Container lid and water cup

Abstract

The present invention relates to a container lid, comprising a lid body and a lid opening assembly arranged on the lid body in a flipping manner, wherein the lid body is provided with a water outlet; a laterally movable lock button is arranged on the lid opening assembly, and during lateral movement, the lock button can enable the lid opening assembly to form a locked state in which the water outlet is closed or an unlocked state in which the water outlet is opened, so that the lid opening assembly can be quickly flipped with one hand; and a rotatable limiting member is arranged on the lid opening assembly, and when rotating to a set angle, the limiting member can promptly prevent the lock button from moving toward an unlocking direction, thereby effectively solving the drawback in the prior art that accidentally touching the end portion of the lock button may cause the lid opening assembly to be unintentionally flipped to open the water outlet. When flipping is required to open the water outlet, simply rotating the limiting member to a preset position with one hand enables the lock button to move laterally into the unlocked state, so that the entire lid opening assembly can be smoothly flipped open.

Description

A container lid and a water cup Technical Field

[0001] This invention relates to the field of insulated container technology, and more particularly to a container lid, as well as a water cup. Background Technology

[0002] Insulated containers are necessities in daily life, needed for water storage or insulation during travel and at home. Most existing insulated containers use a threaded connection to the container body for the lid. However, this threaded connection requires two hands to open; one hand holds the container while the other unscrews the lid. This method is quite inconvenient in certain situations, such as when a driver is driving and trying to open the lid, which is both difficult and unsafe.

[0003] In response to this situation, some insulated containers with lids that can be opened with one hand have emerged in the existing technology. For example, the "Cup Lid and Container with Pressure Relief Function" disclosed in Chinese Utility Model Patent Application No. 202222731396.X (Publication No. CN218528395U) includes a lid body and a flip cover hinged to the lid body. The lid body has a drinking spout, and the flip cover can close the drinking spout when flipped down. The flip cover has a pressure relief channel that can conduct through the drinking spout, and a pressure relief valve is installed in the pressure relief channel. The flip cover also has a triggering device that can trigger the pressure relief valve to open or close the pressure relief channel. In this structure, by sliding a locking button on the flip cover, the button can lock the flip cover to the lid body when the flip cover is in the flipped down state, and pushing the locking button can unlock the flip cover, thus easily achieving one-handed opening of the cup lid.

[0004] However, there is also a problem here: since the end of the lock button that is used for pressing is exposed on the side of the flip cover, in daily use, the lock button is often accidentally touched and moved inward, causing the flip cover to be opened accidentally, thus causing unnecessary water leakage.

[0005] Therefore, how to provide a cup lid or cup with a reasonable structure that can be opened with one hand and effectively prevent leakage caused by accidental opening of the lid due to accidental pressing of the locking button is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a container lid with a reasonable structure that can quickly achieve one-handed operation and effectively prevent accidental opening due to accidental touch of the lock button, in light of the above-mentioned existing technology.

[0007] The second technical problem to be solved by the present invention is to provide a water cup with the container lid installed, in view of the above-mentioned existing technology.

[0008] The technical solution adopted by the present invention to solve the first technical problem is as follows: a container lid, including a lid body and an opening assembly flipped onto the lid body, wherein the lid body is provided with a water outlet, and the opening assembly can close or open the water outlet during the flipping process, characterized in that: the opening assembly includes a rotatable limiting member and a locking button that can move laterally, the rotation axis of the limiting member is parallel or substantially parallel to the movement direction of the locking button, and the locking button can enable the opening assembly to form a locked state with the water outlet closed or an unlocked state with the water outlet open during the lateral movement, and the limiting member can prevent the locking button from moving in the unlocking direction when rotated to a first angle, and allow the locking button to move in the unlocking direction when rotated to a second angle.

[0009] In order to enable the locking button to better form a locked or unlocked state between the opening assembly and the cover, preferably, the locking button has a buckle, and the inner wall of the water outlet has a groove that adapts to the buckle. When the locking button moves to a set position in the locking direction, the buckle can adapt to the groove and lock the opening assembly to the cover. When the locking button moves to a set position in the unlocking direction, the buckle can disengage from the groove and the opening assembly can be opened.

[0010] To optimize the overall structure of the cover opening assembly and enable better compatibility between the locking button and the limiting member, the cover opening assembly preferably further includes a flipping member hinged to the cover body and a plug located at the bottom of the flipping member and extending into the water outlet to close the water outlet. A receiving space is formed between the plug and the flipping member to allow the locking button to move laterally. The limiting member is rotatably disposed on the flipping member and is at least partially built into the receiving space to prevent the locking button from moving in the unlocking direction. A reset member is also provided in the receiving space to drive the locking button to always move in the locking direction.

[0011] In order to enable the limiting member to rotate better on the flipping member, preferably, the limiting member is provided with a shaft hole that allows the limiting member to rotate around its own axis, the flipping member is provided with a fixed shaft that can fit the shaft hole, the flipping member is also provided with a vertical through hole for partially exposing the limiting member on the top of the flipping member, and the portion of the limiting member exposed on the top of the flipping member is also provided with a first notch to facilitate the rotation of the limiting member.

[0012] In order to enable the opening component to automatically flip open, preferably, the opening component and the cover body are provided with an elastic element that can drive the opening component to always spring open in the direction of opening the water outlet.

[0013] In order for the limiting member to better form a blocking state or a passing state for the lock button, preferably, the limiting member has a second through-hole in the transverse direction, and the lock button has a limiting block adapted to the second through-hole. During the rotation, the limiting member can form a blocking state to prevent the limiting block from passing through the second through-hole and a passing state to allow the limiting block to pass through the second through-hole.

[0014] In order to ensure that the limiting member can be stopped in time after it is in a blocking state or a passing state, preferably, a first limiting surface and a second limiting surface are formed on the outer peripheral surface of the limiting member, and a first limiting wall adapted to the first limiting surface and a second limiting wall adapted to the second limiting surface are formed on the bottom of the flipping member.

[0015] When the limiting member rotates clockwise to the blocking state, the first limiting surface can abut against the first limiting wall to restrict the limiting member from continuing to rotate clockwise;

[0016] When the limiting member rotates counterclockwise to the passage state, the second limiting surface can abut against the second limiting wall to restrict the limiting member from continuing to rotate counterclockwise.

[0017] To ensure that the user can clearly understand whether the limiting member has rotated to the correct position, preferably, the side of the limiting member is also provided with a positioning part, and the bottom of the flipping member extends downward with a convex wall. The convex wall is formed with a first positioning groove and a second positioning groove that can both fit the positioning part. When the limiting member rotates to the blocking state, the positioning part can fit into the first positioning groove to restrict the limiting member from rotating freely without external force. When the limiting member rotates to the passage state, the positioning part can fit into the second positioning groove to restrict the limiting member from rotating freely without external force.

[0018] To enable the locking button to simultaneously form a pressure relief channel during the unlocking process, thus facilitating easier opening of the cover assembly, preferably, the cover assembly also includes a pressure relief component. The plug body has a pressure relief channel that connects to the outside. The pressure relief component includes a pressure relief rod, a pressure relief head, and a return spring. The pressure relief rod is built into the pressure relief channel, and the pressure relief head is connected to the bottom of the pressure relief rod and exposed at the bottom of the plug body. The return spring is located between the pressure relief rod and the plug body to ensure that the pressure relief head always blocks the air inlet of the pressure relief channel without external force. The locking button also has an inclined surface. When the locking button moves laterally to the unlocked state, the inclined surface can press the top of the pressure relief rod, causing the pressure relief rod to move downwards and releasing the pressure relief head from blocking the pressure relief channel.

[0019] The technical solution adopted by the present invention to solve the second technical problem is: a water cup, comprising a cup body, characterized in that: the cup body is provided with the container lid, and the lid is detachably connected to the cup body.

[0020] Compared with the prior art, the container lid of the present invention has the following advantages: 1. By setting a laterally movable locking button on the lid opening assembly, the locking button can enable the lid opening assembly to either lock the water outlet or unlock the water outlet during lateral movement, thereby enabling quick one-handed flipping of the lid opening assembly; 2. By setting a rotatable limiting member on the lid opening assembly, the limiting member can promptly prevent the locking button from moving in the unlocking direction when rotated to a set angle, thus effectively solving the drawback of the prior art where the lid opening assembly is accidentally flipped open due to accidental contact with the locking button end; 3. Since the limiting member here switches between the blocking state and the passage state by rotation. Therefore, the limiting component is not easily touched by external force and accidentally rotated to the open state. When it is necessary to flip and open the water outlet, simply rotate the limiting component to the set position with one hand, which will cause the locking button to move laterally to the unlocked state, allowing the entire lid opening assembly to be smoothly flipped open. This makes the entire lid opening process absolutely controllable, and the rotation method also increases the user's hands-on fun. 4. In addition, a pressure relief component is set on the lid opening assembly. During the lateral movement of the locking button to unlock, the pressure relief rod of the pressure relief component is triggered simultaneously, so that the gas inside the water cup with this container lid is instantly depressurized, making it easier to open the entire lid opening assembly. In addition, this container lid also has the advantages of reasonable structure and convenient operation. Attached Figure Description

[0021] Figure 1 is a three-dimensional structural diagram of this embodiment (the cover opening component is in a closed state);

[0022] Figure 2 is a three-dimensional structural diagram of this embodiment (the cover opening component is in the open state);

[0023] Figure 3 is a schematic diagram of the decomposed state structure of this embodiment;

[0024] Figure 4 is a cross-sectional schematic diagram of this embodiment;

[0025] Figure 5 is a cross-sectional view of another location in this embodiment (the limiting member is in a blocked state);

[0026] Figure 6 is a cross-sectional view of another location in this embodiment (the limiting member is in the passage state);

[0027] Figure 7 is a three-dimensional structural diagram of the limiting member in this embodiment;

[0028] Figure 8 is a schematic diagram of the bottom view structure of the flipping component in this embodiment;

[0029] Figure 9 is a schematic diagram of the assembly structure of the flipping component and the limiting component in this embodiment (the limiting component is in the blocking state);

[0030] Figure 10 is a schematic diagram of the assembly structure of the flipping component and the limiting component in this embodiment (the limiting component is in the passage state);

[0031] Figure 11 is a schematic diagram of the structure of the container lid installed on the cup body in this embodiment. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] Figures 1-10 show schematic diagrams of the container lid in this embodiment. The container lid in this embodiment mainly includes a lid body 1, a lid opening component 2, and a pressure relief component 4.

[0034] Referring to Figures 1 to 4, in this embodiment, the cover opening component 2 is rotatably mounted on the cover body 1. The cover body 1 is provided with a water outlet 1a. During the rotatable process, the cover opening component 2 can close or open the water outlet 1a. The cover opening component 2 includes a rotatable limiting member 2a and a laterally movable locking button 2b. The rotation axis of the limiting member 2a is parallel or substantially parallel to the movement direction of the locking button 2b. During the lateral movement, the locking button 2b can enable the cover opening component 2 to form a locked state with the water outlet 1a closed or an unlocked state with the water outlet 1a open. When the limiting member 2a rotates to a first angle, it can prevent the locking button 2b from moving in the unlocking direction, and when it rotates to a second angle, it allows the locking button 2b to move in the unlocking direction.

[0035] In order to enable the locking button 2b to better form a locked or unlocked state between the opening assembly 2 and the cover 1, as shown in Figures 3 and 4, in this embodiment, a buckle 2b1 is formed on the locking button 2b, and a groove 1b adapted to the buckle 2b1 is formed on the inner wall of the water outlet 1a. When the locking button 2b moves to the set position in the locking direction, the buckle 2b1 can fit into the groove 1b and lock the opening assembly 2 onto the cover 1. When the locking button 2b moves to the set position in the unlocking direction, the buckle 2b1 can disengage from the groove 1b and the opening assembly 2 can be opened.

[0036] Secondly, to ensure that the opening assembly 2 can better fit onto the cover 1 when flipped into the locked state, as shown in Figures 3 and 4, the opening assembly 2 in this embodiment further includes a flipping member 2c hinged to the cover 1 and a plug 2d located at the bottom of the flipping member 2c and extending into the outlet 1a to close the outlet 1a. A receiving space A is formed between the plug 2d and the flipping member 2c to allow the locking button 2b to move laterally. A limiting member 2a is rotatably disposed on the flipping member 2c and at least partially built into the receiving space A to prevent the locking button 2b from moving in the unlocking direction. A reset member 2e is also provided within the receiving space A to drive the locking button 2b to always move in the locking direction. A sealing member is typically installed at the bottom of the plug 2d to enhance the sealing performance of the outlet 1a.

[0037] Meanwhile, to enable the limiting member 2a to rotate better on the flipping member 2c, as shown in Figures 7 to 9, in this embodiment, a shaft hole 2a1 is specially provided on the limiting member 2a to allow the limiting member 2a to rotate around its own axis. The flipping member 2c is provided with a fixed shaft 2c1 that can fit into the shaft hole 2a1. The flipping member 2c is also provided with a vertical through hole 2c2 for partially exposing the limiting member 2a at the top of the flipping member 2c. The part of the limiting member 2a exposed at the top of the flipping member 2c is also provided with a first notch 2a2 to facilitate the rotation of the limiting member 2a. Generally, two fixed shafts 2c1 are provided, and the two fixed shafts 2c1 are symmetrically arranged to fit into the shaft hole 2a1. In order to enable the fixed shaft 2c1 to be better assembled in the shaft hole 2a1, the end of the fixed shaft 2c1 is also provided with a bevel so that the limiting member 2a can be better inserted from bottom to top, as shown in Figure 4.

[0038] Furthermore, in order to enable the opening component 2 to automatically flip open, as shown in Figures 2 to 4, in this embodiment, an elastic element 5 is specially provided between the opening component 2 and the cover body 1, which can drive the opening component 2 to always spring open in the direction of opening the water outlet 1a.

[0039] In order to better match the cover body 1 when the cover opening component 2 is flipped to the locked state, as shown in Figures 1 and 3, in this embodiment, the edge of the flipping component 2c is specially formed with a skirt 2c3 that adapts to the contour of the cover body 1, and the end of the lock button 2b is formed with a pressing part 2b2 for pushing the lock button 2b to move in the unlocking direction. The skirt 2c3 is provided with a pressing hole 2c4 that is laterally through for the pressing part 2b2 to pass through laterally and be exposed.

[0040] In this embodiment, in order to enable the limiting member 2a to better form a blocking state or a passing state for the lock button 2b, as shown in Figures 5 to 7, the limiting member 2a has a second through-hole 2a3, and the lock button 2b has a limiting block 2b3 adapted to the second through-hole 2a3. During the rotation, the limiting member 2a can form a blocking state to prevent the limiting block 2b3 from passing through the second through-hole 2a3 and a passing state to allow the limiting block 2b3 to pass through the second through-hole 2a3.

[0041] In this embodiment, to ensure that the limiting member 2a can be promptly stopped after entering either a blocking or passage state, as shown in Figures 5, 6, and 8, a first limiting surface 2a4 and a second limiting surface 2a5 are formed on the outer peripheral surface of the limiting member 2a. The bottom of the flipping member 2c has a first limiting wall 2c5 adapted to the first limiting surface 2a4 and a second limiting wall 2c6 adapted to the second limiting surface 2a5. When the limiting member 2a rotates clockwise to the blocking state, the first limiting surface 2a4 abuts against the first limiting wall 2c5, thus restricting the limiting member 2a from continuing to rotate clockwise. When the limiting member 2a rotates counterclockwise to the passage state, the second limiting surface 2a5 abuts against the second limiting wall 2c6, thus restricting the limiting member 2a from continuing to rotate counterclockwise.

[0042] In this embodiment, in order to enable the user to clearly understand whether the limiting member 2a has rotated to the correct position, referring to Figures 9 and 10, a positioning part 2a6 is specially provided on the side of the limiting member 2a, and a convex wall 2c7 extends downward from the bottom of the flipping member 2c. A first positioning groove 2c8 and a second positioning groove 2c9 are formed on the convex wall 2c7, both of which can be adapted to the positioning part 2a6. When the limiting member 2a rotates to the blocking state, the positioning part 2a6 can be adapted to the first positioning groove 2c8 to restrict the limiting member 2a from rotating freely without external force. When the limiting member 2a rotates to the passing state, the positioning part 2a6 can be adapted to the second positioning groove 2c9 to restrict the limiting member 2a from rotating freely without external force. The limiting member 2a here is also provided with a groove 2a7 that penetrates the outer peripheral surface, as shown in Figure 7. The setting of the groove 2a5 enables the limiting member 2a with the positioning part 2a6 to have a greater deformability, so that the positioning part 2a6 can better fit into the first positioning groove 2c8 and the second positioning groove 2c9.

[0043] In this embodiment, in order to enable the locking button 2b to simultaneously form a pressure relief channel during the unlocking process, so as to open the cover assembly 2 more easily, as shown in Figures 3 and 4, the cover assembly 2 is also provided with a pressure relief assembly 3. The plug body 2d has a pressure relief channel B that can connect to the outside. The pressure relief assembly 3 includes a pressure relief rod 3a, a pressure relief head 3b and a return spring 3c. The pressure relief rod 3a is built into the pressure relief channel B. The pressure relief head 3b is connected to the bottom of the pressure relief rod 3a and exposed at the bottom of the plug body 2d. The return spring 3c is located between the pressure relief rod 3a and the plug body 2d to drive the pressure relief head 3b to always block the air inlet end of the pressure relief channel B without external force. The locking button 2b also has an inclined surface 2b4. When the locking button 2b moves laterally to the unlocked state, the inclined surface 2b4 can squeeze the top of the pressure relief rod 3a and drive the pressure relief rod 3a to move down and drive the pressure relief head 3b to release the blockage of the pressure relief channel B.

[0044] In addition, this embodiment also provides a water cup, as shown in Figure 11. The water cup mainly includes a cup body 4, and a container lid is installed on the cup body 4. The lid body 1 of the container lid is detachably connected to the cup body 4. The detachable connection can be a threaded connection. Of course, it can also adopt other structures that can achieve detachable connection, which will not be elaborated here.

[0045] It is also necessary to further explain that, in this embodiment, by setting a horizontally movable locking button 2b on the opening assembly 2, and by enabling the opening assembly 2 to be in a locked state that closes the water outlet 1a or an unlocked state that opens the water outlet 1a during the horizontal movement of the locking button 2b, the opening assembly 2 can be quickly flipped over with one hand. Furthermore, by setting a rotatable limiting member 2a on the opening assembly, the limiting member 2a can also prevent the locking button 2b from moving in the unlocking direction in time when it is rotated to a set angle. This effectively solves the drawback of the prior art where the opening assembly 2 is accidentally flipped over and the water outlet 1a is opened due to accidental contact with the end of the locking button 2b. When it is necessary to flip and open the water outlet 1a, it is only necessary to rotate the limiting member 2a to the set position with one hand to make the locking button 2b move horizontally to the unlocked state and the entire opening assembly 2 can be smoothly flipped over and opened, so that the entire opening process is absolutely controllable.

[0046] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "inner," "outer," "upper," and "lower," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A container lid, comprising a lid body (1) and an opening assembly (2) flipped onto the lid body (1), wherein the lid body (1) is provided with a water outlet (1a), and the opening assembly (2) can close or open the water outlet (1a) during the flipping process, characterized in that: The opening assembly (2) includes a rotatable limiting member (2a) and a laterally movable locking button (2b). The rotation axis of the limiting member (2a) is parallel or substantially parallel to the movement direction of the locking button (2b). During lateral movement, the locking button (2b) enables the opening assembly (2) to form a locked state that closes the water outlet (1a) or an unlocked state that opens the water outlet (1a). When the limiting member (2a) rotates to a first angle, it can prevent the locking button (2b) from moving in the unlocking direction, and when it rotates to a second angle, it allows the locking button (2b) to move in the unlocking direction.

2. The container lid according to claim 1, characterized in that: A latch (2b1) is formed on the locking button (2b), and a slot (1b) adapted to the latch (2b1) is formed on the inner wall of the water outlet (1a). When the locking button (2b) moves to the set position in the locking direction, the latch (2b1) can fit into the slot (1b) and lock the cover opening assembly (2) on the cover (1). When the locking button (2b) moves to the set position in the unlocking direction, the latch (2b1) can disengage from the slot (1b) and the cover opening assembly (2) can be opened.

3. The container lid according to claim 1, characterized in that: The opening assembly (2) further includes a flipping member (2c) hinged to the cover body (1) and a plug (2d) disposed at the bottom of the flipping member (2c) and able to extend into the outlet (1a) to close the outlet (1a). A receiving space (A) is formed between the plug (2d) and the flipping member (2c) for allowing the locking button (2b) to move laterally. The limiting member (2a) is rotatably disposed on the flipping member (2c) and at least partially built into the receiving space (A) to prevent the locking button (2b) from moving in the unlocking direction. A reset member (2e) is also provided in the receiving space (A) to drive the locking button (2b) to always move in the locking direction.

4. The container lid according to claim 3, characterized in that: The limiting member (2a) is provided with a shaft hole (2a1) that allows the limiting member (2a) to rotate around its own axis. The flipping member (2c) is provided with a fixed shaft (2c1) that can fit the shaft hole (2a1). The flipping member (2c) is also provided with a vertical through hole (2c2) for partially exposing the limiting member (2a) at the top of the flipping member (2c). The portion of the limiting member (2a) exposed at the top of the flipping member (2c) is also provided with a first notch (2a2) to facilitate the rotation of the limiting member (2a).

5. The container lid according to claim 1, characterized in that: The opening assembly (2) and the cover (1) are further provided with an elastic element (5) that can drive the opening assembly (2) to always spring open in the direction of opening the water outlet (1a).

6. The container lid according to claim 3, characterized in that: The limiting member (2a) has a second through-hole (2a3) on it, and the locking button (2b) has a limiting block (2b3) adapted to the second through-hole (2a3). During rotation, the limiting member (2a) can be in a blocking state to prevent the limiting block (2b3) from passing through the second through-hole (2a3) and a passing state to allow the limiting block (2b3) to pass through the second through-hole (2a3).

7. The container lid according to claim 6, characterized in that: The outer peripheral surface of the limiting member (2a) is provided with a first limiting surface (2a4) and a second limiting surface (2a5), and the bottom of the flipping member (2c) is provided with a first limiting wall (2c5) adapted to the first limiting surface (2a4) and a second limiting wall (2c6) adapted to the second limiting surface (2a5). When the limiting member (2a) rotates clockwise to the blocking state, the first limiting surface (2a4) can abut against the first limiting wall (2c5) to restrict the limiting member (2a) from continuing to rotate clockwise; When the limiting member (2a) rotates counterclockwise to the passage state, the second limiting surface (2a5) can abut against the second limiting wall (2c6) to restrict the limiting member (2a) from continuing to rotate counterclockwise.

8. The container lid according to claim 6, characterized in that: The side of the limiting member (2a) is also provided with a positioning part (2a6), and the bottom of the flipping member (2c) extends downward with a convex wall (2c7). The convex wall (2c7) has a first positioning groove (2c8) and a second positioning groove (2c9) that can both fit the positioning part (2a6). When the limiting member (2a) is rotated to the blocking state, the positioning part (2a6) can fit into the first positioning groove (2c8) to restrict the limiting member (2a) from rotating freely without external force. When the limiting member (2a) is rotated to the passing state, the positioning part (2a6) can fit into the second positioning groove (2c9) to restrict the limiting member (2a) from rotating freely without external force.

9. The container lid according to claim 3, characterized in that: The opening assembly (2) is also provided with a pressure relief assembly (3). A pressure relief channel (B) that can communicate with the outside is formed on the plug body (2d). The pressure relief assembly (3) includes a pressure relief rod (3a), a pressure relief head (3b), and a return spring (3c). The pressure relief rod (3a) is built into the pressure relief channel (B). The pressure relief head (3b) is connected to the bottom of the pressure relief rod (3a) and exposed at the bottom of the plug body (2d). The return spring (3c) is provided at the bottom of the plug body (2d). The pressure rod (3a) and the plug (2d) are positioned to drive the pressure relief head (3b) to always block the air inlet of the pressure relief channel (B) without external force. The locking button (2b) also has an inclined surface (2b4). When the locking button (2b) is moved laterally to the unlocked state, the inclined surface (2b4) can squeeze the top of the pressure relief rod (3a) to drive the pressure relief rod (3a) to move down and drive the pressure relief head (3b) to release the blockage of the pressure relief channel (B).

10. A water cup, comprising a cup body (4), characterized in that: The cup body (4) is fitted with a container lid as described in any one of claims 1 to 9, the lid body (1) being detachably connected to the cup body (4).

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