An easy-open lid structure and a splash-proof cup lid using the same

Abstract

The application discloses an easy-to-open cover structure and a splash-proof cup cover using the same. The easy-to-open cover structure comprises a lower cover body provided with a drinking water nozzle, an outer wall of the drinking water nozzle being provided with a clamping groove; an upper cover body rotatably connected with the lower cover body; a screw cap rotatably connected with the upper cover body and arranged correspondingly to the drinking water nozzle, the outer wall of the screw cap being provided with a resisting protrusion; a sliding lock head, a lower end surface of the upper cover body being provided with a sliding limiting part, the sliding lock head being slidably connected with the sliding limiting part and being movable relative to the drinking water nozzle; the sliding lock head being arranged correspondingly to the clamping groove; the sliding lock head being provided with a plug capable of being inserted into the clamping groove and a driven part; a first elastic member, two ends of the first elastic member being respectively abutted against the sliding limiting part and the sliding lock head, the first elastic member being used for keeping the plug inserted into the clamping groove; when the screw cap is forced to rotate counterclockwise or clockwise, the resisting protrusion abuts against the driven part, the sliding lock head moves away from the drinking water nozzle, the first elastic member is compressed, the plug is separated from the clamping groove, and the upper cover body can be rotated relative to the lower cover body to be opened.

Description

Technical Field

[0001] This application relates to the field of water cup device technology, specifically an easy-open lid structure and a splash-proof cup lid using the structure. Background Technology

[0002] Currently, in the field of container opening and closing sealing structures, such as the lids of water cups, early designs used threaded connections. The lid was screwed on to open or close the cup body. Generally, one direction of rotation was used to tighten and the other to loosen the connection. This traditional connection structure is inconvenient for some users because each user has different habits and force application during the opening process, and it is troublesome to distinguish between the tightness and looseness of the connection. Summary of the Invention

[0003] This invention addresses the above-mentioned problems by proposing an easy-open lid structure and a splash-proof cup lid using this structure, aiming to solve the technical problems in the background art.

[0004] To achieve the above objectives, the present invention provides an easy-open lid structure, comprising:

[0005] The lower cover is provided with a drinking spout, and the outer wall of the drinking spout is provided with a retaining groove;

[0006] An upper cover body, which is rotatably connected to the lower cover body;

[0007] A screw cap is rotatably connected to the upper cover and is positioned corresponding to the drinking spout. A support protrusion is provided on the outer wall of the screw cap.

[0008] The sliding lock head has a sliding limiting part on the lower end face of the upper cover, and the sliding lock head is slidably connected to the sliding limiting part, allowing it to move relative to the drinking spout; the sliding lock head is provided with a retaining groove; the sliding lock head has a plug that can be inserted into the retaining groove, and a driven part corresponding to the abutment protrusion;

[0009] A first elastic element, with its two ends respectively abutting against the sliding limiting part and the sliding lock head, is used to keep the plug inserted into the retaining groove;

[0010] When the screw cap is rotated counterclockwise or clockwise under force, the abutment protrusion abuts against the driven part, the sliding lock moves away from the drinking spout, compressing the first elastic element. After the plug disengages from the retaining groove, the upper cover can rotate and open relative to the lower cover.

[0011] Furthermore, a torsion spring is provided at the rotatable connection between the upper cover and the lower cover.

[0012] Furthermore, the sliding limiting part includes a first guide plate, a second guide plate, and a stop plate connected to the lower end face of the upper cover; the first guide plate, the second guide plate, and the stop plate form a sliding connecting groove to accommodate the sliding lock head; the outer wall of the sliding lock head is provided with a barb, and the first guide plate and / or the second guide plate are provided with buckle holes that match the barb.

[0013] Furthermore, the driven part is provided with limiting arms at both ends, and the two limiting arms are curved and transitioned; when the screw cap rotates relative to the drinking spout, the abutting protrusion is limited between the two limiting arms.

[0014] Furthermore, the end of the supporting protrusion is chamfered.

[0015] Furthermore, the outer wall of the screw cap is provided with friction protrusions, and the upper surface of the screw cap is provided with an opening indicator mark.

[0016] The present invention also provides a splash-proof cup lid, including an easy-open lid structure as described above; and further including:

[0017] An inner cover is provided between the screw cap and the drinking spout; a limiting ring edge is provided on the outer edge of the inner cover, and a limiting groove is provided on the upper cover to receive and fit the limiting ring edge;

[0018] Pressure relief structure; the screw cap can move relative to the inner cover along its axial direction, and the abutment protrusion is located between the sliding lock head and the lower end face of the upper cover; the pressure relief structure is used to make the drinking nozzle and the inner cavity of the screw cap communicate when the screw cap is far away from the upper end face of the lower cover by a predetermined distance.

[0019] Furthermore, the pressure relief structure includes a first sealing gasket, a second elastic element, a connecting baffle, a through hole on the top of the inner sleeve cover, and an insert rod connected to the inner end face of the screw cap; the first sealing gasket is connected to the top of the outer end cover of the inner sleeve cover; the insert rod extends into the inner sleeve cover through the through hole, and there is a gap between the insert rod and the through hole; the connecting baffle is connected to the end of the insert rod; one end of the second elastic element abuts against the top of the inner end cover of the inner sleeve cover, and the other end abuts against the connecting baffle, keeping the inner end face of the screw cap pressed against the first sealing gasket, preventing the through hole from communicating with the space enclosed by the inner wall of the screw cap and the inner sleeve cover.

[0020] Furthermore, a locking step is provided between the two limiting arms, and the locking step surrounds a locking groove that restricts the rotation of the abutment protrusion; when the screw cap moves away from the upper end face of the lower cover and disengages from the locking groove, the abutment protrusion can rotate to abut the driven part.

[0021] Furthermore, it includes a second sealing gasket located on the top of the inner end cover of the inner sleeve cover, and when the plug is inserted into the retaining groove, the drinking nozzle port abuts against the second sealing gasket.

[0022] Compared with existing technologies, the easy-open lid structure and anti-splash cup lid using the present invention allow users to open the lid without distinguishing between clockwise or counterclockwise rotation. Furthermore, it eliminates the need for traditional threaded connections that require multiple, time-consuming, and laborious turns of the cap. Instead, a small rotation angle is used to convert the rotation distance into the distance the plug disengages from the retaining groove, enabling subsequent lid opening. This convenient, quick, and effortless design significantly enhances the user experience. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a splash-proof cup lid structure according to this application.

[0024] Figure 2 This is a schematic diagram of the structure of an anti-splash cup lid when the upper cover is open relative to the lower cover.

[0025] Figure 3 This is a stepped cross-sectional view of a splash-proof cup lid according to this application.

[0026] Figure 4 This is a cross-sectional view of the anti-splash cup lid of this application when the screw cap is pulled upwards.

[0027] Figure 5 This is a schematic diagram of an easy-open lid structure and an anti-splash cup lid upper cover structure according to this application.

[0028] Figure 6 This application presents a schematic diagram of an easy-open lid structure and a screw cap and sliding lock for an anti-splash cup lid.

[0029] Figure 7 This is a schematic diagram of an easy-open lid structure and a screw cap structure for an anti-splash cup lid according to this application.

[0030] Figure 8 This is a schematic diagram of the inner sleeve structure of an anti-splash cup lid according to this application.

[0031] Figure 9 This is a schematic diagram of an easy-open lid structure and a sliding lock structure for an anti-splash cup lid according to this application.

[0032] The reference numerals in the figure are as follows: 1. Lower cover; 2. Drinking spout; 210. Holding groove; 3. Upper cover; 310. Sliding limiting part; 311. First guide plate; 312. Second guide plate; 313. Stop plate; 314. Sliding connecting groove; 315. Buckle hole; 320. Limiting groove; 4. Tightening cap; 410. Supporting protrusion; 420. Friction protrusion; 430. Opening indicator; 5. Sliding lock head; 5 10. Plug; 520. Driven part; 521. Limiting arm; 530. Barb; 540. Locking step; 550. Locking groove; 6. First elastic element; 7. Rotating shaft; 8. Torsion spring; 9. Inner cover; 910. Limiting ring edge; 920. Through hole; 930. Ring wall; 10. First sealing gasket; 11. Second elastic element; 12. Connecting baffle; 13. Insert rod; 14. Second sealing gasket; 15. Pressure relief area. Detailed Implementation

[0033] Please refer to Figure 1 - Figure 9 This embodiment provides an easy-open lid structure, including:

[0034] The lower cover 1 is provided with a drinking spout 2, and the outer wall of the drinking spout 2 is provided with a retaining groove 210;

[0035] Upper cover 3, which is rotatably connected to lower cover 1;

[0036] The screw cap 4 is rotatably connected to the upper cover 3 and is provided corresponding to the drinking spout 2. The outer wall of the screw cap 4 is provided with a support protrusion 410.

[0037] The sliding lock head 5 has a sliding limiting part 310 on the lower end surface of the upper cover 3. The sliding lock head 5 is slidably connected to the sliding limiting part 310 and can move relative to the drinking spout 2. The sliding lock head 5 is provided with a corresponding retaining groove 210. The sliding lock head 5 has a plug 510 that can be inserted into the retaining groove 210 and a driven part 520 corresponding to the abutment protrusion 410.

[0038] The first elastic member 6 has two ends that respectively abut against the sliding limiting part 310 and the sliding lock head 5, for keeping the plug 510 inserted into the retaining groove 210;

[0039] When the screw cap 4 is rotated counterclockwise or clockwise under force, the abutment protrusion 410 abuts against the driven part 520, the sliding lock head 5 moves away from the drinking spout 2, compressing the first elastic member 6, and after the plug 510 disengages from the retaining groove 210, the upper cover 3 can rotate and open relative to the lower cover 1.

[0040] The working principle of this easy-open lid structure is as follows: When the upper lid 3 and the lower lid 1 are closed, the elastic force of the first elastic element 6 keeps the plug 510 of the sliding lock head 5 inserted into the retaining groove 210. When the user operates to turn the screw cap 4, the direction of force can be either clockwise or counterclockwise. The abutment protrusion 410 rotates relative to the upper lid 3 together with the screw cap 4. During the rotation, the abutment protrusion 410 abuts against the driven part 520, pushing the sliding lock head 5 to move away from the drinking spout 2. As a result, the plug 510 is no longer inserted into the retaining groove 210, and the upper lid 3 can be opened relative to the lower lid 1, so that the drinking spout 2 is exposed, making it convenient for the user to drink.

[0041] When the user releases the screw force on the counter-rotating cap 4, under the elastic force of the first elastic member 6, the driven part 520 of the sliding lock head 5 abuts against the abutting protrusion 410, causing the abutting protrusion 410 to return to its original position. When the user closes the upper cover 3 and the lower cover 1, the plug 510 passes through the retaining groove 210. The outer edge of the retaining groove 210 abuts against the plug 510 of the sliding lock head 5, which can slide through the sliding limit part 310. The sliding lock head 5 moves aside, compressing the first elastic member 6. After the plug 510 passes the outer edge of the retaining groove 210, under the elastic force of the first elastic member 6 pushing the sliding lock head 5, the plug 510 is inserted into the retaining groove 210, maintaining the closed state.

[0042] Therefore, this easy-open cover structure allows users to open the cover without distinguishing between clockwise or counterclockwise rotation. It also eliminates the need for traditional threaded connections that require multiple turns of time-consuming and laborious screwing on the cap. By simply rotating a small angle to convert the rotation distance into the distance that the plug 510 disengages from the retaining groove 210, the subsequent cover opening operation can be performed. This convenient, quick, simple, and labor-saving design greatly enhances the user experience.

[0043] In some embodiments, the upper cover 3 and the lower cover 1 are rotatably connected by a hinge 7. The first elastic element 6 is a spring.

[0044] Preferably, the outer edge of the retaining groove 210 and the plug 510 corresponding to the outer edge of the retaining groove 210 are inclined or curved structures.

[0045] Please refer to Figure 3 A torsion spring 8 is provided at the rotatable connection between the upper cover 3 and the lower cover 1.

[0046] The torsion spring 8 is used to keep the upper cover 3 in the unfolded state after the upper cover 3 and the lower cover 1 are rotated open, so as to avoid obstruction and make it convenient for the user to drink from the drinking spout 2.

[0047] Please refer to Figure 5The sliding limiting part 310 includes a first guide plate 311, a second guide plate 312, and a stop plate 313 connected to the lower end face of the upper cover 3; the first guide plate 311, the second guide plate 312, and the stop plate 313 enclose a sliding connecting groove 314 to accommodate the sliding lock head 5; the outer wall of the sliding lock head 5 is provided with a barb 530, and the first guide plate 311 and / or the second guide plate 312 are provided with buckle holes 315 that match the barb 530.

[0048] Preferably, the length direction of the snap hole 315 and the barb 530 is the same as the direction of movement of the sliding lock head 5 relative to the drinking spout 2. The length range of the snap hole 315 is the movement range of the sliding lock head 5. This structure facilitates the assembly of the sliding lock head 5 and the upper cover 3. During installation, simply place the sliding lock head 5 into the sliding connecting groove 314 and press the barb 530 into the snap hole 315 to complete the quick assembly. The first guide plate 311 and the second guide plate 312 limit and guide the left and right sides of the sliding lock head 5. When the end of the sliding lock head 5 away from the plug 510 is in contact with the stop plate 313, it is the maximum distance away from the drinking spout 2.

[0049] Please refer to Figure 6 , Figure 7 and Figure 3 The driven part 520 is provided with limiting arms 521 at both ends, and the two limiting arms 521 are arc-shaped transitions; when the screw cap 4 rotates relative to the drinking nozzle 2, the abutting protrusion 410 is limited between the two limiting arms 521.

[0050] Two limiting arms 521 restrict and prevent the screw cap 4 from rotating too much. When the abutting protrusion 410 rotates together with the screw cap 4, the abutting protrusion 410 abuts against the driven part 520. When the abutting protrusion 410 approaches or is about to approach the limiting arms 521, the screw cap 4 cannot continue to rotate under the abutment of the limiting arms 521.

[0051] Please refer to Figure 7 The end of the supporting protrusion 410 is chamfered.

[0052] This chamfered end structure of the abutment protrusion 410, combined with the arc-shaped structure of the driven part 520, results in less friction between the abutment protrusion 410 and the driven part 520. The sliding lock head 5 is more easily pushed by the abutment protrusion 410, requiring less effort and reducing wear.

[0053] And after the plug 510 disengages from the retaining groove 210, and the user cancels the screwing of the screw cap 4, under the action of the first elastic member 6, the driven part 520 abuts against the abutting protrusion 410, so that the abutting protrusion 410 automatically returns to the center and corresponds to the retaining groove 210, so that the upper cover 3 can be closed onto the lower cover 1.

[0054] The end of the supporting protrusion 410 is chamfered into a rounded corner or a beveled corner, so that it has a smooth bevel or arc surface.

[0055] Please refer to Figure 6 The outer wall of the screw cap 4 is provided with friction protrusions 420, and the upper surface of the screw cap 4 is provided with an opening indicator mark 430.

[0056] The friction protrusion 420 facilitates the user's twisting, prevents slippage, and ensures effective force output; the lid opening indicator 430 is used to help the user understand how to open the lid.

[0057] This embodiment provides a splash-proof cup lid, including the easy-open lid structure as described above; and also includes:

[0058] Inner cover 9, the inner cover 9 is disposed between the screw cap 4 and the drinking spout 2; the outer edge of the inner cover 9 is provided with a limiting ring edge 910, and the upper cover 3 is provided with a limiting groove 320 for receiving and fitting the limiting ring edge 910.

[0059] Pressure relief structure; the screw cap 4 can move relative to the inner cover 9 along its axial direction, and the abutment protrusion 410 is limited between the sliding lock head 5 and the lower end face of the upper cover 3; the pressure relief structure is used to make the drinking nozzle 2 and the inner cavity of the screw cap 4 communicate when the screw cap 4 is far away from the upper end face of the lower cover 1 by a predetermined distance.

[0060] Due to the connection structure between the limiting groove 320 and the limiting ring edge 910, the inner cover 9 is restricted and cannot move along its axial direction; the inner cover 9 is fixed by the upper cover 3. When the liquid in the cup connected to this cup cover is at a high temperature, the user can operate the screw cap 4 and pull it up away from the upper end face of the lower cover 1. A pressure relief zone 15 is created between the screw cap 4 and the inner cover 9. At this time, the linked pressure relief structure takes effect, allowing the drinking spout 2 to communicate with the inner cavity of the screw cap 4 through the inner cover 9 between the screw cap 4 and the drinking spout 2. That is, the drinking spout 2 is connected to the pressure relief zone 15, which is equivalent to increasing the space in the cup. Thus, the liquid in the cup is depressurized, and the user can then use the aforementioned easy-open lid structure to open the lid without worrying about the high-temperature, high-pressure liquid splashing out and causing dangerous injury. Conversely, when the screw cap 4 is not pulled up, the screw cap 4, the inner cover 9, and the corresponding linked pressure relief structure prevent the drinking spout 2 from communicating with the pressure relief zone 15.

[0061] Preferably, the screw cap 4 is aligned with the axis of the drinking spout 2 and the inner cover 9.

[0062] Please refer to Figure 1 - Figure 9The pressure relief structure includes a first sealing gasket 10, a second elastic element 11, a connecting baffle 12, a through hole 920 on the top of the inner cover 9, and an insert rod 13 connected to the inner end face of the screw cap 4. The first sealing gasket 10 is connected to the top of the outer end cover of the inner cover 9. The insert rod 13 extends into the inner cover 9 through the through hole 920, and there is a gap between the insert rod 13 and the through hole 920. The connecting baffle 12 is connected to the end of the insert rod 13. One end of the second elastic element 11 abuts against the top of the inner end cover of the inner cover 9, and the other end abuts against the connecting baffle 12, keeping the inner end face of the screw cap 4 pressed against the first sealing gasket 10, preventing the through hole 920 from communicating with the space enclosed by the inner wall of the screw cap 4 and the inner cover 9.

[0063] Preferably, the first sealing gasket 10 is an annular body. The hollow inner ring of the first sealing gasket 10 has a through hole 920, which is used to avoid the insertion rod 13. The outer end cap of the inner cover 9 has an annular groove, and the first sealing gasket 10 is placed in the annular groove and connected to the outer end cap of the inner cover 9. The inner end face of the screw cap 4 has a convex ring structure corresponding to the first sealing gasket 10. When the screw cap 4 is not pulled up, the inner end face of the screw cap 4 abuts against the first sealing gasket 10. Even if there is a gap between the insertion rod 13 and the through hole 920, the drinking spout 2 cannot communicate with the pressure relief area 15. The elastic force of the second elastic element 11 pushes the inner end cap of the inner cover 9 and the connecting baffle 12 to keep the inner end face of the screw cap 4 pressed against the first sealing gasket 10.

[0064] When the user pulls out the screw cap 4, the inner end face of the screw cap 4 no longer holds against the first sealing gasket 10, and the gap between the through hole 920 and the insertion rod 13 allows the drinking spout 2 to connect with the pressure relief area 15, achieving the pressure relief effect. When the user releases the screw cap 4, under the action of the second elastic element 11, the inner end face of the screw cap 4 engages with the first sealing gasket 10, automatically sealing and preventing liquid leakage.

[0065] Please refer to Figure 6 and Figure 9 A locking step 540 is provided between the two limiting arms 521. The locking step 540 surrounds a locking groove 550 that restricts the rotation of the abutment protrusion 410. When the screw cap 4 moves away from the upper surface of the lower cover 1 and disengages from the locking groove 550, the abutment protrusion 410 can rotate to abut the driven part 520.

[0066] When the cap 4 is not pulled out, the supporting protrusion 410 is in the locking groove 550, which acts as a lock to prevent the user from accidentally turning the cap 4. The locking groove 550 does not restrict the movement of the cap 4 along its axis. The distance by which the cap 4 moves away from the upper end face of the lower cover 1 from the locking groove 550 is the depth of the locking groove 550, which also corresponds to the maximum distance among the aforementioned predetermined distances.

[0067] As the screw cap 4 moves away from the upper surface of the lower cover 1, the tightness of the inner end face of the screw cap 4 against the first sealing gasket 10 gradually decreases, and the gap gradually increases. The communication between the drinking nozzle 2 and the inner cavity of the screw cap 4 gradually increases. As long as the screw cap 4 moves, so that the inner end face of the screw cap 4 no longer abuts against the first sealing gasket 10, there will be a gap between the two. These distances are all predetermined distances.

[0068] Please refer to Figure 3 and Figure 4 It includes a second sealing gasket 14 disposed on the top of the inner end cover of the inner cover 9. When the plug 510 is inserted into the retaining groove 210, the drinking nozzle 2 port abuts against the second sealing gasket 14.

[0069] Preferably, in the top of the inner end cap of the inner sleeve cover 9, corresponding to the port of the through hole 920, there is an annular wall 930 larger than the diameter of the through hole 920. The annular wall 930 accommodates the second elastic member 11, the connecting baffle 12, and the insert rod 13, preventing the user from damaging this part of the structure by prying at it out of curiosity. The second sealing gasket 14 has a ring structure and is held in place in the groove surrounded by the outer wall of the annular wall 930 and the inner side wall of the inner sleeve cover 9.

Claims

1. An easy-open lid structure, characterized in that, include: The lower cover is provided with a drinking spout, and the outer wall of the drinking spout is provided with a retaining groove; An upper cover body, which is rotatably connected to the lower cover body; A screw cap is rotatably connected to the upper cover and is positioned corresponding to the drinking spout. A support protrusion is provided on the outer wall of the screw cap. The sliding lock head has a sliding limiting part on the lower end face of the upper cover, and the sliding lock head is slidably connected to the sliding limiting part, allowing it to move relative to the drinking spout; the sliding lock head is provided with a retaining groove; the sliding lock head has a plug that can be inserted into the retaining groove, and a driven part corresponding to the abutment protrusion; A first elastic element, with its two ends respectively abutting against the sliding limiting part and the sliding lock head, is used to keep the plug inserted into the retaining groove; When the screw cap is rotated counterclockwise or clockwise under force, the abutment protrusion abuts against the driven part, the sliding lock moves away from the drinking spout, compressing the first elastic element. After the plug disengages from the retaining groove, the upper cover can rotate and open relative to the lower cover.

2. The easy-open lid structure according to claim 1, characterized in that, A torsion spring is provided at the rotatable connection between the upper cover and the lower cover.

3. The easy-open lid structure according to claim 1, characterized in that, The sliding limiting part includes a first guide plate, a second guide plate, and a stop plate connected to the lower end face of the upper cover; the first guide plate, the second guide plate, and the stop plate form a sliding connecting groove to accommodate the sliding lock head; the outer wall of the sliding lock head is provided with a barb, and the first guide plate and / or the second guide plate is provided with a buckle hole that matches the barb.

4. The easy-open lid structure according to claim 1, characterized in that, The driven part is provided with limiting arms at both ends, and the two limiting arms are curved and transitioned; when the screw cap rotates relative to the drinking nozzle, the abutting protrusion is limited between the two limiting arms.

5. The easy-open lid structure according to claim 1, characterized in that, The chamfered end of the supporting protrusion.

6. The easy-open lid structure according to claim 1, characterized in that, The outer wall of the screw cap is provided with friction protrusions, and the upper end face of the screw cap is provided with an opening indicator mark.

7. A splash-proof cup lid, characterized in that, Includes an easy-open lid structure as described in any one of claims 1 to 6; further includes: An inner cover is provided between the screw cap and the drinking spout; a limiting ring edge is provided on the outer edge of the inner cover, and a limiting groove is provided on the upper cover to receive and fit the limiting ring edge; Pressure relief structure; the screw cap can move relative to the inner cover along its axial direction, and the abutment protrusion is located between the sliding lock head and the lower end face of the upper cover; the pressure relief structure is used to make the drinking nozzle and the inner cavity of the screw cap communicate when the screw cap is far away from the upper end face of the lower cover by a predetermined distance.

8. A splash-proof cup lid according to claim 7, characterized in that, The pressure relief structure includes a first sealing gasket, a second elastic element, a connecting baffle, a through hole on the top of the inner cover, and an insert rod connected to the inner end face of the screw cap; the first sealing gasket is connected to the top of the outer end cover of the inner cover; the insert rod extends into the inner cover through the through hole, and there is a gap between the insert rod and the through hole; the connecting baffle is connected to the end of the insert rod; one end of the second elastic element abuts against the top of the inner end cover of the inner cover, and the other end abuts against the connecting baffle, keeping the inner end face of the screw cap pressed against the first sealing gasket, preventing the through hole from communicating with the space enclosed by the inner wall of the screw cap and the inner cover.

9. A splash-proof cup lid according to claim 7, characterized in that, A locking step is provided between the two limiting arms, and the locking step surrounds a locking groove that restricts the rotation of the abutment protrusion; when the screw cap moves away from the upper end face of the lower cover and disengages from the locking groove, the abutment protrusion can rotate to abut the driven part.

10. A splash-proof cup lid according to claim 7, characterized in that, It includes a second sealing gasket located on the top of the inner end cover of the inner sleeve cover. When the plug is inserted into the retaining groove, the drinking nozzle port abuts against the second sealing gasket.

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