Abstract
The invention relates to a pan lid made of glass having a lid handle attached on the surface thereof directed outwards, the lid handle being connected to the glass surface via an adhesive connection.
Claims
1. A pan lid made of glass having a lid handle attached to the surface thereof directed outwards, wherein the underside of the lid handle is connected to the glass surface via at least one spacer, the spacer prescribing at least one cavity between the underside of the lid handle and the outer surface of the glass lid, and the at least one cavity being filled at least partially with the adhesive connecting the lid handle to the glass surface, wherein the handle is made of stainless steel and the spacer is configured as a silicone ring which surrounds the outer circumference of the underside of the lid handle.
2. The pan lid according to claim 1, wherein the underside of the lid handle is provided with at least one tab which engages in the adhesive situated in the at least one cavity.
3. The pan lid according to claim 1, wherein the quantity of adhesive is chosen such that the at least one cavity is filled completely.
4. The pan lid according to claim 1, wherein the quantity of adhesive is chosen such that the at least one cavity is filled only partially.
5. The pan lid according to claim 1, wherein the lid handle is configured in the form of a knob or as bow-type handle.
6. The pan lid according to claim 5, wherein the lid handle is configured as a knob with an essentially round cross-section.
7. The pan lid according to claim 1, wherein a polymerisation adhesive, polycondensation adhesive or a polyaddition adhesive is used as adhesive.
8. The pan lid according to claim 7, wherein the adhesive is a two-component adhesive based on silicone.
9. A method for the production of a pan lid having a glued lid handle according to claim 1, wherein a) the spacer is injected directly onto the glass lid and an adhesive layer is applied; or the spacer is connected to the surface of the glass lid by a first adhesive layer and a further layer is applied on the then hardened adhesive layer; and b) the lid handle is connected to the adhesive layer.
Description
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
(1) The invention is described subsequently in more detail with reference to five Figures.
(2) FIG. 1 shows schematically the construction and connection technique of a lid handle in the form of a knob to a glass lid according to the state of the art.
(3) FIG. 2 shows schematically an embodiment of a glass lid-to-stainless steel handle connection according to the invention by means of adhesive.
(4) FIG. 3 shows a further embodiment of a glass lid-to-stainless steel handle connection according to the invention via additional tabs.
(5) FIG. 4 shows an embodiment according to the invention of the connection technique via a spacer plate.
(6) FIG. 5 shows, in the Figure sequences 5A, 5B and 5C, the method for connecting the lid handle in the form of a knob to the glass surface of the lid.
(7) FIG. 1 now shows schematically a pan lid 11, the individual components which are required for connection of a knob 1 to a glass surface 2 of a pan lid 11 being cited in FIG. 1 a. The pan lid 11 thereby has a through-boring 3 which is provided for guiding through a screw 4 which is disposed on the underside 7 of the knob 1. For the connection, it is then necessary that the knob 1 with its screw 4 is guided through the through-opening 3 in order then to connect it to the nut 20.
(8) As emerges from FIG. 1, it is hence required in the embodiment of the state of the art that, on the one hand, a through-boring 3 is introduced into the glass surface 2 of the pan lid 11. This is problematic inasmuch as the holes are indeed associated with certain tolerances because of the typical glass properties so that the result is not always secure retention of the screw in the through-opening. Furthermore, it is hereby disadvantageous that as a result of the fact that the screw 4 is guided through the glass surface 2 and that the latter then has contact with the inner hot media, the result is good heat conductance so that the knob 1 is heated. Furthermore, it is disadvantageous that the screw/nut on the inside of the lid represents a raised portion so that dirt can accumulate here.
(9) FIG. 1 hence shows clearly that the connection according to the state of the art does not lead to a perfect technical functional solution and in addition is complex in production.
(10) In FIG. 2, a glass lid-to-stainless steel handle connection is now shown schematically in section. In FIG. 2, an embodiment of the invention is represented in which the handle 1 is configured as a knob and essentially has a rotationally symmetrical design. According to the present invention, the stainless steel handle 1 is now connected to the surface 2 of the pan lid 11 via its underside 7 by means of an adhesive 5. It is thereby essential to the invention that a spacer 6 is provided, which is configured in the form of a silicone ring, in the embodiment according to FIG. 2, and which completely surrounds the outer circumference of the underside 7 of the knob 1. The cavity 12 which is prescribed by the spacer 6 is filled, according to the invention, with an adhesive 5 which is a silicone adhesive in the case of the example. A connection is consequently now ensured which is high-temperature-resistant, dishwasher-proof and thermal shock-resistant. The spacer 6, which has a rectangular cross-section in the embodiment according to FIG. 2, has in addition also the function of ensuring rigidity relative to tilting of the connection and also of protecting the adhesive connection from damage due to manual influences or media.
(11) According to the invention, a technical procedural solution which is very simple to achieve is made available hence for the first time, which solution overcomes in addition also the disadvantages of the state of the art and hence makes a connection available which fulfils all the technical requirements in use and in addition is also economical in production.
(12) In FIG. 3a, FIG. 3 shows a full-surface adhesion of the knob 1 via a silicone ring 6, as described already in more detail in FIG. 2. In contrast hereto, FIG. 3b shows an adhesion via tabs 8, 8 in which the adhesive 5 does not completely fill the cavity surrounded by the ring 6. The tabs 8, 8 which are configured on the underside 7 of the knob 1 in the form of a raised portion, are now provided for the purpose of engaging in the adhesive 5 which is situated in the cavity 12 formed by the silicone ring 6. For this embodiment, it is thereby no longer required that the quantity of adhesive 5 is chosen such that it completely fills the cavity since in fact the connection is ensured by the tabs 8, 8 being immersed in the adhesive 5. The advantage of this embodiment resides in the fact that smaller quantities which are actually required for complete filling can be provided during metering of the adhesive 5 so that adhesive does not finish up being pressed out over the glass surface 2. If hence the adhesion is ensured via tabs 8, 8 or the like, a varying quantity of adhesive and/or a variation in height, volume of the spacer can be compensated for.
(13) FIG. 4 now shows an embodiment in which a spacer plate 13 is provided as spacer. The spacer plate 13 is thereby disposed on the glass surface 2 of the glass lid 11 and has three cavities 12, 12 and 12. According to the invention, it is of course also possible that only two cavities or even more than three cavities are provided. In this embodiment, it is hence provided that the adhesion of the knob 1 to the surface 2 of the glass lid 11 is affected via the quantity of adhesive situated in the cavities 12, 12 and 12. For secure adhesion, it can thereby likewise be provided that, as shown in FIG. 4b, the knob 1 again has tabs 8, 8 and 8 on the underside. These tabs then engage exactly in the cavities 12, 12 and 12 so that a secure connection is consequently ensured.
(14) FIG. 5 now shows, in the Figure sequence a), b) and c), the method for the production of the connection according to the invention.
(15) According to the invention, it is provided for this purpose that, in a first step, the spacer 6 here in the form of a silicone ring is placed on the glass surface 2. Subsequently, then a first thin layer of adhesive 5 is applied and effects fixing of the ring 6 to the glass surface 2. In the second step, after hardening of the adhesive layer 5 of the first adhesive layer, a second adhesive layer 5 is applied. In the still unhardened state of the second adhesive layer 5, the knob 1 with its tab 8 disposed on the underside 7 is now pressed into the still unhardened adhesive layer 5.
(16) This embodiment has the advantage that no silicone adhesive is pressed out beyond the spacer, i.e. between spacer 6 and the underside 7 of the knob 1 or between the glass surface 2 and below the spacer 6. According to the invention, it is of course also possible that the method is modified such that the spacer 6 is injected onto the glass surface 2 in a first operation (not illustrated) and that adhesive is then introduced in a second operation in order then to effect a connection with the tabs 8 which are disposed on the underside 7 of the knob.
