Vacuum composite vacuum cup

Abstract

The utility model provides a vacuum composite vacuum cup, including shell and inner bag, the shell and inner bag between form a sealed vacuum cavity, the bottom of shell is provided with the vacuum hole, and the lower extreme of inner bag sets up in the shell, and the upper extreme of inner bag is provided with the first welding platform of outward convex, and the first welding platform is contacted with the top of shell, and the first welding platform and the top of shell are welded through laser welding, and the outer side wall below the first welding platform of inner bag is provided with the first accommodating groove, and the first accommodating groove and the inner side wall of shell are provided with the sealing ring, and the shell and inner bag adopt the plastic or silica gel material to make, and the cup body structure is simple and stable, and the heat preservation performance is good.

Description

Technical Field

[0001] This utility model relates to the field of thermos cups, specifically to a vacuum composite thermos cup. Background Technology

[0002] In the current thermos industry, insulation is generally achieved by creating a vacuum space. The inner and outer liner of the thermos are usually fixed and sealed by spot welding. This process has a high rate of welding defects. Poor welding leads to a low overall yield of the thermos, making it prone to damage during use and causing air leakage. This significantly reduces the insulation performance, especially when the welding process is poor, the vacuum layer will gradually fail over time.

[0003] For example, patent document with patent application number CN202110850750.8 and publication date of June 17, 2022 discloses a process for producing an irregularly shaped double-layer metal vacuum insulated cup, including the following steps: (1) making the outer shell, the mouth of the outer shell, the bottom of the outer shell and the inner liner of the cup respectively, wherein the outer shell is an irregularly shaped metal shell structure that is not perfectly circular and has openings at both the top and bottom, the mouth of the outer shell is a circular metal shell structure that has openings at both the top and bottom, the lower outer side of the mouth of the outer shell has a first annular step portion that matches the shape of the outer shell, the bottom of the outer shell is a circular metal shell structure that is open at the top and closed at the bottom, the upper outer side of the bottom of the outer shell has a second annular step portion that matches the shape of the outer shell, and the inner liner of the cup is a circular metal shell structure that is open at the top and closed at the bottom and has a constricted mouth at the top; (2) welding the outer side of the first annular step portion at the bottom of the outer shell to the upper end of the outer shell along the circumferential direction using a welding device.

[0004] This thermos cup is made by machining and welding multiple parts. Existing thermos cups are generally made of stainless steel. However, stainless steel thermos cups are heavy, making them inconvenient to carry. In addition, the need for machining and welding to achieve a two-layer structure results in a relatively complex overall structure. Since the top and bottom ends of the thermos cup need to be welded, the stainless steel will rust after welding, especially when the cup is wet. This may lead to poor sealing of the vacuum layer after welding. Utility Model Content

[0005] This invention provides a vacuum composite thermos cup that can ensure the heat preservation performance of the cup body while simplifying the structure of the connecting parts, making it easier to produce and reducing costs.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a vacuum composite thermos cup, comprising an outer shell and an inner liner, wherein a sealed vacuum cavity is formed between the outer shell and the inner liner, a vacuum hole is provided at the bottom of the outer shell, the lower end of the inner liner is disposed inside the outer shell, and a first welding platform protruding outward is provided at the upper end of the inner liner, the first welding platform is in contact with the top of the outer shell, and the first welding platform and the top of the outer shell are welded by laser welding, a first receiving groove is provided on the outer side wall of the inner liner below the first welding platform, a sealing ring is provided between the first receiving groove and the inner side wall of the outer shell, and the inner liner and the outer shell are made of plastic or silicone material.

[0007] The above setup achieves a sealed connection by using a first welding station to contact the top of the outer shell and the inner liner at their upper ends, followed by laser welding. The outward protrusion of the first welding station lengthens the sealing path between the inner liner and the outer shell, resulting in better sealing. After laser welding, a sealing ring is used for a second seal, further ensuring the sealing effect. Since the inner liner and the outer shell are made of plastic, the overall cost of the thermos is lower and the weight is lighter. The plastic inner liner, with its sealing ring, provides a better seal, ensuring a superior sealing effect.

[0008] Furthermore, the outer wall at the upper end of the inner liner is provided with threads.

[0009] The above design, with threads at the top of the inner liner, facilitates the connection of the cup lid.

[0010] Furthermore, the first welding station is arranged circumferentially along the outer side wall of the inner liner and protrudes outward along the radial direction of the outer side wall of the inner liner.

[0011] The above configuration, by setting the first welding platform to protrude outward, can form a contact surface with the outer shell, thus ensuring reliable connection.

[0012] Furthermore, the first receiving groove is recessed from the outer wall of the inner liner towards the center of the inner liner.

[0013] The above configuration, with the first receiving groove recessed towards the center of the inner liner, allows the first receiving groove to be positioned along the outer periphery of the inner liner, thus facilitating the accommodating of the sealing ring.

[0014] Furthermore, after the sealing ring is placed in the first receiving groove, the sealing ring protrudes from the first receiving groove.

[0015] The above design allows the sealing ring to be accommodated in the first receiving groove and blocks the gap between the inner liner and the outer shell, ensuring a sealing effect.

[0016] Furthermore, the sealing ring is a rubber or silicone sealing ring.

[0017] The above setup uses rubber or silicone sealing rings, which are low in cost and simple in structure.

[0018] Furthermore, the vacuum hole is sealed by a sealing component; the sealing component is a sealing plug with a through hole at the top, and a plugging post is provided on the through hole, and the vacuum hole is connected to the through hole.

[0019] The above setup, by using a sealing plug, allows the through hole to communicate with the vacuum hole, simplifying the operation steps after vacuuming and ensuring the reliability of the seal.

[0020] Furthermore, the lower end of the first receiving groove abuts against the inner wall of the outer shell, and the outer wall of the inner liner located at the lower end of the first receiving groove extends inward and downward.

[0021] The above configuration ensures a tight seal between the inner liner and the outer shell by having the outer side wall of the lower end of the first receiving groove abut against the inner side wall of the outer shell. In addition, the outer side wall of the inner liner extends inward and downward to increase the volume of the vacuum chamber. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the inner liner and outer shell structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the bottom structure of the inner liner and outer shell of this utility model.

[0024] Figure 3 This is a front view of the inner liner and outer shell of this utility model.

[0025] Figure 4 This is a schematic diagram of the bottom sealing rubber plug of the inner liner and outer shell of this utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the rubber ring in this utility model.

[0027] Figure 6 This is a schematic diagram of the inner liner in this utility model.

[0028] Figure 7 This is a schematic diagram of the inner liner structure after the sealing ring is removed.

[0029] Figure 8 This is a side view of the inner liner and outer shell of this utility model.

[0030] Figure 9 for Figure 8 Sectional view of AA.

[0031] Figure 10 for Figure 9 Enlarged view of section B in the middle.

[0032] Figure 11 This is an exploded view of the inner liner and outer shell of this utility model.

[0033] Explanation of icon numbers: 1-Outer shell; 1001-Vacuum hole; 2-Inner liner; 2001-Sealing ring; 2002-Thread; 2003-Groove; 2004-First welding boss; 3-Sealing plug; 3002-Through hole; 3003-Vacuum hole. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 11 As shown, a vacuum composite thermos cup includes an outer shell 1 and an inner liner 2. The top outer side of the inner liner 2 is provided with a thread 2002. A cup lid (not shown in the figure) is provided at the upper end of the inner liner 2 by a threaded connection. The lower end of the inner liner 2 is located inside the outer shell 1, and the upper end of the inner liner 2 is provided with an outwardly protruding first welding platform 2004. The first welding platform 2004 contacts the top of the outer shell 1, and the first welding platform 2004 and the top of the outer shell 1 are welded by laser welding. A first receiving groove 2003 is provided on the outer side wall of the inner liner 2 below the first welding platform 2004. A sealing ring 2001 is provided between the first receiving groove 2003 and the inner side wall of the outer shell 1. The inner liner 2 and the outer shell 1 are made of plastic or silicone material.

[0036] A sealed vacuum cavity is formed between the outer shell 1 and the inner liner 2, which eliminates both heat conduction and heat convection in the vacuum layer of the thermos, slowing down the rate of temperature change of the liquid inside the thermos. A vacuum hole 3003 is provided at the bottom of the outer shell 1 to remove the air between the inner liner 2 and the outer shell 1 during the manufacturing process.

[0037] like Figure 6 and Figure 7 As shown, the first welding station 2004 is located below the thread 2002, and is arranged circumferentially along the outer side wall of the inner liner 2 and protrudes outward along the radial direction of the outer side wall of the inner liner 2.

[0038] like Figures 5 to 7As shown, a first receiving groove 2003 is provided below the first welding station 2004. A sealing ring 2001 is provided in the first receiving groove 2003. The sealing ring 2001 is a rubber or silicone sealing ring, which ensures the elasticity and weather resistance of the sealing part. The first receiving groove 2003 and the sealing ring 2001 are interference fit, so that the sealing ring 2001 is embedded in the first receiving groove 2003 and has a slight protrusion. The protrusion of the sealing ring 2001 makes the fit between the outer shell 1 and the inner liner 2 tighter, further ensuring the sealing performance. The lower end of the first receiving groove 2003 abuts against the inner side wall of the outer shell 1, and the outer side wall of the inner liner 2 located at the lower end of the first receiving groove 2003 extends inward and downward.

[0039] like Figure 2 and Figure 4 As shown, the bottom of the outer shell 1 is provided with a vacuum hole 3003, which is sealed by a sealing component, namely a sealing plug 3. The top of the sealing plug 3 is provided with a through hole 3002, which communicates with the vacuum hole 3003. A sealing post (not shown in the figure) is provided on the through hole 3002. During processing, the air in the vacuum layer is discharged through the vacuum hole 3003. After the air is discharged, the through hole 3002 is sealed to keep the thermos cup airtight. The sealing plug 3 is located in a non-central position at the bottom of the outer shell 1 and is fixed in the vacuum hole 3003 by interference fit, thereby making the vacuum layer more airtight and ensuring the heat preservation performance of the thermos cup.

[0040] The working principle of this utility model is as follows: the upper ends of the outer shell 1 and the inner liner 2 are connected to the top of the outer shell through a first welding station 2004 and then sealed by laser welding. The first welding station 2004 is set to protrude outward, thereby lengthening the sealing path between the inner liner 2 and the outer shell 1, resulting in better sealing. After laser welding, the sealing ring 2001 is used for resealing, which further ensures the sealing effect. Since the inner liner 2 and the outer shell 1 are made of plastic material, the cost of the entire thermos cup is lower and the weight is lighter. The plastic inner liner can achieve a better seal through the sealing ring, ensuring the sealing effect.

Claims

1. A vacuum composite thermos cup, comprising an outer shell and an inner liner, wherein a sealed vacuum cavity is formed between the outer shell and the inner liner, and a vacuum extraction hole is provided at the bottom of the outer shell, characterized in that: The lower end of the inner liner is located inside the outer shell, and the upper end of the inner liner is provided with a first welding platform that protrudes outward. The first welding platform is in contact with the top of the outer shell, and the first welding platform and the top of the outer shell are welded by laser welding. The outer side wall of the inner liner located below the first welding platform is provided with a first receiving groove. A sealing ring is provided between the first receiving groove and the inner side wall of the outer shell. The inner liner and the outer shell are made of plastic material.

2. The vacuum composite thermos cup according to claim 1, characterized in that: The outer wall at the upper end of the inner liner is provided with threads.

3. The vacuum composite thermos cup according to claim 1, characterized in that: The first welding station is arranged circumferentially along the outer side wall of the inner liner and protrudes outward along the radial direction of the outer side wall of the inner liner.

4. A vacuum composite thermos cup according to claim 1, characterized in that: The first receiving groove is recessed from the outer wall of the inner liner towards the center of the inner liner.

5. A vacuum composite thermos cup according to claim 1, characterized in that: After the sealing ring is placed in the first receiving groove, the sealing ring protrudes out of the first receiving groove.

6. A vacuum composite thermos cup according to claim 1, characterized in that: The sealing ring is a rubber or silicone sealing ring.

7. A vacuum composite thermos cup according to claim 1, characterized in that: The vacuum hole is sealed by a sealing component, which is a sealing plug with a through hole at the top and a vacuum hole at the bottom.

8. A vacuum composite thermos cup according to claim 1, characterized in that: The lower end of the first receiving groove abuts against the inner wall of the outer shell, and the outer wall of the inner liner located at the lower end of the first receiving groove extends inward and downward.

Images