Vacuum Insulation Lid

Abstract

A vacuum insulation lid or plug comprises stainless steel housing. The housing has a vacuum cavity and has an evacuation hole on it. The evacuation hole has a sealing solder seal block on it. The housing includes a downwardly opening outer cover and a downwardly opening inner cap, the outer cover and the inner cap are welded together with an inner cavity that is formed between the outer cover and the inner cap, and the inner cap is pressed to form an internal thread. Or, the housing comprises an upper cover and a lower cylinder, the lower end of the lower cylinder is closed, the outer diameter of the lower cylinder is smaller than the outer diameter of the upper cover, the upper cover and the lower cylinder are connected by welding and the interior of the lower internal cylinder and the interior of the upper cover form the inner cavity, the side wall of the lower cylinder is pressed to form an external thread and a groove, and a waterproof seal ring sets in the groove.

Description

FIELD OF THE INVENTION

The present relates generally to accessory for heat insulating cup, and specifically, a lid for vacuum insulation cup.

BACKGROUND OF THE INVENTION

Stainless steel insulation cup with internal vacuum cavity has been widely used. Because of its insulation effect, this kind of insulation cups is popular. However, the lid of the insulation cup is not insulated by vacuum cavity. As a result, the heat loses through the lid and the insulating effect of the insulation cup body is weakened.

SUMMARY OF THE INVENTION

In order to overcome the aforementioned shortcomings, a vacuum insulation lid has the same stainless steel vacuum structure and the same thermal insulation effect as a vacuum insulation cup body.

The technical approach of the present invention is: the vacuum insulation lid comprises stainless steel housing, the housing has a vacuum cavity, the housing has an evacuation hole on it, and the evacuation hole has a sealing solder seal block on it.

The said housing includes a downwardly opening cover and a downwardly opening inner cap, the cover and the inner cover are welded together with an inner cavity is formed between the cover and the inner cap, and the inner cap is pressed to form an internal thread.

The said cover has a pit on its top and the evacuation hole is located inside the pit.

The said housing comprises an upper cover and a lower cylinder which are stamped and formed from stainless steel sheet, the lower end of the lower cylinder is closed, the outer diameter of the lower cylinder is smaller than the outer diameter of the upper cover, the upper cover and the lower cylinder are connected by welding and the interior of the lower internal cylinder and the interior of the upper cover form the inner cavity, the side wall of the lower cylinder is pressed to form an external thread and a groove, and a waterproof seal ring sets in the groove.

The advantage of vacuum insulation lid according to the present invention is better insulation effect. The vacuum insulated lid of the present invention has a vacuum cavity. As a result, both the lid and the vacuum insulation cup body have vacuum insulation effect and the materials in the cup can get a full range of insulation. At the same time, the insulation lid uses stainless steel instead of plastic material to avoid the release of the plastic molecules into the liquid in the cup. Thus, the lid has a higher level of health standard. The stainless steel structure of the lid is also stronger and more durable and uniforms the color of the lid and the cup body.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described through the figures and examples as below:

FIG. 1 is a main cross-sectional view of Example 1 of the present invention;

FIG. 2 is a main cross-sectional view of Example 1 of the present invention when in use;

FIG. 3 is a main cross-sectional view of Example 2 of the present invention;

FIG. 4 is an enlarged view of Part A of FIG. 1;

FIG. 5 is a main cross-sectional view of Example 3 of the present invention;

FIG. 6 is a main cross-sectional view (partial) of a vacuum insulation lid of the present invention that comprises of Example 2 and Example 3 when used in conjunction.

Figures: (10) housing; (101) outer cover; (1011) pit; (102) inner cap; (1021) internal thread; (103) upper cover; (104) lower cylinder; (1041) external thread; (1042) groove; (20) sealing solder seal block; (30) waterproof seal ring.

DETAILED DESCRIPTION OF THE DRAWINGS

EXAMPLE 1

As FIGS. 1 and 2 show, the vacuum insulation lid comprises stainless steel housing 10. The housing 10 has a vacuum cavity 11, the housing 10 has an evacuation hole 12 on it, and the evacuation hole 12 has a sealing solder seal block 20 on it. That is, the cavity 11 is vacuumized through the evacuation hole 12 and using the sealing solder seal block 20 seals the evacuation hole 12.

More specifically, the housing 10 includes a downwardly opening outer cover 101 and a downwardly opening inner cap 102. The outer cover 101 and the inner cover 102 are welded together with an inner cavity 11 is formed between the outer cover 101 and the inner cap 102. For instance, the lower edge of the outer cover 101 and the lower edge of the inner cap 102 are welded together. As such, the housing 10 forms a double wall sealing structure. The evacuation hole 12 may be located at the upper end face of the outer cover 101. And, the inner cap 102 is pressed to form an internal thread 1021. Clearly, the internal thread 1021 is screwed on the mouth of a cup and the cup has external threads essentially.

Further, the outer cover 101 has a pit 1011 on its top and the evacuation hole 12 is located inside the pit 1011. This facilitates the vacuumization operation of the inner cavity 11. Also, after the vacuumization is completed and the evacuation hole 12 is sealed, the decorative piece may be provided on the pit 1011 to prevent that the evacuation hole 12 is exposed and the sealing solder seal block 20 is loosed after direct hit, which results the cavity 11 is not vacuum any more.

Thus, the vacuum inside the insulation lid improves the thermal insulation effect of the lid and prevents the more rapid dissemination of internal heat of the insulation cup.

EXAMPLE 2

As FIG. 3 and FIG. 4 show, the only difference to Example 1 is: the depth of the inner cylinder 104 is slightly higher, such as at least 40 mm. Thus, the vacuum insulation lid not only has the basic function of insulation effect, but also may be used as insulated container and is not too hot to be held.

EXAMPLE 3

As FIG. 5 show, the vacuum insulation lid comprises a stainless steel housing 10. The housing 10 has a vacuum cavity 11, the housing 10 has an evacuation hole 12 on it, and the evacuation hole 12 has a sealing solder seal block 20 on it.

Specifically, the housing 10 comprises an upper cover 103 and a lower cylinder 104 which are stamped and formed from stainless steel sheet, the lower end of the lower cylinder 104 is closed, the outer diameter of the lower cylinder 104 is smaller than the outer diameter of the upper cover 103, the upper cover 103 and the lower cylinder 104 are connected by welding, and the interior of the lower internal cylinder 104 and the interior of the upper cover 103 form the inner cavity 11. For instance, the lower edge of the upper cover 103 and the upper edge of the lower cylinder 104 are welded together. As such, the evacuation hole 12 may be located at the upper end face of the upper cover 103 or may be located at the bottom end face of the lower cylinder 104. And, the lower cylinder 104 is pressed to form an external thread 1041 and a groove 1042. A waterproof seal ring 30 sets in the groove 1042. Clearly, the external thread 1041 is screwed on the mouth of a cup and the cup has internal threads essentially.

Thus, the insulation lid becomes an inner lid, so that its lower cylinder 104 is located in the mouth of a cup and further increases the thermal insulation effect of the insulation lid. Of course, the mouth of the cup should have step that the seal ring 30 is tightly pressed against to play the role of waterproof.

Note that, as shown in FIG. 6, the double wall vacuum insulation lid as described in Example 2 and the inner plug vacuum insulated lid as described in Example 3 may not only simultaneously be applied onto a cup, but also separately be used on a cup. That is, the inner plug lid is screwed inside the mouth of the cup and the double wall lid is screwed outside of the cup. Thus, not only better insulation effect is achieved, but also while the double wall outer lid is used a container, the inner plug lid still plays the role of vacuum insulation and the industry technical challenge, that a cup has no use of plastic parts, is overcome.

Throughout the description and claims of this specification, the words “comprise” and “contain” and variations of the words, for example “comprising” and “comprises”, means “including but not limited to”, and is not intended to (and does not) exclude other moieties, additives, components, integers or steps.

Throughout the description and claims of this specification, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the specification is to be understood as contemplating plurality as well as singularity, unless the context requires otherwise.

Features, integers, characteristics, compounds, chemical moieties or groups described in conjunction with a particular aspect, embodiment or example of the invention are to be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith.

Claims

1. Vacuum insulation lid, comprising stainless steel housing (10), wherein: the said housing (10) has a vacuum cavity (11), the said housing (10) has an evacuation hole (12) on it, and the evacuation hole(12) has a sealing solder seal block (20) on it.

2. The vacuum insulation lid according to claim 1, wherein the said housing (10) includes a downwardly opening outer cover (101) and a downwardly opening inner cap (102), the outer cover (101) and the inner cap (102) are welded together so that an inner cavity (11) is formed between the outer cover (101) and the inner cap (102), and the inner cap (102) is pressed to form an internal thread (1021).

3. The vacuum insulated lid according to claim 2, wherein the outer cover (101) has a pit (1011) on its top and the evacuation hole (12) is located inside the pit (1011).

4. The vacuum insulated lid according to claim 1, wherein the said housing (10) comprises an upper cover (103) and a lower cylinder (104) which are stamped and formed from stainless steel sheet, the lower end of the lower cylinder (104) is closed and the outer diameter of the lower cylinder (104) is smaller than the outer diameter of the upper cover (103), the upper cover (103) and the lower cylinder (104) are connected by welding and the interior of the lower internal cylinder (104) and the interior of the upper cover (103) form the inner cavity (11), the side wall of the lower cylinder (104) is pressed to form an external thread (1041) and a groove (1042), and a waterproof seal ring (30) sets in the groove (1042).