Water cup cover with hidden lock catch and water cup using same

Abstract

The utility model relates to a suction nozzle cup cover in a water cup cover, in particular to a water cup cover with a hidden lock catch and a water cup using the water cup cover. A lock catch used on an existing suction nozzle cup cover is completely exposed and easy to damage, and closing of an inner cover and storage of a suction nozzle can be affected. The water cup cover with the hidden lock catch comprises a cup cover body with a containing groove, an inner cover capable of being opened and closed in a rotating mode, a suction nozzle assembly, a lock catch mechanism connected with the inner cover in a locking mode and an unlocking switch capable of unlocking the inner cover and automatically returning, and a cavity is formed in the portion, on the side face of the containing groove, of the cup cover body. The lock catch mechanism comprises a movable lock catch in the cavity, an elastic device and a lock opening formed in the inner cover, the outer end of the lock catch is located in the containing groove, a mounting hole for the lock catch to penetrate through is formed in the side wall of the containing groove, the elastic device can push the lock catch to enable the outer end of the lock catch to be matched with the lock opening to lock the inner cover, and the outer end of the lock catch can be separated from the lock opening to unlock the inner cover by pressing the unlocking switch. The function of the suction nozzle can be used trustingly, and users do not need to worry that the inner cover cannot be closed and locked and the suction nozzle cannot be stored due to damage of the lock catch.

Description

Technical Field

[0001] This utility model relates to a spout cup lid for water cups, and in particular to a water cup lid with a hidden lock and a water cup using the same. Background Technology

[0002] A spout cup lid is a type of cup lid with a built-in spout. The lid body has a receiving groove and is equipped with a rotatable inner lid and a spout with a flexible tube. The inner lid can rotate to close / open the receiving groove in a vertical plane. At the same time, there is a locking mechanism with an unlocking switch between the inner lid and the lid body. When the inner lid is closed and locked, it is laid flat and presses down on the spout. The flexible tube bends, and both the flexible tube and the spout are stored in the receiving groove. When the inner lid is unlocked and opened, the originally bent flexible tube straightens and returns to its original position, and drives the spout to an upright position.

[0003] The existing locking mechanism uses a latch protruding from the receiving groove and a hook fixed on the inner lid to lock the inner lid in place. Both the latch and the hook have heads with protruding hooks. The latch protrudes from the receiving groove and locks / unlocks by sliding horizontally. The latch includes a hook at the front and a slender locking rod at the rear. The lid body has an elastic body that can push the locking rod and an unlocking switch. When the inner lid is rotated open, the latch is exposed in the open receiving groove and is easily damaged due to lack of protection. In particular, the locking rod of the latch is easily damaged and broken, making it impossible to close and lock the inner lid, and the spout cannot be stored. Utility Model Content

[0004] To address the technical problem of existing cup lids with exposed, easily damaged latches that affect the proper closure of the inner lid and spout storage, this invention provides a cup lid with a concealed latch. When the inner lid is open, only the end of the latch protrudes into the receiving groove, and the latch lacks a fragile, thin locking rod. With long-term use, the latch ensures stable and reliable closure of the inner lid. Furthermore, cups with this lid can be used with the spout function without worrying about damage to the latch or the inability to store the spout.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows: A water cup lid with a hidden lock includes a cup lid body with a receiving groove, an inner lid rotatably connected to the cup lid body, a spout assembly that can be housed in the receiving groove, a locking mechanism for locking the inner lid, and an unlocking switch that can unlock the inner lid and automatically return it to its original position. The spout assembly includes a spout rotatably connected to the receiving groove and a bendable elastic tube connected thereto. The characteristic is that the cup lid body has a cavity on the side of the receiving groove. The locking mechanism includes a movable lock in the cavity, an elastic device, and a locking port on the inner lid. The outer end of the lock is located in the receiving groove. The side wall of the receiving groove has an installation hole for the lock. The elastic device can push the lock so that its outer end engages with the locking port to lock the inner lid. Pressing the unlocking switch can drive the outer end of the lock to disengage from the locking port to unlock the inner lid.

[0006] This invention changes the lock used on existing spout-type water cup lids from being completely exposed in the receiving groove to being hidden and installed in a cavity inside the lid body. A flexible device allows the outer end of the lock to move within the receiving groove and engage with the locking lug. When the inner lid rotates to close the receiving groove, the outer end of the lock in the receiving groove engages with the locking lug on the inner lid to lock it. After the inner lid is unlocked and rotated open, the receiving groove opens, with only the outer end of the lock exposed. The rest of the lock is hidden in the cavity on the side of the receiving groove. There is no exposed slender locking rod, making the lock less prone to damage. This prevents problems such as the inner lid failing to close and the spout not being able to be stored due to lock damage. Furthermore, the minimal exposure of the lock makes it less likely to get wet or contaminated with beverages, and the lid is easy to clean.

[0007] As a further improvement and supplement to the above technical solution, this utility model adopts the following technical measures: the lock opening is a lock hole provided on the corresponding latch side of the inner cover; the latch moves back and forth along a straight line perpendicular to the rotation plane of the inner cover, so that the outer end of the latch enters and exits the lock hole to lock / unlock the inner cover; the elastic device can drive the latch forward to enter the lock hole; the unlocking switch can drive the latch backward to exit the lock hole. The latch structure is simplified, eliminating the need for a hook head; the latch engages and matches by extending into the lock hole; during operation, the latch can move back and forth along a straight trajectory perpendicular to the rotation plane of the inner cover, realizing the latch moving forward to enter the lock hole to lock the inner cover or the latch moving backward to exit the lock hole to unlock the inner cover. The elastic device is used to push the latch forward to enter the lock hole, and the unlocking switch is used to drive the latch backward to exit the lock hole.

[0008] The outer end of the latch is provided with a guide surface. The guide surface contacts the rotating and closed inner cover, causing the outer end of the latch to enter the lock hole and lock the inner cover through a trajectory of moving forward and backward. During the rotation and closing of the inner cover, the guide surface contacts the inner cover. As the inner cover rotates and approaches the receiving groove, the guide surface causes the latch, along with its outer end, to move forward and backward, finally entering the lock hole and completing the locking and positioning of the inner cover.

[0009] The guide surface is a wedge-shaped surface at the outer end of the latch. The wedge-shaped surface extends obliquely outward from top to bottom. When the inner cover is rotated and closed, the wedge-shaped surface contacts the inner cover. The inner cover moves downward relative to the wedge-shaped surface, pushing the latch backward until the outer end of the latch aligns with the locking hole of the inner cover and elastically moves forward into the locking hole. The guide surface is a wedge-shaped surface extending obliquely outward from top to bottom. During the rotation and closing process of the inner cover, the inner cover abuts against the wedge-shaped surface and moves downward relative to it, pushing the latch backward until the locking hole on the inner cover aligns with the outer end of the latch. Under the action of the elastic device, the latch elastically moves forward into the locking hole, completing the locking of the inner cover.

[0010] The inner lid has one locking hole on each side, symmetrically distributed along the center line of the inner lid. The cup lid body has cavities on both sides of the receiving groove, and each cavity contains a latch corresponding to the two locking holes and a matching elastic device. The inner lid has two symmetrically distributed locking holes on both sides, and the cavities on both sides of the cup lid body also contain latches corresponding to the locking holes and matching elastic devices. When the inner lid is locked, the locking holes and corresponding latches on both sides engage, and the cup lid body is locked and positioned from both sides of the inner lid.

[0011] The unlocking switch is movably embedded in the cup lid body, with its rear extending out of the cup lid body. The front of the unlocking switch forks to form two forward-extending push arms that engage with two latches. The front ends of the push arms and the corresponding latches are respectively provided with a first driving ramp and a second driving ramp that can slide against each other. Pressing the unlocking switch pushes it forward toward the inner side of the cup lid body. The first driving ramp abuts against the second driving ramp and slides relative to it, pushing the latches backward. An elastic element is provided between the unlocking switch and the cup lid body to push the unlocking switch backward. Pressing the unlocking switch moves it forward toward the inner side of the cup lid body. The two push arms at the front of the unlocking switch, through their sliding ramps against the corresponding latches, push the latches backward. During operation, the first driving ramp at the front end of the push arm abuts against the second driving ramp of the corresponding latch and slides relative to it, causing the corresponding latch to move backward and unlock. The elastic element between the unlocking switch and the cup lid body is used to push the unlocking switch in the opposite direction to pressing.

[0012] The unlocking switch has a limiting port at its rear and between it and any of the push arms. The cup lid body has a mounting groove with a stop bar that can rotate around the central axis of the cup lid body. The cup lid body has an arc-shaped groove along its side that matches the rotation stroke of the stop bar. The stop bar has an operating part extending out of the arc-shaped groove. The stop bar has an arc-shaped segment that can engage with the limiting port. Moving the operating part causes the stop bar to rotate to one end of the arc-shaped groove, and the arc-shaped segment moves into the limiting port to lock the unlocking switch so that it cannot be pressed. Moving the operating part causes the stop bar to rotate to the other end of the arc-shaped groove, and the arc-shaped segment retracts from the limiting port to unlock the unlocking switch so that it can be pressed. The stop bar serves as an additional safety feature, locking the unlocking switch to further enhance its safety. The unlocking switch can only be pressed when it is unlocked to prevent accidental pressing from causing the inner lid to pop open. Moving the operating part causes the stop bar to rotate around the central axis of the cup lid body, causing the arc-shaped segment on the stop bar to engage or disengage from the limiting port on the unlocking switch, thus locking or unlocking the unlocking switch.

[0013] The stop bar has an elastic arm extending parallel to its length on one side of the concave arc. The end of the elastic arm has an arc-shaped protrusion facing away from the stop bar. The mounting groove has multiple matching arc-shaped concave protrusions facing the arc-shaped protrusion on the wall surface corresponding to the elastic arm along its extension direction. When the stop bar rotates around the central axis of the cup lid body, the elastic arm bends / resets to cause the arc-shaped protrusions to disengage / engage with the arc-shaped concave, forming a damping structure to adjust the stop bar's rotation speed. The damping structure controls the stop bar's rotation speed and improves the feel of the actuation operation. During operation, the elastic arm repeatedly bends and resets, causing the arc-shaped protrusions to alternately disengage and engage with the arc-shaped concave, achieving speed control and a smooth actuation feel during the stop bar's rotation.

[0014] The cup lid body includes a top cover and a bottom cover that are detachably connected. The bottom cover consists of an integral base and a surrounding edge that continuously surrounds and extends upwards around its perimeter. The base has a through hole for water absorption. The top cover is fastened to the top of the cylindrical cavity formed by the surrounding edge. The top cover has a recessed center to form the receiving groove. The cylindrical cavity around the recessed center forms a cavity on the side of the cup lid body in the receiving groove. The cup lid body consists of a detachably connected top cover and bottom cover, which facilitates assembly, production, and subsequent cleaning. The bottom cover forms a cylindrical cavity that can serve as a cavity by setting a surrounding edge that extends above the base. The receiving groove is formed by the recessed center of the top cover. The top cover and the top of the cylindrical cavity are fastened together to achieve a detachable connection between the top cover and the bottom cover. At the same time, the cylindrical cavity around the receiving groove can also serve as a cavity on the side of the receiving groove for installing the movable latch and elastic device of the locking mechanism.

[0015] The second objective of this invention is to provide a water cup, comprising a cup body and a lid, characterized in that the lid is one of the aforementioned water cup lids with a hidden lock. Using the aforementioned water cup lid with a hidden lock as the lid allows for safe use of the spout on the lid without worrying about damage to the lid's locking mechanism, preventing the spout from being stored properly.

[0016] The beneficial technical effects of this utility model are as follows: The locking mechanism of the spout-type water cup lid is changed from being exposed in the existing receiving groove to being hidden in the cavity inside the cup lid body. When the locking mechanism is working, only the outer end moves in the receiving groove and engages with the locking port on the side of the inner lid. When the inner lid is rotated to close the receiving groove, the outer end of the locking mechanism engages with the locking port on the inner lid to lock the inner lid. After the inner lid is unlocked and rotated open, only the outer end of the locking mechanism is exposed in the open receiving groove, and the rest of the locking mechanism is hidden in the cavity on the side of the receiving groove. There is no exposed slender locking rod, so the locking mechanism is not easy to be damaged. There is no risk of the inner lid not being able to close or the spout not being able to be stored due to the damage of the locking mechanism. At the same time, the locking mechanism is less exposed, so it is not easy for water or beverages in the cup to get on it, and the cup lid is easy to clean. Attached Figure Description

[0017] Figure 1 Exploded view of the structure of Example 1.

[0018] Figure 2 Example 1: Schematic diagram after removing the top cover Figure 1 .

[0019] Figure 3 Example 1: Schematic diagram after removing the top cover Figure 2 .

[0020] Figure 4 : Bottom view after the top cover and bottom cover are separated in Example 1.

[0021] In the diagram: 1. Cup lid body, 1-1. Top lid, 1-11. Vertical wall, 1-2. Bottom lid, 1-21. Base, 1-22. Surrounding edge, 2. Inner lid, 3. Suction nozzle assembly, 3-1. Suction nozzle, 3-2. Elastic tube, 4. Unlock switch, 4-1. Push arm, 4-2. First driving slope, 4-3. Limiting port, 4-4. Cross-shaped positioning post, 5. Lock, 5-1. Wedge-shaped surface, 5-2. Second driving slope, 6. Receiving groove, 7. Mounting hole, 8. Locking spring, 9. Locking opening, 10. Elastic element, 11. Stop bar, 11-1. Arc-shaped segment, 11-2. Operating part, 11-3. Elastic arm, 11-31. Arc-shaped protrusion, 12. Arc-shaped groove, 13. Arc-shaped concave, 14. Hanging ring, 15. Hanging strap, 16. Through hole, 17. Limiting protrusion. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1-4As shown, Embodiment 1 is a water cup lid with a hidden lock, including a cup lid body 1 with a receiving groove 6, an inner lid 2 rotatably connected to the cup lid body 1, a spout 3-1 assembly 3 that can be stored in the receiving groove 6, a locking mechanism for locking the inner lid 2, and an unlocking switch 4 that can unlock the inner lid 2 and automatically return it to its original position. The spout 3-1 assembly 3 includes a spout 3-1 rotatably connected to the receiving groove 6 and a flexible tube 3-2 connected thereto. The cup lid body 1 has a cavity on the side of the receiving groove 6. The locking mechanism includes a movable lock 5 in the cavity, an elastic device, and a locking port 9 on the inner lid 2. The outer end of the lock 5 is located in the receiving groove 6. The side wall of the receiving groove 6 has a mounting hole 7 for the lock 5 to pass through. The elastic device can push the lock 5 so that its outer end engages with the locking port 9 to lock the inner lid 2. Pressing the unlocking switch 4 can drive the outer end of the lock 5 to disengage from the locking port 9 and unlock the inner lid 2. In this embodiment, the elastic device is a locking spring 8 that pushes the locking buckle 5 to elastically reset. The cup lid body 1 includes a top cover 1-1 and a bottom cover 1-2 that are detachably connected. The bottom cover 1-2 is composed of a base 1-21 with an integral structure and a rim 1-22 that continuously surrounds and extends upward around its perimeter. The base 1-21 is provided with a through hole 16 for water absorption. The top cover 1-1 is fastened to the top of the cylindrical cavity formed by the rim 1-22. The top cover 1-1 is recessed in the middle to form the receiving groove 6. The cylindrical cavity around the recess forms a cavity on the side of the cup lid body 1 in the receiving groove 6.

[0024] The locking mechanism of the spout-type water cup lid has been changed from being exposed in the receiving groove to being hidden in the cavity inside the lid itself. When the locking mechanism is in operation, only the outer end moves within the receiving groove and engages with the locking slot on the side of the inner lid. When the inner lid is rotated to close the receiving groove, the outer end of the locking mechanism engages with the locking slot on the inner lid to lock the inner lid. After the inner lid is unlocked and rotated open, only the outer end of the locking mechanism is exposed in the open receiving groove, while the rest of the locking mechanism is hidden in the cavity on the side of the receiving groove. There is no exposed slender locking rod, making the locking mechanism less prone to damage. This eliminates the potential problems of the inner lid not being able to close or the spout not being able to be stored due to lock damage. At the same time, the lock is less exposed, making it less likely to get water or beverages from the cup, and the lid is easy to clean.

[0025] Preferably, the locking opening 9 is a locking hole provided on the inner cover 2 on the side corresponding to the locking buckle 5. The locking buckle 5 moves back and forth along a straight line perpendicular to the rotation plane of the inner cover 2, so that the outer end of the locking buckle 5 enters and exits the locking hole to lock / unlock the inner cover 2. The locking spring 8 drives the locking buckle 5 to move forward into the locking hole. Pressing the unlocking switch 4 can drive the locking buckle 5 to move backward out of the locking hole. The outer end of the locking buckle 5 is provided with a guide surface. The guide surface contacts the rotated and closed inner cover 2, so that the outer end of the locking buckle 5 enters the locking hole to lock the inner cover 2 through a trajectory of moving forward and backward. In this embodiment, the guide surface is a wedge-shaped surface 5-1 provided at the outer end of the latch 5. The wedge-shaped surface 5-1 extends obliquely outward from top to bottom. When the inner cover 2 is rotated and closed, the wedge-shaped surface 5-1 contacts the inner cover 2. The inner cover 2 pushes the latch 5 backward by moving downward relative to the wedge-shaped surface 5-1. When the inner cover rotates to the point where the outer end of the latch 5 is aligned with the lock hole of the inner cover 2, the latch spring 8 drives the outer end of the latch to move forward elastically into the lock hole, thereby locking the inner cover.

[0026] To improve the stability and reliability of the inner cover locking mechanism, this embodiment preferably features a locking hole symmetrically arranged on each side of the inner cover 2 along its centerline. The top cover 1-1 snaps into the cylindrical cavity formed by the surrounding edge 1-22, providing the necessary space for installing the locking buckles 5 corresponding to the two locking holes and the matching locking springs 8. The two sets of matching locking buckles and locking springs are arranged on both sides of the receiving groove. When the inner cover is closed and locked, the two locking buckles simultaneously lock the inner cover from both sides.

[0027] The unlocking switch 4 is movably embedded in the cup lid body 1. The rear of the unlocking switch 4 extends out of the cup lid body 1 for operation. In this embodiment, the rear of the unlocking switch extends from the switch hole opened on the rim 1-22. The front of the unlocking switch 4 is forked to form two forward-extending push arms 4-1 that match two latches 5. The front ends of the push arms 4-1 and the corresponding latches 5 are respectively provided with a first driving inclined surface 4-2 and a second driving inclined surface 5-2 that can slide together. Pressing the unlocking switch 4 pushes it forward toward the inside of the cup lid body 1. The first driving inclined surface 4-2 abuts against the second driving inclined surface 5-2 and slides relative to it to push the latches 5 backward. An elastic element 10 is provided between the unlocking switch 4 and the cup lid body 1 to push the unlocking switch 4 to move backward. As shown in the figure, the elastic element 10 is a compressed unlocking spring. One end of the unlocking spring pushes inward against the limiting protrusion 17 provided on the base 1-21, and the other end pushes outward through the cross-shaped positioning post 4-4 provided inside the unlocking switch 4 to push the unlocking switch 4 to move backward.

[0028] To further improve the safety of the unlocking switch and prevent accidental pressing of the unlocking switch from causing the inner cover to pop up, a limiting port 4-3 is provided between the rear of the unlocking switch 4 and any push arm 4-1. The cup lid body 1 has a mounting groove with a stop bar 11 that can rotate around the central axis of the cup lid body 1. In this embodiment, the mounting groove is an arc-shaped gap between the arc-shaped vertical wall 1-11 on the inner side of the bottom surface of the top cover 1-1 and the adjacent rim 1-22. The cup lid body 1 has an arc-shaped groove 12 along its side that matches the rotation stroke of the stop bar 11. In this embodiment, the arc-shaped groove 12... 2. On the perimeter 1-22, the stop bar 11 is provided with an operating part 11-2 extending out of the arc groove 12. The stop bar 11 is provided with an arc segment 11-1 that can be inserted into the limiting port 4-3. By moving the operating part 11-2, the stop bar 11 is rotated to one end of the arc groove 12, and the arc segment 11-1 moves into the limiting port 4-3 to lock the unlocking switch 4 so that it cannot be pressed to work. By moving the operating part 11-2, the stop bar 11 is rotated to the other end of the arc groove 12, and the arc segment 11-1 is removed from the limiting port 4-3 to unlock the unlocking switch 4 so that it can be pressed to work.

[0029] The retaining strip acts as an additional safety feature, locking the unlocking switch and preventing it from being pressed or pushed, thus enhancing the safety of its use. The unlocking switch can only be pressed or pushed when it is in the unlocked state, effectively preventing accidental pressing of the unlocking switch from causing the inner cover to suddenly unlock and pop up, resulting in water leakage. Moving the operating part causes the retaining strip to rotate around the central axis of the cup lid body, causing the arc-shaped segment on the retaining strip to engage or disengage from the limiting slot on the unlocking switch, thereby locking or unlocking the unlocking switch.

[0030] To improve the tactile feel of the arc-shaped stop bar during operation, the stop bar 11 has an elastic arm 11-3 extending parallel to its length on the concave side of the arc. The end of the elastic arm 11-3 has an arc-shaped protrusion 11-31 facing away from the stop bar 11. The mounting groove, along its extension direction, has multiple matching arc-shaped concave sections 13 facing the arc-shaped protrusion 11-31 on the wall surface of the corresponding elastic arm 11-3. Figure 4 Specifically, multiple arc-shaped recesses 13 are provided on the vertical wall 1-11. When the baffle 11 rotates around the central axis of the cup lid body 1 along the mounting groove, the elastic arm 11-3 alternately bends / resets, causing the arc-shaped protrusions 11-31 to alternately disengage / engage with the arc-shaped recesses 13. The arc-shaped protrusions and arc-shaped recesses match to form a damping structure that can adjust the rotation speed of the baffle 11 and improve the operating feel.

[0031] Example 2 is a water cup, comprising a cup body and a lid, wherein the lid is the water cup lid with a hidden lock described in Example 1. For convenient carrying of the water cup, such as... Figure 1 and Figure 2As shown, a hanging ring 14 and a hanging strap 15 can also be provided on the side of the cup lid. The water cup of Embodiment 2 is matched with the water cup lid with hidden lock in Embodiment 1. You can use the spout on the cup lid with confidence without worrying that the lock of the cup lid will be damaged and cause the inner lid to not be able to close and lock or the spout to not be able to be stored.

Claims

1. A cup cover with hidden lock, comprising a cup cover body (1) provided with a containing groove (6), an inner cover (2) rotatably connected to the cup cover body (1), a mouthpiece (3-1) assembly (3) capable of being contained in the containing groove (6), a lock mechanism for locking the inner cover (2), and an unlocking switch (4) capable of unlocking the inner cover (2) and automatically returning, wherein the mouthpiece (3-1) assembly (3) comprises a mouthpiece (3-1) rotatably connected in the containing groove (6) and a flexible tube (3-2) connected to the mouthpiece (3-1) and capable of being bent. The cup cover body (1) is provided with a cavity on the side of the accommodating groove (6), the locking mechanism comprises a movable lock (5) arranged in the cavity, elastic means and a lock opening (9) arranged on the inner cover (2), the outer end of the lock (5) is located in the accommodating groove (6), the side wall of the accommodating groove (6) is provided with a mounting hole (7) for passing through the lock (5), the elastic means can push the lock (5) to make the outer end thereof fit the lock opening (9) to lock the inner cover (2), and pressing the unlocking switch (4) can drive the outer end of the lock (5) to be separated from the lock opening (9) to unlock the inner cover (2).

2. The cup cover with hidden lock according to claim 1, characterized in that The lock opening (9) is a lock hole arranged on the side of the inner cover (2) corresponding to the lock (5), the lock (5) moves forward and backward along a straight line perpendicular to the rotating plane of the inner cover (2), so that the outer end of the lock (5) enters and exits the lock hole to lock / unlock the inner cover (2), and the elastic means can drive the lock (5) to tend to move forward into the lock hole, and the unlocking switch (4) can drive the lock (5) to move backward out of the lock hole.

3. The cup cover with hidden lock according to claim 2, characterized in that The outer end of the lock (5) is provided with a guide surface, the guide surface contacts the rotating closed inner cover (2) to make the outer end of the lock (5) enter the lock hole to lock the inner cover (2) through the track of moving backward and then moving forward.

4. The cup cover with hidden lock according to claim 3, characterized in that The guide surface is a wedge surface (5-1) arranged on the outer end of the lock (5), the wedge surface (5-1) extends outwardly from top to bottom, and when the inner cover (2) is rotatingly closed, the wedge surface (5-1) contacts the inner cover (2), the inner cover (2) moves downward along the wedge surface (5-1) relative to the wedge surface (5-1) to push the lock (5) to move backward, and the outer end of the lock (5) is aligned with the lock hole of the inner cover (2) and elastically moves forward into the lock hole.

5. The cup cover with hidden lock according to claim 2, wherein The inner cover (2) is provided with a lock hole on each side, and the two lock holes are symmetrically distributed along the center line of the inner cover (2), the cup cover body (1) is provided with a cavity on both sides of the accommodating groove (6), and the cavity is provided with a lock (5) corresponding to the two lock holes and matched elastic means.

6. The cup cover with a hidden lock according to claim 5, wherein The unlocking switch (4) is movably embedded in the cup cover body (1), the rear part of the unlocking switch (4) extends out of the cup cover body (1), the front part of the unlocking switch (4) is bifurcated to form two forward extending push arms (4-1) matched with the two locks (5), the front end of the push arm (4-1) and the corresponding lock (5) are respectively provided with a first driving slope (4-2) and a second driving slope (5-2) which can be slidably attached, pressing the unlocking switch (4) pushes it to move forward to the inner side of the cup cover body (1), the first driving slope (4-2) abuts against and slides relative to the second driving slope (5-2) to push the lock (5) to move backward, and a resilient member (10) is arranged between the unlocking switch (4) and the cup cover body (1) to push the unlocking switch (4) to tend to move backward.

7. The cup cover with a hidden lock according to claim 6, characterized in that The unlocking switch (4) is provided with a limiting opening (4-3) between its rear part and any push arm (4-1), the cup cover body (1) is provided with a mounting groove, a blocking strip (11) rotatable around the central axis of the cup cover body (1) is arranged in the mounting groove, the cup cover body (1) is provided with an arc-shaped groove (12) arranged along the side surface and matched with the rotating stroke of the blocking strip (11), the blocking strip (11) is provided with an operation part (11-2) extending out of the arc-shaped groove (12), the blocking strip (11) is provided with an arc-shaped section (11-1) capable of being clamped into the limiting opening (4-3), the operation part (11-2) is actuated to rotate the blocking strip (11) to one end of the arc-shaped groove (12), the arc-shaped section (11-1) is moved into the limiting opening (4-3) to lock the unlocking switch (4) so that the unlocking switch (4) cannot be pressed to work, the operation part (11-2) is actuated to rotate the blocking strip (11) to the other end of the arc-shaped groove (12), the arc-shaped section (11-1) is moved out of the limiting opening (4-3) to unlock the unlocking switch (4) so that the unlocking switch (4) can be pressed to work.

8. The cup cover with a hidden lock according to claim 7, characterized in that The blocking strip (11) is provided with an elastic arm (11-3) extending in parallel along the length direction of the blocking strip (11) on one side of the blocking strip (11) recessed in an arc shape, the end of the elastic arm (11-3) is provided with an arc-shaped protrusion (11-31) facing away from the blocking strip (11), the mounting groove is provided with a plurality of arc-shaped recesses (13) facing the arc-shaped protrusion (11-31) on the wall surface corresponding to the side of the elastic arm (11-3) along the extension direction of the mounting groove, the arc-shaped recesses (13) are matched with the arc-shaped protrusion (11-31), when the blocking strip (11) rotates around the central axis of the cup cover body (1), the elastic arm (11-3) makes the arc-shaped protrusion (11-31) out of the arc-shaped recess (13) and buckles into the arc-shaped recess (13) through bending and resetting, so as to form a damping structure for adjusting the rotating speed of the blocking strip (11).

9. The cup cover with a hidden lock according to claim 1, wherein The cup cover body (1) comprises a top cover (1-1) and a bottom cover (1-2) arranged in a top-down manner and detachably connected, the bottom cover (1-2) is composed of a base (1-21) of an integral structure and a surrounding edge (1-22) continuously surrounding and extending upward along the peripheral edge of the base (1-21), the base (1-21) is provided with a through hole (17) for water absorption, the top cover (1-1) is buckled at the top end of the cylinder cavity formed by the surrounding edge (1-22), the middle recess of the top cover (1-1) forms the accommodating groove (6), and the cylinder cavity around the recess forms a cavity arranged on the side of the accommodating groove (6) of the cup cover body (1).

10. A drinking cup comprising a cup body and a cup lid, characterized in that The cup cover is the water cup cover with hidden lock buckle according to any one of claims 1 to 9.

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