EP3995047B1 - Furniture, furniture pull-out and device for guiding a furniture pull-out - Google Patents

Description

State of the art

Devices such as rail guides, such as full extensions or partial extensions for moving furniture extensions such as drawers and the like on a piece of furniture, are known. The rail guides are used for the linear guidance of a furniture pull-out relative to a body of the furniture, the device having, for example, a plurality of slidably connected rails, comprising a body rail that can be attached to the body, an extension rail that can be attached to the furniture pull-out and an extension rail that acts between the body rail and the pull-out rail Middle rail. The pull-out rail and the middle rail are displaceable relative to each other and relative to the body rail in a first sliding direction and in a second sliding direction opposite to the first sliding direction for opening and closing the furniture pull-out.

The disadvantage of such devices without synchronization is that the sequence or process of the two movable rails when opening or closing is not defined. Starting from the retracted or closed furniture pull-out, when opening, for example, the pull-out rail is first or alone pulled out relative to the middle rail, then the middle rail moves relative to the body rail and thus the pull-out rail together with the middle rail into the maximum opening position. The other time, the middle rail is first pulled out together with the extension rail opposite the body rail. If the middle rail is maximally extended relative to the cabinet rail, then the pull-out rail alone moves with it the furniture pull-out or the drawer is relative to the standing middle rail.

The body rail is generally fixed or fixed in position on the body of the furniture.

The process or sequence of movements of the rails influences an opening profile and a closing profile of the rail guide and thus on a mechanical load on the guide, in particular due to the loading of the drawer and the guide's own weight. Depending on which process takes place, the opening and closing forces behave differently, for example different forces are required to manually open and close the drawer.

In addition, with rail guides it is possible that, for example if the pull-out rail alone extends first, a distance between the middle rail and the body rail becomes comparatively very small and, for example, if the drawer is loaded in an unfavorable loading situation, it occurs when the middle rail is subsequently extended relative to the body rail The disadvantage is that the middle rail and the body rail come into contact or the middle rail moves along the body rail. This is disadvantageous due to, for example, wear and noise.

They become the state of the art US 6244678 B1 and US 6789862 B2 called.

Task and advantages of the invention

The object of the present invention is to minimize or avoid the disadvantages discussed above and to advantageously provide a corresponding device for guiding a furniture pull-out and a furniture pull-out and a piece of furniture.

The invention is based on a device for guiding a furniture pull-out relative to a body, the device having three rails, comprising a body rail that can be attached to the body and a pull-out rail that can be attached to the furniture pull-out and a middle rail acting between the body rail and the pull-out rail, the pull-out rail and the middle rail being displaceable relative to one another and relative to the body rail in a first sliding direction and in a second sliding direction, so that the device lengthens or shortens telescopically upon a sliding movement of the middle rail and / or the pull-out rail in a sliding direction relative to the body rail, with a control arrangement being present for specifying the relative movement of the rails to one another. The device for guiding a furniture pull-out is also referred to below as a guiding device.

The essence of the invention is that the control arrangement is formed between two adjacent rails, the control arrangement having an engagement section on one rail and a coupling element on the other rail in such a way that, depending on the position of the two rails relative to one another, a coupled state of the engagement section and of the coupling element exists and a decoupled state of the engagement section and the coupling element exists, in which the engagement section is completely separated from the coupling element, and wherein in a coupled state of the engagement section and the coupling element, the engagement section and an evacuably mounted contact section of the coupling element are pressed together, so that a rail During a displacement movement in a sliding direction, the other rail takes along in the sliding direction.

This advantageously allows a sequence or control of the movement sequence of the rails to be influenced automatically and reproducibly. In particular, an opening profile and/or a closing profile of the rail guide can be specified. A mechanical load on the guide, in particular due to the loading of the drawer and the guide's own weight, can be taken into account with the device with regard to a desired mechanically stable static and dynamic function of the rail guide. This allows the necessary opening and closing forces to be influenced, so that intuitive operation of the furniture pull-out is advantageously possible.

With the invention it is possible that when the pull-out rail is pulled out and pushed in, a distance between the middle rail and the body rail remains reliably comparatively constant, and elastic deformation of the rails when moving the loaded furniture pull-out remains within a tolerable or acceptable range. This means that elastic deformation of the rails when moving can be minimized. In particular, it can be avoided that, particularly in the event of an unfavorable loading situation of the drawer, disadvantageous contact occurs between sections of the middle rail and the body rail that are normally at a distance. This also prevents these sections from undesirably brushing against each other on the center rail on the one hand and the body rail on the other. This advantageously eliminates wear and tear and unpleasant grinding noises. The rails accordingly move in a controlled manner relative to one another via corresponding bearing arrangements with, for example, a bearing cage and sliding bearing elements accommodated thereon. The relative movement advantageously only takes place in silent or low-noise and friction-minimized contact of the rolling-moving bearing elements provided for this purpose on the rails and not with abrasive contact with the other sections of the adjacent rails.

The mechanical coupling of the engagement section and the coupling element is realized, for example, by releasably clipping in, the coupling force required for this being achieved with the force applied to it from the outside when opening or closing the furniture pull-out. The engagement section is captured by the coupling element and later released again when the engagement section and coupling element are separated. This force is provided by the user in particular by pulling on the furniture extension or pressing in the furniture extension. Conversely, the decoupling force for separating the engagement section and the coupling element is also applied from the outside by pulling or pushing.

The coupling element or the contact section preferably comprises a spring-loaded or elastically deflectable metal or plastic part. The engagement section preferably comprises an element which protrudes in a raised manner towards the coupling element, such as a pin or pin element. The shape of the contact section in the longitudinal direction of the device can be straight or curved. Preferably, a contact section in the longitudinal direction of the device has a first straight flat area aligned at an angle to the longitudinal direction of a rail and a second area which is angled thereto and is also aligned at an angle to the longitudinal direction of a rail. The two areas are preferably roof-shaped in the longitudinal direction and converge in a further comparatively short area of the contact section, which forms a narrow point between, for example, two opposite contact sections. The first area and the second area preferably differ in length, for example by twice, three times or four times. The longer area deflects elastically under a lower counterforce than the shorter area, while the lower area deflects under a larger counterforce. The counterforce is provided by pressing the engagement section.

The principle of the invention is used when opening and closing the furniture pull-out. When closing, the force like a force peak, which is necessary to release the coupling state, is less than the force to set up the coupling state.

This is preferably achieved by a different spatial positioning of respective areas of the system sections. With the predeterminable shape or the shape adjustment of the coupling element, it is achieved that direction-dependent spring forces can be provided with the coupling element or with its contact sections, as far as the interaction with the engagement section is concerned. Directional dependency is based on a direction of approach of the engagement section to the coupling element, i.e. dependent on a direction of movement of the extension and/or middle rail in the opening direction or closing direction of the device.

Preferably, several system sections are present in interaction. The contact sections each have an area such as a clamping point, with the engagement section between the contact points of z. B. can be clamped or held in two contact sections. The coupling element preferably comprises, for example, two movable contact sections. It is also possible for the coupling element to have a movable contact section and, at a distance from one another, a contact section which is fixed on the coupling element. The engagement section is then clamped in the spaced-apart free space in the coupling state of the engagement section and the coupling element. In the coupled state with the coupling element, the engagement section is accordingly preferably clamped on both sides between the two or more contact sections. At least one or the z. B. two contact sections are designed to be able to move back and forth, in particular resiliently moving back and forth.

The movement of the extension and/or middle rail in the opening direction means a movement in which a telescopic extension of the guide device basically takes place. The extension of the guide device is, for example, in the range of doubling the minimum length of the guide device. Conversely, a movement of the extension and/or middle rail in the closing direction means a movement in which a telescopic shortening, a pushing together, of the guide device takes place.

In the case of two opposite contact sections according to the invention, which are preferably present symmetrically to one another on the coupling element or the rail, each has at least two differently angled or dimensioned longitudinal sections. The longitudinal sections include, on the one hand, a longer, flatter angled longitudinal section from the narrow point in the direction P1 and, on the other hand, a shorter, steeper angled longitudinal section from the narrow point in the direction P2. The two longitudinal sections are connected to each other via the bottleneck.

The longer longitudinal section is in the range of z. B. 30 degrees, based on the longitudinal axis of the rail in question, angled inwards from one end of the coupling element to the narrow point.

The shorter longitudinal section is in the range of z. B. 45 degrees, based on the longitudinal axis of the rail in question, angled inwards from the other end of the coupling element to the narrow point.

The longer longitudinal section is preferably approximately three to four times longer than the shorter longitudinal section.

Due to the special shape of the coupling element or, for example, two contact sections of the coupling element, a z. B. significantly greater force is required to overcome the spring forces provided by the contact sections than when closing the furniture pull-out. This advantageously enables the middle rail to be safely taken along by the pull-out rail when the furniture pull-out is opened. During normal operation, the furniture pull-out has a high level of momentum when opened, which is why the operator or user hardly notices the effect of the pull-out when opening. Since when closing the force to overcome the spring force of the contact sections is significantly smaller due to their design, it is avoided that closing errors occur, in particular that when closing the furniture pull-out, the pull-out rail first moves relative to the extended middle rail and only then when the pull-out rail is completely is retracted relative to the middle rail, the two rails, pull-out and middle rail, retract together relative to the body rail.

An asymmetrical design of the contact sections is advantageously implemented for this purpose, based on their effect in the opening and closing directions of the furniture pull-out, i.e. in particular from which side the engagement section comes into contact with the coupling element or the contact sections moves towards or away from them, which leads to coupling or uncoupling. With the asymmetrical design of the contact sections, different force ratios come into effect in different directions of movement of the extension or middle rail, i.e. different driving forces and different forces such as release forces, which lead to the engagement section slipping relative to the contact sections in the respective direction.

Preferably, with two contact sections, an intermediate region that is laterally delimited by the two contact sections is formed, for example in a channel-like manner, which represents a movement path for a relative movement between the engagement section and the coupling element. The intermediate area forms a guide for the engagement section, moving easily past it or without lateral contact to a point in the intermediate area, such as preferably a narrow point, in which opposing sections of the contact sections hold the engagement section in a resiliently clamping manner in the coupled state of the engagement section and the coupling element.

The control arrangement is preferably present between the middle rail and the extension rail.

According to another advantageous embodiment of the invention, the control arrangement is preferably present between the center rail and the body rail.

If the control arrangement is present between the center rail and the extension rail, the engagement section is preferably present on the extension rail and the coupling element on the center rail. However, the reverse arrangement is also advantageously possible, according to which the engagement section is preferably present on the middle rail and the coupling element is present on the pull-out rail.

According to a further aspect of the invention, the control arrangement is formed between the body rail and the middle rail, the control arrangement having an engagement section on one rail and a coupling element on the other rail such that, depending on the position of the two rails relative to one another, a coupled state of the engagement section and the coupling element exists and a decoupled state of the engagement section and the coupling element exists, in which the engagement section is completely separated from the coupling element, and wherein in a coupled state of the engagement section and the coupling element, the engagement section and an evacuably mounted contact section of the coupling element are pressed together, so that the Middle rail is fixed in position relative to the body rail.

This can be used to determine that, for example, starting from the pushed-together state of the device, preferably starting from the completely or almost completely pushed-together state of the device, when the pull-out rail is pulled out or when moved in the opening direction, the middle rail remains unmoved on the body rail coupled to it via the control arrangement and only later, when the pull-out rail is preferably completely extended to the middle rail, does the middle rail decouple from the body rail and move relative to the body rail in the opening direction or further in the direction of movement previous to the pull-out rail when the device is pulled out. The middle rail therefore remains retracted on the body rail at the beginning of an opening movement of the furniture body or remains in a fixed position.

Advantageously, in the mechanically coupled state of the engagement section and the coupling element, the contact section of the coupling element is prestressed with a predetermined biasing force in the direction of the engagement section, so that when a release force is reached, which acts from the engagement section against the biasing force on the contact section, the contact section evades and results in the lifting of the Coupling state between the engagement section and the coupling element, the two rails being decoupled from one another and displaceable relative to one another.

This allows a sequence of the pull-out rail and the middle rail to be predetermined with one another and/or relative to the body rail when opening and closing the furniture pull-out. In particular, the process depends on the preload force. The pretensioning force and, depending on this, the release force, are dependent, for example, on the frictional forces acting when moving the rails, which act between them when moving the rails. The acting forces such as frictional forces, static friction and/or sliding or rolling friction are in turn z. B. depending on factors such as the load or weight of the furniture pull-out.

A comparatively lower predetermined preload force leads to a cancellation of the coupled state between the engagement section and the coupling element with a lower release force. A canceled coupling state means e.g. B. that the two rails in question separate and can move or move relative to one another. Regardless of this, the relative movement of two rails is limited by stops present on the rails, for example, in the direction of movement or displacement of a rail relative to an adjacent rail of the device.

Load-transmitting bearing means for movably supporting the rails relative to one another are preferably provided between adjacent rails, such as roller carriages with rolling bearing bodies accommodated thereon, such as rolling bearing balls or rolling bearing rollers. The load-transmitting bearing means are used for the controlled, uniform displacement movement of the rails relative to one another.

A further advantage arises if the control arrangement is designed between the middle rail and the pull-out rail.

This arrangement is in the use state of the guide device on a piece of furniture for the opening movement and/or closing movement of the furniture pull-out with the guide device is important. The following declaration therefore assumes the usage condition. The control arrangement between the middle rail and the pull-out rail can, for example, be influenced or specified, e.g. B. starting from the fully collapsed guide device or with the furniture pull-out completely pushed in or closed on the furniture, that the middle rail initially or initially moves relative to the body rail, i.e. the middle rail and the pull-out rail move together in the opening direction. In a first opening phase, the middle rail is moved out or the middle rail is pulled out relative to the body rail. The middle rail is initially taken along by the pull-out rail, which is moved by external action, via the coupled control arrangement or via the engagement section and the coupling element, which are connected in a force-transmitting manner. The middle rail is accordingly moved relative to the body rail. The release force, which acts from the engagement section against the preload force on the contact section, is initially not reached or exceeded, which means that the coupled state is not canceled but is maintained. This means that the pull-out and middle rails move together in the first movement phase when the furniture pull-out is opened from the closed state.

After reaching a maximum possible extension position of the middle rail relative to the body rail, which is achieved, for example, by mechanical stops, the extension rail and middle rail are decoupled. Afterwards, in a second movement phase, when the furniture pull-out is opened, only the pull-out rail moves, for example. B. up to a maximum possible extension position. The middle rail then remains stationary in the second movement phase.

Without the control arrangement according to the invention between the middle rail and the pull-out rail, it can, in particular due to the loading condition of the furniture body and/or depending on Friction effects lead to undefined movement states of the middle and extension rails, after which e.g. B. the middle rail does not move predictably, does not move with the pull-out rail or, for example, moves interruptedly, which e.g. B. means a sudden pulling out of the furniture pull-out, which is undesirable.

A joint movement of the pull-out rail and the middle rail is generally desirable for mechanical reasons, especially when the furniture pull-out begins to open on the furniture body.

The control arrangement between the middle rail and the pull-out rail is particularly advantageous if it is desired that when the furniture pull-out is opened relative to the furniture body, the pull-out rail with the furniture pull-out first extends together with the middle rail relative to the remaining part of the guide device.

According to the invention, the control arrangement is formed between the body rail and the middle rail. This arrangement is important for the opening movement and/or closing movement of the furniture pull-out with the guide device when the guide device is in use on a piece of furniture. The explanation below assumes the usage state, i.e. when the device is mounted on the furniture. The control arrangement between the body rail and the middle rail can, for example, be influenced or specified, e.g. B. starting from the fully collapsed guide device or with the furniture pull-out fully pushed in or closed on the furniture, that the middle rail initially remains stationary in a first opening phase. This represents an exceptional situation. The middle rail is initially not taken along by the pull-out rail, which moves alone. Rather, the middle rail remains in a fixed position on the body rail or is coupled to it via the control arrangement. Accordingly, the release force from the engagement section counteracts the preload force on the contact section acts, initially not reached or exceeded, which means that the coupled state between the middle and body rail is not canceled but is maintained.

The control arrangement can therefore advantageously be used to specify that the middle rail moves relative to the body rail only after the extension movement of the extension rail has begun or later, when the furniture extension has already moved out slightly on the furniture. Then the pull-out rail is moved further in the opening direction together with the middle rail or the pull-out rail is stationary relative to the moving middle rail.

Without the control arrangement according to the invention between the body rail and the middle rail, undefined states of movement of the middle and pull-out rails can occur, in particular due to the loading status of the furniture body and / or depending on friction effects, after which z. B. the middle rail moves unpredictably or stops when the pull-out rail or the furniture pull-out moves in the opening direction.

A joint movement of the pull-out rail and the middle rail is only possible when a previously acting coupling force for coupling the middle and body rail, which is provided with the control arrangement between the middle rail and the body rail, is or has been canceled.

The control arrangement between the center rail and the body rail is particularly advantageous if it is desired that when the furniture pull-out is opened relative to the furniture body, only the pull-out rail with the furniture pull-out extends relative to the remaining part of the guide device.

According to another advantage, the contact section of the coupling element is present on the coupling element in a resiliently deflectable manner. This means that, on the one hand, a force that can be defined in a defined manner can be provided in accordance with a spring force originating from the resilient contact section become. The spring force provides the preload force of the respective contact section and acts in the direction of the engagement section. The release force therefore also depends on the resilient contact section. The resilient contact section is preferably reversibly resiliently movable back and forth due to the resilient evasiveness. After the coupling state between the engagement section and the coupling element has been canceled, the reversibly movable contact section advantageously automatically returns to a waiting or starting position due to the resilient evasiveness of the contact section. The waiting or initial position of the contact section, i.e. an unloaded state or without contact with the engagement section, is left again during the next coupling process of the engagement section and the coupling element, in that the engagement section pushes the contact section or the two contact sections away slightly. Then the engagement section is held by the pressing or clamping contact sections, which causes the two rails in question to be coupled. Instead of the waiting or starting position of the contact section, the contact section then assumes a clamping or coupling position. The contact sections can move out to different extents over a certain range, so that it is always ensured that the engagement section is held in a clamping manner.

If, for example, there are preferably exactly two contact sections, at least exactly one contact section can be resiliently deflected, preferably both contact sections can be resiliently deflected, preferably in the same way. Preferably there are two identical contact sections which can be deflected in an identically resilient manner. If two contact sections are provided, which is preferred, they preferably leave a gap between them in which the engagement section can dip or clip in appropriately with the corresponding relative position of the two rails. The immersion preferably takes place with some frictional contact between the engagement section and the two contact sections. In the coupling state, the engagement section is then in clamping contact between the contact sections. The When the engagement section is immersed, contact sections deflect somewhat resiliently away from each other, so that the distance between the two engagement sections increases. The engagement section is held clamped between the two engagement sections. An outer diameter of the engagement section is advantageously slightly larger than a distance between the two contact sections in their clamping area, such as. B. a bottleneck of a path along which the engagement section can be moved relative to the coupling element when the two rails are moved relative to one another. The clamped state is a coupled state of the coupling element and the engagement section.

According to a further advantage, the contact section of the coupling element can be resiliently deflected in a direction transverse to a longitudinal direction of the rails. This is advantageous because the rails, whose longitudinal directions coincide or have the same spatial orientation, move in their longitudinal direction. This means that the engagement section also moves in the longitudinal direction and thus in the longitudinal direction of the other rail, on which the two contact sections, for example, are present. This means that the clamping and releasing takes place through the z. B. two laterally deflectable contact sections are particularly advantageous.

The engagement section is advantageously held securely clamped, for example laterally, by two opposite and spaced resilient contact sections in the coupled state of the engagement section and coupling element.

An advantageous modification of the invention is that the engagement section is associated with a separate component which is connected to a rail by a plug connection. This means that a pull-out, middle and/or cabinet rail can be easily and optionally, for example. B. can be subsequently connected, preferably releasably, to the engagement section.

Advantageously, the component with the engagement section can be manually attached and removed to or from the rail.

Alternatively, the engagement section can also be designed as a feature or the like on the respective rail, for example be integrally present thereon.

It is also advantageous if the coupling element is associated with a separate component which is connected to a rail by a plug connection. The coupling organ with the z. B. two movable contact sections can be detachably attached to the rail, for example. The attachment is on a side which faces a side of an adjacent rail on which the associated component with the engagement portion of the control arrangement is present.

Alternatively, the coupling element can also be designed in one piece on the rail.

The engagement section and/or the coupling element, if not formed in one piece with the generally metallic rail, preferably consist of a plastic material. Alternatively, a metal material or composite material is possible.

According to the invention, it is provided that an evasive force acting on the contact section, which can be applied by contacting the engagement section on the contact section, in order to bring the contact section from its waiting position into a clamping position, is viewed side-dependently in the longitudinal direction of the device, depending on which side the engagement section is from approaches the contact section, a different magnitude of force or a different amount of force is necessary to reach the clamping position of the contact section. The coupling element is advantageously designed in such a way that a measure of the prestressing force which acts on the engagement section when the engagement section and the coupling element are mechanically coupled differs in relation to the direction of displacement of the rails. This means that the sequence of the rail relative movement during the opening process and/or the closing process of the furniture pull-out can be individually adjusted.

Preferably, an evasive force acting on the contact section, which can be applied by contacting the engagement section on the contact section in order to bring the contact section from its waiting position into a clamping position, is considered side-dependent in the longitudinal direction of the device, depending on which side the engagement section approaches the contact section , a different amount of force or a different amount of force is necessary to reach the clamping position of the contact section. Accordingly, a contact section has two different areas with, for example, different rigidity against rebound.

The one from the engagement section, such as. B. the pin, with contact on the contact section, the preload force to be overcome in order to push back the contact section in order to achieve the coupled state between the coupling element and the engagement section is greater on one side of the coupling element or the contact section than on the other side of the coupling element or of the investment section.

One advantage is based on the fact that the coupling element is designed in such a way that a measure of the prestressing force which acts on the engagement section when the engagement section and the coupling element are mechanically coupled is larger in a displacement direction of the rails through which the device extends telescopically as a measure of the biasing force acting on the engagement portion when the engagement portion and the coupling member are mechanically coupled, in a direction of displacement of the rails, through which the device shortens telescopically. This allows the sequence of the pull-out rail and the middle rail, i.e. together or relative to one another, to be specified when opening and closing the furniture pull-out with the device in the use state. This means that the guide device is mechanically advantageous when in use. Undesirable pull-out situations between rails are avoided, for example Unintentional lowering of the extension and/or middle rail under load can be avoided or minimized.

It is also advantageous if the coupling element is designed in such a way that a measure of the prestressing force which acts on the engagement section when the engagement section and the coupling element are mechanically coupled is smaller in a displacement direction of the rails through which the device extends telescopically as a measure of the biasing force acting on the engagement portion when the engagement portion and the coupling member are mechanically coupled, in a direction of displacement of the rails, by which the device shortens telescopically. This means that the sequence of the pull-out rail and/or the middle rail, i.e. a common sliding movement relative to the body rail and a movement relative to one another, can be advantageously specified when opening and closing the furniture pull-out with the device in the use state. Here too, undesirable pull-out situations between rails can be avoided.

Advantageously, the coupling element has two separate and spaced-apart contact sections, both of which come into contact with the engagement section when the engagement section and the coupling element are mechanically coupled. The two contact sections are preferably advantageous for a defined clamping of the engagement section. The two contact sections are preferably designed identically opposite each other. The contact sections are preferably formed by arcuate arms which, for. B. can be reversibly elastically rebounded. The arms are preferably articulated at both longitudinal ends or on both sides, preferably each by means of a film joint.

It is also advantageous for the coupling element to have a passage area of the coupling element, which specifies a path section that the engagement section covers during a relative movement of the engagement section and the coupling element. This allows the type of coupling to come about and decoupling and its strength e.g. B. their clamping force can be influenced. The coupling behavior and the coupling behavior between the engagement section and the coupling element can also be specified.

The z. B. channel-like passage area preferably has a changing width in the longitudinal direction of the coupling element or the rail in question, with unloaded contact sections. The passage area preferably forms a bottleneck between two opposite areas of the two contact sections. The coupling takes place there, with the engagement section filling or occupying the otherwise free intermediate area at the bottleneck.

The width refers transversely to the sliding direction of the rails. The contact sections are preferably present on both sides of the path section along its length.

The coupling element accordingly preferably has a passage area of the coupling element with opposite walls, one wall comprising a contact section. Both walls preferably each form a contact section which is designed to be resilient. The engagement section such as B. a pin is acted upon on both sides by a contact section in the coupled state, in particular touched in a clamping manner. This is preferably done at the bottleneck.

The invention also relates to a furniture pull-out with a device as described above. The furniture pull-out is z. B. a drawer on which the guide device is present on the side and / or below. As a rule, two similar devices are provided on a furniture pull-out.

Finally, the invention is directed to a piece of furniture such as a kitchen or living room piece of furniture with a body and a furniture pull-out, which is designed as mentioned above with a guide device according to the invention.

Character description

Fig. 1

ein schematisiert dargestelltes Möbel in perspektivischer Ansicht schräg von oben mit einer daran verschieblich aufgenommenen Schublade in ausgefahrener Stellung,

Fig. 2

einen perspektivischen Ausschnitt einer Führungsvorrichtung mit einer transparent dargestellten Auszugschiene, wobei eine Steueranordnung vorhanden ist,

Fig. 3

einen vergrößerten Ausschnitt aus Fig. 2 ohne Auszugschiene,

Fig. 4

einen weiteren perspektivischen Ausschnitt der Führungsvorrichtung ohne Auszugschiene und ohne Eingreifabschnitt der Steueranordnung und

Fig. 5

einen perspektivischen Ausschnitt der Auszugschiene gemäß Fig. 2 mit einem Eingreifabschnitt.

Further features and advantages of the invention are explained in more detail using the exemplary embodiments shown in the figures. In detail shows:

Fig. 1

a schematically shown piece of furniture in a perspective view diagonally from above with a drawer that can be moved on it in the extended position,

Fig. 2

a perspective detail of a guide device with a transparent pull-out rail, with a control arrangement being present,

Fig. 3

an enlarged section Fig. 2 without pull-out rail,

Fig. 4

a further perspective detail of the guide device without an extension rail and without an engagement section of the control arrangement and

Fig. 5

a perspective section of the pull-out rail Fig. 2 with an engagement section.

Figure 1 shows a highly schematic view of a furniture 1 according to the invention in a use state with a hollow cuboid body or furniture body 2 of the furniture and a furniture pull-out designed as a drawer 3, the drawer 3 being slidably accommodated on the furniture body 2 with two similar structural units or with two devices 15 according to the invention for guiding a furniture pull-out. The devices 15 are designed here, for example, as full extension rails 6-9. The furniture body 2 includes two opposite vertical side walls 4 and 5, between which the drawer 3 is located Guide system according to the invention with telescopic guide means or a first rail full extension 6 and a second rail full extension 7 from a state housed inside the furniture body 2 can be pulled out in the horizontal direction from the furniture body 2 according to P1 and pushed in in the opposite direction according to P2. In Fig. 1 the drawer 3 is shown in the maximum or completely moved state from the interior of the furniture body 2. This means that the storage volume of the drawer 3 can be accessed from above almost unhindered.

If the drawer 3 uses a partial rail extension instead of the full extension rails 6, 7, the drawer 3 cannot be moved as far out of the interior of the furniture body 2 in the direction of P1 when moved out to the maximum extent as with the full extension rails 6, 7 as shown in Fig. 1 is possible.

The full extension rail 6 screwed to the inside of the side wall 4 is at the same vertical height as the one screwed to the side wall 5 Figure 1 concealed rail full extension 7, which is indicated by dashed lines.

In the furniture body 2, above the drawer 3, a further drawer can be accommodated, which is guided accordingly via full extension rails 8 and 9 Figure 1 is not shown.

The drawer 3 has opposite drawer side walls 10, 11. In addition, the drawer 3 comprises a front element 12, a rear wall 13 opposite it in the horizontal direction and a horizontally extending drawer base 14, which reaches or is connected to the drawer side walls 10, 11, the front element 12 and the rear wall 13.

Fig. 2 shows schematically a front section of a possible or preferred embodiment of a device 15 according to the invention.

The device 15 is used to guide the furniture pull-out such as. B. the drawer 3 relative to a body 2, the device 15 having three rails, comprising a body rail 16 which can be fastened to the body 2, an extension rail 17 which can be attached to the furniture pull-out and a middle rail 18 acting between the body rail 16 and the pull-out rail 17, wherein the pull-out rail 17 and the middle rail 18 are displaceable relative to each other and relative to the body rail 16 in the first sliding direction P1 and in the second sliding direction P2, so that the device 15 lengthens or shortens telescopically during a sliding movement of the middle rail 18 and / or the pull-out rail 17 in a sliding direction P1, P2 relative to the body rail 16.

A control arrangement 19 is present for specifying the relative movement of the rails 16-18 to one another. The device 15 for guiding the furniture pull-out is also referred to below as the guiding device 15.

The control arrangement 19 is formed between the two adjacent rails 17 and 18. The control arrangement 19 has an engagement section 20 on the pull-out rail 17 and a coupling element 21 on the middle rail 18.

With the control arrangement 19 it is achieved that, depending on the position of the two rails 17 and 18 relative to one another, a coupled state of the engagement section 20 and the coupling element 21 exists. There is also a decoupled state of the engagement section 20 and the coupling element 21, in which the engagement section 20 is completely separated from the coupling element 21. In the coupled state of the engagement section 20 and the coupling element 21, the engagement section 20 and evacuably mounted contact sections 22, 23 of the coupling element 21 are pressed against one another, so that one of the rails 17, 18 takes the other rail along in the sliding direction during a displacement movement in a sliding direction. The contact sections 22, 23 are opposite each other and leave a channel-shaped area 24 free as a distance between them. This makes the engagement section 20, which is here, for example, in the shape of a peg, for example with a cylindrical outer shape, in the coupled state of the engagement section 20 and the coupling element 21, held clamped by the two contact sections 22, 23. The Figures 2 and 3 do not show a coupled state of engagement section 20 and coupling element 21, but rather a decoupled state of engagement section 20 and coupling element 21, with engagement section 20 being slightly removed from the clamped or coupled state. The contact sections 22, 23 are in a waiting position that is not acted upon by the engagement section 20. The distance between the avoidable contact sections 22, 23 at a constriction 28 of the area 24, i.e. between a section of the contact sections 22, 23 that protrudes from the other contact section, is slightly smaller than an external dimension or an external diameter of the cylindrical engagement section 20, which is exemplified here.

The two contact sections 22, 23 are here preferably designed to be resiliently deflectable in the same way, preferably both resiliently deflectable in a direction P3, P4 transverse to the direction P1 (see Fig. Fig. 3 ).

The coupling element 21 can alternatively also be z. B. have exactly one fixed contact section and only exactly one opposite, resiliently deflectable contact section.

Accordingly, in the coupled state of the engagement section 20 and coupling element 21, when the pull-out rail 17 is moved out of the pushed-together state of the rails 16-18 in the direction P1, i.e. if the furniture pull-out has previously been retracted on the furniture body 2 or is completely housed inside the furniture body 2, the Middle rail 18 taken along by the pull-out rail 17. The middle rail 18 detaches from the body rail 16 or moves relative to the body rail 16, with the guide device 15 extending telescopically. At the end of the pull-out movement of the furniture pull-out 3, when it is fully open on the furniture body 2 Fig. 1 is achieved, a storage volume of the furniture pull-out 3 that is open at the top is accessible to the user.

In the mechanically coupled state of the engagement section 20 and the coupling element 21, the contact sections 22, 23 of the coupling element 21 are prestressed with a predetermined preload force in the direction of the engagement section 20. The preload force acts against the direction P3 through the contact section 22 and against the direction P4 through the contact section 23 (see Fig. 3 ). The engagement section 20 is held clamped at the narrow point 28 between the contact sections 22, 23 in accordance with the coupled state.

If the middle rail 18, which is carried along by the pull-out rail 17 in the direction P1, is completely extended relative to the carcass rail 16, for example at a stop on the carcass rail 16, further pulling on the furniture carcass 3 in the direction P1, possibly supported by the inherent dynamics of the furniture pull-out 3 , the engagement section 20 moves relative to the coupling element 21 on the stationary middle rail 18 in the direction P1, so that the engagement section 20 pushes the clamping areas of the contact sections 22, 23 at the narrow point 28 outwards and thus a release force is provided which is counteracted by the engagement section 20 the prestressing force acts on the contact sections 22, 23 in the constriction, the contact sections 22, 23 deflect transversely to the direction P1 in the direction P3 and P4, which leads to a cancellation of the coupling state between the engagement section 20 and the coupling element 21. The two rails 17 and 18 are decoupled from each other and the pull-out rail 17 including the furniture pull-out 3 can be pulled out further in the direction P1 relative to the middle rail 18 up to the maximum extended position Fig. 1 .

Depending on the design of the contact sections 22, 23, the prestressing force with which the two contact sections 22, 23 are prestressed in the direction of the engagement section 20 can be predetermined.

The engagement section 20 is preferably associated with a separate component 25 with a plug 26 on which the engagement section 20 is designed to protrude. The plug 26 and a recess 27, which is present on the pull-out rail 17 in a preferably front top rail section in the longitudinal direction of the pull-out rail 17, are designed to match one another so that the component 25 can preferably be releasably attached to the pull-out rail 17 or z. B. can be attached later.

The contact sections 22, 23 of the coupling element 21 are resiliently deflectable on the coupling element 21. Both contact sections 22, 23 are each preferably designed as a narrow, elongated material area, such as a spring arm. Each material area is connected at both ends to a base body 21a of the coupling element 21 and is free from the base body 21a in between, preferably free on the underside or separated from the base body 21a or from the rest of the coupling element 21. Each contact section 22, 23 thus forms a spring bridge, which rebounds in the direction of P3 or P4 and back again. The coupling element 21 is preferably also designed as a separate component for detachable attachment to the rail in question or to a matching recess on the top of the middle rail 18.

In the direction P1, when the engagement section 20 approaches or retracts into the area 24 or the narrow point 28 in the longitudinal direction of the device 15 or the middle rail 18, other spring forces from the contact sections 22, 23 act on the engagement section 20 and thus also other clamping forces and thus also release forces for releasing the clamped engagement section 20 on the contact sections 22, 23 than when retracting the engagement section 20 in the direction P2 towards the narrow point 28.

This results in a direction-dependent evasion and force behavior of the contact sections 22 and 23. The different behavior of the control arrangement 19 when closing the furniture extension to reach the peak force and thus to release the Coupling state means that less force is required in one direction than in the other direction to overcome the coupling state. For this purpose, the contact sections 22, 23 each have two differently angled or dimensioned longitudinal sections. The longitudinal sections include, on the one hand, a longitudinal section 29 that is longer, flatter and angled from the narrow point 28 in the direction P1 and a shorter, steeper angled longitudinal section 30 from the narrow point 28 in the direction P2.

Starting from the telescopically collapsed device 15, for example in Fig. 3 When the pull-out rail 17 (not shown) is pulled out in the opening direction P1, the engagement section 20 present on the pull-out rail 17 comes into contact with opposite regions 22a and 23a of the contact sections 22 and 23, whereby these only deflect outwards to such an extent that the engagement section 20 is in the constriction 28 is held clamped between the contact sections 22 and 23, the pull-out rail 18 taking the middle rail 18 in the direction P1 via the control arrangement 19, i.e. by means of the clamped engagement section 20. If the middle rail 18 is completely or maximally shifted to the body rail 16, by z. B. abutting a stop on the carcass rail 16, the middle rail 18 is fixed in position relative to the carcass rail 16. When the pull-out rail 17 is pulled out further, due to external force exerted by a user by further pulling on the furniture pull-out in the direction P1, the force increases, which act from the engagement section 20 against the spring forces of the two contact sections 22, 23 at the narrow point 28 in a clamping manner on the outside on opposite sides of the engagement section 20. If the force from the engagement section 20 continues to increase and reaches a level corresponding to a release force, the two contact sections 22 and 23 move outwards together or simultaneously in the direction P3 and P4 (see Fig. Fig. 3 ).

The engagement section 20 slides in the area 24 past the bottleneck 28 in the direction P1, so that the pull-out rail is completely extended in the direction P1. The furniture pull-out becomes complete opened or extended on the body until e.g. B. what Fig. 1 shows that the furniture pull-out or the drawer 3 reaches its completely open end position on the furniture 1. The pull-out rail 17 rests against a stop on the middle rail 18, for example.

When closing the furniture pull-out in the direction P2, the engagement section 20 reaches opposite areas 22b and 23b of the contact sections 22 and 23 and comes into contact with them. In comparison to the areas 22a and 23a, other spring forces, for example smaller ones, act on the engagement section 20 due to the angularity or length of the areas 22b and 23b, so that the engagement section 20, for example, holds the two contact sections 22 and 23 more easily or with less force pushes away outwards in the direction of P3, P4 and comes through the bottleneck 28, so it is not held there or only for a short time. When retracting, the pull-out rail 17 moves past the middle rail 18, which remains extended, and only after reaching a retraction stop for the pull-out rail 17 that is present or acting on the middle rail 18 is the middle rail 18 taken along by the pull-out rail 17 until both rails 17 and 18 come together Move the body rail 16 and reach the completely retracted position on the furniture 1.

Reference symbol list

1

Furniture

2

Furniture body

3

Drawer

4

Side wall

4a

inside

5

Side wall

6

Full extension rails

7

Full extension rails

8th

Full extension rails

9

Full extension rails

10

Drawer side panel

11

Drawer side panel

12

Front element

13

Back wall

14

Drawer bottom

15

contraption

16

Body rail

17

pull-out rail

18

Middle rail

19

Tax arrangement

20

engagement section

21

coupling organ

21a

Basic body

22

Investment section

22a, 22b

Area

23

Investment section

23a, 23b

Area

24

Area

25

Component

26

Plug

27

recess

28

bottleneck

29

Longitudinal section

30

Longitudinal section

Claims (15)

1. Device (15) for guiding a pull-out furniture component (3) relative to a basic structure (2), wherein the device (15) has three rails, comprising a basic-structure rail (16) which can be fastened to the basic structure, a pull-out rail (17) which can be attached to the pull-out furniture component (3), and a central rail (18) acting between the basic-structure rail (16) and the pull-out rail (17), wherein the pull-out rail (17) and the central rail (18) are displaceable relative to each other and relative to the basic-structure rail (16) in a first sliding direction and in a second sliding direction such that the device (15) is telescopically extended or shortened during a sliding movement of the central rail (18) and/or of the pull-out rail (17) in a sliding direction relative to the basic-structure rail (16), wherein there is a control arrangement (19) for determining the relative movement of the rails (16-18) with respect to each other, wherein the control arrangement (19) is formed between two adjacent rails (16-18), wherein the control arrangement (19) has an engagement portion (20) on one rail and a coupling member (21) on the other rail in such a manner that, depending on the position of the two rails with respect to each other, a coupled state of the engagement portion (20) and of the coupling member (21) exists, and a decoupled state of the engagement portion (20) and of the coupling member (21) exists in which the engagement portion (20) is completely separated from the coupling member (21), and wherein, in a coupled state of the engagement portion (20) and coupling member (21), the engagement portion (20) and a deflectably mounted contact portion (22, 23) of the coupling member (21) are pressed against each other such that, during a displacement movement in a sliding direction, one rail carries along the other rail in the sliding direction, wherein a deflection force which acts on the contact portion (22, 23) and can be applied by contact of the engagement portion (20) against the contact portion (22, 23) in order to bring the contact portion (22, 23) from its waiting position into a clamping position, is side-dependent, as viewed in the longitudinal direction of the device (15), wherein depending on which side the engagement portion (20) approaches the contact portion (22, 23), a force of differing magnitude is necessary for reaching the clamping position of the contact portion (22, 23), wherein, in the case of two opposite contact portions (22, 23) which are present on the coupling member (21), the contact portions (22, 23) each have two differently angled or dimensioned longitudinal portions, characterized in that the longitudinal portions comprise firstly a more shallowly angled longitudinal portion (29), which is longer in the opening direction P1 from a narrow point (28), and secondly a more steeply angled longitudinal portion (30), which is shorter in the closing direction P2 from the narrow point (28), wherein the two longitudinal portions (29, 30) are connected to each other via the narrow point (28).
2. Device (15) for guiding a pull-out furniture component (3) relative to a basic structure (2), wherein the device (15) has three rails, comprising a basic-structure rail (16) which can be fastened to the basic structure, a pull-out rail (17) which can be attached to the pull-out furniture component (3), and a central rail (18) acting between the basic-structure rail (16) and the pull-out rail (17), wherein the pull-out rail (17) and the central rail (18) are displaceable relative to each other and relative to the basic-structure rail (16) in a first sliding direction and in a second sliding direction such that the device (15) is telescopically extended or shortened during a sliding movement of the central rail (18) and/or of the pull-out rail (17) in a sliding direction relative to the basic-structure rail (16), wherein there is a control arrangement (19) for determining the relative movement of the rails (16-18) with respect to each other, wherein the control arrangement (19) is formed between the basic-structure rail (16) and the central rail (18), wherein the control arrangement (19) has an engagement portion (20) on one rail and a coupling member (21) on the other rail in such a manner that, depending on the position of the two rails with respect to each other, a coupled state of the engagement portion (20) and of the coupling member (21) exists, and a decoupled state of the engagement portion (20) and of the coupling member (21) exists in which the engagement portion (20) is completely separated from the coupling member (21), and wherein, in a coupled state of the engagement portion (20) and coupling member (21), the engagement portion (20) and a deflectably mounted contact portion (22, 23) of the coupling member (21) are pressed against each other such that the central rail (18) is positionally fixed relative to the basic-structure rail (16), wherein a deflection force which acts on the contact portion (22, 23) and can be applied by contact of the engagement portion (20) against the contact portion (22, 23) in order to bring the contact portion (22, 23) from its waiting position into a clamping position, is side-dependent, as viewed in the longitudinal direction of the device (15), wherein depending on which side the engagement portion (20) approaches the contact portion (22, 23), a force of differing magnitude is necessary for reaching the clamping position of the contact portion (22, 23), characterized in that, in the case of two opposite contact portions (22, 23) which are present on the coupling member (21), the contact portions (22, 23) each have two differently angled or dimensioned longitudinal portions, wherein the longitudinal portions comprise firstly a more shallowly angled longitudinal portion (29), which is longer in the opening direction P1 from a narrow point (28), and secondly a more steeply angled longitudinal portion (30), which is shorter in the closing direction P2 from the narrow point (28), wherein the two longitudinal portions (29, 30) are connected to each other via the narrow point (28).
3. Device according to Claim 1 or according to Claim 2, characterized in that, in the mechanically coupled state of the engagement portion (20) and of the coupling member (21), the contact portion (22, 23) of the coupling member (21) is prestressed with a predetermined prestressing force in the direction of the engagement portion (20) such that, when a release force is achieved which acts on the contact portion (22, 23) from the engagement portion (20) counter to the prestressing force, the contact portion (22, 23) deflects and leads to removal of the coupling state between the engagement portion (20) and the coupling member (21), wherein the two rails when decoupled from each other are displaceable relative to each other.
4. Device according to Claim 1 or according to Claim 3, if dependent on Claim 1, characterized in that the control arrangement (19) is formed between the central rail (18) and the pull-out rail (17).
5. Device according to Claim 1 or according to Claim 3, if dependent on Claim 1, characterized in that the control arrangement (19) is formed between the basic-structure rail (16) and the central rail (18).
6. Device according to one of the preceding claims, characterized in that the contact portion (22, 23) of the coupling member (21) is present in a resiliently deflectable manner on the coupling member (21).
7. Device according to one of the preceding claims, characterized in that the contact portion (22, 23) of the coupling member (21) is resiliently deflectable in a direction transversely with respect to a longitudinal direction of the rails (16-18).
8. Device according to one of the preceding claims, characterized in that the engagement portion (20) belongs to a separate component (25) which is connected to a rail (16-18) by means of a plug-in connection.
9. Device according to one of the preceding claims, characterized in that the coupling member (21) belongs to a separate component which is connected to a rail (16-18) by means of a plug-in connection.
10. Device according to one of the preceding claims, characterized in that the coupling member (21) is configured in such a manner that an extent of the prestressing force, which acts on the engagement portion (20) when the engagement portion (20) and the coupling member (21) are mechanically coupled, is greater in a displacement direction of the rails (16-18), by which the device (15) is telescopically extended, than an extent of the prestressing force, which acts on the engagement portion (20) when the engagement portion (20) and the coupling member (21) are coupled, in a displacement direction of the rails (16-18), by which the device (15) is telescopically shortened.
11. Device according to one of the preceding claims, characterized in that the coupling member (21) is configured in such a manner that an extent of the prestressing force, which acts on the engagement portion (20) when the engagement portion (20) and the coupling member (21) are mechanically coupled, is smaller in a displacement direction of the rails (16-18), by which the device (15) is telescopically extended, than an extent of the prestressing force, which acts on the engagement portion (20) when the engagement portion (20) and the coupling member (21) are mechanically coupled, in a displacement direction of the rails (16-18), by which the device (15) is telescopically shortened.
12. Device according to one of the preceding claims, characterized in that the coupling member (21) has two separate and spaced-apart contact portions (22, 23) which both come into contact with the engagement portion (20) when the engagement portion (20) and the coupling member (21) are mechanically coupled.
13. Device according to one of the preceding claims, characterized in that the coupling member (21) has a pass-through region (24) of the coupling member (21), which predetermines a travel section which the engagement portion (20) covers during a relative movement of the engagement portion (20) and the coupling member (21).
14. Pull-out furniture component (3) having a device (15) according to one of the preceding claims.
15. Piece of furniture (1) having a basic structure (2) and a pull-out furniture component (3) according to Claim 14.

Images