The invention concerns a panel adjustment device according to the characterizing introductory clause of the independent claims.
AT 399 086 B shows an adjustment device for an adjustable drawer panel that operates when the panel is slanted around an amount diverging from the perpendicular by a lengthwise-adjustable railing. This type of angle adjustment is possible only if the drawer has railings.
The disadvantage of this design is the requirements of the railings as mentioned and that either a conical gap develops between the Zargen-slide and the panel or the screw-on angle is forced to bend.
Document DE 38 43 658 A1 shows a panel attachment, which the inclination of the panel is likewise adjusted, but, however, with a movable wedge. The conical gap formed there must be protected with a special cover to make it invisible and to protect it from dirt or other contamination. The bending of the screw-on angle can be intentional or can be generally prevented by loosening the fastening screws extensively.
Document AT 409 067 B shows a device, already closer to the invention, for the height and angle adjustment of the entire drawer with a front panel. The device is located between the drawer and drawer rail. Here, movable wedges are located in the front area of the drawer. They result in a height reconciliation, as well as an angle adjustment of the drawer's front panel. The means to provide the vertical adjustment to lift the drawer is provided in the rear area of the drawer, which likewise, also causes an angle adjustment of the drawer's front panel. How the wedges are moved on both sides is not shown here.
In order to correct the height of the drawer after the drawer's angle adjustment, complex shifting devices of the wedges must also be present. These complex shifting devices of the wedges must also be present if the panel's height, position is first set or adjusted, and afterwards, the reveal diagram is corrected by a drawer-panel-angle. A serious disadvantage is that the angle adjustment is located behind the drawer. To operate it, the drawer must be pulled out of the drawer. Until the panel is adjusted, it may be necessary for the user to push and pull the drawer in and out multiple times. So, the adjustment device is complicated and time-consuming to operate. Additionally, it is also relatively expensive to produce.
Document DE 44014 462 A1 shows the height adjustment of the drawer with the front panel, which device is located between the drawer and drawer rail. In the front drawer area the drawer with the panel can be raised or also (from the center position) lowered with a movable slide that is in the angled running slide slots. The disadvantage with this system is that a gap change (depth and angle) is caused by the vertical adjustment and this gap change cannot be balanced or adjusted anymore, which leads to the need for an additional adjustment device.
Besides, both devices named, have the disadvantage that a speed increase ratio of approximately 1.25 to 1.5 is present, so that a 1 mm height adjustment of the height adjustment device results in approximately 1.25 to 1.5 mm height adjustment of the drawer's front panel. The lever ratios shown here cause the following: for every degree of the drawer's angle change, the front panel changes approximately 0.25 mm, which is nevertheless substantial, with adjustable angles of +/−10 degrees of angle, which leads to a maximum deviation of 2.5 mm, which is in each case too much without some sort of compensation, in order not to become visibly apparent.
The task is, stemming from the above mentioned state of technology, is to develop an economical panel adjustment device, which makes a simple and quick adjustment of the angle inclination between the vertical level of the drawer's front panel and the vertical level of the cabinet's front side possible.
It is fundamental that the panel adjustment device works in such a manner directly or indirectly between the drawer and the drawer rail by means of a lifting and lowering element, so that a swiveling of the drawer (and with it, the panel) is made possible around a swiveling axis. So, the swiveling axis runs between the front panel and the lifting and lowering element, and the distance between the swiveling axis and the front panel is about a large or small as the distance between the swiveling axis and the lifting and lowering element.
It is preferred that the swiveling axis is as close to the front panel as possible and/or the lifting and lower element is as far away from the swiveling axis as possible.
The fundamental advantage here is that after the panel angle has been corrected, no reconciliation is necessary for the height. A further advantage is that an adjustment of the angle inclination is possible without a conical gap resulting between the décor side-wall fore-side and the panel and without a buckling and/or bending occurring at the side-wall fore-side, as happens partially with the current state of technology. Likewise, the simplest operation of the panel adjustment device is possible on the front drawer part without removing the drawer.
Therefore, a reconciliation or equalization of the panel's height, after the inclination angle has been adjusted, is no longer necessary since there is no increased speed ratio of the lifting and lowering element's height deflection of the front panel, as is the case with the current state of technology. Instead, a reduced speed ratio exists with the same deflection angle of the drawer and/or front panel's inclination angle. With the initial cited current state of technology, according to the figures, the increased speed ratio has a minimum 1.25; however, can naturally never be less than 1. The reduced speed ratio of the invention, due to the special arrangement among the fulcrum, the lifting and lowering element, and the panel is below 1 (for example, about 0.3). As a result the front panel changes about 0.05 mm per degree that the drawer angle changes (thus, only 20% of the value of the state of technology). By certain changes of the distance among the fulcrum, lifting and lowering element, and panel, this value can be guided even further to the direction zero. However, it is essential for the invention that a reduced speed ratio is less than (or the same as) 1, which is, preferably, kept as small as possible, but typically, lies below approximately 0.25. The reduced speed ratio of 0.25 means that for 1 degree of the drawer's angle change and the panel that is attached to it, a height adjustment of the lifting and lowering element is necessary (for example, 2 mm); and then the connected and unwanted height of the panel changes around 0.5 mm. If the increased speed ratio with the state of technology is greater than 1, a panel's height is noted as 2.5 mm, which must, in each case, be equalized or reciprocated by additional devices.
So, for a reduced speed ratio, according to the presented invention, it is necessary that the distance of the panel to the swiveling axis of the drawer and/or décor on the drawer rail is smaller and, at the very most, equal in size, which is possible only if the swiveling axis is located between the panel and the lifting and lowering element.
It is preferred that the swiveling axis lies on the drawer rail and that the lifting and lowering element, in particular, is located in the rear area of the drawer décor, especially on its lower part.
Here, it is preferred that the lifting and lowering device has a slider, which contains the lifting and lowering element, a connection element and an operating element for the lifting and lowering element. The lifting and lowering element is located in the rear area of the drawer, which is connected with an operating element (located in the front area of the drawer) for the lifting and lowering element by a connection element.
The advantage here is that by having the operating elements for the lifting and lowering element in the front area of the drawer, a simple and easily accessible operation of the lifting and lowering element in the rear area of the drawer becomes possible and, with it, the adjustment of the inclination angle of the drawer's front panel. The invention, thus, separates spatially the functions of the lifting and lowering element and so, the lifting and lowering of the drawer (i.e., the adjustment of the drawer's inclination) and with it, the connected panel.
In particular the operating element for the lifting and lowering element is located in the front area of the drawer itself or its décor component, and the lifting and lowering element is in the rear area on the drawer rail. The slider penetrates the drawer itself or its décor component on its way into the rear area of the drawer.
For this, it is preferred that the bearing surface of the drawer itself or its décor component and the drawer rail lies somewhat horizontal for the lifting and lowering element and its operating element and points upward, what is, however, not absolutely necessary since the vertical surfaces and the downward pointing horizontal surfaces can form, for this, a bearing, so that, however, in each case then additional holding or guiding devices are necessary.
In particular, the lifting and lowering element and its operating element are formed as a slider made of a flat material, which extends from the front into the rear slide rail area and from the front up over the center area on the one, especially the horizontal shank of the side-wall lower-part, is held movable, and in the rear area of the drawer rail, pushes away so that the end of the slider is formed as a wedge-shaped slider piece.
Preferably, the slider is bent at a right angle in its longitudinal extension a section before the lifting and lowering element and projects through a recess in the horizontal shank of the drawer's lower part to the support on the drawer rail.
The invention-related slider with the rear lifting and lowering element and front operating element for the lifting and lowering element can here have various forms. However, the lifting and lowering element is connected in one piece with the operating element and is made in one piece with the same material (for example, flat steel or wire or strip-formed plastic material).
The operating element and the lifting and lowering element of the panel adjustment device can, however, be designed/produced in another embodiment of the invention in two or more parts and are interconnected.
The operating element of the panel adjustment device has, in particular, teeth that engage by a tool (for example, a screwdriver) during the adjustment by an installer. The lengthwise shifting of the operating element along the rails causes a lifting or lowering of the lifting and lowering element. So the distance between the drawer/décor and the drawer rail changes and this modifies the inclination angle that securely connects the drawer's front panel in relation to the vertical front side of the cabinet. Inevitably, thereby, in small measure, the front panel's height changes in relation to the cabinet, which happens, however, only to an imperceptible extent.
The teeth are located favorably in the side wall of the operating element; whereby, naturally, an interlocked oblong recess (slotted hole) can be present in the operating element, into which the tool then engages. Any other equivalent mechanism should be protected by the invention. Naturally, the tool itself can be at least partially a part of the operating element and remains on the panel adjustment device, even if the adjustment procedure is terminated. So, for example, an extension of the external tool can be possible.
The entire slider or only parts of it can be guided in the slide tabs on the drawer rail and/or the drawer and/or its décor profile; the guide tabs form a horizontal and, if necessary, also a vertical slide, which still also makes a movement possible in the longitudinal axis of the rails possible, but however, not crosswise to it.
To retain the once adjusted relative position between the drawer/décor and the drawer rail, the panel adjustment device is equipped with a catch device, especially in the form of a self-restraining corrugation, which prevents an unintentional shifting of the panel adjustment device. For this corrugation, especially between the slider and the drawer and/or its décor, is provided and is located, in particular, on the drawer and/or its décor, especially in the area of the lifting and lowering element's operating element. Additionally, homogeneous corrugation can also be present as counter-teeth on the slider. The corrugation is thereby crosswise and/or slanted to the shifting direction of the slider. Corresponding stop restrictions are placed on the drawer/décor and/or on the drawer rail so that the slider of the panel adjustment device cannot be pulled out of its function position when it is moved in the longitudinal direction of the rails.
The invention at hand is more closely described in the following exemplary designs, from which further characteristics, features, advantages and applications are made known.
The front panel (3) not shown here is, by the way, fastened directly or indirectly to the décor-front-wall (6b). By turning the screwdriver (16), that was brought before from below in an engagement with the teeth (19) on a side edge of the operating element (14). Now the entire slider (15), together with the lifting and lowering element (11) lying opposite the operating element (14), is shifted in the longitudinal axis of the drawer rail (10). Depending upon the direction of rotation the slider (15), and with it the lifting and lowering element (11), then shifts towards or away from the front panel (3) so that the distance between the drawer rail (10) and décor (6) and/or the décor's (6) side-wall-lower-component (6c) decreases or increases, so that primarily the inclination angle (8) changes between the levels of the front panel (3) and the cabinet's (1 ) front side (1a).
In
At the edge of the drawer rail (10) is the virtual swiveling axis (24), around which the décor (6) with the front (3) swings in the swiveling directions (29), if the tool (16) is turned and the slider (15) moves left or right in
Then, resulting from the arrangement of the swiveling axis (24) to the lifting and lowering element (11) and to the panel (3), which with the current state of technology the amount (27) of the lifting and/or lowering of the panel (3) is larger than the amount of the lifting and/or lowering of the lifting and lowering element (11) with an increased speed ratio, is great than 1 depending on the lever ratios in the figures, 1.25 and or 1.5. Hereby, the lifting and lowering element (11) always lies a piece closer to the swiveling axis (24) than the panel (3) so that the deflection of the lifting and lowering elements (11) always entails a positive strengthening (speed increase) of the deflection of the panel (3) as a result.
With the presented invention, however, the arrangement for the state of technology is completely different, because the lifting and lowering element (11) are farther away to the swiveling axis (24) than the panel (3) so that the deflection of the lifting and lowering element (11) always entails a negative reinforcement (reduction) of the deflection of the panel (3).
This is, however, only possible if the swiveling axis (24) is located between the panel (3) and the lifting and lowering element (11). The closer the swiveling axis (24) is to the panel (3) and the father away the swiveling axis (24) is from the lifting and lowering element (11), the less the unwanted deflection of the panel (3) occurs in the height with the same change of the inclination angle (9) between the level of the panel (3) and the level of the front side (1a) of the cabinet (1).
So it is ideal for the swiveling axis (24) to be in the area of the panel (3) and/or a lifting and lowering element (11) in the area of the end of the déor (6). In the example shown here the swiveling axis (24) sits on the front edge of the drawer rail (10) and the lifting and lowering element (11) in the rear area of the décor (6); however, not maximally in the back so that a reduction degree of approximately 0.3 results. The 3 mm height deflection (24) of the lifting and lowering element (11), thus, results in approximately 1 mm height deflection (27) of the panel (3′); whereby, with the state of technology about 4 mm height deflection (27) at the panel (3′) would adjust itself—thus, 4 times so much.
Therefore, with the present invention, the unwanted height deflection (27) plays no important role and can be ignored when the inclination adjustment of the front panel (3) is made. Thereby a simple, easy and quick inclination adjustment of the angles (9) of the panel (3) is possible with only a panel adjustment device (7), which leads to reduced production, assembly and installation costs.
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102 54 772 | Nov 2002 | DE | national |
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