JPH0525546Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stainless steel pot lid with a glass window for use in a cooking pot.

[Prior Art] Generally, cooking pot lids are integrally formed of light metal such as aluminum or aluminum alloy. In order to observe the state of the food to be cooked, a large-diameter glass window 101 may be provided in the center of the metal pot lid 100, as shown in FIG. 3, for example.

To process the glass window 101 as shown in FIG. 3, first, as shown by A in FIG.
3 is bent inward as shown by arrow X to form a cylindrical flange 104 extending downward. Then, as shown by B in FIG. 4, the upper part of the flange 104 is bent radially outward of the large diameter hole 103 to form a step part 105. Furthermore, C in Figure 6
As shown, the tempered glass 106 is fitted into the stepped portion 105 from below, and the lower edge of the flange 104 is caulked inward in the radial direction of the large diameter hole 103 as shown by arrow Z to fix the tempered glass 106.

[Problems that the invention aims to solve] Recently, as consumers have become more oriented toward luxury products, their preferences have focused on stainless steel cookware, and as a result, the demand for stainless steel pan lids with glass windows has increased. is increasing.

However, when processing a stainless steel pot lid using the method shown in FIG. During this process, the lower edge of the flange 104 becomes rough and cracked, and as a result, it is not possible to process the structure shown in Fig. 3 using stainless steel, and it is not possible to manufacture a stainless steel pot lid with a glass window. I couldn't do it. In general, when metal materials are processed, the processed parts become hardened, that is, work hardening occurs, and the more times the metal material is processed, the lower the elongation and impact strength of the processed parts. Skin tends to become rough and cracked. especially,
Stainless steel materials are susceptible to work hardening due to drawing.

In addition, tempered glass is strong against impact, but if it exceeds a certain limit, it will break. Therefore, when fixing the tempered glass, it is necessary to avoid applying a large impact to the tempered glass.

When fixing tempered glass, this invention
To provide a stainless steel pot lid with a glass window that can prevent work hardening from occurring in a processed part and also prevent the tempered glass from being damaged.

[Means for Solving the Problems] In order to solve the above problems, the present invention includes a stainless steel main body 10 having a large diameter hole 11 in the center,
In the stainless steel pot lid with a glass window, the tempered glass 20 is fitted into the large diameter hole 11, and the main body 10 has a cross-sectional shape radially outward of the large diameter hole 11 at its inner peripheral edge. A U-shaped holding part 15 that opens outward is integrally provided on the lower side, and the holding part 1
5 is made of stainless steel and whose inner peripheral edge is fixed by
A ring 30 is provided separately, and the first ring 30 is integrally provided with a U-shaped connecting portion 31 on its outer peripheral edge that has a U-shaped cross section that opens inward in the radial direction of the large diameter hole 11 on the lower side. A second ring 32 made of stainless steel whose outer peripheral edge is fixed by the portion 31 is provided separately, and the second ring 32 has a cylindrical glass fitting part 17 extending downward from its inner peripheral edge, and a glass fitting part 17. It is characterized in that it is integrally equipped with an inward flange 18 extending radially inward from the lower edge of the glass, and the tempered glass 20 is fixed between the holding part 15 and the inward flange 18.

[Function] The tempered glass 20 has the holding part 15 and the second ring 3
It is clamped and fixed with the inward flange 18 of No. 2. The second ring 32 is fixed to the holding part 15 by the first ring 30. Therefore, tempered glass 20
When clamping and fixing, there is no need to press the holding part 15 and the inward flange 18 directly.
Therefore, no large impact is applied to the tempered glass 20.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a schematic cross-sectional view showing a stainless steel pot lid with a glass window according to the present invention. As shown in Figure 1,
The pan lid body 10 adopting the present invention has a plate thickness of approximately
It is a stainless steel member with a diameter of about 0.5 to 0.6 mm, and has a large diameter hole 11 in its center. The outer peripheral edge of the main body 10 has a cylindrical portion 12 that integrally extends downward therefrom.
It is equipped with The lower edge of the cylindrical portion 12 is provided with a small-diameter fitting portion 13 via a stepped portion, and the fitting portion 13 is configured to fit into an opening of a pan (not shown).

At the edge of the large diameter hole 11, a holding part 15 is attached to the main body 10.
is formed integrally with. As shown enlarged in the upper part of FIG. 1, the holding part 15 has a U-shaped cross section that opens outward in the radial direction of the large diameter hole 11.

The holding part 15 includes a first ring 30 made of stainless steel.
The inner periphery of is fixed. A connecting portion 31 with a U-shaped cross section that bends downward and opens toward the large diameter hole 11 is formed on the outer peripheral edge of the first ring 30, and this connecting portion 31 connects the second ring 32 made of stainless steel. The outer periphery is fixed. The second ring 32 integrally includes a cylindrical glass fitting part 17 extending downward from its inner peripheral edge, and an inward flange 18 extending radially inward from the lower edge of the glass fitting part 17. A tempered glass 20 is fixed between this inward flange 18 and the holding portion 15. Note that the first ring 30 and the second ring 32 have a plate thickness of approximately
It is a stainless steel member with a thickness of about 0.5 to 0.6 mm.

The tempered glass 20 has a thickness (for example, about 3.2 to 4.0 mm) and a material that sufficiently exhibits heat resistance and impact resistance. Note that 21 is a knob attachment hole bored in the center of the tempered glass 20.

Next, the processing steps for the above structure will be explained based on FIG. 2.

First, as shown by A in FIG. 2, a holding part 15 is formed on the main body 10, and the inner peripheral edge of the first ring 30 is caulked with this holding part 15. At this stage, the first ring 30 has a downward cylindrical flange 30a on its outer peripheral edge, and there is a radial gap L1 between the end surface of the holding part 15 and the inner peripheral surface of the cylindrical flange 30a. is formed.

Next, as shown by B in FIG.
2 is placed on the lower side of the main body 10, and as shown by arrow A, the second ring 32 is fitted from the lower side facing the gap L1. At this time, the tempered glass 20 is fitted in advance into the glass fitting part 17 of the second ring 32, and the lower surface of its outer periphery is formed into the inward flange 18.
is supported by the top surface of the

Then, as shown by C in FIG. 2, the cylindrical flange 30a of the first ring 30 is caulked radially inward as shown by arrow Z. As a result, the first ring 30 has a connecting portion 31 formed on its outer periphery.
The outer peripheral edge of the second ring 32 is held by the second ring 32. Therefore, the first ring 30 is integrally supported by the main body 10 by the holding part 15, and furthermore, the first ring 30 and the second ring 32 are integrally connected to hold the tempered glass 20.

Note that the surface of the main body 10 is subjected to polishing processing (for example, hairline processing) or the like, if necessary.

In the above structure, the tempered glass 20 is
and the inward flange 18 of the second ring 32, and the second ring 32 is fixed to the first ring 30.
It is fixed to the holding part 15 by. That is, according to the above structure, when clamping and fixing the tempered glass 20, only the first ring 30 needs to be caulked, and there is no need to directly caulk the holding part 15 and the inward flange 18 with a press. Therefore, tempered glass 20
can be fixed without applying a large impact to the tempered glass 20, thereby preventing the tempered glass 20 from being damaged.

Further, according to the above structure, the first ring 30 and the second ring 32 which are separate from the holding part 15 are provided,
Tempered glass 2 is created through the processing process shown in Figure 2.
0 is fixed, the part to be bent as shown in Fig. 2A (holding part 15) and the part to be bent as shown in Fig. 2C (first ring 30) are separate parts. Therefore, the number of machining times for each is different from that of the flange 104 in Fig. 4, which has a conventional structure.
It has decreased compared to . Therefore, tempered glass 2
To obtain a stainless steel pot lid with a glass window, which can prevent roughness and cracking due to work hardening in a processed part for maintaining 0, and which could not be obtained conventionally due to work hardening. I can do it.

[Effects of the Invention] As explained above, according to the present invention, the tempered glass 20 can be fixed without applying a large impact to the tempered glass 20, and the tempered glass 20 can be prevented from being damaged. Moreover, of course, it is possible to prevent roughness and cracks from occurring due to work hardening in the processed portion for holding the tempered glass 20.
Therefore, by adopting the present invention, it is possible to manufacture a pot lid with a window that includes a stainless steel main body 10 and a tempered glass 20, and it is possible to mass-produce products that can meet the recent trend toward luxury goods. .

Moreover, in the present invention, in addition to the holding part 15, the first ring 30 and the second ring 32 are simply provided separately, so the processing process is not complicated, and an inexpensive and durable product can be provided. .

[Brief description of the drawings]

Fig. 1 is a schematic cross-sectional view showing the stainless steel pot lid with a glass window of the present invention, Fig. 2 is a partial schematic cross-sectional view showing the processing steps for the stainless steel pot lid with a glass window shown in Fig. FIG. 4 is a partial schematic cross-sectional view showing the processing steps for the pan lid with a glass window shown in FIG. 3. DESCRIPTION OF SYMBOLS 10... Main body, 11... Large diameter hole, 15... Holding part, 17... Glass fitting part, 18... Inward flange, 20... Tempered glass, 30... First ring, 32... Third 2 rings.

Claims (1)

[Scope of utility model registration request] The main body 10 made of stainless steel has a large diameter hole 11 in the center, and a tempered glass 20.
In a stainless steel pot lid with a glass window in which a hole 10 is fitted into a large diameter hole 11, the main body 10 has a U-shaped holding part on its inner peripheral edge whose cross section opens outward in the radial direction of the large diameter hole 11. 15 is integrally provided on the lower side,
A first ring 30 made of stainless steel whose inner peripheral edge is fixed by the holding part 15 is provided separately, and the first ring 3
0 is made of stainless steel and has a U-shaped connecting part 31 whose cross section opens inward in the radial direction of the large diameter hole 11 on the lower side, and the outer peripheral edge is fixed by the connecting part 31. A second ring 32 is provided separately,
The second ring 32 has a cylindrical glass fitting part 17 extending downward from its inner peripheral edge, and a glass fitting part 1
A stainless steel product with a glass window, characterized in that it is integrally equipped with an inward flange 18 extending radially inward from the lower edge of 7, and a tempered glass 20 is fixed between the holding part 15 and the inward flange 18. Pot lid.