolling element (5) takes place in that the tunnel dimension in the recess (12) is increased compared to sections that are not recessed or less recessed.

2. Guide system (1) according to the preceding claim 1, characterized in that the recess (12, 12b, 12c) has an entry chamfer (13) for the at least one rolling element (5).

3. Guide system (1 ) according to one of the preceding claims, characterized in that the recess (12, 12a-12c) between the running surfaces (10, 11 ) is positioned in such a way that in a closed position of the push element a contact point of at least one rolling element (5-9) of the carriage (4) lies in the recessed running surface (11 ) of the recess (12, 12a-12c).

4. Guide system (1 ) according to one of the preceding claims, characterized in that the recess (12,12a-12c) is an embossing in one of the running surfaces (10, 11 ).

5. Guide system (1 ) according to one of the preceding claims, characterized in that the recess (12,12a-12c) is arranged in the running surface (11 ) of the motion rail (3).

6. Guide system (1) according to one of the preceding claims, characterized in that the recess is arranged in the running surface (10) of the guide rail (2).

7. Guide system (1) according to the preceding claim 5, characterized in that the recess (12, 12a-12c) has a length in a longitudinal extent of the running surfaces (10, 11) which is greater than a diameter of a rolling body (5-9).

8. Guide system (1) according to one of the preceding claims, characterized in that the recess (12) has a width transverse to a longitudinal extent of the running surfaces (10, 11) which is greater than the extent of the at least one rolling body (5-9) transverse to a longitudinal extent of the running surfaces (10, 11).

9. Guide system (1 ) according to one of the preceding claims, characterized in that the maximum depth of the recess (12,12a-12c) is less than 0.2 mm.

10. Guide system (1 ) according to one of the preceding claims, characterized in that the recess (12,12a-12c) is wedge-shaped in its entirety or in part, or at least has a wedge-shaped leading edge (13).

11. Guide system (1 ) according to one of the preceding claims, characterized in that the recess (12,12a-12c) is dimensioned and positioned such that in the closed state of the guide system (1) at least one rolling element (5-9) is positioned with its contact point to the running surface (10, 11 ) in the recess (12,12a-12c).

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