Self-locking cup cover and water cup

Abstract

The utility model discloses a self -locking cup cover and water cup, including inner cover and setting on the inner cover can go back and forth rotation outer cover, be provided with the clamping groove on the lateral wall of inner cover, be provided with the inclined track groove on the lateral wall of inner cover, be provided with the sliding element for in the sliding of corresponding inclined track groove on the outer cover, be provided with the self -locking device of radial contraction and radial expansion on the inner cover, and the initial state of self -locking device is radial expansion state. Including cup body, the cup mouth lateral wall of cup body is provided with the clamping salient point cooperation with the clamping groove in the self -locking cup cover of above -mentioned. The utility model its end carries out the cup cover of thread connection with cup body, and user does not need to rotate multiple times to open and close when operating, is extremely convenient on the operation, also avoids the emergence of the situation of not tight cover and the occurrence of water leakage because of not accurate, is more favorable to the convenience of user carries and uses.

Description

Technical Field

[0001] This utility model relates to the field of cup technology, and in particular to a self-locking cup lid and a water cup. Background Technology

[0002] In the current technology, the lids of water cups (including insulated cups and similar products) are connected by threads. This method requires several turns to open and close the lid and the cup body, which is cumbersome for users and cannot meet the needs of modern users who want easy and simple operation. In particular, when the lid is screwed onto the cup body, it may not be aligned properly, resulting in poor sealing and leakage when carried. Therefore, it cannot meet the needs of users and it is necessary to make improvements. Utility Model Content

[0003] (a) Technical problems that need to be solved To address the shortcomings of existing technologies, this utility model provides a self-locking cup lid and water cup. The lid eliminates the need for a threaded connection with the cup body, allowing users to open and close it without having to rotate it multiple times. This makes it extremely convenient to use and avoids leaks caused by misalignment. It also makes it more convenient for users to carry and use.

[0004] (ii) Technical solutions to be adopted To achieve the above objectives, the technical solution adopted by this utility model is as follows: A self-locking cup lid includes an inner lid and an outer lid that can rotate back and forth on the inner lid. The inner lid has a slot on its side wall and an inclined track groove on its outer side wall. The outer lid has a slider for sliding in the corresponding inclined track groove. The inner lid has a self-locking device that can radially contract and radially expand. The self-locking device is initially in a radially expanded state. When the outer lid rotates, it causes the self-locking device to change from the radially expanded state to a radially contracted state. When the outer lid rotates in the opposite direction, it causes the self-locking device to change from the radially contracted state to the radially expanded state.

[0005] Preferably, the inclined track groove is located on the outer wall of the inner cover, and the inclined track groove is evenly spaced on the outer wall of the inner cover. Correspondingly, the sliding member is evenly spaced on the outer cover, and one of the sliding members slides back and forth on the corresponding inclined track groove.

[0006] Preferably, the inclined track groove includes a horizontal recess and an inclined recess disposed on the outer side wall of the inner cover. The horizontal recess and the inclined recess are interconnected. The sliding member slides back and forth on the horizontal recess and the inclined recess. The angle between the inclined recess and the horizontal plane is 75°. Each of the inclined recesses is provided with an elastic steel member.

[0007] Preferably, the sliding element is made of ball bearings or steel balls.

[0008] Preferably, the outer cover is provided with a shell.

[0009] Preferably, the slots are located on the inner wall of the inner cover, and the slots are evenly distributed on the inner wall of the inner cover. The self-locking device includes hooks evenly spaced on the inner cover. Each hook can perform lever movement on the inner cover, and the evenly spaced hooks form a circle on the inner cover. The upper parts of the evenly spaced hooks are bound together by an elastic body, and each hook has a protrusion on its inner side. The inner wall of the outer cover has grooves, the number of which is the same as the number of hooks. The inner wall of the outer cover between adjacent grooves is raised, and the back of the hook is located in the groove so that the hook is in a released state, while all the hooks are in a radially expanded state.

[0010] Preferably, the hook includes an upper body and a vertical body integrally formed with the upper body. The upper body is provided with an arc-shaped groove, and the upper body is provided with protruding shafts integrally formed with the upper body on both sides. The inner cover is provided with a placement groove for placing the protruding shafts, and the inner cover is provided with a placement hole for placing the vertical body.

[0011] Preferably, the inner cover is provided with a pressure plate, and the pressure plate is provided with a barb plate for passing through the upper end face of the inner cover. The pressure plate is provided with a sealing ring, and the sealing ring is provided with a limiting post that passes through the upper end face of the inner cover.

[0012] Preferably, the slots are located on the outer side wall of the inner cover, and the slots are evenly distributed on the outer side wall of the inner cover. The inclined track groove is located above the slots on the outer surface of the inner cover. A retaining ring is provided on the outer cover at the sliding member position. The self-locking device includes a rotary switch provided on the outer cover. The rotary switch is provided with an inverted hook. The inverted hook passes through the upper end face of the outer cover to fix the outer cover. A self-locking pressure ring is provided between the rotary switch and the outer cover. Hooks are evenly arranged on the outer side wall of the rotary switch. All the hooks are evenly arranged and bound together with an elastic ring. The outer surface of the rotary switch is provided with a recess for the back of the hook to be inserted into the loosened state. A protrusion is formed on the outer surface of the rotary switch between adjacent recesses.

[0013] Preferably, a retaining ring is provided on the lower end face of the inner cover, and a sealing ring is fitted over the retaining ring.

[0014] Preferably, the inner cover is provided with a rotational tactile device for making the outer cover rotate in a tactile manner.

[0015] Preferably, the rotating texture device includes a limiting seat disposed on the inner cover, the lower end face of the limiting seat being provided with hooks for preventing the limiting seat from detaching from the inner cover, the hooks being evenly spaced on the lower end face of the limiting seat, the upper end face of the limiting seat being provided with a mounting groove, a reset component and a spring pin being installed in the mounting groove, the upper end face of the limiting seat at the mounting groove position having a notch for the spring pin to enter and exit, and the outer cover having a mating hole corresponding to the limiting seat, the upper part of the limiting seat being located in the mating hole, the inner sidewall of the mating hole having evenly spaced recesses, the inner sidewall of the mating hole between adjacent recesses being protruding.

[0016] In addition, this utility model also provides a water cup, including a cup body, wherein the cup body has a locking protrusion on the side wall of the cup mouth that cooperates with the locking groove in the self-locking cup lid as described above.

[0017] (III) The technical effects to be achieved Compared with the prior art, the beneficial effects of this utility model are: Firstly, the inner cover of this utility model has a slot on its side wall and an inclined track groove on its outer side wall. The outer cover has a sliding member for sliding in the corresponding inclined track groove, and the inner cover has a self-locking device that can radially contract and expand. This structure changes the traditional threaded method, so users do not need to rotate multiple times to open and close the cover, making it extremely convenient to operate. It also avoids water leakage due to misalignment, making it more convenient for users to carry and use. Furthermore, it keeps the number of parts to a minimum, which helps to reduce the difficulty of manufacturing and thus reduces the investment in manufacturing costs.

[0018] Secondly, the self-locking device of this utility model is initially in a radially expanding state. When the outer cover is rotated, it causes the self-locking device to change from the radially expanding state to a radially contracting state. When the outer cover is rotated in the opposite direction, it causes the radially contracting state of the self-locking device to change back to a radially expanding state. In terms of operation, the user does not need to rotate multiple times to open and close the device, which is extremely convenient. It also avoids water leakage due to misalignment, making it more convenient for users to carry and use.

[0019] Thirdly, this utility model includes a cup body, and the side wall of the cup mouth of the cup body is provided with a locking protrusion that cooperates with the locking groove in the self-locking cup lid as described above. It can be seen that when applied to a water cup, it is more convenient for users to open and close the cup without having to rotate it multiple times. It is extremely convenient to operate and also avoids water leakage due to misalignment. It is also more convenient for users to carry and use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall design of a self-locking cup lid with an external card.

[0021] Figure 2 This is an explosion diagram of a self-locking cup lid with an external card, which is part of this utility model.

[0022] Figure 3 This is a three-dimensional view from below of a self-locking cup lid with an external card, according to the present invention.

[0023] Figure 4 This is an exploded view of the outer cover and outer shell of a self-locking cup lid with an outer card, as described in this utility model.

[0024] Figure 5 This is a schematic diagram of the main view of a self-locking cup lid with an external card according to the present invention.

[0025] Figure 6 for Figure 5 Sectional view along the AA direction.

[0026] Figure 7 This is an exploded view of the inner cover, self-locking device, and rotating texture device in a self-locking cup lid with an outer card according to this utility model.

[0027] Figure 8 This is a schematic diagram of the self-locking device in a self-locking cup lid with an external card, as described in this utility model.

[0028] Figure 9 This is a three-dimensional schematic diagram of the outer cover of a self-locking cup lid with an outer card, viewed from below.

[0029] Figure 10This is an exploded view of the pressure plate and sealing ring in a self-locking cup lid with an external card, according to this utility model.

[0030] Figure 11 This is a schematic diagram of the overall design of a self-locking cup lid with an internal locking mechanism.

[0031] Figure 12 This is an exploded view of the outer cover and outer shell of a self-locking cup lid with an inner card in this utility model.

[0032] Figure 13 This is a three-dimensional view from below of a self-locking cup lid with an inner locking mechanism, according to the present invention.

[0033] Figure 14 This is a schematic diagram of the main view of a self-locking cup lid with an internal locking mechanism according to this utility model.

[0034] Figure 15 for Figure 14 Sectional view along the BB direction.

[0035] Figure 16 This utility model is a schematic diagram of a self-locking cup lid with an inner cover in which a rotating tactile device is installed.

[0036] Figure 17 This is an exploded view of the inner cover, self-locking device, and rotating texture device in a self-locking cup lid with an inner card.

[0037] Figure 18 This is a schematic diagram of the assembly of the self-locking device and the rotating texture device in a self-locking cup lid with an internal locking mechanism according to this utility model.

[0038] Figure 19 This is a schematic diagram of the outer cover structure of a self-locking cup lid with an inner card in this utility model.

[0039] Figure 20 This is an exploded view of the inner cover and elastic steel component in a self-locking cup lid with an inner card of this utility model.

[0040] Figure 21 This is a schematic diagram of the inclined groove containing an elastic steel component in the inner cover of a self-locking cup lid with an inner card, which is part of this utility model.

[0041] Figure 22 This is an exploded view of the inner cover and elastic steel component in a self-locking cup lid with an outer clip, according to this utility model.

[0042] Figure 23 This is a schematic diagram of the inclined groove containing an elastic steel component in the inner cover of a self-locking cup lid, which is the outer card of this utility model.

[0043] Figure 24 This is a schematic diagram of the overall design of a self-locking cup lid with an outer clip in a water cup according to the present invention.

[0044] Figure 25 This is an exploded view of a self-locking cup lid with an external clip, which is a feature of this utility model.

[0045] Figure 26 This is a front view schematic diagram of a self-locking cup lid with an external clip in a water cup according to the present invention.

[0046] Figure 27 for Figure 26 Sectional view along the CC direction.

[0047] Figure 28 This is a schematic diagram of the self-locking cup lid with an inner locking mechanism in a water cup according to the present invention.

[0048] Figure 29 This is an exploded view of a self-locking cup lid with an inner locking mechanism, according to the present invention.

[0049] Figure 30 This is a front view schematic diagram of a self-locking cup lid with an inner locking mechanism in a water cup according to the present invention.

[0050] Figure 31 for Figure 30 Sectional view along the DD direction.

[0051] In the diagram: 1, Inner cover; 2, Outer cover; 3, Sliding component; 4, Self-locking device; 5, Outer shell; 6, Rotational sensing device; 11, Slot; 12, Inclined track groove; 13, Pressure plate; 14, Sealing ring; 15, Snap ring; 16, Sealing ring; 41, Hook; 42, Elastic body; 43, Snap protrusion; 44, Groove; 45, Rotary switch; 46, Self-locking pressure ring; 47, Hook; 48, Elastic ring; 49, Recess; 61, Limiting seat; 62, Hook; 63, Reset component; 64, Spring pin; 65, Mating hole; 121, Horizontal recess; 122, Inclined recess; 123, Elastic steel component; 131, Barbed plate; 141, Limiting post; 411, Upper body; 412, Vertical body; 413, Arc groove; 414, Protruding shaft; 451, Barbed hook; 651, Recess.

[0052] 10. Cup body; 20. Self-locking cup lid; 30. Locking protrusion. Detailed Implementation

[0053] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0054] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0055] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0057] Example 1: See Figures 1 to 19A self-locking cup lid includes an inner lid 1 and an outer lid 2 that can rotate back and forth on the inner lid 1. The inner lid 1 has a slot 11 on its side wall and an inclined track groove 12 on its outer side wall. The outer lid 2 has a sliding member 3 for sliding in the corresponding inclined track groove 12. The inner lid 1 has a self-locking device 4 capable of radial contraction and radial expansion. The self-locking device 4 is initially in a radially expanded state. When the outer lid 2 rotates, the self-locking device 4 changes from the initial radially expanded state to a radially contracted state. When the outer lid 2 rotates in the opposite direction, the radially contracted state of the self-locking device 4 changes back to a radially expanded state, ultimately achieving the opening and closing mechanism of this invention. This eliminates the need for a threaded connection between the lid and the cup body, eliminating the need for multiple rotations to open and close the lid. This is extremely convenient and avoids leaks due to misalignment, making it more convenient for users to carry and use.

[0058] Example 2: This can be explained based on Example 1, such as... Figures 1 to 19 As shown, the inclined track grooves 12 are located on the outer wall of the inner cover 1, and the inclined track grooves 12 are evenly spaced on the outer wall of the inner cover 1. Correspondingly, the outer cover 2 is evenly spaced with sliding members 3. Each sliding member 3 slides back and forth on the corresponding inclined track groove 12. This facilitates the outer cover 2 to rotate back and forth on the outer surface of the inner cover 1 without needing to rotate 360°. In this embodiment, there are four inclined track grooves 12 and four sliding members 3. This arrangement is reasonable and facilitates the outer cover 2 to rotate back and forth along the trajectory of the inclined track grooves 12. Further explanation: The inclined track groove 12 includes a horizontal recess 121 and an inclined recess 122 disposed on the outer wall of the inner cover 1. The horizontal recess 121 and the inclined recess 122 are interconnected. The sliding member 3 slides back and forth on the horizontal recess 121 and the inclined recess 122. The angle between the inclined recess 122 and the horizontal plane is 75°. This design eliminates the need for repeated rotations (at least 360 degrees, often requiring multiple rotations) and the requirement for precise alignment in threaded connections to tighten. It also eliminates the need for time-consuming and laborious two-handed operation and repeated checks for tightening. In actual operation, this invention only requires a 75° rotation to open and close, ending the cumbersome era of 360° rotation and significantly improving practicality. Further explanation: Figure 20 , Figure 21 , Figure 22 and Figure 23As shown, each inclined groove 122 is provided with an elastic steel member 123 (in this embodiment, a U-shaped locking bar is used, and the elastic steel mainly includes phase change induced elastic steel, CK75 spring steel, stainless steel spring wire, or SUP6 spring steel, etc.). This is beneficial to prevent the rolling member 5 from easily rolling out and rolling in from the inclined groove 122. When rolling over the elastic steel member 123, there is a stuck sound, which helps to increase the difficulty of rolling and prevents easy accidental opening.

[0059] Among them, such as Figures 1 to 19 As shown, the sliding member 3 is made of ball bearings or steel balls. That is, the outer cover 2 has a hole for the device, and the sliding member 3 is installed in the hole. The sliding member 3 can also rotate in the hole, which is more conducive to sliding back and forth in the inclined track groove 12.

[0060] Example 3: This can be described based on Example 1 or Example 2, such as... Figures 1 to 19 As shown, the outer cover 2 is provided with a shell 5, which provides a certain degree of protection for the outer cover 2. Furthermore, the shell 5 is made of stainless steel, which greatly reduces the production and manufacturing costs.

[0061] Example 4: This can be described based on Example 1, Example 2, or Example 3, such as... Figures 1 to 10 As shown, the slots 11 are located on the inner wall of the inner cover 1, and the slots 11 are evenly distributed on the inner wall of the inner cover 1. This arrangement is reasonable and conducive to the formation of the self-locking device 4. Specifically, the self-locking device 4 includes hooks 41 evenly distributed on the inner cover 1. Each hook 41 can perform lever movement on the inner cover 1, and the evenly distributed hooks 41 form a circle on the inner cover 1. The upper parts of the evenly distributed hooks 41 are bound together by an elastic body 42, and each hook 41 has a locking protrusion 43 on its inner side, as well as the inner side of the outer cover 2. The sidewall is provided with grooves 44, the number of which matches the number of hooks 41. The inner sidewall of the outer cover 2 between adjacent grooves 44 is raised, so that the back of the hook 41 is located in the groove 44, making the hook 41 in a loose state. All the hooks 41 are in a radially expanded state. When the outer cover 2 is rotated, the back of each hook 41 changes from contact with the groove 44 to contact with the raised surface. At this time, the raised surface will push the corresponding hook 41 inward, and then all the hooks 41 will be in a radially contracted state. This facilitates self-locking by the locking protrusions 43 on the hook 41. In this embodiment, three hooks 41 are used, which is reasonable and easy to implement.

[0062] like Figures 1 to 10As shown, further explanation is needed. The hook 41 includes an upper body 411 and a vertical body 412 integrally formed with the upper body 411. The upper body 411 is provided with an arc-shaped groove 413, which facilitates the placement of the elastic body 42. The upper body 411 also has protruding shafts 414 integrally formed with it on both sides. The inner cover 1 has a placement groove for the protruding shafts 414 and a placement hole for the vertical body 412. This arrangement is reasonable and facilitates lever movement of each hook 41 around the protruding shaft 414, thus enabling the locking protrusions 43 on the hook 41 to self-lock or unlock. Further explanation is needed, as... Figures 1 to 10 As shown, the elastomer 42 is a spring ring or spring coil, which is convenient for implementation. To further explain, as... Figures 1 to 10 As shown, a pressure plate 13 is provided on the inner cover 1, and a barb plate 131 for passing through the upper end face of the inner cover 1 is provided on the pressure plate 13. The barb plate 131 helps to prevent the pressure plate 13 from detaching. A sealing ring 14 is provided on the pressure plate 13, and a limiting post 141 for passing through the upper end face of the inner cover 1 is provided on the sealing ring 14. This arrangement helps the pressure plate 13 to seal the mouth of the water cup, achieving a better sealing effect. Furthermore, both the pressure plate 13 and the sealing ring 14 are made of silicone material, which is not only easy to manufacture, but also has a certain elasticity, which is beneficial for sealing water.

[0063] Example 5: This can be described based on Example 1, Example 2, or Example 3, such as... Figures 11 to 19As shown, the slots 11 are located on the outer side wall of the inner cover 1, and the slots 11 are evenly distributed on the outer side wall of the inner cover 1. The inclined track groove 12 is located above the slots 11 on the outer surface of the inner cover 1. This arrangement is reasonable and conducive to implementation. A retaining ring 31 is provided on the outer cover 2 at the position of the sliding member 3. This arrangement is more conducive to the installation of the sliding member 3. This arrangement is conducive to the self-locking device 4 forming an outer lock. Specifically, the self-locking device 4 includes a rotary switch 45 provided on the outer cover 2. The rotary switch 45 is provided with a hook 451. The hook 451 passes through the upper end face of the outer cover 2 and fixes the outer cover 2. This hook 451 helps to prevent the rotary switch 45 from disengaging when moving downward. The rotary switch 45 rotates with the rotation of the outer cover 2, and the hook 451 prevents it from disengaging from the outer cover 2. A self-locking pressure ring 46 is provided between the rotary switch 45 and the outer cover 2. Hooks 47 are evenly arranged on the outer side wall of the rotary switch 45. All the hooks 47 are evenly arranged with springs. The rings 48 are bound together. The outer surface of the rotary switch 45 is provided with recesses 49 for the back of the hooks 47 to be inserted into the loosened state. Protrusions are formed on the outer surface of the rotary switch 45 between adjacent recesses 49. In the normal state, the back of the hooks 47 is located in the recesses 49, and all the hooks 47 are in a radially contracted state. When the outer cover 2 is rotated, the rotary switch 45 will rotate with the outer cover 2. In this way, the back of the hooks 47 will slide from the position of the recess 49 to the position of the protrusion. Since all the hooks 47 are bound to the rotary switch 45 by the elastic rings 48, the hooks 47 will perform lever movement with the elastic rings 48 as the axis. The lower part of the hooks 47 will extend from the inner cover 1. This is conducive to the radial expansion of all the hooks 47 and the self-locking of the hooks 47. When the outer cover 2 is rotated in the opposite direction, the rotary switch 45 will rotate with the outer cover 2. At this time, the back of the hooks 47 will slide from the position of the protrusion to the position of the recess 49, and all the hooks 47 will return to the radially contracted state. In this embodiment, three hooks 47 are used. Correspondingly, the inner cover 1 is provided with inlet and outlet holes for the hooks 47 to enter and exit. This arrangement allows the hooks 47 to enter and exit simultaneously as a whole, thereby realizing the self-locking and unlocking of the outer card. Figures 11 to 19 As shown, to further illustrate, the hook 47 is H-shaped. This design not only facilitates the installation of the elastic ring 48 but also allows for the extension and retraction of the lower part of the hook 47. To further explain, as... Figures 11 to 19 As shown, the elastic ring 48 is a spring ring or spring coil, which is convenient for implementation. Finally, further explanation is given, as... Figures 11 to 19 As shown, a retaining ring 15 is provided on the lower end face of the inner cover 1, and a sealing ring 16 is fitted over the retaining ring 15. The retaining ring 15 and the sealing ring 16 are conducive to better sealing of the water cup mouth and achieve a better sealing effect. To further explain, both the retaining ring 15 and the sealing ring 16 are made of silicone material, which is not only easy to manufacture, but also has a certain elasticity, which is conducive to sealing water.

[0064] Example 6: This can be described based on Example 1, Example 2, Example 3, Example 4, or Example 5, such as... Figures 1 to 19 As shown, the inner cover 1 is provided with a rotating texture device 6 for the outer cover 2 to rotate in a tactile manner. When the outer cover 2 rotates, the rotating texture device 6 will produce a rotating sensation. Specifically, the rotating texture device 6 includes a limiting seat 61 provided on the inner cover 1. The lower end face of the limiting seat 61 is provided with hooks 62 to prevent the limiting seat 61 from detaching from the inner cover 1. The hooks 62 are evenly spaced on the lower end face of the limiting seat 61. The upper end face of the limiting seat 61 is provided with a mounting groove, in which a reset component 63 and a spring pin are installed. 64. The upper surface of the limiting seat 61 at the mounting slot position has a notch for the spring pin 64 to enter and exit, and the outer cover 2 has a corresponding mating hole 65 on the limiting seat 61. The upper part of the limiting seat 61 is located in the mating hole 65. The inner wall of the mating hole 65 has evenly spaced recesses 651, and the inner wall of the mating hole 65 between adjacent recesses 651 is protruding. In this way, when the outer cover 2 rotates, the spring pin 64 switches back and forth between the recesses 651 and the protrusions, thereby achieving a tactile feedback during rotation and allowing the user to know that rotation is occurring. Further explanation, such as Figures 11 to 19 As shown, the upper surface of the inner cover 1 is provided with a mounting hole for engaging with the hook 62. This mounting hole for engaging with the hook 62 helps to prevent the limiting seat 61 from disengaging from the inner cover 1. The reset member 63 is a spring, which allows the spring pin 64 to move back and forth in the mounting groove.

[0065] Example 7: This can be described based on Example 1, Example 2, Example 3, Example 4, Example 5, or Example 6, such as... Figures 24 to 31 As shown, this utility model also provides a water cup, including a cup body 10. The cup body 10 has locking protrusions 30 on its rim sidewall that engage with the locking groove 11 in the self-locking lid 20 as described above. These protrusions 30 prevent the inner lid 1 of the self-locking lid 20 from rotating, while allowing the outer lid 2 to rotate. The locking protrusions 30 are evenly spaced on the rim sidewall of the cup body 10. In this embodiment, four locking protrusions 30 are used, a reasonable and easy-to-implement arrangement. The locking protrusions 30 can be located on the inner or outer sidewall of the rim of the cup body 10, offering a variety of options. Furthermore, the rim sidewall of the cup body 10 has grooves that engage with the locking hooks 41 or 47 of the self-locking device 4 in the self-locking lid 20. This arrangement facilitates the locking of the locking hooks 41 or 47.

[0066] like Figures 24 to 31As shown, the self-locking device 4 in the self-locking cup lid 20 of this utility model is always in the initial state of radial expansion. Therefore, when the self-locking cup lid 20 is placed on the mouth of the cup body 10, the locking protrusion 30 will fall into the locking groove 11. At this time, the inner lid 1 cannot rotate at the mouth of the cup body 10. Then, the outer shell 5 is rotated (clockwise). The outer shell 5 will drive the outer lid 2 to rotate along the inclined track groove 12 on the inner lid 1. When the inner wall of the outer lid 2 pushes the self-locking device 4 from the initial state of release to move towards the side wall of the mouth of the cup body 10, it can lock the mouth of the cup body 10. The pressure plate 13 and sealing ring 14 or the retaining ring 15 and sealing ring 16 on the inner lid 1 will seal the mouth of the cup body 10. This design also provides a good seal. When the self-locking lid 20 needs to be removed, simply rotate the outer shell 5 in the opposite direction (counterclockwise). The outer shell 5 will then rotate the outer cover 2 along the inclined track groove 12 on the inner cover 1. The inner wall of the outer cover 2 will then push the self-locking device 4 from locking the side wall of the cup body 10 to the loosened initial state, ultimately allowing the self-locking lid 20 to be removed from the cup body 10. Since this method involves rotating back and forth along the inclined track groove 12, users do not need to rotate multiple times like with a threaded method to open and close the lid. This makes the operation extremely convenient and avoids leaks caused by misalignment, making it more convenient for users to carry and use.

[0067] All standard parts used in this application can be purchased from the market, and the specific connection methods of each part adopt conventional methods such as springs and sealing rings that are mature in the existing technology, and will not be described in detail here.

[0068] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A self-locking cup lid, comprising an inner lid (1) and an outer lid (2) disposed on the inner lid (1) and capable of rotating back and forth, characterized in that: The inner cover (1) has a slot (11) on its side wall and an inclined track groove (12) on its outer side wall. The outer cover (2) has a sliding member (3) for sliding in the corresponding inclined track groove (12). The inner cover (1) has a self-locking device (4) that can radially contract and radially expand. The self-locking device (4) is initially in a radially expanded state. When the outer cover (2) rotates, the self-locking device (4) changes from the initial radially expanded state to a radially contracted state. When the outer cover (2) rotates in the opposite direction, the radially contracted state of the self-locking device (4) changes to a radially expanded state.

2. The self-locking cup lid as described in claim 1, characterized in that: The inclined track groove (12) is located on the outer wall of the inner cover (1), and the inclined track groove (12) is evenly spaced on the outer wall of the inner cover (1). Correspondingly, the sliding member (3) is evenly spaced on the outer cover (2), and one of the sliding members (3) slides back and forth on the corresponding inclined track groove (12).

3. The self-locking cup lid as described in claim 2, characterized in that: The inclined track groove (12) includes a horizontal recess (121) and an inclined recess (122) disposed on the outer side wall of the inner cover (1). The horizontal recess (121) and the inclined recess (122) are interconnected. The sliding member (3) slides back and forth on the horizontal recess (121) and the inclined recess (122). The angle between the inclined recess (122) and the horizontal plane is 75°. Each of the inclined recesses (122) is provided with an elastic steel member (123).

4. The self-locking cup lid as described in claim 1, 2, or 3, characterized in that: The outer cover (2) is provided with an outer shell (5).

5. The self-locking cup lid as described in claim 1, 2, or 3, characterized in that: The slots (11) are located on the inner wall of the inner cover (1), and the slots (11) are evenly distributed on the inner wall of the inner cover (1). The self-locking device (4) includes hooks (41) evenly arranged on the inner cover (1). Each hook (41) can perform lever movement on the inner cover (1), and the evenly arranged hooks (41) form a circle on the inner cover (1). The upper part of the evenly arranged hooks (41) is connected by an elastic body ( 42) They are bundled together, and each of the hooks (41) has a hook protrusion (43) on its inner side, and the inner wall of the outer cover (2) has a groove (44). The number of grooves (44) is the same as the number of hooks (41). The inner wall of the outer cover (2) between adjacent grooves (44) is raised. The back of the hook (41) is located in the groove (44) so ​​that the hook (41) is in a loose state, and all the hooks (41) are in a radially expanded state.

6. The self-locking cup lid as described in claim 5, characterized in that: The inner cover (1) is provided with a pressure plate (13), and the pressure plate (13) is provided with a barb plate (131) for passing through the upper end face of the inner cover (1). The pressure plate (13) is provided with a sealing ring (14), and the sealing ring (14) is provided with a limiting post (141) that passes through the upper end face of the inner cover (1).

7. The self-locking cup lid as described in claim 1, 2, or 3, characterized in that: The slots (11) are located on the outer side wall of the inner cover (1), and the slots (11) are evenly distributed on the outer side wall of the inner cover (1). The inclined track groove (12) is located above the slots (11) on the outer surface of the inner cover (1). A retaining ring (31) is provided on the outer cover (2) at the position of the sliding member (3). The self-locking device (4) includes a rotary switch (45) provided on the outer cover (2). A hook (451) is provided on the rotary switch (45). The hook (451) extends from the outer cover. (2) The upper end face is fixed to the outer cover (2). A self-locking pressure ring (46) is provided between the rotary switch (45) and the outer cover (2). Hooks (47) are evenly arranged on the outer side wall of the rotary switch (45). All the hooks (47) are evenly arranged and bound together with an elastic ring (48). The outer surface of the rotary switch (45) is provided with a recess (49) for the back of the hook (47) to be placed in the loose state. A protrusion is formed on the outer surface of the rotary switch (45) between adjacent recesses (49).

8. The self-locking cup lid as described in claim 7, characterized in that: A retaining ring (15) is provided on the lower end face of the inner cover (1), and a sealing ring (16) is fitted over the retaining ring (15).

9. The self-locking cup lid as described in claim 1, 2, 3, 6, or 8, characterized in that: The inner cover (1) is provided with a rotational texture device (6) for the outer cover (2) to rotate in a textured manner.

10. A water cup, comprising a cup body (10), characterized in that: The cup body (10) has a locking protrusion (30) on the side wall of the cup mouth that cooperates with the locking groove (11) in the self-locking cup lid (20) as described in any one of claims 1 to 9.

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