Patent Application
20240156258
The present invention relates to a furniture fitting configured to be mounted to at least one furniture part. The furniture fitting includes at least one base body, and at least one actuating member movable relative to the base body. The at least one base body includes at least one fastening portion having a fastening side configured to at least partially bear against the at least one furniture part when the furniture fitting is mounted to the furniture part, and the at least one fastening portion includes at least one, preferably circular, opening for the passage of a fastener, preferably of a screw.
EP 2 429 340 B1 discloses a furniture fitting in the form of a drawer pull-out guide, in which a base body in the form of a carcass rail is to be mounted to a furniture carcass. The actuating member is formed by a drawer rail (not shown), the drawer rail being displaceably supported relative to the stationary carcass rail. The base body in the form of the carcass rail includes a fastening portion having circular openings for the passage of screws so as to screw the carcass rail to the furniture carcass.
A general problem is the requirement for metal which is necessary for the production of a furniture fitting. A high material usage leads to a high weight and to increased costs in serial production. Therefore, it is desirable to employ metal as few as possible, particularly because a resource-saving use of raw materials creates both ecological and economic benefits.
A measure for saving metal is the usage of thin-walled metal sheets, and the weight of the furniture fitting can also be reduced thereby in an advantageous manner. However, with the employment of thin-walled metal sheets, it may occur that the peripheral edge of the opening for the passage of the fastener, in particular of a screw, can be damaged when the furniture fitting is mounted to the furniture part. The danger of a damage of the opening is additionally increased when using a cordless screwdriver rotating with a high torque. Once the peripheral edge of the opening is damaged or unduly deformed, a screw head does no longer find a hold. The furniture fitting can then only be mounted to the furniture part with an additional installation effort, or cannot be mounted at all.
With the employment of thin-walled metal sheets, there is also the problem that there is no space available so as to countersink the screw head. In such a case, the screw head projects over the opening. Besides an unpleasant configuration, there is also the danger of injuries of persons and collisions with objects.
It is an object of the present invention to propose a furniture fitting of the type mentioned in the introductory part, thereby avoiding the above-discussed drawbacks.
According to the invention, the at least one opening, on a second side spaced apart from the fastening side by a material thickness of the fastening portion, is surrounded by a bulge projecting transversely from the second side of the fastening portion.
In other words, on a side of the fastening portion facing towards a screw head, the opening is surrounded by a, preferably annular, bulge which is provided for at least partially receiving the screw head. Accordingly, the screw head can be at least partially, preferably substantially entirely, countersunk within the bulge.
By virtue of the bulge, the peripheral edge of the opening can be reinforced, that is to say that the force emerging from the underside of the screw head can be distributed over a larger area. Due to the bulge, the screw head will sink less into the thin-walled metal of the fastening portion. Therefore, the danger of a damage of the peripheral edge of the opening can thereby be reduced.
When the bulge is produced, for example, in the form of an embossment, a corresponding recess is created on the fastening side of the fastening portion, and the chip material arising from the furniture part can be at least partially received within the recess. Thereby, the danger can also be reduced that the chip material penetrates between the fastening side of the fastening portion and the furniture part, without leading to an undesired spacing of the fastening portion relative to the furniture part.
Further details and advantages of the present invention result from the following description of figures, in which:
In the shown embodiment, the furniture fittings 4 in the form of the drawer pull-out guides 4a include a base body 9 in the form of a carcass rail 9a, the carcass rail 9a being configured to be fixed to the furniture carcass 2a via a fastening portion 11.
Further, the furniture fitting 4 includes at least one actuating member 10 movable relative to the base body 9. For example, the actuating member 10 is in the form of a movable drawer rail 10a. The drawer rail 10a is configured to be connected to the drawer 3 and is displaceably supported relative to the stationary carcass rail 9a.
If appropriate, the drawer pull-out guide 4a can also include a central rail, the central rail being displaceable between the carcass rail 9a and the drawer rail 10a, thereby allowing the drawer 3 to be fully extended relative to the furniture carcass 2a.
Each of the drawer sidewalls 7 can include a hollow-chamber profile 7a which is connected or which is configured to be connected to the at least one drawer rail 10a of the drawer pull-out guide 4a.
The fastening portion 11 includes a fastening side 19 configured to at least partially bear against the furniture part 2 when the furniture fitting 4 is mounted to the furniture part 2.
The fastening portion 11 includes at least one, preferably circular, opening 12 for the passage of a fastener, in particular of a screw, for mounting the fastening portion 11 to the furniture carcass 2a.
On a second side 20 facing away from the fastening side 19, the at least one opening 12 is surrounded by a, preferably annular, bulge 21 projecting transversely from the second side of the fastening portion 11.
By virtue of the bulge 21, the screw head of a screw can be at least partially countersunk. Moreover, the peripheral edge of the opening 12 can be reinforced by the bulge 21, and the danger of a damage of the peripheral edge of the opening 12 can be reduced.
Each of the fastening portion 11, the carcass rail 9a and the drawer rail 10a can include at least one reinforcement bead 13. At least one opening 12 for the passage of a screw can be arranged between two reinforcement beads 13. As a result, the resistance moment in this area can be increased.
The fastening portion 11 of the carcass rail 9a has a fastening side 19 configured to at least partially bear against the furniture carcass 2a when the carcass rail 9a is mounted to the furniture carcass 2a.
The carcass rail 9a and/or the drawer rail 10a is or are bent to a profile 9b, 10b from a flat metal sheet having two longitudinal edges 14a, 14b (drawer rail 10a) and 15a, 15b (carcass rail 9a). The flat metal sheet has a material thickness (X).
The flat metal sheet, from which the profile 9b, 10b is formed, can have a material thickness (X) of between 0.5 mm and 1.0 mm, preferably a material thickness (X) of 0.7 mm for example.
The profile 9b of the carcass rail 9a and/or the profile 10b of the drawer rail 10a includes or include at least one foldover 16, 17 having at least a doubled material thickness (2X) on at least one longitudinal edge 14a, 14b, 15a, 15b, preferably on both longitudinal edges 14a, 14b, 15a, 15b. Preferably, the at least one foldover 16, 17 has precisely a doubled material thickness (2X).
If appropriate, the foldover 16, 17 can also be folded three times or multiple times so as to obtain a triple material thickness (X) or a multiple material thickness (X).
At least one foldover 16, 17 can be arranged on a longitudinal edge 15b of the carcass rail 9a, and this foldover 16, 17 is configured to bear against the furniture carcass 2a when the carcass rail 9a is mounted.
According to an embodiment, the at least one foldover 16, 17, on the at least one longitudinal edge 14a, 14b, 15a, 15b, includes at least two metal sheet portions bearing at least partially against each other.
The at least one drawer rail 10a can include, on both longitudinal edges 14a, 14b, at least one foldover 16, 17 having at least a doubled material thickness (2X). The two foldovers 16, 17 are aligned transversely, preferably substantially perpendicular, relative to each other, and/or one of the two foldovers 16, 17 faces towards the inside and the other of the two foldovers 16, 17 faces towards the outside.
At least one foldover 16, 17, on the at least one longitudinal edge 14a, 14b, 15a, 15b and in a cross-section extending perpendicular to the longitudinal direction (L), includes at least one kink 18 extending in the longitudinal direction (L). Preferably, the at least one foldover 16, 17 is formed on the at least one longitudinal edge 15a of the carcass rail 9a.
The carcass rail 9a includes at least one fastening portion 11 having a fastening side 19 configured to bear against the furniture carcass 2a.
The at least one fastening portion 11 can include at least one, preferably circular, opening 12 for the passage of a fastener, preferably of a screw.
The at least one opening 12, on a second side 20 spaced apart from the fastening side 19 by a material thickness (X) of the fastening portion 11, is surrounded by a bulge 21, the bulge 21 projecting transversely from the second side 20 of the fastening portion 11.
By virtue of the bulge 21 surrounding the opening 12, the stiffness of the fastening portion 11 can be significantly increased in a region of the opening 12. This is, in particular, advantageous when metal sheets with thinner material thicknesses (X) are employed.
At least one reinforcement bead 13 can have a longitudinal direction extending transversely to the longitudinal direction (L) of the carcass rail 9a. At least one or a plurality of reinforcement beads 13 can be arranged on the vertical limb of the fastening portion 11 and/or can be arranged on the transverse limb of the fastening portion 11.
Preferably, the rolling bodies 23a, 23b, 23c are supported in a common running carriage 22, the running carriage 22 being displaceably supported between the carcass rail 9a and the at least one drawer rail 10a.
According to possible embodiments, at least one rolling body 23a is rotatable about a horizontal axis in the mounted position and is displaceable along the foldover 16 of the drawer rail 10a.
At least one further rolling body 23a is rotatable about a horizontal axis in the mounted position and is displaceable along the foldover 17 of the carcass rail 9a.
At least one further rolling body 23c is rotatable about a vertical axis in the mounted position and is displaceable along a portion of the carcass rail 9a having a doubled material thickness (2X).
The at least one opening 12, on a second side 20 spaced apart from the fastening side 19 by a material thickness (X), is surrounded by a bulge 21, and the bulge 21 projects transversely from the second side 20 of the fastening portion 11. The head of a screw for fixing the fastening portion 11 to the furniture part 2 is at least partially, preferably substantially entirely, received within the annular bulge 21 in a mounted condition.
The furniture fitting 4 according to the invention has been explained with the aid of a drawer pull-out guide 4a in an exemplary manner. However, the furniture fitting 4 can also be configured as a furniture hinge for movably supporting a furniture part, as a furniture drive for driving a movable furniture part, or as a bearing device for a damper and/or for an ejector for dampening and/or ejecting a movably supported furniture part.
| Number | Date | Country | Kind |
|---|---|---|---|
| A 50611/2021 | Jul 2021 | AT | national |
The present application is a continuation of International Application PCT/AT2022/060253, filed Jul. 15, 2022. Thus, all of the subject matter of International Application PCT/AT2022/060253 is incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/AT2022/060253 | Jul 2022 | US |
| Child | 18417373 | US |
