The present invention relates to a pull-out guide for the guidance of a drawer, and to a drawer or a furniture item having such a pull-out guide.
Pull-out guides for the guidance of a drawer have already become known in various embodiments, in the form of a full extension pull-out guide that includes a cabinet rail, a middle rail and a drawer rail, as well as in the form of a partial or single extension pull-out guide that includes only a cabinet rail and a drawer rail. One application relates to, for example, under-drawer guides, in which the pull-out guides are placed beneath a drawer bottom of a drawer made, for instance, of wood. It is difficult to install partial extension pull-out guides, which include only a cabinet rail and a drawer rail, on a piece of furniture when the front end of the cabinet rail is fixed inside the face frame of the furniture and the rear of the cabinet rail is fixed to the inside rear wall of the furniture cabinent, because it is difficult to ensure that the two runners are installed precisely parallel to one another. If the two runners are not parallel, the drawer will not open and close smoothly. In addition, misalignment of the drawer sometimes occurs when attempting to fasten the drawer rail to the bottom of the drawer, because the bottom of the drawer blocks the view of the installer.
An object of the present invention is to provide an improved pull-out guide, in particular, with a view to a fitting of the pull-out guide on the furniture item and/or of the drawer on the pull-out guide.
The present invention is based on a pull-out guide for the guidance of a drawer, comprising a cabinet rail for attachment to a furniture cabinet and a drawer rail for attachment to a drawer, wherein a roller unit, the rollers of which roll on a guide surface of the respective rail during a relative movement of the rails one to another, is provided. The cabinet rail comprises a low-profile side element, which in the fitting position is vertically oriented, and the drawer rail possesses a support surface for the fitting of a drawer on the pull-out guide.
The pull-out guide can have, in addition to the cabinet rail and the drawer rail, also a middle rail. Correspondingly, the roller unit is configured either between the cabinet rail and the middle rail and/or between the middle rail and the drawer rail.
The pull-out guide comprises, for instance, an automatic retraction mechanism for a damped closure of the drawer, which retraction mechanism is arranged, in particular, on the cabinet rail.
One aspect of the present invention lies in the fact that the low-profile side element of the cabinet rail does not extend above the upper support surface of the drawer rail over at least 75% of the total length of the cabinet rail. A vertically upwardly protruding flag-like element is provided on the low-profile side element of the cabinet rail, and the protruding element extends upwardly in the vertical direction from a region of the cabinet rail that defines a rearward one-third portion of the overall length of the cabinet rail.
In one embodiment, the protruding element extends above the support surface of the drawer rail in instances where the side wall of the drawer rail does not extend below any portion of the drawer rail itself. In instances where the side wall of the drawer extends below the upper support surface of the drawer rail, the protruding element would still extend upwardly from the drawer rail, but to a lesser extent.
Preferably the protruding element and the cabinet rail are formed as one integral piece so that a material and cost saving in the manufacture of the pull-out guide is obtained.
The protruding element is provided to guide the drawer, in the fitting process, to its final fitting position on the drawer rail. Fitting of the drawer on the drawer rail is thereby facilitated.
Viewed in the longitudinal direction of the drawer rail, the protruding element is, for instance, between 1 and 30 mm long, advantageously between 1 and 20 mm or between 1 and 10 mm. The protruding element is, for example, in its vertical extent, for example starting from a top edge of the low-profile side element, between 1 and 20 mm tall, advantageously between 1 and 15 mm or between 1 and 10 mm.
The protruding element has a thickness, for instance, perpendicular to the low-profile side element, between 0.5 and 30 mm, advantageously between 0.5 and 20 mm, 0.5 and 10 mm, 0.5 and 5 mm or 0.5 and 2 mm. In particular, the protruding element and the low-profile side element have the same thickness.
Advantageously, the low-profile side element is oriented substantially perpendicular to, in particular, a plane support element of the cabinet rail, so that, in the fitted state, the low-profile side element protrudes vertically upward and the support element runs horizontally.
Preferably, the support surface of the drawer rail is of plane configuration and is arranged horizontally or parallel to the support element of the cabinet rail. In one embodiment, the sides of the drawer act as the corresponding member.
For example, the drawer comprises a suitably corresponding member to the protruding element, which member is arranged, in particular, on a drawer side, so that the drawer, in a first fitting step, can be mounted onto the drawer rail and, in a further fitting step, guided by the protruding element in the direction of the rear wall of the furniture cabinet, can be slid and/or fitted onto the drawer rail.
Advantageously, the protruding element is arranged in the rear region of the cabinet rail. In particular, the protruding element is arranged on the cabinet rail between the frontal region of the cabinet rail and a fastening element which is provided to fasten the cabinet rail to the rear wall of the furniture cabinet.
In a basic variant of the pull-out guide, the protruding element further comprises a guide member, which is bent outward from the drawer rail, i.e., away from the drawer rail, in such a way that, in the direction of the longitudinal extent of the drawer rail, the guide member has from its bent-away end a diminishing distance to the remaining side element.
Advantageously, the guide member is bent outward in such a way that in the direction of the longitudinal extent of the drawer rail, starting from the frontal end of the drawer rail, the guide member has from its bent-away end a diminishing distance to the remaining side element of the cabinet rail.
Moreover, the guide member is bent away outward on the side element about an axis which is configured substantially perpendicular to the support surface of the drawer rail.
It is preferred that the protruding element and the guide member are configured in one piece.
Furthermore, it is preferred that the guide member comprises a guide surface and the guide surface is configured in such a way, during fitting of the drawer, to lead the drawer into a fitted position on the drawer rail.
The guide member of the protruding element serves to additionally simplify fitting of the drawer and to guide the drawer, during fitting on the drawer rail, in the direction of the final fitting position, in that the drawer, with a drawer rear wall or the drawer side wall, is guided, in particular, along a guide surface of the guide member during fitting of the drawer into the final fitting position and, to this end, slides or glides along the guide surface.
For example, the guide surface is designed substantially parallel to the low-profile side element of the cabinet rail and substantially perpendicular to the support surface of the drawer rail.
Advantageously, the guide member, for instance the guide surface, is of curved configuration, in particular, the guide member, from a view from above onto the pull-out guide, advantageously has a bend, in particular, a radius, perpendicular to the support surface of the drawer rail.
The guide surface can also be of helical design. For instance, the lower region of the bent-away end of the guide member, in the direction of the longitudinal extent of the drawer rail, is configured closer to the frontal end of the drawer rail than the upper region of the bent-away end of the guide member. The guide member thereby has the shape of a wave.
Furthermore, the cabinet rail can comprise on the low-profile side element a recess, wherein the size of the recess corresponds to a size of the protruding element.
The position of the recess and of the protruding element on the side element of the cabinet rail can be arranged such that, in a punching process, two cabinet rails can be punched side by side out of a single piece of sheet metal in a material-saving and cost-saving manner, with comparatively low or no material waste.
Preferably, the size of the recess corresponds to the size of the protruding element and the size of the guide member, in particular, when the protruding element and the guide member are configured in one piece.
It is also of advantage that the cabinet rail comprises on the low-profile side element a first fastening member, wherein the cabinet rail comprises on a support element running at a right angle to the low-profie side element a second fastening member, and wherein the cabinet rail can be fitted by means of the fastening members frontally in a plane of the furniture cabinet.
Advantageously, the fastening members are designed as through holes. The cabinet rail can hence be fixed to the furniture cabinet by means of screws at the through holes.
Preferably, the fastening members are configured on a frontal region of the cabinet rail. The cabinet rail can hereby be fixed, for instance, by the first fastening member to a vertically running support, and by the second fastening member to a running strut, running horizontally thereto, in the frontal region of the furniture cabinet.
Hence a comparatively simple, stable and cost-effective fitting of the pull-out guide in the frontal region on the furniture cabinet is possible.
The cabinet rail can also have on an underside facing away from the drawer rail a fastening point, wherein the fastening point is provided to arrange the cabinet rail on the furniture cabinet, wherein the fastening point comprises a mounting member, and wherein the cabinet rail is positionable by the mounting member on a frontal, horizontally running strut of the furniture cabinet.
Advantageously, the fastening point comprises two mounting members.
As a result, the cabinet rail can be fixed and/or clipped and/or plugged onto and/or oriented comparatively easily, by means of the fastening point, to a frontally horizontally running strut of the furniture cabinet.
For example, the mounting member is punched and/or cut out of the cabinet rail as a bent-out tongue and a bent-over element, or is bent out and/or edged on the cabinet rail.
Moreover it is important that on the rear region of the drawer rail is arranged a reinforcing member for the reinforcement of the drawer rail, which reinforcing member encloses the drawer rail at least at the top and side.
In the fitted state on the drawer rail, the, for instance, clamp-like reinforcing member encloses the drawer rail at least at the top and side in such a way that a weight of a drawer fitted on the drawer rail, in particular, with content, can be substantially increased, compared to a drawer rail without a reinforcing member fitted thereon.
The reinforcing member can be plugged and/or clamped and/or clipped onto the drawer rail.
Advantageously, the reinforcing member is formed of a metal, in particular, steel, or a stable plastic or a combination of materials.
As a result of the reinforcing member, a drawer rail of a pull-out guide, consisting only of a cabinet rail and a drawer rail, is reinforced such that an extension length of the drawer rail can be lengthened to match that of a three-piece pull-out guide.
Moreover, it is of advantage that the reinforcing member can be fitted without tools to, for example, snapped onto, the drawer rail by a latching member. For instance, the latching member is punched and/or bent out of the support surface of the drawer rail.
Advantageously, the drawer rail comprises a latching member, which is configured in the rear end region of the drawer rail on the support surface and which is designed to receive the reinforcing member for the reinforcement of the drawer rail.
As a result of the latching member, the reinforcing member can be fitted on the drawer rail in a comparatively simple, fast and cost-effective manner.
Moreover, it is significant that the roller unit has cylindrical rollers, which on opposite flat end faces comprise toroidally arched bearing surfaces of a bearing element which otherwise protrudes from the rest of the end face. This allows for a simple fitting of the rollers to the roller unit.
In an advantageous variant of the present invention, the roller unit is configured such that it functions as a middle rail. As a result of a lengthened design of the roller unit, it is possible to advantageously lengthen the extension distance of the drawer rail. To this end, in an extreme extension position of the drawer rail, a portion of the roller unit extends over an end of the cabinet rail in the direction of extension.
As a result of the lengthened design of the roller unit, in particular, all rollers of the roller unit support the weight of the drawer over the extension length on the drawer rail. While the remaining extension length extends over a portion of the roller unit on which rollers are arranged, one end of the cabinet rail, these cannot in this state support a weight of the drawer on the cabinet rail.
In a further embodiment of the present invention, the cabinet rail comprises a braking member for the roller unit. The braking member forms a friction stop, against which a counterpart of the roller unit, in the extended state of the drawer rail, abuts in such a way that the roller unit, when the drawer rail or the drawer fitted to the drawer rail is pulled out on the cabinet rail, remains on the latter. The contacting of the braking member with the roller unit happens, in particular, gradually, preferably without an abrupt abutment, but with increasing braking force.
The braking member can form a pure stop for the counterpart of the roller unit, so that the roller unit, when the drawer rail or the drawer fitted to the drawer rail is pulled out on the cabinet rail, remains on the latter.
The roller unit is, in particular, a cage roller unit.
Advantageously, the roller unit is designed lengthened such that the weight of a drawer fitted onto the drawer rail is distributed amongst at least 10 bearing rollers of the roller unit.
For instance, the roller unit comprises more than 10 rollers, advantageously between 11 and 20 rollers, for instance 11, 12, 13, 14, 16, 17, 18, 19, 20, for example, between 10 and 15 rollers, in particular, 15 rollers, which support the weight of the drawer and/or of the drawer rail. The weight capacity of a drawer can hereby advantageously be increased. The weight capacity of the drawer, in particular, with content, which acts on the rollers is hence also distributed among a plurality of rollers.
If the pull-out guide comprises, in addition to a cabinet rail and a drawer rail, also a middle rail, in which embodiment the roller unit is provided between the middle rail and the drawer rail and/or the cabinet rail and the middle rail, the advantageous design of the roller unit enables a lengthening of the extension length of the drawer and/or an increase in that weight of the drawer which is to be borne by the pull-out guide.
It is also of advantage that the drawer rail comprises a suspension element and the suspension element is punched out and bent out on the drawer rail.
For instance, the suspension element is in a first production step punched or cut or lasered out of the drawer rail, and in a second production step bent and/or pressed into its working shape.
The suspension element is designed such that the drawer is coupled with the drawer rail via the suspension element, or the drawer is fastened to the drawer rail by the suspension element. For instance, the drawer comprises on its rear region an opening, in which, in the fitted state, the suspension element engages.
In particular, the suspension element can prevent the drawer from being lifted off the pull-out guide in the opened state.
In addition, it is proposed that the suspension element has a bead.
Advantageously, the suspension element has for instance, in a middle region, a rib-shaped element, for instance a bead. The rib-shaped element is formed on the suspension element, for example, by a punching process. The rib-shaped element improves the stability of the suspension element.
It also proves advantageous that on the suspension element is arranged a damping element.
The damping element arranged on the suspension element serves, for instance, to damp or to wholly eliminate a noise which arises during the closing operation of the drawer and which can be generated when the rear wall of the drawer bumps against the suspension element.
In another embodiment of the present invention, in which the low-profile side element of the cabinet rail does not extends above the support surface of the drawer rail over at least a dominant longitudinal extent, wherein on the low-profile side element is configured a vertically upwardly protruding flag-like element, wherein the protruding element juts over the support surface of the drawer rail upwardly in the vertical direction, wherein the protruding element comprises a guide member, which is bent outward away from the drawer rail in such a way that, in the direction of the longitudinal extent of the drawer rail, the guide member has from its bent-away end a diminishing distance to the remaining side element, it is preferred that in this modification the protruding element can be plugged onto the low-profile side element.
For instance, the protruding element is configured as a tab, which is clipped and/or plugged and/or clamped onto the low-profile side element.
The protruding element can hence be formed comparatively cost-effectively by plastic injection molding. The protruding element can be formed of metal, plastic or a combination of materials.
Several illustrative embodiments are explained more closely below, with mention of further advantages and details, on the basis of schematic drawings, wherein:
In
The drawer rail 3 of the single extension pull-out guide 1 has an upper support surface 3′ on which a drawer 52 consisting of at least a drawer bottom 50 and a drawer front 51 (
On the cabinet rail 2 is configured at the frontal end 4 a protrusion 17a bent out from the material of the cabinet rail 2, which slows down the roller unit 16 (
Moreover, at the rear end 12 on the drawer rail 3 is configured a suspension element in the form of a hook 10, as well as, at the frontal end 28 of the drawer rail 3, a latching block 11 for latch-locking to a drawer 52 (see, in this regard,
Furthermore, on the cabinet rail 2 is fitted an automatic retraction mechanism 14 to enable a damped retraction of the drawer rail 3 into the fully retracted state on the furniture cabinet 42.
On the low-profile side element 18 of the cabinet rail 2, a flag-like protruding element 19 integrally connected to the cabinet rail 2 is additionally present, protruding in the upward direction. A recess 55, corresponding to the flag-like protruding element 19, is shown in a front region of the side element 18 of the cabinet rail 2.
As shown in
In
As shown in
In
In
In
In
The flag-like element 19a in this embodiment extends vertically upwardly above the upper support surface 3′ of the drawer rail 3, because the pull-out guide depicted in
The flag-like element 19a is configured in such a way on the cabinet rail 2 that it comprises a boss 53, which protrudes forward in the fitted state in the direction of the furniture front, and which, for the easier fitting of a drawer 52, is bent outward away from the drawer rail 3 at an acute angle (
The rollers 30a to 30i are mounted in a projecting supporting portion 32 of the roller unit 16, which extends in a cantilever-like manner beyond that part of the cabinet rail 2 which is embraced by the carriage 29 of the roller unit 16. Depending on the length of the single extension pull-out guide 1, 26, 43, 46, the complete length of the roller unit 16, inclusive of the projecting supporting portion 32 with its rollers 30a to 30i, can be used to support the drawer rail 3 arranged thereon, when the rollers 30j to 30o roll on the upper guide surface 31. The roller unit 16 thus has the function of a middle rail having, in the present case, 15 rollers with comparatively large supporting length. As such, the cost of a separate middle rail can be eliminated.
If the drawer rail 3 is fully extended with a corresponding displacement of the roller unit 16 onto the frontal end 4 of the cabinet rail 2, the maximum extension position is then ended when a stop surface 29′ of the carriage 29 of the roller unit 16 at the end of the cabinet rail 2 abuts the stop member 17b (see
Just before the stop surface 29′ abuts the stop member 17b, however, a resilient portion 29″ (see
Moreover, the projecting protective portion 32, in the region which overhangs in a cantilever-like manner, in the fully extended state according to
As a result of this measure, a drawer rail 3 with drawer 52 arranged thereon is not only able to be extended further, but it is also possible, given at least the same extension pull-out guide length, to fit the single extension pull-out guide 1, 26, 43, 46, 49 on the drawer 52 in somewhat set back arrangement, so that a drawer front 51 or an appropriately encompassing frame does not need to be unlatched.
In
A further fastening variant of a single extension pull-out guide 1 is shown in
In
By forming the cabinet rail 2 with only a single mounting member 44 at the front end thereof, a substantial cost-savings is realized, because two cabinet rails can be stamped out of a single piece of sheet metal having a size that was normally required to stamp out a single cabinet rail. The presence of the low-profile side element 18 accounts for at least 75% of the total length of the cabinet rail. The absence of metal of any appreciable height along the length of the cabinet rail 2 necessitated the addition of protruding element 19 to guide the side wall of the drawer 52 to ensure that, when the drawer 52 is assembled to the drawer rail 3, the holes (not shown) in the rear wall of the drawer 52 align with the hooks 10 on each drawer rail 3.
The forward mounting member 44 extends vertically upwardly to an extent higher than that of the protruding element 19, and extends longitudinally less than 25% of the total length of the cabinet rail 2.
The mounting member 40 also includes an elongated recess 72, which extends into the mounting member 40 over the majority of the width of the mounting member 40, for receiving the tip end of the flange member 60. When the tip end of the flange member 60 is inserted into recess 72, a flexible latch mechanism 73 bends down and then up again, and retention member 74 locks in slot 61 of flange member 60 to lock the cabinet rail 2 in the mounting member 40. If necessary, flange member 60 can be unlocked from mounting member 40 by pushing down on retention member 74 and sliding the cabinet rail back away from elongated recess 72.
The width of flange member 60 is less than the width of elongated recess 42, and the width of retention member 44 is less than the width of slot 61. This arrangement allows for the rear end of cabinet rail 2 to move laterally and essentially self-adjust its position relative to the other cabinet rail as the drawer is being installed on the drawer rails, as well as during subsequent open/close cycles. This self-adjustment feature is very advantageous to make up for tolerances in the cabinet and drawer dimensions, as well as the accuracy by which the mounting members 40 are fixed to rear wall 41.
In the embodiment shown in
In addition, in some instances the rigidity of the rear wall 41 of the furniture cabinet is sufficient that the slot 61 can be omitted from chair rail 2, and the flexible latch mechanism 73 and retention member 74 can also be omitted from the mounting member 40. Simply by fastening the cabinet rail 2 to the front end of the furniture cabinet is sufficient to prevent the cabinet rail 2 from becoming dislodged from the elongated recess 72 in the mounting member 40.
Although not shown in the drawings, the rear portion of the drawer rail 3 includes a stop member that prevents the drawer rail 3 from extending beyond the carriage of the second roller unit 81. Similarly, and also not shown in the drawings, the rear portion of the middle rail 80 also includes a stop member that prevents the middle rail 80 from extending beyond the carriage of the first roller unit 16.
As shown in
As shown in
There is also a stop surface 87 on the carriage of the second roller unit 81 that engages the stop member 85, and a stop surface 88 on the carriage of first roller unit 16 that engages stop member 86.
This application claims the benefit of U.S. Application Ser. No. 62/268,653 filed Dec. 17, 2015, and is a continuation application of U.S. application Ser. No. 15/244,449, filed Aug. 23, 2016, the entireties of which are incorporated herein by reference.
Number | Date | Country | |
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62268653 | Dec 2015 | US |
Number | Date | Country | |
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Parent | 15244449 | Aug 2016 | US |
Child | 15379877 | US |