Liquid dispensing device for preventing outer cover from rotating and loosening

Abstract

A liquid dispensing device for preventing an outer cover from swinging and loosening comprises a bottle body and an outer cover; an annular step is arranged on the bottle body, two protrusions are arranged at intervals on the upper surface of the annular step, the top surface of the protrusion is a plane, the plane is parallel to the upper surface of the annular step, and the plane and the upper surface of the annular step are transitioned through a curved surface; two thin sheets are arranged at intervals along the circumferential direction on the inner wall of the bottom of the outer cover, the gap between the two thin sheets forms two slots, and the first end and the second end of the thin sheet are respectively provided with a thick end and a thin end. The outer cover is rotated counterclockwise, and as the internal thread and the external thread are screwed in, when the thin sheet contacts the protrusion, the thin sheet changes to the outer shape and passes over the protrusion, and finally the protrusion enters the slot, and the protrusion blocks the thick end of the thin sheet from moving further, and a "click" sound is heard at the same time, indicating that the outer cover has been tightened to ensure that it is sealed, and the protrusion can also prevent the thin end of the thin sheet from moving in the opposite direction, so when the consumer carries it, the outer cover is not easy to swing and loosen automatically due to vibration.

Description

Technical Field

[0001] The utility model relates to daily necessities for human beings, in particular to a cosmetic container, and more particularly to a liquid dispensing device which can prevent an outer cover from rotating and loosening. Background Art

[0002] As people's living standards continue to improve, people pay more and more attention to their image, so makeup is becoming more and more popular and has become an indispensable part of life. People believe that putting on makeup and maintaining a good image is a kind of respect and courtesy to the people they are about to meet.

[0003] In the field of color cosmetics, especially color liquid cosmetics, some of the special functional liquid ingredients need to be placed in a sealed container. After use, consumers put it in their bags and carry it with them. This requires very high sealing requirements and prevents leakage during movement. In the prior art, after use, the product is screwed on the outer cover of the liquid cosmetic container. It is not easy to identify whether the outer cover is tightened, so it is difficult to ensure the seal, resulting in the inability to ensure the seal is leak-proof when carrying it with you; if it is not tightened, it is easy to cause the sealed liquid to leak and contaminate other carried items. Summary of the invention

[0004] The utility model aims to provide a liquid dispensing device for preventing an outer cover from being loosened by rotation, and the liquid dispensing device for preventing an outer cover from being loosened by rotation is intended to solve the technical problem in the prior art that it is difficult to identify whether the outer cover is tightened and the sealing of the container cannot be ensured.

[0005] The utility model discloses a liquid dispensing device for preventing an outer cover from rotating and loosening, comprising a bottle body and an outer cover;

[0006] The bottle body is provided with a threaded interface and an annular step, the annular step is located at the outer periphery of the threaded interface, an external thread is provided at the upper end of the threaded interface, two protrusions are provided at intervals on the upper surface of the annular step, the top surface of the protrusion is a plane, the plane is parallel to the upper surface of the annular step, and the plane and the upper surface of the annular step are transitioned through a curved surface;

[0007] The outer cover is provided with an internal thread matching the external thread, and two thin sheets are arranged at intervals along the circumferential direction on the inner wall of the bottom of the outer cover, and a space for elastic deformation of the thin sheets is arranged between the thin sheets and the inner wall of the outer cover, and the gap between the two thin sheets constitutes two slots, and the two protrusions are respectively arranged in the two slots, and the width of the slots is greater than or equal to the width of the protrusions. The first end and the second end of the thin sheet are respectively provided with a thick end and a thin end, and the radial thickness of the thick end is greater than the radial thickness of the thin end, the thick end is arranged adjacent to the plane of the protrusion, and the thin end is arranged adjacent to the curved surface of the protrusion.

[0008] Furthermore, the inner wall of the sheet is configured as an inclined surface.

[0009] Furthermore, a connecting rod is axially connected to the inner side of the outer cover, and a brush head is arranged at the end of the connecting rod.

[0010] Compared with the prior art, the utility model has a positive and obvious effect. The outer cover is rotated to the left, and as the inner thread and the outer thread are screwed in, when the thin sheet contacts the protrusion, the thin sheet changes to the outer shape and passes over the protrusion, and finally the protrusion enters the card slot, and the protrusion blocks the thick end of the thin sheet from moving further. At the same time, a "click" sound is heard, and the torque suddenly decreases, indicating that the outer cover has been tightened to ensure that it is sealed. The protrusion can also block the thin end of the thin sheet from moving in the opposite direction. Therefore, when the consumer carries it, the outer cover is not easy to automatically rotate loose and leak due to vibration, and the sealing function is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional schematic diagram of a liquid dispensing device for preventing an outer cover from rotating and loosening according to the utility model.

[0012] Figure 2 The utility model is a three-dimensional schematic diagram of an outer cover in a liquid dispensing device for preventing the outer cover from rotating and loosening.

[0013] Figure 3 The utility model is a schematic diagram of a bottle body in a liquid dispensing device for preventing an outer cover from rotating and loosening.

[0014] Figure 4 The utility model is a cross-sectional schematic diagram of an outer cover in a liquid dispensing device for preventing the outer cover from rotating and loosening.

[0015] Figure 5 for Figure 4 A partial enlarged schematic diagram of .

[0016] Figure 6 The utility model is a cross-sectional schematic diagram of a bottle body in a liquid dispensing device for preventing an outer cover from rotating and loosening.

[0017] Figure 7 The utility model is a cross-sectional schematic diagram of a liquid dispensing device for preventing an outer cover from rotating and loosening. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with an embodiment, but the present invention is not limited to the embodiment. Any similar structure and similar changes of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description and is not a limitation on the technical solution of the present invention.

[0019] like Figure 1-Figure 7 As shown, a liquid dispensing device for preventing an outer cover from rotating and loosening of the utility model comprises a bottle body 1 and an outer cover 2;

[0020] The bottle body 1 is provided with a threaded interface 17 and an annular step 3, the annular step 3 is located at the outer periphery of the threaded interface 17, an external thread 4 is provided at the upper end of the threaded interface 17, two protrusions 5 are provided at intervals on the upper surface of the annular step 3, the top surface of the protrusion 5 is a plane 6, the plane 6 is parallel to the upper surface of the annular step 3, and the plane 6 and the upper surface of the annular step 3 are transitioned through a curved surface 7;

[0021] The outer cover 2 is provided with an internal thread 8 that cooperates with the external thread 4. Two thin sheets 9 are arranged at intervals along the circumferential direction on the inner wall of the bottom of the outer cover 2. A space 10 for elastic deformation of the thin sheet 9 is arranged between the thin sheet 9 and the inner wall of the outer cover 2. The gap between the two thin sheets 9 constitutes two slots 11. The two protrusions 5 are respectively arranged in the two slots 11. The width of the slot 11 is greater than or equal to the width of the protrusion 5. The first end and the second end of the thin sheet 9 are respectively provided with a thick end 12 and a thin end 13. The radial thickness of the thick end 12 is greater than the radial thickness of the thin end 13. The thick end 12 is arranged adjacent to the plane 6 of the protrusion 5, and the thin end 13 is arranged adjacent to the curved surface 7 of the protrusion 5.

[0022] Furthermore, the inner wall of the sheet 9 is arranged as an inclined surface 14 , so that the inner wall of the sheet 9 opens outward at an angle, thereby ensuring that the sheet 9 elastically deforms and opens outward smoothly when in contact with the protrusion 5 .

[0023] Furthermore, a connecting rod 15 is axially connected inside the outer cover 2 , and a brush head 16 is provided at the end of the connecting rod 15 .

[0024] Specifically, the threaded interface 17, the external thread 4, the internal thread 8, the brush head 16, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be described in detail here.

[0025] The working principle of this embodiment:

[0026] After the outer cover 2 is assembled with the connecting rod 15 and the brush head 16, a space 10 is reserved for the sheet 9 to deform, so as to ensure that the sheet 9 can smoothly and elastically deform and pass over the protrusion 5 when in contact with the protrusion 5.

[0027] The tightening process of the outer cover 2 is as follows: the outer cover 2 is turned right (clockwise). As the internal thread 8 and the external thread 4 are screwed in, when the thin sheet 9 contacts the flat surface 6 or curved surface 7 of the protrusion 5, the thin sheet 9 changes shape and passes over the protrusion 5. Finally, the protrusion 5 enters the slot 11. The protrusion 5 blocks the thick end 12 of the thin sheet 9 from moving further. Figure 1 As shown, a "click" sound is heard at the same time, and the torque suddenly decreases, indicating that the outer cover 2 has been tightened to ensure sealing. The protrusion 5 can also prevent the thin end 13 of the sheet 9 from moving in the opposite direction (rotation requires a certain torque). Therefore, when the consumer carries it, the outer cover 2 is not easy to automatically rotate loose and leak due to vibration, thereby enhancing the sealing function.

[0028] The process of opening the outer cover 2 is as follows: the outer cover 2 is rotated counterclockwise, and as the thread is unscrewed, the thin sheet 9 first contacts the curved surface 7 of the protrusion 5 (with a smaller twisting force), and then contacts the flat surface 6, and then the thin sheet 9 is separated from the protrusion 5, and finally the outer cover 2 is opened.

Claims

1. A liquid dispensing device for preventing an outer cover from loosening due to rotation, comprising a bottle body and an outer cover; characterized in that: The bottle body is provided with a threaded interface and an annular step, the annular step is located at the outer periphery of the threaded interface, an external thread is provided at the upper end of the threaded interface, two protrusions are provided at intervals on the upper surface of the annular step, the top surface of the protrusion is a plane, the plane is parallel to the upper surface of the annular step, and the plane and the upper surface of the annular step are transitioned through a curved surface; The outer cover is provided with an internal thread matching the external thread, and two thin sheets are arranged at intervals along the circumferential direction on the inner wall of the bottom of the outer cover, and a space for elastic deformation of the thin sheets is arranged between the thin sheets and the inner wall of the outer cover, and the gap between the two thin sheets constitutes two slots, and the two protrusions are respectively arranged in the two slots, and the width of the slots is greater than or equal to the width of the protrusions. The first end and the second end of the thin sheet are respectively provided with a thick end and a thin end, and the radial thickness of the thick end is greater than the radial thickness of the thin end, the thick end is arranged adjacent to the plane of the protrusion, and the thin end is arranged adjacent to the curved surface of the protrusion.

2. A liquid dispensing device for preventing the outer cover from rotating and loosening according to claim 1, characterized in that: The inner wall of the sheet is configured as an inclined surface.

3. A liquid dispensing device for preventing the outer cover from rotating and loosening according to claim 1, characterized in that: A connecting rod is axially connected to the inner side of the outer cover, and a brush head is arranged at the end of the connecting rod.

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