TW202033143A - Thermal insulation cover structure of thermal insulation container which has excellent sealing effect and is able to easily and effortlessly unscrew the inner cover - Google Patents

Abstract

Disclosed is a thermal insulation cover structure of a thermal insulation container, which includes: an inner cover, an upper cover and an inner plug. The upper cover is coupled with the inner cover via screw threads, and the inner plug is positioned so as to dispose the inner plug inside the inner cover. The inner plug is made of stainless steel material. When the inner cover is coupled with an opening portion of a container main body, an outer wall of the inner plug is in tight contact with an inner wall of the opening portion of the container main body via a straight wedge portion and a tapered wedge portion, so as to achieve the purposes of stopping water leakage, preventing hot air leakage and prolonging thermal insulation effect. By the design of the straight wedge portion and the tapered wedge portion, the thermal insulation cover has excellent sealing effect, while the inner cover can be easily and effortlessly unscrewed. Moreover, the inner plug can fully avoid various problems caused by the conventional annular rubber sealing member.

Description

Heat preservation cover structure of heat preservation container

The invention relates to a sealing structure of a heat-preserving cover of a heat-preserving container. The thermal insulation container includes, but is not limited to, thermal insulation cups, thermal insulation bottles, thermal insulation tanks, thermal insulation buckets, thermal insulation pots, accompanying thermal insulation pans, and other containers that require thermal insulation, tightness prevention, and leakage prevention.

The heat-preserving container mentioned in the aforementioned technical fields roughly includes a cover and a body. The body is used to hold food that needs to be kept warm or cold, and the body uses vacuum insulation or other technical means to block the internal and external environments. The heat exchange effect. The cover body is combined in a spiral manner and covers the opening of the body; there are many types of cover bodies, and the basic structure generally has an outer cover and an inner plug. Some cover bodies have an outer cover and an inner plug as a whole, and some outer covers The inner plug is detachable through the snap-fit combination. The bottom end of the inner plug also includes a ring-shaped seal made of rubber material. Its main function is to prevent liquid food from seeping out when the heat-preserving container is poured, and to reduce the heat loss of food from the gap between the body and the inner plug. Some covers also include an upper cover that can be combined with or separated from the outer cover. The main purpose of the upper cover is to relieve pressure. When a vacuum phenomenon occurs inside the body and sucks the cover to make it difficult to open, it can be released by removing the upper cover. The purpose of pressing is to smoothly unscrew the cover; another purpose is to remove the upper cover to clean the outer cover and inner plug more comprehensively. Through the cover and the body, the heat preservation container can maintain the temperature of the food for a predetermined period of time.

The disadvantage of the above-mentioned heat preservation container is that the annular seal made of rubber material, due to the material, will easily release chemical components when exposed to overheating and high temperature, and will easily age and lose elasticity when exposed to heat or cold. Shape, resulting in poor sealing effect. In addition, the smell of the ring seal made of rubber material can easily affect the taste of food, and the ring seal itself can easily absorb the taste and color of food (especially dairy products, tea, and coffee), so that Severe odor and discoloration are caused, and cleaning is very difficult. It must be soaked in a neutral detergent for tens of minutes to several hours every day, and carefully scrubbed to maintain cleanness and smell.

In order to solve the above-mentioned problems, the present invention proposes an insulation cover structure that does not use rubber ring seals.

The technical feature of the present invention: a heat-preserving cover structure of a heat-preserving container, comprising: an inner cover, an upper cover, and an inner plug; the inner cover is combined with an outer thread of an opening of a container body by an inner thread, and the inner cover passes through a The combined structure is combined with or separated from the upper cover; the inner plug is made of stainless steel and includes a sealing part and a positioning part, the sealing part is a dish-shaped structure, and the positioning part extends horizontally from the top edge of the sealing part The eaves structure; the positioning portion is limited between the outer top of the inner lid and the inner top of the upper lid, the sealing portion is located in the inner space of the inner lid; the inner lid is combined with the opening of the container body When, the outer wall of the inner plug is in close contact with the inner wall of the opening of the container body; the outer wall of the inner plug and the inner wall of the opening respectively include a straight wedge and a cone wedge, the straight wedge and The tapered wedge portion completely surrounds the outer wall of the inner plug and the inner wall of the opening; when the inner cover is coupled to the opening of the container body, the two straight wedges of the inner plug and the opening fit each other , The two cone wedge portions of the inner plug and the opening are tightly fitted with each other; when the inner plug and the opening are tightly fitted, the top surface of the positioning portion and the inner top of the upper cover, and the fixed There is a gap between the outer edge of the position part and the inner top edge of the upper cover.

Preferably, the combined structure includes an external thread provided on the inner cover and an internal thread provided on the upper cover.

Preferably, the threads used to connect the inner lid and the container body and the threads used to connect the inner lid and the upper lid are in the same direction.

Preferably, the thread used to connect the inner lid and the container body is opposite to the thread used to connect the inner lid and the upper lid.

Preferably, the straight wedge portion is located above the tapered wedge portion, and the top end of the straight wedge portion is connected to the positioning portion.

Preferably, the length ratio of the straight wedge portion to the tapered wedge portion is 1:1 to 1:3.

Preferably, the slope of the tapered wedge portion is 1°-5°, most preferably 1.5°.

In the present invention, an inner plug made of stainless steel is used to replace the traditional rubber material ring-shaped seal, so as to avoid all the problems caused by the rubber material ring-shaped seal.

According to the present invention, when the inner lid is combined with the opening of the container body, the inner plug and the straight wedge portion of the opening fit with each other to guide the inner plug to vertically enter the opening. They are tightly matched with each other to achieve the purpose of preventing liquid food from seeping out and reducing the heat loss of food from the gap between the opening and the inner plug, and the sealing effect is good.

Applying a rotational force to the inner cover can make the heat-preserving cover completely detach from the opening of the heat-preserving body. Based on the taper fit between the inner plug and the opening, the inner cover moves upward along the spiral line. When moving, the inner plug is pushed up to easily detach from the opening in a vertical direction.

The invention has a good sealing effect, but it is easy and labor-saving when the inner cover is unscrewed.

If it is difficult to open the inner lid due to the vacuum inside the container body sucking the inner lid, the upper lid can be loosened slightly to release the vacuum phenomenon and the inner lid can be opened smoothly.

The upper cover, the inner cover, and the inner plug can be separated to facilitate thorough cleaning of the heat preservation cover. The combination of the three is easy, as long as the positioning portion of the inner plug is limited between the outer top of the inner cover and the inner top of the upper cover.

1‧‧‧Container body

11‧‧‧Opening

111‧‧‧Straight wedge

112‧‧‧Cone wedge

12‧‧‧External thread

2‧‧‧Insulation cover

20‧‧‧Inner cover

21‧‧‧Internal thread

22‧‧‧External thread

30‧‧‧Top cover

31‧‧‧Internal thread

40‧‧‧Nese

41‧‧‧Secret Department

411‧‧‧Straight wedge

412‧‧‧Cone Wedge

413‧‧‧Gap

42‧‧‧Positioning Department

H1‧‧‧Straight wedge lengthwise

H2‧‧‧Cone wedge lengthwise

Figure 1 is an external view of the three-dimensional assembly of the present invention.

Figure 2 is an exploded view of the container body and the thermal insulation cover of the present invention.

Figure 3 is an exploded perspective view of the thermal insulation cover of the present invention.

Figure 4 is a cross-sectional view of the container body and the thermal insulation combination of the present invention.

Figure 5 is an enlarged cross-sectional view of the straight wedge portion and the tapered wedge portion when the container body is sealed with the thermal insulation cover of the present invention.

Figure 6 is a schematic cross-sectional view of the present invention unscrewing the heat preservation cover.

Figure 7 is an enlarged cross-sectional view of the straight wedge and the tapered wedge when the heat preservation cover of the present invention is unscrewed.

Figure 8 is a schematic cross-sectional view of the upper cover of the thermal insulation cover of the present invention being screwed away from the inner cover.

In order to facilitate the description of the central idea of the present invention expressed in the column of the above-mentioned summary of the invention, specific embodiments are used to express it. The various objects in the embodiment are drawn according to the proportion, size, deformation or displacement suitable for explanation, rather than drawn according to the proportion of the actual element, which will be described first. In the following description, the same and symmetrically configured elements are represented by the same numbers, and the directional descriptions about up, down, left, right, front, and back are based on the viewing direction, and are not intended to limit the present invention.

As shown in Figures 1 to 3, the heat preservation container of the present invention includes a container body 1 and a heat preservation cover 2. The container body 1 holds food that needs heat preservation or cold preservation, and uses vacuum heat insulation or other technical means to block the internal and external environments. The heat exchange effect.

The thermal insulation cover 2 includes an inner cover 20, an upper cover 30, and an inner plug 40. The inner lid 20 is combined with the outer thread 12 of an opening 11 of a container body 1 with an internal thread 21, and the inner lid 20 is combined with or separated from the upper lid 30 through a combined structure; the combined structure includes the inner lid 20 The external thread 22 and the internal thread 31 provided on the upper cover 30; the thread used to connect the inner cover 20 and the container body 1 and the thread used to connect the inner cover 20 and the upper cover 30 may be in the same direction or Reverse. The inner plug 40 is made of stainless steel and has a sealing portion 41 and a positioning portion 42. The sealing portion 41 has a dish-shaped structure, and the positioning portion 42 is an eave-shaped extending horizontally from the top edge of the sealing portion 41. structure. When the inner cover 20 and the upper cover 30 are combined, the positioning portion 42 is limited between the outer top of the inner cover 20 and the inner top of the upper cover 30, and the sealing portion 41 is provided in the inner space of the inner cover 20. The cross-sectional shape and size of the sealing portion 41 match the cross-sectional shape and size of the opening 11 of the container body 1. When the inner lid 20 is coupled to the opening 11 of the container body 1, the outer wall of the inner plug 40 is in close contact with the inner wall of the opening 11 of the container body 1.

As shown in Figures 4 and 5, the outer wall of the inner plug 40 and the inner wall of the opening 11 of the container body 1 have a structural feature: the entire exterior of the inner plug 40 and the entire inner wall of the opening 11 have a corresponding fit The straight wedge parts 411,111 and the tapered wedge parts 412,112 with an inclination of 1°~5°, the best slope is 1.5°; the straight wedge parts 411,111 are located on the tapered wedge parts 412,112, and the straight wedge part 411 of the inner plug 40 is connected The positioning portion 42; the straight wedge portion 411, 111 and the tapered wedge portion 412, 112 may have a length ratio of H1: H2 = 1:1 to 1:3. When the inner lid 20 is coupled to the opening 11 of the container body 1, the straight wedge portions 411, 111 of the inner plug 40 and the opening 11 are fitted to each other to guide the inner plug 40 to vertically enter the opening 11 In this case, the tapered wedge portions 412 and 112 are tightly fitted with each other to achieve the purpose of preventing liquid food from leaking out and reducing the heat loss of the food from the gap between the opening 11 and the inner plug 40. When the inner plug 40 and the opening 11 are completely fitted, the positioning portion 42 is located between the outer top of the inner cover 20 and the inner top of the upper cover 30, and between the top surface of the positioning portion 42 and the inner top of the upper cover 30, and There is a gap 413 between the outer edge of the positioning portion 42 and the inner top side edge of the upper cover 30.

As shown in Figures 6 and 7, applying a rotational force to the inner cover 20 can make the heat-preserving cover 2 completely detach from the opening 11 of the container body 1. Based on the cone wedge portions 412, 112 of the inner plug 40 and the opening 11 are The slope is matched, so when the inner cover 20 moves upward along the spiral line, the inner plug 40 is pushed up to easily get out of the opening 11 in the vertical direction (similar to the principle of Morse taper). However, the above-mentioned gap 413 is very important because this gap 413 prevents the rotational force of the upper cover 30 and the inner cover 20 from being transmitted to the inner plug 40, because the inner plug 40 and the opening 11 are tightly and statically close to each other with the slope and friction force. Therefore, torque is transmitted to each other (similar to the principle of Morse taper). When opening the heat preservation cover 2, the container body 1 will be held in one hand and the heat preservation cover 2 will be rotated with the other hand. If there is no such gap 413, the upper cover 30 will follow the inner The rotating torque of the cover 20 will transmit the inner plug 40, but the inner plug 40 is limited by the container body 1 being held by hand to resist the torque, which may cause the heat-preserving cover 2 to be difficult or impossible to open.

As shown in Fig. 8, by unscrewing the upper cover 30, the upper cover 30, the inner cover 20, and the inner plug 40 can be separated, so as to clean the heat preservation cover 2 thoroughly.

2‧‧‧Insulation cover

20‧‧‧Inner cover

21‧‧‧Internal thread

22‧‧‧External thread

30‧‧‧Top cover

31‧‧‧Internal thread

40‧‧‧Nese

41‧‧‧Secret Department

411‧‧‧Straight wedge

412‧‧‧Cone Wedge

42‧‧‧Positioning Department

Claims (8)

A heat preservation cover structure of a heat preservation container, comprising: an inner cover, an upper cover, and an inner plug; the inner cover is combined with an inner thread and an outer thread of an opening of a container body, and the inner cover is connected to the upper cover through a combined structure Combine or separate; the inner plug is made of stainless steel and includes a sealing part and a positioning part, the sealing part is a dish-shaped structure, and the positioning part is an eaves-like structure extending horizontally from the top edge of the sealing part; The positioning portion is limited between the outer top of the inner lid and the inner top of the upper lid, and the sealing portion is located in the inner space of the inner lid; when the inner lid is combined with the opening of the container body, the inner plug The outer wall of the container body is in close contact with the inner wall of the opening of the container body; the outer wall of the inner plug and the inner wall of the opening respectively include a straight wedge and a tapered wedge, both of which are Fully surround the outer wall of the inner plug and the inner wall of the opening; when the inner lid is coupled to the opening of the container body, the inner plug and the opening fit with the two straight wedge portions, and the inner plug and The two taper wedges of the opening are tightly fitted with each other; when the inner plug and the opening are tightly fitted, between the top surface of the positioning portion and the inner top of the upper cover, and between the outer edge of the positioning portion and the inner top of the upper cover There are gaps between the top side edges. The thermal insulation cover structure of the thermal insulation container according to claim 1, wherein the combined structure includes an external thread provided on the inner cover and an internal thread provided on the upper cover. The heat-preserving cover structure of the heat-preserving container according to claim 1, wherein the thread used to connect the inner cover and the container body and the thread used to connect the inner cover and the upper cover are in the same direction. The heat preservation cover structure of the heat preservation container according to claim 1, wherein the thread used to connect the inner cover and the container body is opposite to the thread used to connect the inner cover and the upper cover. The thermal insulation cover structure of the thermal insulation container according to claim 1, wherein the straight wedge portion is located on the tapered wedge portion, and the top end of the straight wedge portion is connected to the positioning portion. The thermal insulation cover structure of the thermal insulation container according to claim 1, wherein the length ratio of the straight wedge portion and the tapered wedge portion is 1:1 to 1:3. The thermal insulation cover structure of the thermal insulation container according to claim 1, wherein the inclination of the tapered wedge portion is 1°~5°. The thermal insulation cover structure of the thermal insulation container according to claim 7, wherein the inclination of the wedge portion is 1.5°.

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