Unscrewing type cup cover

Abstract

The utility model relates to the technical field of cup covers, in particular to an unscrewing type cup cover. The cover comprises a cover body, the cover body comprises a connecting part, a liquid outlet is eccentrically formed in the top of the connecting part, and a cover screwing part for opening or sealing and closing the liquid outlet in the rotating process is coaxially and rotationally matched with the top of the connecting part; a locking part capable of doing lifting motion is arranged on a limiting groove of the connecting part in a sliding mode, a positioning pin of the locking part can be in locking fit with a pin hole of the screw cap part in the closed state in the axial direction, and unlocking operation of the pin hole and the positioning pin can be achieved when the locking part doing axial descending motion. According to the utility model, the unlocking is convenient and fast, and the locking effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of cup covers, in particular to a twist-off cup cover. Background Art

[0002] When using kettles, water cups and even wine jugs, lids are often placed on their openings to prevent contaminants from entering their cavities.

[0003] In order to make the cup lid convenient to open, most of the existing quick-open cup lids are as described in the text of a new type of direct drinking cup lid with Chinese patent publication number CN214731067U, including: a connecting part and a cover body, a cylindrical suction nozzle is vertically connected to the top of the connecting part, and a buckle button is installed on one side of the outer periphery; one side of the cover body is buckled with the buckle button, and the side corresponding to the buckle button is hinged with the connecting part. This type of cup lid adopts the form of buckle button installed on one side and buckled with the cover body. Although the cover body is convenient to open and close, it is easy to loosen the buckle button due to accidental touch of the buckle button or vibration and bump, resulting in the cover body being accidentally opened. Although in the further improvement of the spring-covered water cup, a safety mechanism will be set at the buckle button to further lock the cover body; such as using a sliding slide to slide and lock the buckle button or using a swing buckle to lock the connecting part and the cover body. However, the setting of the safety mechanism, on the one hand, the sliding and swinging locking method is still easy to interfere with the closing of the cover body due to accidental touch, which is inconvenient to use; on the other hand, in order to prevent the safety mechanism from automatically resetting and preventing the cover body from closing, this type of safety mechanism is often not provided with an elastic mechanism, and only relies on sliding friction to achieve locking. Therefore, in actual implementation, the locking of the safety mechanism is often prone to failure due to long-term sliding wear of the safety mechanism or under the action of vibration, which urgently needs to be solved. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a twist-off cup lid, which is not only convenient to unlock but also has a good locking effect.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A twist-off cup lid comprises a lid body, wherein the lid body comprises a connecting portion with a liquid outlet eccentrically arranged on the top, a screw-on lid portion coaxially rotatably cooperated at the top of the connecting portion for opening or sealing and closing the liquid outlet during rotation; a locking portion capable of lifting and lowering movement is slidably provided on a limiting groove of the connecting portion, a locating pin of the locking portion can form an axial locking fit with a pin hole of the screw-on lid portion in a closed state, and can realize a disengagement operation of the pin hole and the locating pin when the locking portion makes an axial descending motion.

[0007] As a further solution of the utility model: an unlocking button that can perform lifting and lowering movements is also provided on the connecting part. During the descending process of the unlocking button, the locking part can be squeezed to slide downward until the positioning pin is separated from the pin hole and unlocked; thereafter, after the unlocking button continues to squeeze the locking part downward to separate from the limiting groove, the locking part rotates around the axis of the connecting part so that the positioning pin and the pin hole are misaligned in a top-down perspective.

[0008] As a further solution of the utility model: a wedge block and a limit groove are used as a driving unit, and the driving unit is arranged as a plurality of groups uniformly distributed circumferentially around the axis of the sleeve; the bottom of the unlocking button and the top wedge surface of the wedge block on the locking part form an oblique wedge fit; during the descending process of the unlocking button, the unlocking button presses the wedge block down until the wedge block is separated from the current limit groove, and then the unlocking button continues to press the wedge block down, and the wedge block drives the locking part to rotate in the positive direction due to the oblique wedge fit until the wedge block slides into the limit groove of the next driving unit, at which time the rotary cover part is in a positive openable rotation state.

[0009] As a further solution of the utility model: the limit groove includes a return bevel tooth groove that can form an oblique wedge cooperation with the wedge block, the bevel bottom of the return bevel tooth groove gradually tilts upward along the positive rotation direction of the rotary cover part, and the deep groove side of the return bevel tooth groove is axially penetrated by a straight through opening for the insertion of the unlocking button, and the vertical groove wall where the deep groove side is located forms a guide wall for keeping the wedge block to produce a vertical lifting action; when the unlocking button squeezes the wedge block to slide to the bottom of the current vertical groove wall, the unlocking button continues to squeeze the wedge block and causes the wedge block to produce a rotation action in the positive direction until the wedge block slides into the next return bevel tooth groove, after which the rotary cover part is rotated to open in the positive rotation direction, so that the positioning pin that was originally misplaced in the top view is realigned with the pin hole, and is elastically reset upward and plugged into the pin hole.

[0010] As a further solution of the utility model: a connecting block is also fixed on the connecting part; when the rotary cover part is in a sealed closed state and the positioning pin and the pin hole are locked axially, the positioning pin abuts against the connecting block to prevent the rotary cover part in the closed state from rotating in the reverse rotation direction.

[0011] As a further solution of the utility model: the lower part of the positioning pin protrudes outward to form a stop block, and the connecting blocks are provided with at least two, and one of the connecting blocks prevents the rotating cover part in the closed state from rotating in the reverse rotation direction, and the rotation angle of the locking part in the forward rotation direction is limited by the other connecting block.

[0012] As a further solution of the utility model: a sleeve coaxially arranged with the connecting part is fixed on the inner side of the connecting part, and the limiting groove is located on the sleeve; the unlocking button includes a sliding rod slidably matched with the limiting groove, and the lower end of the sliding rod abuts against the locking part; an anti-slip protrusion is fixed on the sliding rod, and an anti-slip blocking block cooperating with the anti-slip protrusion is fixed on the sleeve; when the anti-slip protrusion abuts against the anti-slip blocking block, the unlocking button can be prevented from sliding upwards.

[0013] As a further solution of the utility model: a return spring for driving the locking part to slide and rise is arranged on the inner side of the connecting part.

[0014] As a further solution of the utility model: a positioning column is coaxially fixed to the inner bottom of the connecting part, a reset spring is sleeved on the positioning column, an abutment disk is sleeved on the positioning column and slides axially along the positioning column, and the abutment disk is arranged between the reset spring and the locking part.

[0015] As a further solution of the utility model: the liquid outlets are arranged in a plurality of circumferentially uniformly distributed around the axis of the connecting portion.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The cover is opened and closed by rotating, which is less likely to be opened by accident than by pressing a button. In addition, the friction between the cover and the connecting part during rotation also increases the difficulty of opening by accident. In addition, in actual implementation, the size of the cover can be controlled so that the cover has a larger coverage of the liquid outlet. Even if the cover is deflected due to accidental touch or vibration, it can still maintain a good sealing effect on the liquid outlet. In addition, a locking part that can move up and down slides on the limiting groove of the connecting part, and the positioning pin of the locking part can form a locking fit with the pin hole of the cover in the closed state along the axial direction. In implementation, the locking part only needs to be pressed down to separate the positioning pin from the pin hole, and the cover can be rotated to open. This not only retains the unlocking of the locking part and the convenience of opening the cover, but also makes the cover have a better locking effect.

[0018] 2. After the unlock button continues to press downward to separate the locking part from the limiting groove, the locking part rotates around the axis of the connecting part so that the positioning pin and the pin hole are misaligned in a top view, so that the cover can be opened at any time. Therefore, during the opening process, the cover can be rotated after pressing the unlock button to unlock, without applying a rotational force to the cover while pressing the unlock button, which further ensures the convenience of opening the cover.

[0019] 3. Since a plurality of driving units are provided, when the wedge block enters the next limit groove, the cover part is opened with positive rotation until the pin hole is rotated again to be directly above the positioning pin, and the positioning pin can be reset upward and inserted into the positioning pin, so that the cover part can be locked again after opening, so as to prevent the cover part from spinning after opening and interfering with the pouring of liquid from the liquid outlet.

[0020] 4. When the wedge block is located in the return bevel groove, it elastically contacts the bottom of the bevel groove. Therefore, a friction force is formed between the wedge block and the bottom of the bevel groove to prevent the wedge block from rotating in the reverse direction. That is, an elastic locking state is formed between the wedge block and the bottom of the next return bevel groove to prevent the opened cover from rotating in the reverse direction. Therefore, after the cover is opened by rotating in the forward direction, when the cover is closed by rotating in the reverse direction, the cover can be reversely rotated and closed without pressing the unlocking button again, which further improves the convenience of opening and closing the cover.

[0021] 5. When the rotary cover is in a closed state and the positioning pin and the pin hole are locked axially, the positioning pin abuts against the connecting block to prevent the rotary cover in the closed state from rotating in the reverse direction.

[0022] 6. The lower part of the positioning pin protrudes outward to form a stop block. There are at least two connecting blocks, and one of the connecting blocks prevents the screw-on cover from rotating in the reverse direction when in the closed state; and the other connecting block limits the rotation angle of the locking part in the forward direction, preventing the user from pressing the unlocking button again after the screw-on cover is opened, causing the locking part to rotate in the forward direction again, thereby effectively limiting the closing direction of the screw-on cover.

[0023] 7. A sleeve coaxially arranged with the connecting part is fixed on the inner side, and a limiting groove is provided on the sleeve, so that the layout of the locking part and the unlocking button on the connecting part is convenient. In addition, the limiting groove can also keep the sliding rod stable in lifting and sliding, and the anti-slip block fixed on the sleeve cooperates with the anti-slip protrusion on the sliding rod, so that when the anti-slip protrusion abuts against the anti-slip block, the unlocking button can be prevented from sliding upward, thereby positioning the maximum rising position of the unlocking button and preventing the unlocking button from separating from the connecting part.

[0024] 8. A return spring is arranged on the inner side of the connecting part to drive the locking part to slide upward, so that the connecting part and the unlocking button can stably move upward and also move downward when pressed.

[0025] 9. The bottom and top of the abutment disk are respectively abutted against the reset spring and the locking portion, and the abutment portion rotates relative to the abutment disk during rotation, which can prevent the abutment disk from generating a torsional force on the reset spring during rotation, thereby effectively improving the service life of the reset spring.

[0026] 10. Several liquid outlets are provided, so that the user can drink water from any of the liquid outlets. In addition, the two liquid outlets can also be provided with different calibers for the user to choose. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0028] Figure 2 It is a structural schematic diagram of the connecting part and the locking part in the utility model.

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the cover body in the utility model.

[0030] Figure 4 It is a schematic diagram of the distribution structure of the wedge block and the return helical tooth groove before the unlocking button is pressed in the utility model.

[0031] Figure 5 It is a schematic diagram of the distribution structure of the wedge block and the return helical tooth groove during the pressing process of the unlocking button in the utility model.

[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the locking part in the utility model.

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the unlocking button in the utility model.

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the utility model when the liquid outlet is closed.

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the utility model when the liquid outlet is opened.

[0036] In the figure: 10, cover body; 11, connecting part; 111, liquid outlet; 112, sleeve; 1121, anti-slip block; 114, positioning column; A, limit groove; 1122, straight through port; 1123, return bevel groove; 11231, vertical groove wall; 11232, bevel groove bottom; 113, connecting block; 12, screw cover part; 121, pin hole; 13, unlocking button; 131, anti-slip protrusion; 132, slide rod; 14, locking part; 1421, stop block; 141, wedge block; 142, positioning pin; 15, reset spring; 151, abutment disk. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] For ease of understanding, the specific structure and working mode of the utility model are further described below in conjunction with the accompanying drawings:

[0039] The specific structure of the utility model refers to Figure 1-9 As shown, the main structure of the cover body 10 includes a connecting portion 11 with a liquid outlet 111 eccentrically arranged on the top and a screw cap portion 12 coaxially rotating at the top of the connecting portion 11 to open or seal and close the liquid outlet 111 during the rotation process. The screw cap portion 12 is used to rotate and open, which is less likely to be opened by accident than by a button. In addition, there is friction resistance between the screw cap portion 12 and the connecting portion 11 during the rotation process, which also increases the difficulty of opening by accident. In addition, in actual implementation, the size of the screw cap portion 12 can be controlled so that the screw cap portion 12 covers a larger range of the liquid outlet 111. Even if the screw cap portion 12 is deflected due to an accidental touch or vibration, it can still maintain a good sealing effect on the liquid outlet 111. Furthermore, a locking portion 14 that can perform a lifting and lowering movement is slidably disposed on the limiting groove A of the connecting portion 11, and the positioning pin 142 of the locking portion 14 can form an axial locking fit with the pin hole 121 of the screw-on cover portion 12 in the closed state, and can realize the unlocking operation of the pin hole 121 and the positioning pin 142 when the locking portion 14 performs an axial descending action; during implementation, it is only necessary to press down the locking portion 14 to separate the positioning pin 142 from the pin hole 121, and then the screw-on cover portion 12 can be rotated to open, which not only retains the unlocking of the locking portion 14 and the convenience of opening the screw-on cover portion 12, but also enables the screw-on cover portion 12 to have a better locking effect.

[0040] Further, such as Figure 1As shown, an unlocking button 13 capable of lifting and lowering is also provided on the connecting portion 11. When the unlocking button 13 descends, it can press the locking portion 14 to slide downward until the positioning pin 142 is separated from the pin hole 121 and unlocked. The locking portion 14 is unlocked by pressing the unlocking button 13. Thereafter, after the unlocking button 13 continues to press the locking portion 14 downward to separate from the limiting groove A, the locking portion 14 rotates around the axis of the connecting portion 11 so that the positioning pin 142 and the pin hole 121 are misaligned in a top-down perspective. In this state, since the positioning pin 142 and the pin hole 121 are misaligned in a top-down perspective, the positioning pin 142 cannot be plugged and locked with the pin hole 121, so that the rotary cover portion 12 is in a state where it can be rotated and opened at any time. In this embodiment, after pressing the unlock button 13 downward, there is no need to continue to apply downward pressure to the unlock button 13, and the unlocked state of the rotary cover part 12 can be maintained; thus, during the opening process, after pressing the unlock button 13 to unlock, the rotary cover part 12 can be rotated, and there is no need to apply rotational force to the rotary cover part 12 while pressing the unlock button 13, which further ensures the convenience of opening the rotary cover part 12.

[0041] In order to realize that after the unlocking button 13 continues to press the locking part 14 downward to separate it from the limiting groove A, the locking part 14 rotates around the axis of the connecting part 11 so that the positioning pin 142 and the pin hole 121 are misaligned in a top view, there are multiple implementation methods in actual implementation.

[0042] Embodiment 1, specifically, as Figure 4 and Figure 5 As shown, a wedge block 141 and a limit groove A are used as a driving unit, and the driving unit is arranged as a plurality of groups uniformly distributed around the axis of the sleeve 112. In the present application, the driving unit preferably adopts four groups. The locking portion 14 is lifted and slid in the limit groove A by the wedge block 141, and the bottom of the unlocking button 13 and the top wedge surface of the wedge block 141 form an oblique wedge fit. During the descent of the unlocking button 13, the unlocking button 13 presses down the wedge block 141 until the wedge block 141 is separated from the current limit groove A. Subsequently, the unlocking button 13 continues to press down the wedge block 141, and the wedge block 141 drives the locking portion 14 to rotate in the positive direction due to the oblique wedge fit, until the wedge block 141 slides into the limit groove A of the next driving unit, and at this time, the rotary cover portion 12 is in a positive openable rotation state. In this embodiment, since a plurality of driving units are provided, when the wedge block 141 enters the next limit groove A, the screw cap part 12 rotates forward to open until the pin hole 121 rotates again to be directly above the positioning pin 142, and the positioning pin 142 can be reset upward and inserted into the positioning pin 142, so that the screw cap part 12 can be locked again after opening to prevent the screw cap part 12 from spinning after opening and interfering with the liquid outlet 111 from pouring liquid.

[0043] In the second embodiment, a torsion spring may be provided on the rotation axis of the locking portion 14 , and after the locking portion 14 is separated from the limiting groove A, the torsion spring drives the locking portion 14 to rotate around the axis of the connecting portion 11 .

[0044] In order to further improve the convenience of closing the cover 12 after opening, based on the first embodiment, Figure 2-5 As shown, the limit groove A includes a return bevel groove 1123 that can form an oblique wedge fit with the wedge block 141; the oblique groove bottom 11232 of the return bevel groove 1123 gradually tilts upward along the positive rotation direction of the rotary cover part 12, and the deep groove side of the return bevel groove 1123 is axially penetrated by a straight opening 1122 for inserting the unlocking button 13, and the vertical groove wall 11231 on the deep groove side forms a guide wall for keeping the wedge block 141 from producing a vertical lifting action. When the unlocking button 13 squeezes the wedge block 141 to slide to the bottom of the current vertical groove wall 11231, the unlocking button 13 continues to squeeze the wedge block 141 and causes the wedge block 141 to rotate in the positive direction until the wedge block 141 slides into the next return bevel groove 1123. Thereafter, the rotary cover portion 12 rotates in the positive rotation direction to open, so that the positioning pin 142 that was originally misplaced in the top view is realigned with the pin hole 121, and is elastically reset upward and inserted into the pin hole 121. Since the wedge block 141 is in elastic contact with the inclined groove bottom 11232 in this state, a friction force is formed between the wedge block 141 and the inclined groove bottom 11232 to prevent the wedge block 141 from rotating in the reverse rotation direction, that is, an elastic locking state is formed between the wedge block 141 and the inclined groove bottom 11232 of the next return inclined tooth groove 1123, so that the opened rotary cover part 12 rotates in the reverse rotation direction; in this elastic locking state, not only there is a certain locking friction force that prevents the wedge block 141 from rotating in the reverse rotation direction, but when a force greater than the locking friction force is manually applied to the rotary cover part 12 in the reverse rotation direction, the positioning pin 142 can be pushed to move by the hole wall of the pin hole 121 of the rotary cover part 12, thereby driving the locking part 14 and the wedge block 141 to rotate as a whole in the reverse direction until the wedge block 141 moves to the previous return inclined tooth groove 1123. In this embodiment, after the cover portion 12 is opened by rotating in the forward direction, when the cover portion 12 is closed by rotating in the reverse direction, there is no need to press the unlocking button 13 again to rotate the cover portion 12 in the reverse direction, thereby further improving the convenience of opening and closing the cover portion 12.

[0045] On the basis of the above, in order to prevent the cover portion 12 from rotating in the reverse direction in the initial closed state, as Figure 2 As shown, a connecting block 113 is also fixed to the connecting portion 11. When the cover portion 12 is in a closed state and the positioning pin 142 is axially locked with the pin hole 121, the positioning pin 142 abuts against the connecting block 113 to prevent the cover portion 12 in the closed state from rotating in the reverse rotation direction.

[0046] Further, such as Figure 2As shown, the lower part of the positioning pin 142 protrudes outward to form a stop block 1421, and the connecting blocks 113 are set to at least two, and one of the connecting blocks 113 prevents the rotary cover part 12 in the closed state from rotating in the reverse rotation direction, and the connecting block 113 is defined as the first connecting block 113 here; and the other connecting block 113 limits the rotation angle of the locking part 14 in the forward rotation direction, and the connecting block 113 is defined as the second connecting block 113 here, to prevent the user from pressing the unlocking button 13 again after the rotary cover part 12 is opened, thereby causing the locking part 14 to rotate in the forward rotation direction again, and finally causing the first connecting block 113 to fail to prevent the rotary cover part 12 in the closed state from rotating in the reverse rotation direction. Therefore, the closing direction of the rotary cover part 12 is effectively limited by the second connecting block 113.

[0047] Specifically, Figure 3 As shown, a sleeve 112 coaxially arranged with the connecting portion 11 is fixed to the inner side of the connecting portion 11, and the limiting groove A is located on the sleeve 112. The unlocking button 13 includes a slide bar 132 slidably matched with the limiting groove A, and the lower end of the slide bar 132 abuts against the locking portion 14, an anti-slipping protrusion 131 is fixed on the slide bar 132, and an anti-slipping blocking block 1121 matched with the anti-slipping protrusion 131 is fixed on the sleeve 112. When the anti-slipping protrusion 131 abuts against the anti-slipping blocking block 1121, the unlocking button 13 can be prevented from sliding upward. A sleeve 112 coaxially arranged with the connecting part 11 is fixed on the inner side, and a limiting groove A is set on the sleeve 112, so as to facilitate the layout of the locking part 14 and the unlocking button 13 on the connecting part 11. In addition, the limiting groove A can also keep the sliding rod 132 stable in lifting and sliding, and the anti-slip block 1121 fixed on the sleeve 112 cooperates with the anti-slip protrusion 131 on the sliding rod 132, so that when the anti-slip protrusion 131 abuts against the anti-slip block 1121, the unlocking button 13 can be prevented from sliding upward, thereby positioning the maximum rising position of the unlocking button 13 and preventing the unlocking button 13 from separating from the connecting part 11.

[0048] like Figure 1 As shown, a return spring 15 is provided inside the connecting portion 11 to drive the locking portion 14 to slide upward, so that the connecting portion 11 and the unlocking button 13 can stably move upward and also move downward when pressed.

[0049] Specifically, Figure 1As shown, a positioning column 114 is coaxially fixed to the inner bottom of the connecting portion 11, and the reset spring 15 is sleeved on the positioning column 114. An abutment disk 151 is sleeved on the positioning column 114 and slides axially along the positioning column 114, and the abutment disk 151 is arranged between the reset spring 15 and the locking portion 14. The bottom and top of the abutment disk 151 are respectively abutted against the reset spring 15 and the locking portion 14, and the locking portion 14 rotates relative to the abutment disk 151 during the rotation process, which can prevent the abutment disk 151 from generating a torsional force on the reset spring 15 during the rotation, and effectively improve the service life of the reset spring 15.

[0050] like Figure 1 As shown, the liquid outlets 111 are arranged to be uniformly distributed around the axis of the connecting portion 11. Figure 2 As shown, a positioning pin 142 and a pin hole 121 are used as a locking unit. The locking unit can be set as three groups uniformly distributed around the axis of the connecting part 11; the connecting block 113 can be set as three groups uniformly distributed around the axis of the connecting part 11; the driving unit can be set as four groups uniformly distributed around the axis of the connecting part 11, and the connection line between the liquid outlet 111 and one of the locking units is distributed radially along the connecting part 11. In this embodiment, the driving unit is set as four groups uniformly distributed around the axis of the connecting part 11, and the opening angle of the screw cap part 12 is specifically defined as 90°. In particular, when the liquid outlet 111 is set as one or two uniformly distributed around the axis of the connecting part 11, the opening method of rotating 90° is adopted, which is not only convenient for drinking water through the liquid outlet 111, but also convenient for users to use any liquid outlet 111 to drink water when two liquid outlets 111 are set. Further, the two liquid outlets 111 can also be set to different calibers for users to choose. In addition, in this embodiment, the locking unit, the connecting block 113, and the driving unit are all provided in multiple groups, thereby ensuring the stability of the locking unit, the connecting block 113, and the driving unit during the locking or driving operation.

[0051] It is worth mentioning that the cup cover of the present application can be used not only for ordinary water cups and thermos cups in actual use, but also for utensils such as kettles or wine jugs.

[0052] Of course, for those skilled in the art, the present invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0054] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A twist-off cup lid, comprising a lid body (10), characterized in that: The cover body (10) comprises a connecting portion (11) with a liquid outlet (111) eccentrically arranged on the top, a rotary cover portion (12) coaxially rotatably engaged with the top of the connecting portion (11) for opening or sealing the liquid outlet (111) during rotation; a locking portion (14) capable of performing a lifting movement is slidably engaged on a limiting groove (A) of the connecting portion (11), a positioning pin (142) of the locking portion (14) can form an axial locking engagement with a pin hole (121) of the rotary cover portion (12) in a closed state, and can realize an unlocking operation of the pin hole (121) and the positioning pin (142) when the locking portion (14) performs an axial descending action.

2. The twist-off cup cover according to claim 1, characterized in that: The connecting portion (11) is also provided with an unlocking button (13) capable of performing a lifting movement. When the unlocking button (13) descends, it can press the locking portion (14) to slide downward until the positioning pin (142) is separated from the pin hole (121) and the locking portion (14) is unlocked. Thereafter, when the unlocking button (13) continues to press the locking portion (14) downward to separate it from the limiting groove (A), the locking portion (14) rotates around the axis of the connecting portion (11) so that the positioning pin (142) and the pin hole (121) are misaligned in a top view.

3. The twist-off cup cover according to claim 2, characterized in that: A wedge block (141) and a limiting groove (A) serve as a driving unit, and the driving unit is arranged as a plurality of groups uniformly distributed circumferentially around the axis of the sleeve (112); the bottom of the unlocking button (13) and the top wedge surface of the wedge block (141) on the locking portion (14) form an oblique wedge fit; when the unlocking button (13) descends, the unlocking button (13) presses the wedge block (141) downward until the wedge block (141) is separated from the current limiting groove (A); then, the unlocking button (13) continues to press the wedge block (141) downward, and the wedge block (141) drives the locking portion (14) to rotate in the forward direction due to the oblique wedge fit, until the wedge block (141) slides into the limiting groove (A) of the next driving unit, and at this time, the rotary cover portion (12) is in a forward openable rotation state.

4. The twist-off cup cover according to claim 3, characterized in that: The limiting groove (A) includes a return helical tooth groove (1123) capable of forming an oblique wedge fit with the wedge block (141), the oblique groove bottom (11232) of the return helical tooth groove (1123) gradually tilts upward along the positive rotation direction of the rotary cover portion (12), and a straight through opening (1122) for inserting the unlocking button (13) is axially penetrated through the deep groove side of the return helical tooth groove (1123), and the vertical groove wall (11231) where the deep groove side is located forms a guide wall for keeping the wedge block (141) to produce a vertical lifting action; 13) When the squeeze wedge (141) slides to the bottom of the current vertical slot wall (11231), the unlocking button (13) continues to squeeze the wedge (141) and causes the wedge (141) to rotate in the positive direction until the wedge (141) slides into the next return bevel tooth groove (1123). Thereafter, the rotary cover (12) rotates in the positive rotation direction to open, so that the positioning pin (142) that was originally misplaced in the top view is realigned with the pin hole (121), and elastically resets upward and is inserted into the pin hole (121).

5. The twist-off cup cover according to claim 4, characterized in that: A connecting block (113) is also fixed to the connecting portion (11); when the rotary cover portion (12) is in a sealed closed state and the positioning pin (142) and the pin hole (121) are locked in the axial direction, the positioning pin (142) abuts against the connecting block (113) to prevent the rotary cover portion (12) in the closed state from rotating in the reverse rotation direction.

6. The twist-off cup cover according to claim 5, characterized in that: The lower portion of the positioning pin (142) protrudes outward to form a rotation-stopping block (1421), and at least two connecting blocks (113) are provided, wherein one of the connecting blocks (113) prevents the rotary cover portion (12) in the closed state from rotating in the reverse rotation direction, and the other connecting block (113) limits the rotation angle of the locking portion (14) in the forward rotation direction.

7. The twist-off cup lid according to any one of claims 2 to 6, characterized in that: A sleeve (112) coaxially arranged with the connecting portion (11) is fixed on the inner side of the connecting portion (11), and the limiting groove (A) is located on the sleeve (112). The unlocking button (13) includes a sliding rod (132) slidably matched with the limiting groove (A), and the lower end of the sliding rod (132) abuts against the locking portion (14). An anti-slipping protrusion (131) is fixed on the sliding rod (132), and an anti-slipping blocking block (1121) matched with the anti-slipping protrusion (131) is fixed on the sleeve (112). When the anti-slipping protrusion (131) abuts against the anti-slipping blocking block (1121), the unlocking button (13) can be prevented from sliding upward.

8. The twist-off cup lid according to any one of claims 1 to 6, characterized in that: A return spring (15) is provided on the inner side of the connecting portion (11) for driving the locking portion (14) to slide upward.

9. The twist-off cup cover according to claim 8, characterized in that: A positioning column (114) is coaxially fixed to the inner bottom of the connecting portion (11), a return spring (15) is sleeved on the positioning column (114), an abutment disk (151) is sleeved on the positioning column (114) and slides axially along the positioning column (114), and the abutment disk (151) is arranged between the return spring (15) and the locking portion (14).

10. The twist-off cup lid according to any one of claims 1 to 6, characterized in that: The liquid outlets (111) are arranged to be a plurality of liquid outlets evenly distributed circumferentially around the axis of the connecting portion (11).

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