TWI681746B - Thermal insulation cover structure of thermal insulation container - Google Patents

Abstract

An insulation cover structure of an insulation container includes: an inner cover, an upper cover, and an inner plug; the upper cover and the inner cover are combined by threads, and the inner plug is positioned so that the inner plug is located inside the inner cover; the inner The plug is made of stainless steel. When the inner cap is combined with the opening of the container body, the outer wall of the inner plug and the inner wall of the opening of the container body are in close contact with the straight wedge portion and the tapered wedge portion to reach the leakage stop 1. The purpose of preventing hot air leakage and prolonging the insulation effect. With the design of the straight wedge portion and the tapered wedge portion, the thermal insulation cover of the present invention has a good sealing effect, but it is easy and labor-saving when unscrewing the inner cover. In addition, the inner plug of the present invention completely avoids various problems caused by the conventional rubber ring seal.

Description

Thermal insulation cover structure of thermal insulation container

The invention relates to a heat-insulating container heat-insulating cover sealing structure. The heat preservation container includes but is not limited to a heat preservation cup, a heat preservation bottle, a heat preservation tank, a heat preservation barrel, a heat preservation pot, an accompanying heat preservation pot, etc., which need to be kept warm, sealed, and leak-proof.

The heat preservation container mentioned in the aforementioned technical field generally includes two parts: a cover body and a body. The body is used to hold food that needs to be kept warm or cold. The body uses vacuum insulation or other technical means to block the internal and external environments. Heat exchange. The cover is screwed together and covers the opening of the body; there are many types of cover, the basic structure is generally equipped with an outer cover and an inner plug, some of the cover is integrated with the inner plug, and some outer cover It is separable with the inner plug by snap-fit. The bottom end of the inner plug also includes an annular seal made of rubber material. Its main function is to prevent liquid food from seeping out when the thermal insulation container is dumped, and to reduce the loss of hot air 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 the cover is sucked to make it difficult to open, the cover can be removed by removing the upper cover. Press the purpose to unscrew the cover smoothly; another purpose is to disassemble the upper cover to clean the outer cover and inner plug more comprehensively. Through the cover body and the body, the thermal insulation container can maintain the temperature of the food for a predetermined period of time.

The disadvantage of the above heat preservation container is the ring-shaped seal made of rubber material. Due to the material, it will easily release chemical components when it is overheated and high temperature, and it will easily age and lose its elasticity when it is repeatedly exposed to heat or cold. Shape, resulting in poor sealing effect. In addition to this, the odor of the ring seal made of rubber material easily affects 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 There are serious odor and discoloration problems, and it is very difficult to clean. It must be soaked in neutral detergent for tens of minutes to several hours every day, and carefully brushed to keep it clean and odor.

In order to solve the above problems, the present invention proposes a heat-insulating cover structure that does not use rubber ring seals.

Technical features of the present invention: An insulation cover structure for an insulation container includes: an inner cover, an upper cover, and an inner plug; the inner cover is combined with an external thread of an opening of an opening of a container body, 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 portion and a positioning portion, the sealing portion is in the shape of a dish, and the positioning portion extends horizontally outward from the top edge of the sealing portion Eaves-like structure; the positioning part is limited between the outer top of the inner lid and the inner top of the upper lid, the sealing part is located in the inner space of the inner lid; the inner lid is coupled to 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 include a straight wedge portion and a tapered wedge portion, the straight wedge portion and The tapered wedge portion completely surrounds the outer wall of the inner plug and the inner wall of the opening; when the inner cap is coupled to the opening of the container body, the two straight wedges of the inner plug and the opening fit with each other , The two taper wedges of the inner plug and the opening are tightly fitted with each other; when the inner plug and the opening are closely fitted, between 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 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 join the inner lid and the container body are in the same direction as the threads used to join the inner lid and the upper lid.

Preferably, the thread used to join the inner lid and the container body and the thread used to join the inner lid and the upper lid are reversed.

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 1:1~1:3.

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

The invention replaces the traditional rubber material ring seal with a stainless steel inner plug, which avoids all the problems caused by the rubber material ring seal.

According to the present invention, when the inner cap is coupled to the opening of the container body, the inner plug and the straight wedge of the opening fit together to guide the inner plug to enter the opening vertically, and the tapered wedge Then, they closely cooperate with each other to prevent the leakage of liquid food and reduce the loss of hot gas from the gap between the opening and the inner plug, and the sealing effect is good.

Applying a rotating force to the inner cover can make the thermal insulation cover completely disengage from the opening of the thermal insulation body, because the tapered wedges of the inner plug and the opening are tapered, so when the inner cover goes up along the spiral line When moving, the inner plug is pushed up to easily escape from the opening in the vertical direction.

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

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

The upper cover, the inner cover, and the inner plug can be separated to facilitate the thorough washing of the insulation 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‧‧‧Male thread

2‧‧‧Insulation cover

20‧‧‧Inner cover

21‧‧‧ female thread

22‧‧‧Male thread

30‧‧‧Top cover

31‧‧‧ female thread

40‧‧‧Nese

41‧‧‧Secretary Department

411‧‧‧Straight wedge

412‧‧‧Cone wedge

413‧‧‧Gap

42‧‧‧Positioning Department

H1‧‧‧Straight wedge length

H2‧‧‧Conical wedge length

Figure 1 is a perspective view of the three-dimensional combination of the present invention.

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

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

Figure 4 is a sectional view of the container body and heat preservation combination of the present invention.

Fig. 5 is an enlarged cross-sectional view of the straight wedge portion and the tapered wedge portion when the thermal insulation lid of the present invention seals the container body.

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

Fig. 7 is an enlarged cross-sectional view of the straight wedge portion and the tapered wedge portion when the thermal insulation 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 unscrewed from the inner cover.

In order to facilitate the description of the central idea of the present invention in the column of the above summary of the invention, it is expressed in a specific embodiment. In the embodiments, various objects are drawn according to the proportion, size, deformation or displacement suitable for description, rather than drawn according to the proportion of actual elements, which will be described first. In the following description, the elements with the same and symmetrical configuration are denoted by the same number. The directional descriptions of up, down, left, right, front, and back are based on the view direction, and are not intended to limit the present invention.

As shown in Figures 1 to 3, the thermal insulation container of the present invention includes a container body 1 and a thermal insulation cover 2, the container body 1 contains food that needs to be kept warm or cold, and uses a vacuum insulation or other technical means to block the internal and external environments Heat exchange.

The thermal insulation cover 2 includes an inner cover 20, an upper cover 30, and an inner plug 40. The inner cover 20 is combined with the outer thread 12 of an opening 11 of a container body 1 by an internal thread 21. The inner cover 20 is combined with or separated from the upper cover 30 by a combined structure; the combined structure includes a The external thread 22 and the internal thread 31 provided on the upper cover 30; the thread used to join the inner cover 20 and the container body 1 and the thread used to join 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. The positioning portion 42 is an eave shape extending horizontally outward 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 FIGS. 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 corresponding The straight wedge portion 411,111 and the tapered wedge portion 412,112 with a slope of 1°~5°, the optimal slope is 1.5°; the straight wedge portion 411,111 is located above the tapered wedge portion 412,112, and the straight wedge portion 411 of the inner plug 40 is connected The length ratio of the positioning portion 42; the straight wedge portions 411, 111 and the tapered wedge portions 412, 112 may be H1:H2=1:1:1~1:3. When the inner lid 20 is coupled to the opening 11 of the container body 1, the straight plugs 411, 111 of the inner plug 40 and the opening 11 fit each other to guide the inner plug 40 into the opening vertically 11 In this case, the tapered wedges 412, 112 are tightly fitted with each other to prevent the leakage of liquid food and reduce the loss of hot air from the gap between the opening 11 and the inner plug 40. When the inner plug 40 completely fits the opening 11, 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 edge of the upper cover 30.

As shown in Figs. 6 and 7, applying a rotational force to the inner lid 20 can make the thermal insulation lid 2 completely disengage from the opening 11 of the container body 1. Based on the tapered wedges 412, 112 of both the inner plug 40 and the opening 11 are The slope fits, so when the inner cover 20 moves upward along the spiral line, the inner plug 40 is pushed up to easily escape from the opening 11 in a vertical direction (similar to the Morse taper principle). 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 closely and quietly inclined with each other by the slope and friction Cooperate, so they will transmit torque to each other (similar to the Morse taper principle), and when opening the insulation cover 2, one hand will hold the container body 1 and the other hand will rotate the insulation cover 2, if there is no gap 413 above, the upper cover 30 follows The rotation torque of the cover 20 will transmit the inner plug 40, however, the inner plug 40 is limited by the container body 1 being fixed by the hand to resist the torque, which may cause the thermal insulation cover 2 to be difficult or impossible to be opened.

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 to facilitate the thorough cleaning of the thermal insulation cover 2.

2‧‧‧Insulation cover

20‧‧‧Inner cover

21‧‧‧ female thread

22‧‧‧Male thread

30‧‧‧Top cover

31‧‧‧ female thread

40‧‧‧Nese

41‧‧‧Secretary Department

411‧‧‧Straight wedge

412‧‧‧Cone wedge

42‧‧‧Positioning Department

Claims (8)

An insulation cover structure of an insulation container includes: 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 internal thread, and the inner cover is connected to the upper cover through a combined structure Combined or separated; the inner plug is made of stainless steel, including a sealing portion and a positioning portion, the sealing portion is a dish-shaped structure, the positioning portion is an eaves-shaped structure extending horizontally outward from the top edge of the sealing portion; The positioning part is limited between the outer top of the inner lid and the inner top of the upper lid, the sealing part is located in the inner space of the inner lid; when the inner lid is coupled to the opening of the container body, the inner plug The outer wall of the container 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, the straight wedge and the tapered wedge are both Fully surrounding the outer wall of the inner plug and the inner wall of the opening; when the inner cap is coupled to the opening of the container body, the two straight wedges of the inner plug and the opening fit each other, the inner plug and The two tapered wedges of the openings are tightly fitted with each other; when the inner plug closely fits the openings, between the top surface of the positioning portion and the inner top of the upper cover, and the outer edge of the positioning portion and the upper cover There is a gap 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-insulating lid structure of the heat-insulating container according to claim 1, wherein the screw thread for coupling the inner lid and the container body and the screw thread for coupling the inner lid and the upper lid are in the same direction. The heat-insulating lid structure of the heat-insulating container according to claim 1, wherein the threads for coupling the inner lid and the container body and the threads for coupling the inner lid and the upper lid are reversed. The insulation cover structure of the heat preservation container according to claim 1, wherein 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. The thermal insulation cover structure of the thermal insulation container according to claim 1, wherein the length ratio of the straight wedge portion to 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 slope of the tapered wedge portion is 1° to 5°. The thermal insulation cover structure of the thermal insulation container according to claim 7, wherein the inclination of the tapered wedge portion is 1.5°.

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