WO2024112273A1

WO2024112273A1 - Oven with a fixing element for handle connection

Info

Publication number: WO2024112273A1
Application number: PCT/TR2022/051353
Authority: WO
Inventors: Halit AKDOGAN; Tuncay CIHAN; Mehmet Baris Gocer; Yahya AKKUS
Original assignee: Femas Metal Sanayi ve Ticaret AS
Current assignee: Femas Metal Sanayi ve Ticaret AS
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2024-05-30
Anticipated expiration: 2025-05-24

Abstract

The invention relates to an oven comprising a door (20) with an outer panel (24); an adapter (34) aligning with a hole (26) opened in the outer panel (24) from a corresponding channel (36) and settling on an outer wall (244) of the outer panel (24); and a handle (30) with a gripping extension (32) fixed to the proximal end of the adapter (34). The oven includes a stud (50) passing from a head part (52) to the hole (26) and then settling into a channel (36) of the adapter (34) from a handle extension (54); a flange (44) surrounding the entry part of the hole (26) and leaning against an inner wall (242) of the outer panel (24); and a nut (40) with a through hole (48) engaging with the head part (52) of the stud (50), and a flange (44) surrounding the entry part of the hole (26) and leaning against the inner wall (242) of the outer panel (24).

Description

OVEN WITH A FIXING ELEMENT FOR HANDLE CONNECTION

TECHNICAL FIELD

The present invention relates to an oven that includes a fixing element for securing the handle used to open the oven door to the outer panel of the door.

BACKGROUND OF THE INVENTION

A door is used to close the oven muffle in a hingeable manner. The door is typically obtained by fastening one or more panels to each other. A handle is secured to an outer panel of the door to facilitate easy rotation of the door around the hinge axis to open and close it. The handle typically includes a handle extension and adapters that extend to a glass panel near the ends of the handle extension and are fastened to the handle extension at one end and the outer panel at the other end.

During the assembly of the panels, particularly glass panels, to the adapter with a fixing element, for example, a bolt, damage can occur on the panel during the compression of the fixing element in contact with the panel. To prevent this, typically a flexible sleeve, such as a silicone or rubber sleeve, is placed in the hole opened on the panel, and the bolt is passed through it. In this case, the support of at least two operators is required to hold the handle fixedly in the outer panel and mount it from the inside with a bolt.

KR20060039546A discloses a door handle fixing structure in which an aluminum washer is placed to pass a front glass and the door handle is combined with a screw entering the washer. According to the invention, the door handle fixing structure comprises a front glass having mounting holes formed on both sides and forming a front outer of the door; a door handle provided on one side of the front glass and protruding outward so that a user can hold it; a washer mounted on the mounting hole to control the surface pressure around the mounting hole while protecting the inside of the mounting hole, which is fixed from the inside to the outside of the front glass and is configured to include a screw to secure the door handle. The screw passes through the washer and is connected to one side of the door handle. BRIEF DESCRIPTION OF THE INVENTION

The object of the invention is to reduce the likelihood of damaging the outer panel during the handle assembly to the outer panel.

For the mentioned aims, the invention relates to an oven comprising a door having an outer panel; an adaptor that aligns with a through hole opened in the outer panel from a corresponding channel and settles on an outer wall of the outer panel; and a handle including a gripping extension fixed to the proximal end of the adaptor. The oven includes a stud that continues from a head part to the hole and settles into a channel of the adaptor from a handle extension; a flange that surrounds the hole from the entry part and leans on an inner wall of the outer panel; and a nut that includes a threaded hole in which the head part of the stud engages. After the stud is fixed to the channel of the adaptor, it is passed through the hole to settle from the head part to the hole, and the nut is rotated until it engages the threaded hole and the flange leans on the inner wall to fix the stud to the outer panel. Thus, the clamping force created by the nut on the inner wall of the outer panel is distributed over a wide area by the flange, preventing the formation of cracks or similar damages around the hole with high internal stresses.

In a preferred embodiment of the invention, the outer panel is made of glass material. Since the glass material has a sensitive corner structure around the hole, a reduced pressure area is obtained with the flange that leans on the inner wall as it surrounds the hole, against a stress that will carry the handle.

In a preferred embodiment of the invention, the portion of the nut extending inside the hole includes a conical extension tapering towards the outer wall. The conical extension ensures that the nut does not contact the inner surface of the hole while entering the hole. Thus, the nut holds the stud by gripping from the head part through the hole without contacting the hole.

In a preferred embodiment of the invention, the conical extension is adjusted to lean on a collar part facing out from the hole and surrounding the channel of the adaptor. The contact of the adaptor surrounding the hole with the outer wall is reduced, and its support from the inner wall by the flange is provided.

In a preferred embodiment of the invention, the diameter of the threaded hole of the nut is adjusted to be larger than the diameter of the concentric channel. In this way, the thick head of the stud passes through the threaded hole, and the adaptor supports from the radial inner part to the head with its narrow handle extension creating a step. In this way, the stud can be passed through by being tightly fixed to the adaptor with a pre-torque. In a preferred embodiment of the invention, the adaptor is adjusted to be supported on the inner wall by only the flange in the outer panel. In this case, the load of the handle is distributed over a wide area by the flange, reducing the pressure applied to the inner wall, and the handle is carried on the panel without almost any load on the outer wall.

In a preferred embodiment of the invention, the handle extension is in the form of a bar extending parallel and distanced to the outer wall of the outer panel. This structure allows a long handle extension to be adjusted longitudinally or transversely on the outer wall of the panel.

In a preferred embodiment of the invention, the handle includes at least two adaptors distanced from each other and supporting the handle extension near its two ends, extending perpendicularly to the outer panel. In this way, the weight of the gripping extension is distributed to the flanges corresponding to the adaptors.

In a preferred embodiment of the invention, the channel includes a screw thread engaging with the handle extension. The screw thread can be applied both longitudinally and partially. The screw thread ensures the fixing of the stud to the adaptor from the handle extension.

In a preferred embodiment of the invention, the inner-facing part of the flange of the nut is adjusted to include a key thread on the head part. Thus, after the assembly of the stud to the adaptor, the nut can be mounted with a predetermined torque, for example, to the head with the help of a key, when the head part passes through the hole.

In a preferred embodiment of the invention, the diameter of the head part is adjusted to be larger than the diameter of the concentric conical extension. In this way, regardless of how small the hole diameter is adjusted, it can be easily intervened to mount or remove the nut to the head.

In a preferred embodiment of the invention, both the nut and the corresponding stud are made of metal material. The metal material provides sufficient thermal resistance against the temperatures coming to the oven door, as well as a long life.

BRIEF DESCRIPTION OF THE FIGURES

Figure 1 is a perspective view of a representative embodiment of the oven subject to the invention with the door open.

Figure 2 is a perspective view of the oven door given in Figure 1 with the handle mounted on the glass outer panel.

Figure 3 is a perspective view of a representative embodiment of a flanged nut used in the oven door.

Figure 4 is a top front and bottom transverse sectional view of the nut shown in Figure 3. Figure 5 is a side sectional view of a representative application of the oven subject to the invention with a handle mounted to a glass outer panel with a nut and stud.

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, the subject development of the invention has been described with reference to examples, without any limitation, solely to better explain the subject matter.

In Figure 1 , a built-in oven representing the subject matter of the invention is shown in a perspective view with a door (20) in the open position. The oven has a casing (10) surrounding a cooking chamber with a hinged door (20). A transverse front panel (12) is provided on the casing (10) above the opening (14) opening into the cooking chamber. Control elements are placed on the front panel (12). The door (20) fits snugly to the opening (14) when closed. An inner panel (22) of the door (20) is made of a single piece of glass and is circumferentially located around the opening (14) when the door (20) is closed. The inner panel (22) is fixed parallel to an outer panel (24), with a gap therebetween. A transverse handle (30) extends near the upper edge of an outer wall (244) of the outer panel (24). The handle (30) includes a cylindrical bar form gripping extension (32) and adapters (34) that fix it near its opposite ends to the outer panel (24).

In Figure 2, the door (20) is shown together with the handle (30). The outer panel (24) is a single piece of glass panel. The handle (30) is placed near the upper edge in a way that it will not block the view through the light-transmitting middle portion of the outer panel (24), and is located at the lower corner of a hinge (not shown) to provide the maximum moment arm.

In Figure 3, a nut (40) used for mounting the handle (30) to the outer panel (24) is shown in perspective. The nut (40) has a hexagonal head portion (42) suitable for a wrench and a threaded hole (48) extending longitudinally through its center. At the lower end of the head portion (42), a flange (44) in the form of a washer is formed around the nut (40). The flange (44) is flat and extends radially outward from the head portion (42). At the lower part of the flange (44), there is a conical extension (46) narrowing towards the end. As shown in Figure 4, the head portion (42), flange (44), and conical extension (46) are co-axial and integral. In the bottom sectional view, a central threaded hole (48) is visible. The threaded hole (48) is cylindrical and starts from the head portion (42) at one end and terminates at the narrow diameter of the conical extension (46) at the other end. The diameter of the widest upper end of the conical extension (46) is set to be narrower than the diameter of the head portion (42).

In Figure 5, the handle (30) is shown mounted to the outer panel (24). An adapter (34) is mounted at one end to the inward-facing part of a bar-form handle extension (54), and at the opposite proximal end, it abuts against a hole (26) in alignment with the outer panel (24). The hole (26) is a circular hole and extends between an inner wall (242) and an outer wall (244) of the outer panel (24). A channel (36) containing internal screw threads is opened inward from the proximal end center of the adapter (34). A stud (50) with threads is fixed through the handle extension (54) into the channel (36). A head portion (52) of the stud (50) extends outward co-axially with the adapter (34). The stud (50) is rotated with an Allen wrench through a opening (51 ) opened on the outward-facing end face of the head portion (52) and is fitted into the channel (36). The head portion (52) is passed from the hole (26) from the outer wall (244) to the inner wall (242). Thus, the head portion (52) extends both in the hole (26) and perpendicular inward from the inner wall (242) of the outer panel (24). An operator fits the nut (40) from the head portion (52) onto the stud (50) with the help of a wrench. This process is carried out by rotating the head portion (42) of the nut (40) with a wrench. The threaded hole (48) engages with the head portion (52), and the nut (40) progresses over the stud (50) until the flange (44) fits snugly against the inner wall (242) of the hole (26). Here, the nut (40) directly carries the stud (50) in the outer panel (24) by tightening the nut (40) to a preset torque against the inner wall (242) with the flange (44) pressing against it.

When the assembly is completed, i.e. , when the flange (44) is seated against the inner wall (242), the conical extension (46) passes through the hole (26) without contacting it. In this way, it does not lean against the inner wall of the hole (26) and does not create any stress there. The lower end face of the conical extension (46) rests against the corresponding end face of the proximal end of the adapter (34). In this way, the nut (40) carries the adapter (34) and the mounted handle extension (54) through the flange (44).

REFERENCE NUMBERS

10 - Casing 34 - Adapter

12 - Front panel 36 - Channel

14 - Opening 40 - Nut

20 - Door 42 - Head part

22 - Inner panel 44 - Flange

24 - Outer panel 46 - Conical extension

242 - Inner wall 48 - Threaded hole

244 - Outer wall 50 - Stud

26 - Hole 51 - Opening

30 - Handle 52 - Head part

32 - Grip extension 54 - Handle extension

Claims

1. An oven comprising a door (20) with an outer panel (24); an adapter (34) positioned on an outer wall (244) of the outer panel (24), aligning with a through hole (26) on the outer panel (24) from a corresponding channel (36); and a handle (30) having a grip extension (32) secured to a proximal end of the adapter (34), characterized by a stud (50) extending from a head part (52) through the hole (26) and continuing from a handle extension (54) positioned in the adapter's (34) channel (36), a flange (44) abutting an inner wall (242) of the outer panel (24) encircling the entrance of the hole (26), and a nut (40) having a threaded hole (48) that engages the head part (52) of the stud (50).

2. An oven according to claim 1 , wherein the outer panel (24) is made of glass material.

3. An oven according to any of the preceding claims, wherein the portion of the nut (40) extending within the hole (26) includes a conical extension (46) tapering towards the outer wall (244).

4. An oven according to claim 3, wherein the outward-facing rim of the conical extension (46) from the hole (26) is arranged to abut the adapter (34) in a manner surrounding the channel (36).

5. An oven according to any of the preceding claims, wherein the diameter of the threaded hole (48) is set larger than the concentric diameter of the channel (36).

6. An oven according to any of the preceding claims, wherein the adapter (34) in the outer panel (24) is only supported by the flange (44) on the inner wall (242).

7. An oven according to any of the preceding claims, wherein the handle extension (54) is in the form of a bar extending parallel and distant from the outer wall (244) of the outer panel (24).

8. An oven according to any of the preceding claims, wherein the handle (30) includes at least two adapters (34) set distant from each other, extending perpendicularly to the outer panel (24), supporting the handle extension (54) near both ends.

9. An oven according to any of the preceding claims, wherein the channel (36) is equipped with screw threads engaging the handle extension (54). An oven according to any of the preceding claims, wherein the nut (40) is set to include a key slot extending on the inward-facing part of the flange (44). An oven according to claim 10, wherein the diameter of the head part (42) is set larger than the concentric diameter of the conical extension (46). An oven according to any of the preceding claims, wherein the nut (40) and the corresponding stud (50) are made of metal material.