Novel leakage-proof ball cover

Abstract

The utility model discloses a novel leakproof ball cap which comprises an outer cap, a ball, a rotary cap and an inner cap, the upper end of the rotary cap is provided with a ball groove used for rolling of the ball, the top of the inner cap is provided with a first annular groove, and the bottom end face of the first annular groove is provided with a circular truncated cone extending upwards. The outer wall of the circular truncated cone and the inner wall of the first annular groove form a second annular groove, the lower portion of the ball groove is connected with a through groove allowing the circular truncated cone to be inserted therein, and a liquid outlet hole is formed in the area, located between the outer wall of the circular truncated cone and the inner wall of the first annular groove, of the bottom end face. The outer cover extrudes the ball to block the opening in one end of the through groove, meanwhile, the circular truncated cone is inserted from the opening in the other end of the through groove, the circular truncated cone is in interference fit with the through groove, and therefore the double-layer leakage-proof effect is achieved, and the leakage-proof performance of the ball cover is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bottle caps, in particular to a novel leak-proof ball bearing cap. Background Art

[0002] The ball bearing cap is a bottle sealing device for beauty and skin care products, and also has the function of liquid massage. When the ball bearing cap in the prior art is in a closed state, the outer cover is mainly used to squeeze the ball bearing to block the liquid outlet, thereby preventing the liquid from flowing out. The structure of the ball bearing cap has poor sealing and leak-proof function. When the bottle is tilted, the liquid easily seeps out from the edge gap between the ball bearing and the rolling groove. Therefore, the leak-proof performance of the ball bearing cap needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to provide a novel leak-proof ball bearing cover to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel leak-proof ball cover, comprising an outer cover, a ball, a rotating cover and an inner cover, the upper end of the rotating cover is provided with a ball groove for rolling the ball, the rotating cover can be rotatably sheathed on the outside of the inner cover, the central axis of the rotating cover coincides with the central axis of the inner cover, the top of the inner cover is provided with a first annular groove, the bottom end face of the first annular groove is provided with a truncated cone extending upward, the outer wall of the truncated cone and the inner wall of the first annular groove constitute a second annular groove, a through groove for inserting the truncated cone is connected below the ball groove, the truncated cone and the through groove are interference fit, an annular baffle extending downward into the second annular groove is provided below the through groove, the diameter of the annular baffle is larger than the diameter of the through groove, the outer wall of the annular baffle is in interference contact with the inner wall of the first annular groove, and the bottom end face is located between the outer wall of the truncated cone and the inner wall of the first annular groove. A liquid outlet is provided in the area.

[0005] Preferably, the frustum is made of elastic material, the diameter of the frustum increases toward the direction in which its axis points to the bottom end surface, and the minimum diameter of the frustum is equal to the diameter of the through groove.

[0006] Preferably, the inner wall of the rotating cover is provided with a boss, and the outer wall of the inner cover is provided with a slide groove matched with the boss, and the slide groove is inclined upward around the inner cover.

[0007] Preferably, the outer wall of the inner cover is provided with a boss, and the inner wall of the rotating cover is provided with a slide groove matched with the boss, and the slide groove is inclined upward around the rotating cover.

[0008] Preferably, a third annular groove is provided on the inner wall of the lower end of the rotating cover, and a first annular boss for embedding into the third annular groove is provided on the outer wall of the lower end of the inner cover.

[0009] Preferably, the inner cap is provided with an internal thread for cooperating with the bottle mouth.

[0010] Preferably, a fourth annular groove is provided on the inner wall of the lower end of the outer cover, and a second annular boss for embedding into the fourth annular groove is provided on the outer wall of the upper end of the rotating cover.

[0011] Preferably, the number of the liquid outlet holes is several and the circumferences are evenly distributed in the area of ​​the bottom end surface between the outer wall of the truncated cone and the inner wall of the first annular groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an exploded view of the overall structure of the ball bearing cover of the utility model;

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the inner cover of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the inner cover of the utility model from a front view angle;

[0015] Figure 4 It is a three-dimensional structural schematic diagram of the rotary cover of the utility model;

[0016] Figure 5 It is a schematic cross-sectional structure diagram of the ball bearing cover of the utility model in a closed state;

[0017] Figure 6 It is a schematic cross-sectional structure diagram of the ball bearing cover of the utility model in an open state.

[0018] In the figure: 1-outer cover; 2-ball; 3-rotating cover; 4-inner cover; 101-fourth annular groove; 301-annular baffle; 302-third annular groove; 303-boss; 304 ball groove; 305-through groove; 306-second annular boss; 401-round table; 402-liquid outlet; 403-slide; 404-first annular boss; 405-first annular groove; 406-bottom end face; 407-second annular groove; 408-internal thread. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1-6 As shown, a novel leak-proof ball cover comprises an outer cover 1, a ball 2, a rotating cover 3 and an inner cover 4, wherein a ball groove 304 for rolling the ball 2 is provided at the upper end of the rotating cover 3, the rotating cover 3 is rotatably sleeved on the outside of the inner cover 4, the central axis of the rotating cover 3 coincides with the central axis of the inner cover 4, a first annular groove 405 is provided on the top of the inner cover 4, a frustum 401 extending upward is provided on the bottom end surface 406 of the first annular groove 405, the outer wall of the frustum 401 and the inner wall of the first annular groove 405 constitute a second annular groove 407, a through groove 305 for inserting the frustum 401 is connected below the ball groove 304, the frustum 401 and the through groove 305 are interference fit, an annular baffle 301 extending downward into the second annular groove 406 is provided below the through groove 305, the diameter of the annular baffle 301 is larger than the diameter of the through groove 305. The outer wall of the annular baffle 301 is in interference contact with the inner wall of the first annular groove 405, which prevents liquid from flowing out from the gap between the outer wall of the annular baffle 301 and the inner wall of the first annular groove 405. The bottom end surface 406 is located between the outer wall of the truncated cone 401 and the inner wall of the first annular groove 405, and a liquid outlet 402 is provided.

[0021] Furthermore, in the design of the interference fit between the truncated cone 401 and the through groove 305, the shape of the truncated cone 401 can be set to an elastic material that is thick at the bottom and thin at the top, and the diameter of the truncated cone 401 increases toward the direction in which its axis points to the bottom end face 406, and the minimum diameter of the truncated cone 401 is equal to the diameter of the through groove 305, so that it is easier to insert the truncated cone 401 into the through groove 305 at the front end, and the insertion process is smooth and stable. During the descent of the rotating cover 4, as the part of the truncated cone 401 inserted into the through groove 305 increases, the extrusion pressure of the truncated cone 401 on the inner wall of the through groove 305 also increases accordingly, thereby achieving a better sealing effect.

[0022] Further, the inner wall of the rotating cover 3 is provided with a boss 303, and the outer wall of the inner cover 4 is provided with a slide 403 that matches the boss 303, and the slide 403 is tilted upward around the inner cover. This setting is used to rotate the rotating cover 3 clockwise or counterclockwise to make the rotating cover 3 rotate upward or rotate downward relative to the inner cover 4, thereby realizing the opening and closing of the ball cover. Or the outer wall of the inner cover 4 is provided with a boss, and the inner wall of the rotating cover 3 is provided with a slide that matches the boss, and the slide is tilted upward around the rotating cover. The principle is also to use the principle of the boss and the slide to slide together. The structural diagram of this solution is omitted in this utility.

[0023] Furthermore, a third annular groove 302 is provided on the inner wall of the lower end of the rotating cover 4, and a first annular boss 404 for embedding into the third annular groove 302 is provided on the outer wall of the lower end of the inner cover 4. When the rotating cover 4 is rotated down to a closed state, the first annular boss 404 is embedded in the third annular groove 302, thereby limiting and fixing the rotating cover 4.

[0024] Furthermore, the inner cover 4 is provided with an internal thread 408 for cooperating with the bottle mouth. The internal thread 408 is used for the inner cover 4 to cooperate with the bottle mouth thread. In practical applications, the size of the internal thread 408 can be set according to the parameters of the matching bottle mouth thread.

[0025] Furthermore, a fourth annular groove 101 is provided on the inner wall of the lower end of the outer cover 1, and a second annular boss 306 for embedding into the fourth annular groove 101 is provided on the outer wall of the upper end of the rotating cover 3, which is used to stably cover the outer cover 1 on the rotating cover 3.

[0026] Furthermore, the number and aperture of the liquid outlet holes 402 can be set according to the demand for liquid outlet flow rate in actual applications. In this embodiment, the number of liquid outlet holes 402 is set to be several, and the circumference is evenly distributed in the area where the bottom end surface is located between the outer wall of the cone 401 and the inner wall of the first annular groove 405.

[0027] Working principle:

[0028] like Figure 5As shown, when the ball cover is in a closed state, the outer cover 1 squeezes the ball 2 to block the opening at one end of the through groove, preventing the liquid from flowing out from the gap between the ball groove and the ball; the truncated cone 401 is inserted from the opening at the other end of the through groove 305. Since the truncated cone 401 and the through groove 305 are in interference fit, the truncated cone 401 acts as a stopper. Although the liquid in the bottle can enter the first annular groove 405 from the liquid outlet 402, the liquid cannot pass through the through groove 305, thereby playing a double-layer leak-proof role. At the same time, the outer wall of the annular baffle 301 is in interference contact with the inner wall of the first annular groove 405, preventing the liquid from flowing out between the outer wall of the annular baffle 301 and the inner wall of the first annular groove 405.

[0029] like Figure 6 As shown, when the ball bearing cover needs to be opened, the outer cover 1 is opened to release the squeezing of the ball bearing 2, so that the ball bearing 2 opens the opening at one end of the through groove; the rotating cover 3 is rotated to make it rise, and at this time, the truncated table 401 is withdrawn from the opening at the other end of the through groove 305, and the liquid in the bottle can enter the first annular groove 405 from the liquid outlet 402, and flow to the ball bearing 2 through the through groove 305, so as to realize the opening of the ball bearing cover. It should be noted that at this time, the outer wall of the annular baffle 301 and the inner wall of the first annular groove 405 are still in a state of interference contact, that is, when opened for use, the liquid can still be prevented from flowing out through the gap between the outer wall of the annular baffle 301 and the inner wall of the first annular groove 405.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A novel leak-proof ball bearing cover, comprising an outer cover, a ball bearing, a rotating cover and an inner cover, wherein the upper end of the rotating cover is provided with a ball bearing groove, the rotating cover can be rotatably mounted on the inner cover, the central axis of the rotating cover coincides with the central axis of the inner cover, and the characteristics are as follows: A first annular groove is provided on the top of the inner cover, and an upwardly extending frustum is provided on the bottom end surface of the first annular groove, the outer wall of the frustum and the inner wall of the first annular groove constitute a second annular groove, a through groove for inserting the frustum is connected below the ball groove, the frustum and the through groove are interference fit, an annular baffle extending downward into the second annular groove is provided below the through groove, the diameter of the annular baffle is larger than the diameter of the through groove, the outer wall of the annular baffle is in interference contact with the inner wall of the first annular groove, and a liquid outlet is provided in the area of ​​the bottom end surface located between the outer wall of the frustum and the inner wall of the first annular groove.

2. A novel leak-proof ball bearing cover according to claim 1, characterized in that: The truncated cone is made of elastic material, the diameter of the truncated cone increases gradually in the direction where its axis points to the bottom end surface, and the minimum diameter of the truncated cone is equal to the diameter of the through groove.

3. The novel leak-proof ball bearing cover according to claim 1 is characterized in that: The inner wall of the rotating cover is provided with a boss, and the outer wall of the inner cover is provided with a slide groove matched with the boss, and the slide groove is inclined upward around the inner cover.

4. The novel leak-proof ball bearing cover according to claim 1 is characterized in that: The outer wall of the inner cover is provided with a boss, and the inner wall of the rotating cover is provided with a slide groove matched with the boss, and the slide groove is inclined upward around the rotating cover.

5. The novel leak-proof ball bearing cover according to claim 1 is characterized in that: The inner wall of the lower end of the rotating cover is provided with a third annular groove, and the outer wall of the lower end of the inner cover is provided with a first annular boss for embedding into the third annular groove.

6. The novel leak-proof ball bearing cover according to claim 1 is characterized in that: The inner cap is provided with an internal thread for matching with the bottle mouth.

7. The novel leak-proof ball bearing cover according to claim 1 is characterized in that: A fourth annular groove is arranged on the inner wall of the lower end of the outer cover, and a second annular boss for embedding into the fourth annular groove is arranged on the outer wall of the upper end of the rotating cover.

8. A novel leak-proof ball bearing cover according to any one of claims 1 to 7, characterized in that: The number of the liquid outlet holes is several, and the circumference is evenly distributed in the area of ​​the bottom end surface between the outer wall of the truncated cone and the inner wall of the first annular groove.

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