A cup cover with a self-locking structure

Abstract

The utility model belongs to cup cover technical field, especially point a cup cover with self -locking structure, including handle shell, the switch seat of sliding in handle shell and the connecting sleeve of setting between switch seat and handle shell, open in switch seat there is chamber, the plug -in post is passed in chamber, the plug -in post lower end is connected with the sealing ring of abutting in switch seat lower end surface, the handle is equipped with the plug -in post upper end, the first annular protruding of sliding setting in chamber is profiled along the circumference of plug -in post outer wall, the spring of setting on the plug -in post is abutted to the first annular protruding lower end surface, the spring lower end and chamber bottom surface are abutted to each other;The second annular protruding of profiled along the circumference of plug -in post is equipped with the first annular protruding upper end, and the second annular protruding upper end and plug -in post are passed through the first slope and are transferred, and the steel ball of abutting has the second annular protruding both sides, and two steel balls are arranged in the steel ball anti -unhooking hole of setting in switch seat both sides respectively. The utility model discloses a purpose is provided with self -locking structure's cup cover with stable structure, easy to assemble, long service life.

Description

Technical Field

[0001] This utility model belongs to the field of cup lid technology, and specifically refers to a cup lid with a self-locking structure. Background Technology

[0002] Existing containers or bottles are generally sealed with threaded stoppers or solid rubber stoppers, which presents many inconveniences in daily use. Taking threaded stoppers as an example, they require cumbersome rotation to open and close, especially at lower temperatures and when the internal pressure is low, requiring more time and effort to open. A Chinese patent discloses a container stopper that opens and closes quickly (publication number CN104803085B). A search reveals this to be the closest example to existing technology. In summary, the problem with existing technology is that the self-locking structure uses a spring for locking, and with long-term use, the spring force is easily affected, causing the self-locking structure to fail to pop out, thus affecting the product's lifespan. Utility Model Content

[0003] The purpose of this invention is to provide a cup lid with a self-locking structure that is structurally stable, easy to assemble, and has a long service life.

[0004] The purpose of this utility model is achieved as follows: A cup lid with a self-locking structure includes a handle shell, a switch base slidably disposed within the handle shell, and a connecting sleeve disposed between the switch base and the handle shell. The switch base has a cavity, and a plug is inserted through the cavity. The lower end of the plug is connected to a sealing ring that abuts against the lower end face of the switch base. The upper end of the plug has a handle. The outer wall of the plug has a first annular protrusion slidably disposed within the cavity along its circumference. The lower end face of the first annular protrusion abuts against a spring sleeved on the plug, and the lower end of the spring abuts against the bottom surface of the cavity. The upper end of the first annular protrusion has a second annular protrusion slidably disposed along the circumference of the plug. The upper end of the second annular protrusion is connected to the plug by a first inclined surface. Steel balls abut against both sides of the second annular protrusion. The two steel balls are respectively disposed in steel ball anti-dislodgement holes opened on both sides of the switch base.

[0005] Preferably, the switch base has a limiting groove adapted to the handle.

[0006] Preferably, two limiting protrusions are formed on the first annular protrusion, and the limiting protrusions are adapted to the cross-shaped limiting groove opened at the upper end of the cavity.

[0007] Preferably, the lower end of the plunger has an annular groove, and a sealing ring is fitted onto the annular groove.

[0008] Preferably, the inner walls on both sides of the handle housing are formed with elastic plates, and the elastic plates are provided with first arc-shaped locking blocks, which are respectively adapted to the second arc-shaped locking blocks formed on the two sides of the switch base.

[0009] Preferably, the first inclined surface abuts against the second inclined surface formed inside the switch base.

[0010] Preferably, the outer wall of the switch base is formed with fixing plates on both sides, and the fixing plates abut against the bottom of the handle housing.

[0011] The outstanding and beneficial technical effects of this utility model compared to the prior art are as follows: When the cup lid with the self-locking structure is closed, the handle can be rotated 90 degrees, at which point the handle and the switch seat can lock together. Since the two steel balls are locked on the switch seat, the plug cannot be pushed down. When the cup lid needs to be opened, the user rotates the handle 90 degrees to reset it. Then the handle can be pushed down first, pushing the handle into the limiting groove. During the pushing process, since the second annular protrusion no longer abuts against the steel ball, the diameter of the plug becomes thinner, and the steel ball can move into the steel ball anti-disengagement hole, thereby separating the steel ball from the switch seat. During the pushing of the handle, the switch seat is also driven downward by the handle until the second arc-shaped locking blocks on both sides of the switch seat slide below the first arc-shaped locking block. Then the first arc-shaped locking block can block the second arc-shaped locking block from moving upward, preventing the switch seat from rebounding, realizing the straightening of the connecting sleeve by the switch seat, thereby realizing quick opening of the lid. The process is simple and convenient, and the setting structure of the steel ball and the steel ball anti-disengagement hole is stable and has a long service life. Attached Figure Description

[0012] Figure 1 This is a simplified structural diagram of the present invention; Figure 2 A simplified structural diagram of the present invention in its self-locking state; Figure 3 A cross-sectional view of this utility model; Figure 4 Exploded view of this utility model. Detailed Implementation

[0013] The present invention will be further described below with reference to specific embodiments.

[0014] like Figure 1-4As shown, a cup lid with a self-locking structure includes a handle housing 1, a switch base 2 slidably disposed within the handle housing 1, and a connecting sleeve 3 disposed between the switch base 2 and the handle housing 1. The switch base 2 has a chamber 4, and a plug 5 passes through the chamber 4. The lower end of the plug 5 is connected to a sealing ring 6 that abuts against the lower end face of the switch base 2. The upper end of the plug 5 has a handle 7. The outer wall of the plug 5 has a first annular protrusion 8 slidably disposed within the chamber 4. The lower end face of the first annular protrusion 8 abuts against a spring 9 sleeved on the plug 5. The lower end of the spring 9 abuts against the bottom surface of the chamber 4. The upper end of the first annular protrusion 8 has a second annular protrusion 10 slidably disposed within the circumference of the plug 5. The upper end of the second annular protrusion 10 is connected to the plug 5 by a first inclined surface 11. Steel balls 12 abut against both sides of the second annular protrusion 10. The two steel balls 12 are respectively disposed in steel ball anti-dislodgement holes 13 opened on both sides of the switch base 2.

[0015] When the handle 7 is pressed down, the diameter of the plunger 5 decreases, allowing the steel balls 12 on both sides to move towards the plunger 5. The steel balls 12 retract, causing the handle 7 to move the switch base 2 downward. The downward movement of the switch base 2 straightens the connecting sleeve 3, allowing the cup lid to be removed from the cup. When the switch base 2 moves upward, the elastic connecting sleeve 3 wrinkles due to the shortened distance between the switch base 2 and the handle housing 1, thus getting stuck on the cup wall and preventing the cup lid from being removed from the cup, achieving the effect of closing the lid.

[0016] Preferably, the switch base 2 has a limiting groove 14 that matches the handle 7. The limiting groove 14 ensures the displacement distance of the switch base 2 and prevents the connecting sleeve 3 from being torn apart, which would damage the cup lid.

[0017] Preferably, two limiting protrusions 15 are formed on the first annular protrusion 8, and the limiting protrusions 15 are adapted to the cross-shaped limiting groove 16 opened at the upper end of the chamber 4. The cross-shaped limiting groove 16 can drive the stopper 5 to rotate when the user turns the handle 7. At this time, because the protrusion on the side of the cross-shaped limiting groove 16 abuts against the first annular protrusion 8, a gap is formed between the sealing ring 6 and the bottom of the switch seat 2, so that the gas in the cup can be discharged along the chamber. Turning the handle 7 can both discharge gas and self-lock.

[0018] Preferably, the lower end of the plunger 5 has an annular groove 17, and a sealing ring 6 is fitted onto the annular groove 17. The mutual cooperation between the annular groove 17 and the sealing ring 6 facilitates the replacement of the sealing ring and increases its sealing performance, preventing water from flowing out of the cup.

[0019] Preferably, the inner walls of both sides of the handle housing 1 are formed with elastic plates 18, and the elastic plates 18 are provided with first arc-shaped locking blocks 19. The two first arc-shaped locking blocks 19 are respectively adapted to the second arc-shaped locking blocks 20 formed on the two side walls of the switch base 2. The setting of the first arc-shaped locking blocks 19 and the second arc-shaped locking blocks 20 can ensure that the locking force between the two locking blocks is greater than the force of the spring 9 when the switch base 2 slides to the bottom, which can prevent the plug 5 from popping up from the switch base 2, and ensure the stability and reliability of the structural connection.

[0020] Preferably, the first inclined surface 11 abuts against the second inclined surface 21 formed inside the switch base 2. Setting the first inclined surface 11 and the second inclined surface 21 to abut against each other can ensure that the plug 5 abuts against the switch base 2 and prevent the plug 5 from popping out. The switch base 2 is composed of two parts on the left and right sides, which facilitates the installation of the plug 5 and makes the structure more stable.

[0021] Preferably, the outer walls of the switch base 2 are formed with fixing plates 22, and the fixing plates 22 abut against the bottom of the handle housing 1.

[0022] Working principle: When the cup lid is closed, the handle 7 can be rotated 90 degrees, at which point the handle 7 can be locked with the switch base 2. Since the two steel balls 12 are locked on the switch base 2, the plunger 5 cannot be pushed down. When the cup lid needs to be opened, the user rotates the handle 7 90 degrees to reset it. Then the handle 7 can be pushed down first, pushing the handle 7 into the limiting groove 14. During the pushing process, since the second annular protrusion 10 no longer abuts against the steel balls 12, the diameter of the plunger 5 becomes thinner, and the steel ball 12 can move into the steel ball anti-dislodgement hole 13. The movement causes the steel ball 12 to disengage from the switch base 2. During the pushing of the handle 7, the switch base 2 is also driven downward by the handle 7 until the second arc-shaped locking blocks 20 on both sides of the switch base 2 slide below the first arc-shaped locking block 19. Then, the first arc-shaped locking block 10 can block the second arc-shaped locking block 20 from moving upward, preventing the switch base 2 from rebounding and straightening the switch base on the connecting sleeve 3. This achieves quick opening of the cover. The process is simple and convenient. Furthermore, the structure of the steel ball and the steel ball anti-disengagement hole 13 is stable and has a long service life.

[0023] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A cup lid with a self-locking structure, comprising a handle housing (1), a switch base (2) slidably disposed within the handle housing (1), and a connecting sleeve (3) disposed between the switch base (2) and the handle housing (1), characterized in that, The switch base (2) has a chamber (4) inside, and a plug (5) passes through the chamber (4). The lower end of the plug (5) is connected to a sealing ring (6) that abuts against the lower end face of the switch base (2). The upper end of the plug (5) is provided with a handle (7). The outer wall of the plug (5) is formed with a first annular protrusion (8) that slides in the chamber (4) along the circumference. The lower end face of the first annular protrusion (8) abuts against a spring (9) that is sleeved on the plug (5). The lower end of the spring (9) abuts against the bottom surface of the chamber (4). The upper end of the first annular protrusion (8) is provided with a second annular protrusion (10) that is formed along the circumference of the plug (5). The upper end of the second annular protrusion (10) and the plug (5) are connected by a first inclined surface (11). Steel balls (12) abut against both sides of the second annular protrusion (10). The two steel balls (12) are respectively provided in the steel ball anti-dislodgement holes (13) opened on both sides of the switch base (2).

2. The cup lid with a self-locking structure according to claim 1, characterized in that, The switch base (2) is provided with a limiting groove (14) that is adapted to the handle (7).

3. The cup lid with a self-locking structure according to claim 1, characterized in that, Two limiting protrusions (15) are formed on the first annular protrusion (8), and the limiting protrusions (15) are adapted to the cross-shaped limiting groove (16) opened at the upper end of the cavity (4).

4. The cup lid with a self-locking structure according to claim 1, characterized in that, The lower end of the plunger (5) is provided with an annular groove (17), and a sealing ring (6) is fitted on the annular groove (17).

5. The cup lid with a self-locking structure according to claim 1, characterized in that, The inner walls of both sides of the handle housing (1) are formed with elastic plates (18), and the elastic plates (18) are provided with first arc-shaped locking blocks (19). The two first arc-shaped locking blocks (19) are respectively adapted to the second arc-shaped locking blocks (20) formed on the two sides of the switch base (2).

6. The cup lid with a self-locking structure according to claim 1, characterized in that, The first inclined surface (11) abuts against the second inclined surface (21) formed inside the switch base (2).

7. The cup lid with a self-locking structure according to claim 1, characterized in that, The switch base (2) has fixing plates (22) formed on both sides of its outer wall, and the fixing plates (22) abut against the bottom of the handle housing (1).

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