Automatic suction dropper

Abstract

The utility model discloses an automatic material suction dropper which comprises a connecting cover (1) connected with a bottle body, a material suction pipe (2) extending into the bottle body is arranged at the lower end of the connecting cover (1), and a deformation cavity (3) is formed in the middle of the material suction pipe (2). A rotatable protective cover (4) is arranged on the outer side of the connecting cover (1), and the upper end of the material suction pipe (2) penetrates through the protective cover (4); the outer side of the connecting cover (1) is provided with a limiting structure for limiting the rotating stroke of the protective cover (4), the inner side of the protective cover (4) is provided with a limiting cover (20), and the limiting cover (20) is arranged on the deformation cavity (3) in a sleeving mode. The extrusion friction time of the deformation cavity is shortened through a staggered extrusion type structure, the cover body is convenient and labor-saving to screw, the stable material suction capacity is ensured, and the service life of the deformation cavity is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic bottle components, specifically to an automatic feeding dropper. Background Technology

[0002] Droppers are common products in the cosmetics industry. Currently, using dropper bottles requires removing the dropper tip and straw from the bottle body, then manually squeezing the tip to draw the reagent from the bottle into the dropper, which is cumbersome. To address this, an automatic dropper has been developed, such as the Chinese utility model patent with publication number CN220715908U, which discloses a dropper comprising a bottle body and an outer cap. The outer cap is positioned above the bottle body, and the top of the bottle body has a bottle opening for attaching the outer cap. Inside the outer cap is a dropper extending upwards. The dropper includes a vertically connected upper and lower cavity, with the lower cavity extending into the outer cap. Both the lower and upper cavities are made of deformable rubber. The bottom of the dropper is connected to a straw that vertically penetrates the bottle opening and presses against the bottom of the bottle body to compress and deform the lower cavity. This type of dropper features a deformable suction head inside the outer cap. When the cap is unscrewed, the lower chamber returns to its original position due to its own elasticity. This allows the reagent to be automatically drawn into the suction head during the process of separating the cap from the bottle opening, completing the automatic suction action. The suction structure is located inside the cap, preventing it from being exposed to air. However, this type of dropper also has some drawbacks. During the process of screwing on and off the cap, the cap moves up or down gradually along the internal threads, causing the cap to rotate while simultaneously squeezing the deformation chamber of the suction head. This results in significant resistance when tightening the cap and prolonged squeezing friction on the suction head's deformation chamber. After a period of use, the elasticity of the suction head's deformation chamber decreases, leading to a reduction in the suction head's self-suction capability and a shorter lifespan. Utility Model Content

[0003] The purpose of this invention is to provide an automatic feeding dropper. This invention reduces the compression friction time of the deformation cavity through a staggered extrusion structure, makes tightening the cap convenient and effortless, ensures stable feeding capacity, and improves the service life of the deformation cavity.

[0004] The technical solution of this utility model is as follows: An automatic suction dropper includes a connecting cap connected to a bottle body, a suction tube extending into the bottle body at the lower end of the connecting cap, and a deformation cavity in the middle of the suction tube; a rotatable protective cap is provided on the outer side of the connecting cap, and the upper end of the suction tube passes through the protective cap; a limiting structure is provided on the outer side of the connecting cap to limit the rotation stroke of the protective cap, and a limiting cap is provided on the inner side of the protective cap, the limiting cap being sleeved on the deformation cavity.

[0005] In the aforementioned automatic suction dropper, the limiting cover has a limiting groove that fits into the deformation cavity.

[0006] In the aforementioned automatic suction dropper, the limiting structure includes a set of limiting blocks symmetrically arranged on the outer side of the connecting cover and a set of limiting strips symmetrically arranged on the inner side of the protective cover, wherein the limiting strips and limiting blocks are staggered at 90 degrees.

[0007] In the aforementioned automatic feeding dropper, the feeding tube includes a first tube body that passes through a protective cap and a second tube body that extends into the bottle body. The deformation cavity is disposed in the first tube body and is connected to the second tube body. The second tube body has a fixing sleeve on its outer side, and the upper end of the fixing sleeve is in contact with the bottom of the first tube body.

[0008] In the aforementioned automatic suction dropper, the lower outer side of the first tube body has a first convex ring and a second convex ring, and a fixing ring groove is formed between the first convex ring and the second convex ring; the upper end of the connecting cap has an inner protrusion that fits into the fixing ring groove.

[0009] In the aforementioned automatic suction dropper, the first tube body has an inner annular groove inside; the end of the second tube body has an annular edge that fits into the inner annular groove.

[0010] In the aforementioned automatic suction dropper, the outer side of the limiting cover is provided with a limiting vertical groove, and the inner side of the protective cover has a limiting vertical strip that matches the limiting vertical groove.

[0011] In the aforementioned automatic suction dropper, the upper end of the first tube has a gripping head for easy handling.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. In this utility model, the connecting cap is connected to the bottle body, the middle part of the suction tube has a deformation cavity, and a protective cap is rotatably fitted on the connecting cap. The inner side of the protective cap has a limiting cap. When suctioning, rotating the protective cap causes the limiting cap to misalign with the deformation cavity. The deformation cavity is deformed by the misalignment and compression. Due to the limiting structure between the connecting cap and the protective cap, the protective cap is restricted by the rotation of the connecting cap. Then, if the protective cap is rotated again, the protective cap will drive the connecting cap to rotate. The connecting cap is tightened on the bottle body. When the protective cap is loosened, the protective cap returns to its original position. During this process, the deformation cavity recovers and generates negative pressure. The liquid enters the deformation cavity through the suction tube, thus achieving suction. The limiting cap in the protective cap compresses the deformation cavity, causing the deformation cavity to undergo torsional misalignment deformation, reducing the compression friction time of the deformation cavity. The cap is easy and labor-saving to tighten, ensuring stable suction capacity and improving the service life of the deformation cavity.

[0014] 2. The protective cover and the limiting cover are fitted together by a groove and a vertical strip structure, which allows the protective cover to rotate stably, so that the limiting groove can stably compress the deformation cavity.

[0015] 3. The lower outer side of the first tube body has a first convex ring and a second convex ring, and a fixing ring groove is formed between the first convex ring and the second convex ring; the upper end of the connecting cover has an inner protrusion that fits into the fixing ring groove. This structure enables the picking head and the connecting cover to be stably connected, ensuring stable material suction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the inner annular groove.

[0018] Figure 3 This is a schematic diagram of the deformation cavity;

[0019] Figure 4 This is a schematic diagram of the limiting vertical groove;

[0020] Figure 5 This is a schematic diagram of the limiting vertical bar;

[0021] Figure 6 This is a schematic diagram of a fixed annular groove;

[0022] Figure 7 This is a schematic diagram of the inner protrusion.

[0023] The markings in the attached diagram are as follows: 1. Connecting cover, 2. Suction tube, 3. Deformation cavity, 4. Protective cover, 6. Limiting groove, 7. Limiting block, 8. Limiting strip, 9. First tube body, 10. Second tube body, 11. Fixing sleeve, 12. First convex ring, 13. Second convex ring, 14. Fixing ring groove, 16. Inner protrusion, 17. Inner ring groove, 18. Circular ring edge, 20. Limiting cover, 21. Limiting vertical groove, 22. Limiting vertical strip, 23. Picking head. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0025] Example: An automatic dispensing dropper, including a connecting cap 1 connected to the bottle body, as shown in the attached figure. Figure 1As shown, the lower end of the connecting cap 1 is provided with a suction tube 2 that extends into the bottle body, and the middle part of the suction tube 2 has a deformation cavity 3; the outer side of the connecting cap 1 has a rotatable protective cap 4, and the upper end of the suction tube 2 passes through the protective cap 4; the outer side of the connecting cap 1 has a limiting structure that limits the rotation stroke of the protective cap 4, the limiting structure including a set of symmetrically arranged limiting blocks 7 on the outer side of the connecting cap 1 and a set of symmetrically arranged limiting strips 8 on the inner side of the protective cap 4, the limiting strips 8 and the limiting blocks 7 are staggered at 90 degrees, the protective cap is limited by the limiting blocks when rotating, the limiting blocks abut against the limiting strips, and the rotation stroke of the protective cap is limited. The process is a quarter turn. Compared with the prior art, where the cover and the deformation cavity are squeezed and rubbed together in turn during the spiral rotation and deformation cavity compression process, this utility model reduces the friction time between the limiting groove and the deformation cavity. The inner side of the protective cover 4 is provided with a limiting cover 20, which is sleeved on the deformation cavity 3. The limiting cover 20 has a limiting groove 6 that fits into the deformation cavity 3. When the protective cover is rotated, the limiting cover and the protective cover rotate simultaneously, and the limiting groove rotates with the protective cover. The limiting groove squeezes the deformation cavity, causing the deformation cavity to deform and reducing the internal space. The limiting groove and the deformation cavity have the same structure, which is an elliptical structure.

[0026] The suction tube 2 includes a first tube 9 passing through the protective cap 4 and a second tube 10 extending into the bottle body. A deformation cavity 3 is located inside the first tube 9 and communicates with the second tube 10. A fixing sleeve 11 is located on the outer side of the second tube 10, with its upper end contacting the bottom of the first tube 9. The fixing sleeve stabilizes the second tube, ensuring a more stable connection between the two tubes. The upper end of the first tube 9 has a gripping head 23 for easy handling; the gripping head allows for convenient holding of the suction tube, and the solution can be removed by squeezing the gripping head.

[0027] The lower outer side of the first tube body 9 has a first convex ring 12 and a second convex ring 13, and a fixing annular groove 14 is formed between the first convex ring 12 and the second convex ring 13, as shown in the attached figure. Figure 6 As shown; the upper end of the connecting cover 1 has an inner protrusion 16 that fits into the fixing annular groove 14, as shown in the attached figure. Figure 7 As shown, the entire suction tube is made of rubber and has a certain degree of toughness. The deformation cavity is easily deformed under the pressure of the protective cover, and the inner protrusion is inserted into the fixing ring groove, so that the picking head is stably connected to the connecting cover. The first tube body 9 has an inner ring groove 17 inside, as shown in the attached figure. Figure 1 As shown; the end of the second tube 10 has a circular edge 18 that fits into the inner annular groove 17, and the first tube and the second tube can be stably connected by the locking structure.

[0028] The limiting cover 20 has a limiting vertical groove 21 on its outer side, as shown in the attached figure. Figure 4As shown, the inner side of the protective cover 4 has a limiting vertical strip 22 that matches the limiting vertical groove 21, as shown in the attached figure. Figure 5 As shown, the protective cover and the limiting cover are fitted together by a groove and a vertical strip structure, and the protective cover can rotate stably, so that the limiting groove can stably compress the deformation cavity.

[0029] The working principle of this utility model is as follows: The connecting cap is connected to the bottle body, the middle part of the suction tube has a deformation cavity, and a protective cap is rotatably fitted on the connecting cap. A limiting cap is set inside the protective cap, and the inner side of the limiting cap has a limiting groove. When suctioning, rotating the protective cap causes the limiting groove to misalign with the deformation cavity, and the deformation cavity is deformed by the misalignment and compression. The limiting strip and the limiting block are staggered at 90 degrees. The protective cap is restricted by the rotation of the connecting cap. Then, if the protective cap is rotated again, it will drive the connecting cap to rotate, and the connecting cap will be tightened on the bottle body. When the protective cap is loosened, it will reset. During this process, the deformation cavity recovers and generates negative pressure. The liquid enters the deformation cavity through the suction tube, realizing suction. The limiting groove in the limiting cap compresses the deformation cavity, causing the deformation cavity to undergo torsional misalignment deformation, reducing the compression friction time of the deformation cavity. The cap is easy and labor-saving to tighten, ensuring stable suction capacity and improving the service life of the deformation cavity.

Claims

1. An automatic suction pipette, characterized by: The utility model relates to a bottle connecting cover, which comprises a connecting cover (1) connected with a bottle body, a suction pipe (2) extending into the bottle body is arranged at the lower end of the connecting cover (1), and a deformation cavity (3) is arranged at the middle part of the suction pipe (2); a rotatable protective cover (4) is arranged on the outer side of the connecting cover (1), and the upper end of the suction pipe (2) passes through the protective cover (4); the outer side of the connecting cover (1) is provided with a limiting structure for limiting the rotation stroke of the protective cover (4), and a limiting cover (20) is arranged on the inner side of the protective cover (4) and is sleeved on the deformation cavity (3).

2. The automatic suction pipette according to claim 1, characterized in that: The limiting cover (20) is provided with a limiting groove (6) matched with the deformation cavity (3) in the limiting cover (20).

3. The automatic suction pipette according to claim 1, characterized in that: The limiting structure comprises a set of limiting blocks (7) symmetrically arranged on the outer side of the connecting cover (1) and a set of limiting strips (8) symmetrically arranged on the inner side of the protective cover (4), and the limiting strips (8) and the limiting blocks (7) are arranged at an angle of 90 degrees.

4. The automatic suction pipette according to claim 1, characterized in that: The suction pipe (2) comprises a first pipe body (9) passing through the protective cover (4) and a second pipe body (10) extending into the bottle body, the deformation cavity (3) is arranged in the first pipe body (9), and the deformation cavity (3) is communicated with the second pipe body (10); the outer side of the second pipe body (10) is provided with a fixed sleeve (11), and the upper end of the fixed sleeve (11) is in contact with the bottom of the first pipe body (9).

5. The automatic pick-up dropper of claim 4, wherein: The outer side of the lower end of the first pipe body (9) is provided with a first convex ring (12) and a second convex ring (13), and a fixed ring groove (14) is formed between the first convex ring (12) and the second convex ring (13); the upper end of the connecting cover (1) is provided with an inner convex (16) matched with the fixed ring groove (14).

6. The automatic suction pipette according to claim 4, characterized in that: The first pipe body (9) is internally provided with an inner ring groove (17), and the end of the second pipe body (10) is provided with a circular ring edge (18) matched with the inner ring groove (17).

7. The automatic suction pipette according to claim 1, characterized in that: The outer side of the limiting cover (20) is provided with a limiting vertical groove (21), and the inner side of the protective cover (4) is provided with a limiting vertical strip (22) matched with the limiting vertical groove (21).

8. The automatic suction pipette according to claim 4, characterized in that: The upper end of the first pipe body (9) is provided with a holding head (23) for convenient holding.

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