Food storage cup

Abstract

This utility model discloses a food preservation cup, comprising: a cup body, including an upper cup cylinder and a lower cup cylinder connected vertically; the outer wall of the lower cup cylinder has a concave area, which is concave relative to the outer wall of the upper cup cylinder; the junction of the outer wall of the upper cup cylinder and the concave area forms a handle step, which extends circumferentially along the cup body and is used for the thumb and forefinger of the human hand to rest against; the concave area is provided with anti-slip texture; and a cup lid, which is unclamped onto the mouth of the cup body. The cup lid includes a lid body and a vacuum valve; the lid body is sealed onto the mouth of the cup body and has an air extraction hole that communicates with the cavity of the cup body; the vacuum valve is located at the air extraction hole and is used to open or close the air extraction hole. This utility model's food preservation cup creates a natural gripping space for the thumb and forefinger and increases the coefficient of friction through the anti-slip texture of the concave area, allowing users to pick up the food preservation cup more conveniently and stably, thereby improving the handheld convenience and stability of the food preservation cup.

Description

Technical Field

[0001] This utility model relates to the field of food preservation cup technology, and in particular to a food preservation cup. Background Technology

[0002] Vacuum food storage cups are widely used in modern life. However, the outer surface of these cups is relatively slippery, making them inconvenient for users to hold. Utility Model Content

[0003] The main purpose of this utility model is to propose a food preservation cup that aims to solve the technical problem of how to improve the ease of holding the food preservation cup.

[0004] To achieve the above objectives, the food preservation cup proposed in this utility model includes:

[0005] The cup body includes an upper cup cylinder and a lower cup cylinder connected vertically. The outer wall surface of the lower cup cylinder has a concave area, which is concave relative to the outer wall surface of the upper cup cylinder. A handle step is formed at the junction of the outer wall surface of the upper cup cylinder and the concave area. The handle step extends along the circumference of the cup body and is used for the thumb and forefinger of the human hand to rest against. The concave area is provided with anti-slip texture.

[0006] A cup lid, which can be opened and placed over the mouth of the cup body, the cup lid includes a lid body and a vacuum valve, the lid body is sealed over the mouth of the cup body, the lid body has an air extraction hole, the air extraction hole is connected to the cavity of the cup body, and the vacuum valve is located at the air extraction hole to open or close the air extraction hole.

[0007] Optionally, the step surface of the handrail step is inclined downwards.

[0008] Optionally, the anti-slip texture extends along the height direction of the cup body, and there are multiple anti-slip textures distributed circumferentially along the cup body.

[0009] Optionally, the height of the lower cup is greater than the height of the upper cup, and the width of the lower cup decreases from top to bottom.

[0010] Optionally, the food preservation cup also includes a handle connected to the upper cup cylinder.

[0011] Optionally, the lid includes a cap and an inner cap cylinder, the inner cap cylinder protruding inside the cap, the lower end of the inner cap cylinder extending beyond the lower end of the cap, and the cup lid also includes a sealing ring, the sealing ring being fitted onto the portion of the inner cap cylinder extending beyond the cap, and the lower periphery of the cap pressing the sealing ring against the periphery of the cup mouth of the cup body.

[0012] Optionally, the sealing ring includes a main body, an inserting part, and a first sealing tongue. The main body is sleeved on the inner cover cylinder, the inserting part protrudes from the top of the main body, and the first sealing tongue protrudes from the peripheral wall of the main body.

[0013] An installation gap is formed between the inner cover cylinder and the surrounding wall of the cap. A snap-fit ​​rib is provided in the installation gap. The snap-fit ​​rib has a groove. The snap-fit ​​part extends into the installation gap and is embedded in the groove. The first sealing tongue abuts against the lower periphery of the cap.

[0014] Optionally, the sealing ring further includes a second sealing tongue, which protrudes from the peripheral wall of the main body and is located below the first sealing tongue. The peripheral edge of the second sealing tongue away from the main body is in sealing contact with the inner wall surface of the cup.

[0015] Optionally, the vacuum valve includes a valve body and a sealing edge. The valve body passes through the air extraction hole, with both ends of the valve body extending out of the upper and lower ends of the air extraction hole, respectively. The sealing edge protrudes from the upper peripheral wall of the valve body and is used to close the periphery of the air extraction hole when it abuts against the cover and to open the periphery of the air extraction hole when it moves away from the cover. The peripheral wall of the valve body abuts against the hole wall of the air extraction hole. An air passage groove is formed on the peripheral wall of the valve body below the sealing edge. One end of the air passage groove is close to the sealing edge, and the other end extends toward the bottom of the valve body. The length of the air passage groove is greater than the depth of the air extraction hole.

[0016] Optionally, the number of air vents is at least two, and the at least two air vents are arranged at circumferential intervals along the valve body.

[0017] In this invention, the food preservation cup is divided into an upper cup cylinder and a lower cup cylinder that are connected vertically. A concave area is formed on the outer wall of the lower cup cylinder, creating a hand-holding step that surrounds at least part of the cup body. This step structure utilizes ergonomic principles, providing precise support for the hand's grip through a circumferentially extending step surface. Combined with the anti-slip texture in the concave area, a double anti-slip mechanism is formed. The step structure, created by the difference in diameter between the upper and lower cup cylinders, not only creates a natural gripping space for the hand but also increases the coefficient of friction through the anti-slip texture in the concave area, allowing users to pick up the food preservation cup more easily and stably. This improves the convenience and stability of holding the food preservation cup. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the food preservation cup of this utility model;

[0020] Figure 2 This is a schematic diagram of an embodiment of the food preservation cup of this utility model;

[0021] Figure 3 This is a structural cross-sectional view of an embodiment of the food preservation cup of this utility model;

[0022] Figure 4 This is a structural disassembly diagram of an embodiment of the cup lid of this utility model;

[0023] Figure 5 This is a cross-sectional schematic diagram of an embodiment of the cup lid of this utility model;

[0024] Figure 6 This is a schematic diagram of another embodiment of the food preservation cup of this utility model.

[0025] Explanation of icon numbers:

[0026] label name label name label name 10 Cup body 11 Cup holder 12 Lower cup cone 121 concave area 13 Stuck in the step 14 Anti-slip texture 20 Cup lid 21 Cover 22 vacuum valve 211 Air extraction port 30 handle 23 Caps 24 Inner cover tube 25 sealing ring 251 Main body 252 Engagement part 253 First sealing tongue 254 Second sealing tongue 221 Valve body 222 Sealing edge 223 air duct

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] Vacuum food storage cups are widely used in modern life. However, the outer surface of these cups is relatively slippery, making them inconvenient for users to hold.

[0032] This utility model proposes a food preservation cup, aiming to solve the technical problem of how to improve the hand-holding convenience of the food preservation cup.

[0033] In the embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the food preservation cup includes: a cup body 10, which includes an upper cup cylinder 11 and a lower cup cylinder 12 connected vertically. The outer wall surface of the lower cup cylinder 12 has a concave area 121, which is concave relative to the outer wall surface of the upper cup cylinder 11. A handle step 13 is formed at the junction of the outer wall surface of the upper cup cylinder 11 and the concave area 121. The handle step 13 extends circumferentially along the cup body 10 and is used to provide a support for the thumb and forefinger of the human hand. Next, the concave area 121 is provided with anti-slip texture 14; cup lid 20, the cup lid 20 is detachably covered on the mouth of the cup body 10, the cup lid 20 includes a lid body 21 and a vacuum valve 22, the lid body 21 is sealed on the mouth of the cup body 10, the lid body 21 has an air extraction hole 211, the air extraction hole 211 is connected to the cavity of the cup body 10, and the vacuum valve 22 is provided on the air extraction hole 211 to open or close the air extraction hole 211.

[0034] In this embodiment, the cross-section of the cup body 10 can be circular. The cup body 10 is composed of two cylindrical bodies of different diameters connected vertically. The difference in diameter between the upper cup cylinder 11 and the lower cup cylinder 12 forms a stepped transition structure, which can be achieved by injection molding or metal stretching process. This structure provides a natural locking space for the tiger's mouth.

[0035] The concave area 121 on the outer wall of the lower cup cylinder 12 refers to the local concavity on the outer surface of the lower cup cylinder 12 forming an annular groove area, which can be achieved by molding or surface processing. This concave area 121 reduces the surface curvature of the gripping part to fit the curvature of the palm.

[0036] The concave area 121 is concave relative to the outer wall of the upper cup cylinder 11, meaning that the outer diameter of the lower cup cylinder 12 is smaller than the outer diameter of the upper cup cylinder 11, forming a stepped drop. This can be achieved through a stepped cylinder structure, and the drop forms a vertical limiting structure for the tiger's mouth support surface.

[0037] The extension of the hand-holding step 13 along the circumference of the cup body 10 means that the step surface surrounds the cup body 10 at least half a circumference to form a continuous annular flange. Specifically, this can be achieved through an annular protrusion or a chamfered structure, which provides uniform force support for the entire circumference of the hand-holding area.

[0038] The anti-slip texture 14 is set in the concave area 121, which means that linear raised or recessed textures are processed on the concave surface. Specifically, it can be achieved by longitudinal stripes, grid patterns or dot-shaped raised patterns. This texture prevents the hand from slipping by increasing the coefficient of friction.

[0039] The lid 20 is foldably placed over the mouth of the cup body 10. The lid 21 seals tightly against the cup body 10, preventing the internal air of the food preservation cup from communicating with the outside. The vacuum valve 22 opens or closes the suction port 211, which is connected to the air environment inside the food preservation cup. Users can use a vacuum device to extract air from the food preservation cup through the suction port 211. After the air is removed, the vacuum valve 22 closes the suction port 211 under external air pressure, maintaining a vacuum inside the food preservation cup. This extends the shelf life of food or beverages inside the cup and prevents them from spoiling easily. When it is necessary to open the lid 20, the vacuum inside the food preservation cup must first be broken. This can be done by applying force to the vacuum valve 22 to open the suction port 211, allowing external airflow to enter the food preservation cup through the suction port 211, thus breaking the vacuum and making it easier for the user to open the lid 20.

[0040] The cup body 10 is divided into an upper cup cylinder 11 and a lower cup cylinder 12 that are connected vertically. A concave area relative to the upper cup cylinder 11 is formed on the outer wall of the lower cup cylinder 12, creating a hand-holding step 13 that surrounds at least a portion of the cup body 10. This step structure utilizes ergonomic principles, providing precise support for the hand through a circumferentially extending step surface. Combined with the anti-slip texture 14 in the concave area 121, a double anti-slip mechanism is formed. The step structure, created by the difference in diameter between the upper and lower cup cylinders 11 and 12, not only creates a natural hand-holding space but also increases the coefficient of friction through the anti-slip texture 14 in the concave area 121, allowing users to pick up the food storage cup more easily and stably. This improves the convenience and stability of holding the food storage cup.

[0041] In some of the solutions mentioned above in this application, a hand-holding step 13 is proposed for the web of the human hand to rest against in order to improve grip stability. However, if the step surface of the hand-holding step 13 is designed to be horizontal or not in a specific inclined direction, it may cause the contact surface angle to be mismatched when the web of the hand rests against the step, affecting grip comfort and anti-slip effect. There is a defect that the hand is easy to slip off due to the unreasonable force direction of the step surface.

[0042] Specifically, such as Figure 2 As shown, the step surface of the handle step 13 is inclined downwards. The inclination angle of the step surface can be set to 15-45 degrees, for example, 30 degrees, to accommodate the natural bending angle of the thumb and forefinger. The inclination direction forms an angle with the height direction of the cup body 10, so that the step surface extends from the outer wall of the upper cup cylinder 11 to the outer wall of the lower cup cylinder 12. The inclination angle of the step surface intersects with the distribution direction of the anti-slip texture 14. For example, the anti-slip texture 14 extends vertically along the height direction of the cup body 10, and the inclined step surface and the anti-slip texture 14 form an intersection angle of 30-60 degrees, thereby generating multi-directional anti-slip resistance on the contact surface. Therefore, when the user holds the food preservation cup, the thumb and forefinger of the hand can naturally fit against the inclined step surface, forming a tighter and more stable contact.

[0043] For example, such as Figure 1 and Figure 2 As shown, the anti-slip texture 14 extends along the height direction of the cup body 10, and there are multiple anti-slip textures 14, which are distributed around the circumference of the cup body 10.

[0044] The anti-slip texture 14 extends in height and can cover 50%-90% of the total height of the concave area 121. The number of circumferentially distributed anti-slip textures 14 can be 6-12, with the spacing between adjacent anti-slip textures 14 controlled within the range of 2-5 mm. The cross-sectional shape of the anti-slip texture 14 can be a V-shaped or U-shaped groove with a depth of 0.3-1.2 mm. The extension direction of the anti-slip texture 14 forms an orthogonal layout with the extension direction of the hand-holding step 13. When the web of the hand abuts against the hand-holding step 13, the natural area of ​​the fingers covers the circumferentially distributed anti-slip texture 14. When the anti-slip texture 14 extends along the height direction, its longitudinal groove structure generates continuous frictional resistance with the longitudinal contact surface of the fingers when the cup body 10 is held vertically. This resistance direction is perpendicular to the longitudinal gripping force applied by the hand, effectively preventing the cup body 10 from slipping.

[0045] Multiple circumferentially distributed anti-slip patterns 14 form a ring array. When the cup body 10 is rotated and held, the hand contact area is covered by at least 3-5 anti-slip patterns 14. The lateral friction generated by each anti-slip pattern 14 forms a resultant force, inhibiting the circumferential sliding of the cup body 10. The dense arrangement of the anti-slip patterns 14 creates a micro-convex-concave structure on the contact surface. When pressure is applied, the raised areas between adjacent anti-slip patterns 14 undergo local deformation, increasing the coefficient of friction of the contact surface. In the design of the anti-slip pattern 14 and the handle step 13, the top of the anti-slip pattern 14 is kept 5-15 mm away from the lower edge of the handle step 13, ensuring that when the thumb and forefinger contact the step, the naturally curved part of the fingers falls precisely into the dense area of ​​the anti-slip pattern 14. Through this layout, the anti-slip pattern 14 can provide directional frictional resistance in both longitudinal grip and circumferential rotation grip states, so that the anti-slip effect covers the main force direction during the use of the cup body 10.

[0046] Specifically, such as Figure 1 and Figure 2 As shown, the height of the lower cup 12 is greater than the height of the upper cup 11, and the width of the lower cup 12 decreases from top to bottom. This decrease in width can be achieved through a linear or non-linear curve to match the natural curvature of the human hand. The tapered design of the lower cup 12, with its width decreasing from top to bottom, forms an ergonomic grip surface, allowing users of different hand sizes to naturally fit the outer wall of the lower cup 12. Combined with the hand-holding step 13 of the upper cup 11, this creates a double grip support structure, enhancing the anti-slip effect. Furthermore, the proportional relationship between the height of the lower cup 12 and the upper cup 11 ensures that the cup body 10 maintains a large capacity while reducing the overall height, avoiding a top-heavy appearance. The gradually tapering structure with decreasing width avoids the risk of slippage associated with traditional straight-walled cups and strengthens the structural strength of the cup body 10 through its tapering shape, reducing the probability of deformation under external impact.

[0047] In practical applications, such as Figure 6 As shown, the food preservation cup also includes a handle 30, which is connected to the upper cup cylinder 11. The handle 30 is fixed to the outer wall of the upper cup cylinder 11, and its connection position is close to the top of the cup body 10. The handle 30 can be designed in an arc or ring shape, with a diameter ranging from, for example, 20-30 mm, to facilitate gripping with fingers. When the cup body 10 is held, the hand-holding step 13 provides support through the web of the hand, while the handle 30 generates longitudinal pulling force through the grip of the palm. The directions of action of the two are orthogonal, jointly limiting the displacement of the cup body 10 when held.

[0048] When the cup body 10 is filled with liquid, causing the center of gravity to shift downwards, the handle 30 is positioned near the top of the cup body 10, creating a lever balance between the grip point and the center of gravity. When gripping the handle 30, the applied lifting force is directly transmitted to the entire structure of the cup body 10 through the upper cup cylinder 11. In rapid movement scenarios, the longitudinal pulling force applied by the handle 30, combined with the lateral restraint of the hand-locking step 13, can counteract the tilting of the cup body 10 caused by inertia. Furthermore, the installation position of the handle 30 avoids the concave area 121 of the lower cup cylinder 12, ensuring that the surface of the anti-slip texture 14 is intact and unobstructed, maintaining the original coefficient of friction. When operating with one hand, the thumb can rest against the hand-locking step 13, while the other four fingers wrap around the handle 30, forming a three-point force-bearing structure, significantly reducing local pressure.

[0049] The handle 30 can be made of plastic and is attached to the outer wall of the upper cup 11 by heat fusion or screw fixing. The handle 30 can be designed in an arc shape to form a ring-shaped grip space with the outer wall of the upper cup 11. The surface of the handle 30 can be provided with anti-slip texture to increase friction. The attachment position of the handle 30 can be selected at the upper part of the middle of the upper cup 11 to facilitate the user's balance of the cup body 10 when holding it with one hand.

[0050] For example, such as Figures 2 to 5As shown, the portion of the lower end of the inner lid cylinder 24 extending beyond the cap 23 can be 3-5 mm in length, forming the mounting and positioning area for the sealing ring 25. The thickness of the sealing ring 25 can range from 1.5 to 2.5 mm to accommodate the compression requirements of different cup opening sizes. The crimp width of the lower periphery of the cap 23 can be 0.8-1.2 mm, applying pressure through a uniform annular contact surface. Specifically, when the cup lid 20 is closed, the extended portion of the inner lid cylinder 24 is inserted into the cup opening, and the sealing ring 25 is fitted onto the outer wall of the inner lid cylinder 24 and extends to the outer side of the lower end of the cap 23. During the pressing process, the periphery of the cap 23 contacts the periphery of the cup opening, compressing the sealing ring 25 between the outer wall of the inner lid cylinder 24 and the inner wall of the cup opening. When external pressure is applied to the cup lid 20, the double-limiting structure formed by the inner lid cylinder 24 and the cap 23 can disperse stress, keeping the sealing ring 25 in a uniformly compressed state. This structure creates a two-stage seal along the height of the cup body 10: the first stage is a radial seal achieved by the inner cap cylinder 24 fitting with the sealing ring 25, and the second stage is an axial seal achieved by the periphery of the cap 23 pressing against the seal. When a negative pressure is generated inside the cup body 10, the pressure difference causes the cap 23 to press down further, and the rigid support of the inner cap cylinder 24 maintains the stability of the compression of the sealing ring 25. The inner cap cylinder 24 can be made of a rigid plastic material, possessing a certain degree of rigidity and strength. The sealing ring 25 can be made of a flexible material, such as silicone or rubber, to provide a good sealing effect. The lower periphery of the cap 23 can be designed as a ring structure to uniformly press the sealing ring 25 against the seal. The protruding part of the inner cap cylinder 24 can be designed as a cylinder, with its outer diameter slightly smaller than the inner diameter of the sealing ring 25, to facilitate the installation and positioning of the sealing ring 25. The sealing ring 25 is made of an elastic material, which can deform under pressure to enhance the sealing effect.

[0051] Specifically, such as Figure 5 As shown, the sealing ring 25 includes a main body 251, an inserting part 252, and a first sealing tongue 253. The main body 251 is fitted onto the inner cover cylinder 24. The inserting part 252 protrudes from the top of the main body 251, and the first sealing tongue 253 protrudes from the peripheral wall of the main body 251. An installation gap is formed between the inner cover cylinder 24 and the surrounding wall of the cap 23. A snap-fit ​​rib is provided in the installation gap, and the snap-fit ​​rib has a groove. The inserting part 252 extends into the installation gap and is embedded in the groove. The first sealing tongue 253 abuts against the lower periphery of the cap 23.

[0052] The main body 251 can be made of an elastic material, with its inner diameter slightly smaller than the outer diameter of the inner cover cylinder 24 to achieve an interference fit. For example, the inner diameter of the main body 251 made of silicone material is 0.5-1.2 mm smaller than the outer diameter of the inner cover cylinder 24. The fitting part 252 can be designed as an annular protrusion or spaced protrusions, with a height of 1.5-3 mm and a width of 2-4 mm. The groove depth can be set to 1.8-3.2 mm to match the height of the fitting part 252. The thickness of the first sealing tongue 253 can gradually decrease from the root to the end, with a thickness of 1.2-2 mm at the root and 0.5-0.8 mm at the end, allowing for gradient deformation under pressure. The snap-fit ​​rib can extend continuously along the circumference of the installation gap or be segmented, with a width 1.2-1.5 times the width of the fitting part 252 to provide sufficient support.

[0053] In practical applications, such as Figure 5 As shown, the sealing ring 25 also includes a second sealing tongue 254, which protrudes from the peripheral wall of the main body 251 and is located below the first sealing tongue 253. The periphery of the second sealing tongue 254 away from the main body 251 seals against the inner wall surface of the cup body 10.

[0054] During the closing process of the lid 20, the periphery of the second sealing tongue 254 first contacts the inner wall of the cup body 10. As the lid 21 is pressed down, the second sealing tongue 254 undergoes radial compression deformation, forming the first sealing interface. When the lid 21 continues to be pressed down until the first sealing tongue 253 contacts the lower periphery of the cap 23, the first sealing tongue 253 undergoes axial compression deformation, forming the second sealing interface. Thus, through the deformation compensation and pressure distribution mechanism of the double sealing structure, all-round sealing protection of the cup mouth periphery is achieved.

[0055] For example, such as Figure 3 and Figure 4 As shown, the vacuum valve 22 includes a valve body 221 and a sealing edge 222. The valve body 221 passes through the air extraction hole 211, and the two ends of the valve body 221 extend out of the upper and lower ends of the air extraction hole 211, respectively. The sealing edge 222 protrudes from the upper peripheral wall of the valve body 221. The sealing edge 222 is used to close the periphery of the air extraction hole 211 when it abuts against the cover 21, and to open the periphery of the air extraction hole 211 when it moves away from the cover 21. The peripheral wall of the valve body 221 abuts against the hole wall of the air extraction hole 211. An air passage groove 223 is provided on the peripheral wall of the valve body 221 located below the sealing edge 222. One end of the air passage groove 223 is close to the sealing edge 222, and the other end extends toward the bottom of the valve body 221. The length of the air passage groove 223 is greater than the depth of the air extraction hole 211.

[0056] The contact method between the peripheral wall of the valve body 221 and the wall of the extraction hole 211 can be set as an interference fit or a clearance fit. The cross-sectional shape of the air passage groove 223 can be rectangular, trapezoidal, or arc-shaped, with a groove depth ranging from 0.5 to 2 mm. The sealing edge 222 extends circumferentially along the valve body 221, and the protrusion height of the sealing edge 222 can be set to 0.3 to 1 mm. Its contact surface with the cover 21 can cover the peripheral area of ​​the extraction hole 211, with a coverage width of 1 to 3 mm, for example. When the valve body 221 is subjected to external force and undergoes axial displacement, the contact state between the sealing edge 222 and the cover 21 is changed, and at this time, the air passage groove 223 forms a continuous airflow channel. Since the length of the air passage groove 223 exceeds the depth of the extraction hole 211, the groove always penetrates the upper and lower opening ends of the extraction hole 211 during the up and down movement of the valve body 221.

[0057] When the sealing edge 222 detaches from the cap 21, the airflow in the inner cavity of the cup exits sequentially through the bottom opening of the air vent 223, the internal channel of the air vent 223, and the top opening of the suction hole 211. During this process, the contact surface between the peripheral wall of the valve body 221 and the wall of the suction hole 211 only needs to maintain a basic seal, without the need for precise control of the gap size. This design ensures that the air vent 223 always spans the entire length of the suction hole 211 during the lifting and lowering of the valve body 221, ensuring unobstructed airflow. By replacing the traditional gap-guided airflow method with the air vent 223, the machining tolerance requirements for the valve body 221 and the suction hole 211 can be relaxed, while avoiding air leakage problems caused by assembly errors.

[0058] When the vacuum valve 22 is opened, external airflow can enter the cup body 10 through the stable channel formed by the air passage groove 223, eliminating the need for gas exchange based on the assembly gap between the valve body 221 and the suction port 211. The tight contact between the peripheral wall of the valve body 221 and the inner wall of the suction port 211 is maintained, effectively reducing machining accuracy requirements while ensuring reliable sealing when the valve is closed. The length design of the air passage groove 223 ensures that it maintains an effective ventilation cross-section throughout the opening process of the vacuum valve 22, preventing airflow obstruction and achieving a rapid balance of internal and external air pressure.

[0059] Specifically, there are at least two air venting slots 223, which are spaced apart circumferentially along the valve body 221. The number of air venting slots 223 can be two, three, or four; for example, three air venting slots 223 can be evenly distributed at 120-degree intervals. This circumferential spacing allows the air venting slots 223 to form a symmetrical or asymmetrical arrangement around the valve body 221, with a symmetrical arrangement further optimizing airflow balance. The spacing of the circumferential intervals can be equidistant or unequal; for example, the spacing can be reduced in areas of concentrated stress on the valve body 221 to enhance local exhaust capacity.

[0060] As the valve body 221 moves within the evacuation port 211, multiple air passages 223 simultaneously form gas channels. Due to their circumferential spacing, gas is simultaneously discharged from different directions around the valve body 221, preventing lateral displacement of the valve body 221 caused by concentrated airflow in a single direction. During vacuuming, the multi-path exhaust structure formed by the multiple air passages 223 causes the gas pressure in each area of ​​the cup's inner cavity to decrease synchronously. The circumferential spacing also disperses the frictional stress in the contact area between the valve body 221 and the inner wall of the evacuation port 211, thereby reducing the risk of deformation due to long-term use. When the sealing edge 222 detaches from the cover 21, the multi-air passage structure 223 allows outside air to simultaneously enter the cavity at multiple points along the circumference, preventing unilateral deformation of the sealing edge 222 caused by single-point air intake.

[0061] Three air passage grooves 223 are machined on the outer peripheral wall of the valve body 221. The three air passage grooves 223 are evenly distributed along the circumference of the valve body 221, and the central angle between adjacent air passage grooves 223 is 120 degrees. The top end of each air passage groove 223 extends to the lower end face of the sealing edge 222, and the bottom end extends to the bottom end face of the valve body 221. The axial length of the air passage groove 223 covers the entire depth of the air extraction hole 211.

[0062] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A crisper, characterized in that, include: The cup body includes an upper cup cylinder and a lower cup cylinder connected vertically. The outer wall surface of the lower cup cylinder has a concave area, which is concave relative to the outer wall surface of the upper cup cylinder. A handle step is formed at the junction of the outer wall surface of the upper cup cylinder and the concave area. The handle step extends along the circumference of the cup body and is used for the thumb and forefinger of the human hand to rest against. The concave area is provided with anti-slip texture. A cup lid, which can be opened and placed over the mouth of the cup body, the cup lid includes a lid body and a vacuum valve, the lid body is sealed over the mouth of the cup body, the lid body has an air extraction hole, the air extraction hole is connected to the cavity of the cup body, and the vacuum valve is located at the air extraction hole to open or close the air extraction hole.

2. The crisper drawer of claim 1, wherein, The step surface of the handrail is inclined downwards.

3. The crisper drawer of claim 1, wherein, The anti-slip texture extends along the height direction of the cup body, and there are multiple anti-slip textures distributed along the circumference of the cup body.

4. The crisper drawer of claim 1, wherein, The height of the lower cup is greater than the height of the upper cup, and the width of the lower cup decreases from top to bottom.

5. The crisper drawer of claim 1, wherein, The food preservation cup also includes a handle, which is connected to the upper cup cylinder.

6. The crisper drawer of claim 1, wherein, The lid includes a cap and an inner cap cylinder. The inner cap cylinder protrudes inside the cap, and the lower end of the inner cap cylinder extends beyond the lower end of the cap. The cup lid also includes a sealing ring, which is fitted onto the portion of the inner cap cylinder that extends beyond the cap. The lower periphery of the cap cylinder presses the sealing ring against the periphery of the cup opening.

7. The crisper container of claim 6, wherein, The sealing ring includes a main body, an inserting part, and a first sealing tongue. The main body is fitted onto the inner cover cylinder, the inserting part protrudes from the top of the main body, and the first sealing tongue protrudes from the peripheral wall of the main body. An installation gap is formed between the inner cover cylinder and the surrounding wall of the cap. A snap-fit ​​rib is provided in the installation gap. The snap-fit ​​rib has a groove. The snap-fit ​​part extends into the installation gap and is embedded in the groove. The first sealing tongue abuts against the lower periphery of the cap.

8. The crisper container of claim 7, wherein, The sealing ring also includes a second sealing tongue, which protrudes from the peripheral wall of the main body and is located below the first sealing tongue. The peripheral edge of the second sealing tongue away from the main body is in sealing contact with the inner wall surface of the cup.

9. The crisper drawer of claim 1, wherein, The vacuum valve includes a valve body and a sealing edge. The valve body passes through the air extraction hole, with its two ends extending out of the upper and lower ends of the air extraction hole, respectively. The sealing edge protrudes from the upper peripheral wall of the valve body and is used to close the periphery of the air extraction hole when it abuts against the cover and to open the periphery of the air extraction hole when it moves away from the cover. The peripheral wall of the valve body abuts against the wall of the air extraction hole. An air passage groove is formed on the peripheral wall of the valve body below the sealing edge. One end of the air passage groove is close to the sealing edge, and the other end extends toward the bottom of the valve body. The length of the air passage groove is greater than the depth of the air extraction hole.

10. The crisper container of claim 9, wherein, The number of air venting grooves is at least two, and the at least two air venting grooves are arranged at intervals along the circumference of the valve body.

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