The present invention relates to tensile bearing and rod linkage of the set of sliding shelves (PD), particularly installed in home cooking ovens and related ones, where mentioned bearing, it is configured by a single part, made of engineering plastic, stainless steel or another compatible material, designed to be installed on the surface of the counter door of the oven, through fitting into an orifice practiced on this surface, while the locking of the bearing in this orifice is held by the provision of a beveled skirt and a collar, both applied on the outer side of the bearing; said tensile bearing has a longitudinal slot and a channel that communicates with each other and allow docking and rotation of the end of the rod of the set of shelves when the oven door is opened or closed.
It is widely known that the sliding shelves applied in the ovens of the stoves in general require some components for the realization of their movement, which act jointly as soon as the oven door is opened or closed.
These components consist of at least one pair of sliding guidance systems fixed on the inner side walls of the oven, at least one shelf bearings or trails that slide on the aforementioned guides, and a pair of rods protruding from the frontal-lateral parts of the shelf (shelves) and said rods being provided with free ends provided and folded in the shape of eyelet or hook capable of coupling into tensile bearings, generally placed on the inner surface of the oven door.
The conventional tensile bearings generally are configured by metal parts and stamped so as to configure a bulkhead to fit the end of the rod, even allowing its rotation on the bulkhead of the bearing, in order to ensure the perfect sliding of the set of shelves at the time of opening or closing of the oven door.
What happens is that these stamped metal parts, as a rule, depend on some manufacturing processes for their correct attachment to the surface of the oven door.
One of the processes to set the tensile bearings (M1) on the counter oven door uses two or more rivets (R) (see
Another conventional method (also referred to in
As noted, these conventional processes, in addition to the tensile bearings themselves, depend on other extra components, such as rivets, adhesives and process steps at various sites, such as curing of the adhesive in thermal treatment chambers, computing considerable increase of the final cost of the product when one considers materials (components), labor and curing time.
Another alternative process, already known, was developed by the holder of this privilege himself and can be viewed in document BR MU 8801927-6. This relates to a rod linkage of the sliding shelf, which can do without the additional stamped part and foresees that, in its lieu, the bearing (M3) is obtained through a stamp on the very counter door (P) of the oven (see
Although more efficient than the other one already previously mentioned and the fact that this type of bearing can be applied to glass, it still requires processes of stamping and drilling, steps that help endear the manufacturing process
To solve the above mentioned drawbacks, the present invention will provide significant advantages in relation to tensile bearings for drive rods of shelves inside the oven of stoves and other ones related, enabling an increase in performance, application both on the inner glass of the door and in the door itself, and presenting a more favorable cost/benefit ratio.
The invention ordinarily comprises a cylindrical component made of engineering plastic or metal, that is, with special characteristics such as, for example, resistance to high temperatures.
This component is press-fitted into the orifice practiced in the inner glass of the oven door or orifice practiced in the oven so as to remain as a stopper. The outer portion of the component has a longitudinal slot which favors the fitting into the orifice of the counter door and a transverse channel in which the folded end of the rod of the set of shelves is housed.
Therefore, after the assembly, said component with its portion of the stopper, act as anchor for rod tensile and, at the same time, allows said end to rotate in the transverse channel, every time the door is opened or closed.
Some substantial advantages can be described, such as:
(i) improvement of the assembly: when assembly on the inner glass is necessary only the drilling of the orifices in the inner glass; when assembled in the counter door of the oven, only the stamping steps of the orifices are necessary; performed during the same step of the other stamps of the counter door, fitting labor is also favored by the longitudinal slot foreseen in the innovated plastic or metal part;
(ii) improves cleaning by the consumer, because it has no sharp corners and it is extremely easy to disassembly and subsequent assembly on the part of any user, and
(iii) reduces energy cost, since eliminating the use of adhesives, it also eliminates their curing step, and reduces manufacturing cost, as it would avoid the use of rivets, adhesives and other accessories.
The structure of the invention together with further advantages thereof may best be understood by reference to the attached drawings and the following description:
While the present invention may be susceptible to a different modality, it is shown in the drawings and in the following detailed discussion, a preferred modality of the invention with the understanding that the present description must be considered an exemplification of the principles of the invention, without no intention of being limited to what is illustrated and described herein.
The tension bearing (1) belongs to the field of accessories for stoves (F), and other related items, and more particularly, it acts as anchoring element and rotation of the end (E) of the rod (H) of the set of sliding shelves (PD) of the type that is installed in ovens (F1) of stoves (F), including mobile-type, embedded, bench, and related ovens.
According to the present invention, the tensile bearing (1) is preferably made in one piece, obtained preferably in engineering polymer, of the type Teflon®, Zytel®, Fortron®, special silicone and other, that is, with special characteristics, such as, for instance, resistance to high temperatures and may be also made from other materials, such as steel.
This bearing (1) presents itself ordinarily cylindrical and provided with a central longitudinal slot (2) of a thickness (x), which starts at the base (3) of the bearing and extends to reach a transverse channel (4) located next to the head (5) of the bearing, whose channel has a diameter (d), which corresponds to the outer diameter of the end (E) of the rod (H). The longitudinal slot (2) divides the bearing into two portions (1a) and (1b) flexible between each other, acting with spring effect associated with the memory of the manufacture material of the bearing.
The base (3) has outer peripheral collar (6), and just above it, a beveled skirt (7) is provided, which sets, between the widened base (7a) of this and the collar (6), a recessed space (8) for housing of the edge of the orifice (O2), preferably practiced on the inner glass (V) of the oven (F1), at the time of the assembly of the tensile bearing (1) in the stove. In an alternative embodiment, the orifice (O2) can be practiced directly on the counter door (P).
Since the preferred embodiment is the attachment on the inner glass, it is highlighted that the consumer himself can easily remove the tensile bearing described, since cooking ovens are provided in the state of the art, with removable inner glass, thus, facilitating cleaning the oven and components parts, in addition to facilitating, when necessary, the replacement of the part. Thus, to fit the tensile bearing (1) in the hole (O2) of the inner glass or counter door, just bend the portions (1a) and (1b) in order to bring them together, allowing the bearing to pass through said hole whose inner edge is positioned in the space (8). When releasing the parts (1a) and (1b), they, due to the flexibility of the material, return to a resting position, turning the orifice (O2) stable between the skirt (7) and the collar (6), consequently allowing that the channel (4) houses the end (E) of the rod (H), allowing its rotation at the time of the opening and closing of the door (P) of the oven (F1).
It is true that when the present invention is put into practice, other related shapes can be made, not being restricted to the examples mentioned above. Changes relative to certain details of construction, shape and material can be practiced without implying moving away from the fundamental principles that are clearly substantiated on the set of claims, being thus understood that the terminology employed had the purpose not to limit it.
Number | Date | Country | Kind |
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102013001676 | Jan 2013 | BR | national |
Number | Name | Date | Kind |
---|---|---|---|
3157377 | Orenick | Nov 1964 | A |
3188030 | Fischer | Jun 1965 | A |
3550219 | Van Buren, Jr. | Dec 1970 | A |
4124320 | Rapata | Nov 1978 | A |
4185515 | Webb | Jan 1980 | A |
4356987 | Schmid | Nov 1982 | A |
4637373 | Shirai | Jan 1987 | A |
5603810 | Michler | Feb 1997 | A |
6161804 | Paske | Dec 2000 | A |
6357709 | Parduhn | Mar 2002 | B1 |
Number | Date | Country |
---|---|---|
476759 | Dec 1937 | GB |
2010022491 | Apr 2010 | WO |
Number | Date | Country | |
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20140202446 A1 | Jul 2014 | US |