An inverted device and pump head

Abstract

The utility model discloses an upside-down device and pump head, including pump core, sealing element, pump core includes air hole, baffle shoulder, air hole is located below baffle shoulder, sealing element is installed in pump core, and sealing element is silica gel soft material, and sealing element includes sleeve, and sleeve can be elastically deformed, and sleeve is located below baffle shoulder, and sleeve closes the outer end of air hole under normal circumstances, and pump core is installed in shoulder cover, and the inner wall of shoulder cover is equipped with first stop and second stop, and baffle shoulder stops first stop, and the diameter of ring plate is greater than the diameter of baffle shoulder, and ring plate stops second stop, the sealing element of soft silica gel in the utility model can close air hole under normal circumstances, when the bottle is used upside-down, the pressure difference appears when the pressure in bottle reduces, and external air can extrude sleeve and enter the bottle, can balance the pressure in bottle, and the liquid output is more smooth when using upside-down.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic packaging technology, and more specifically, to an inverting device and a pump head. Background Technology

[0002] In existing technology, lotion bottles have two states: upright use and inverted use. The pump core of the lotion bottle includes a vent for exchanging air with the inside of the bottle. This vent is usually located inside the bottle. When the lotion bottle is used inverted, the liquid inside the bottle will go in and out through the vent, and air cannot be exchanged. After repeated use, a negative pressure environment will form inside the bottle. The more the bottle is used in the inverted state, the more difficult it is to pump out the liquid. Therefore, a technical solution is needed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an inverting device and pump head so that liquid can be dispensed well even when the bottle is inverted.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses an inverted device, including a pump core and a sealing element. The pump core includes a vent hole and a shoulder. The vent hole is located below the shoulder. The sealing element is installed on the pump core and includes a sleeve. The sleeve is elastically deformable and is located below the shoulder. Under normal conditions, the sleeve closes the outer end of the vent hole.

[0006] Furthermore, the sealing element is made of silicone soft material.

[0007] Furthermore, the lower end of the sleeve is interference-fitted with the pump core.

[0008] Furthermore, the pump core includes a first outer wall and a second outer wall, the first outer wall is located above the second outer wall, the diameter of the first outer wall is larger than the diameter of the second outer wall, a step is formed between the first outer wall and the second outer wall, and the vent hole is located below the step.

[0009] Furthermore, the sleeve includes a first inner wall and a second inner wall, the first inner wall is attached to the first outer wall, the second inner wall is located below the first inner wall, the inner diameter of the second inner wall gradually decreases from top to bottom, a gap is formed between the second outer wall, the second inner wall and the step, and the vent hole communicates with the gap.

[0010] Furthermore, the sleeve has a second inner wall thickness that gradually decreases from top to bottom.

[0011] Furthermore, the lower end of the second inner wall is interference-fitted with the pump core, and the vent hole is located above the interference fit.

[0012] Furthermore, the sealing element includes an annular plate, which is integrally formed with the sleeve. The sleeve is located at the lower end of the annular plate, and the upper end face of the annular plate abuts against the shoulder.

[0013] This utility model also discloses a pump head, including the aforementioned inverted device and a shoulder sleeve, wherein the pump core is installed on the shoulder sleeve, and the inner wall of the shoulder sleeve is provided with a first stop and a second stop, the stop abutting against the first stop, and the diameter of the ring plate is larger than the diameter of the stop, and the ring plate abutting against the second stop.

[0014] The beneficial effects of this utility model are:

[0015] The soft silicone seal of this invention can seal the vent hole under normal conditions. When the bottle is used upside down, the pressure inside the bottle decreases and a pressure difference occurs. External air can squeeze through the sleeve and enter the bottle, which can balance the pressure inside the bottle and make the liquid dispensing smoother when the bottle is used upside down. Attached Figure Description

[0016] Figure 1 This is a perspective view of Example 1.

[0017] Figure 2 This is a cross-sectional view of Embodiment 1.

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 This is a cross-sectional view of Embodiment 2.

[0020] Reference numerals: 1. Pump core; 11. Vent hole; 12. Shoulder; 13. First outer wall; 14. Second outer wall; 15. Step; 2. Seal; 21. Ring plate; 22. Sleeve; 221. First inner wall; 222. Second inner wall; 101. Gap; 3. Shoulder sleeve; 31. First retaining edge; 32. Second retaining edge. Detailed Implementation

[0021] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Example 1:

[0023] like Figures 1-3 As shown, this embodiment discloses an inverted device, including a pump core 1 and a seal 2. The pump core 1 includes a vent hole 11 and a shoulder 12. The vent hole 11 is located below the shoulder 12. The seal 2 is installed on the pump core 1 and includes an annular plate 21 and a sleeve 22. The seal 2 is fitted onto the outer wall of the pump core 1 from the lower end of the pump core 1. The annular plate 21 and the sleeve 22 are integrally formed. The sleeve 22 is located at the lower end of the annular plate 21. The upper end face of the annular plate 21 abuts against the shoulder 12. The contact between the annular plate 21 and the shoulder 12 forms a limit for the upward installation of the seal 2.

[0024] The sealing element 2 is made of soft silicone material, and the sleeve 22 can be elastically deformed. The sleeve 22 is located below the shoulder 12. Under normal conditions, the sleeve 22 closes the outer end of the vent hole 11. When the bottle is used upside down, the pressure inside the bottle will decrease as the liquid is continuously pressed out. When the pressure inside the bottle is too low, the pressure in the vent hole 11 part is greater than the elastic force of the sleeve 22, and air will squeeze open the sleeve 22 and enter the bottle, balancing the pressure inside the bottle and keeping the liquid flowing smoothly when pressed out.

[0025] like Figure 3 As shown, the pump core 1 includes a first outer wall 13 and a second outer wall 14. The first outer wall 13 and the second outer wall 14 are located below the shoulder 12, and the first outer wall 13 is located above the second outer wall 14. The diameter of the first outer wall 13 is larger than the diameter of the second outer wall 14. A step 15 is formed between the first outer wall 13 and the second outer wall 14. The vent hole 11 is located below the step 15. The sleeve 22 includes a first inner wall 221 and a second inner wall 222. The first inner wall 221 fits against the first outer wall 13, serving to fix the seal 2 and the pump core 1. The second inner wall 222 is located below the first inner wall 221. Below, the inner diameter of the second inner wall 222 gradually decreases from top to bottom. The second inner wall 222 will not completely fit the second outer wall 14. A gap 101 is formed between the second outer wall 14, the second inner wall 222, and the step 15. The gap 101 is annular. The vent hole 11 connects to the gap 101, ensuring that the outer end of the vent hole 11 is not blocked by the seal 2. The existing gap 101 can ensure that there is a certain space inside the sleeve 22, providing space for the pressure difference between the inside and outside of the sleeve 22. When the pressure in the external space of the sleeve 22 decreases, the air in the gap 101 expands the sleeve 22 and enters the external space of the sleeve 22.

[0026] The wall thickness of the sleeve 22 gradually decreases from top to bottom, and the inner diameter of the second inner wall 222 gradually decreases from top to bottom, making the lower half of the sleeve 22 conical. The thickness of the part of the sleeve 22 with the second inner wall 222 gradually decreases downwards, making the lower end of the sleeve 22 more easily deformable. This makes it easier for gas to push open the lower end of the sleeve 22 when there is a pressure difference between the inside and outside of the sleeve 22. The diameter of the opening at the lower end of the sleeve 22 is smaller than the diameter of the outer wall of the pump core 1 in the sleeve. The lower end of the part of the sleeve 22 with the second inner wall 222 is interference-fitted with the pump core 1. The vent hole 11 is located above the interference fit to ensure the sealing of the sleeve 22 under normal conditions.

[0027] Example 2:

[0028] like Figure 4 As shown, this embodiment discloses a pump head, including the inverted device of Embodiment 1 and a shoulder sleeve 3. The pump core 1 is installed on the shoulder sleeve 3. The inner wall of the shoulder sleeve 3 is provided with a first stop 31 and a second stop 32. The shoulder 12 abuts against the first stop 31. The diameter of the ring plate 21 is larger than the diameter of the shoulder 12. The ring plate 21 abuts against the second stop 32. The ring plate 21 serves as a sealing gasket between the shoulder sleeve 3 and the bottle mouth. The bottle and the shoulder sleeve 3 are connected by threads. The bottle presses the ring plate 21 against the shoulder 12, sealing the gap between the shoulder 12 and the shoulder sleeve 3, and installing and fixing the pump core 1.

[0029] The above description is merely a preferred embodiment of this utility model. The up, down, left, and right directions mentioned above are only directions shown in the accompanying drawings. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An inverting device, characterized in that, The device includes a pump core (1) and a seal (2). The pump core (1) includes a vent (11) and a shoulder (12). The vent (11) is located below the shoulder (12). The seal (2) is installed on the pump core (1). The seal (2) includes a sleeve (22). The sleeve (22) is elastically deformable and is located below the shoulder (12). Under normal conditions, the sleeve (22) blocks the vent (11) from communicating with the outside.

2. The inverting device according to claim 1, characterized in that, The sealing element (2) is a silicone soft material.

3. The inverting device according to claim 1, characterized in that, The lower end of the sleeve (22) is interference-fitted with the pump core (1).

4. The inverting device according to claim 1, characterized in that, The pump core (1) includes a first outer wall (13) and a second outer wall (14). The first outer wall (13) is located above the second outer wall (14). The diameter of the first outer wall (13) is larger than the diameter of the second outer wall (14). A step (15) is formed between the first outer wall (13) and the second outer wall (14). The vent (11) is located below the step (15).

5. The inverting device according to claim 4, characterized in that, The sleeve (22) includes a first inner wall (221) and a second inner wall (222). The first inner wall (221) is attached to the first outer wall (13). The second inner wall (222) is located below the first inner wall (221). The inner diameter of the second inner wall (222) gradually decreases from top to bottom. A gap (101) is formed between the second outer wall (14), the second inner wall (222), and the step (15). The vent (11) communicates with the gap (101).

6. The inverting device according to claim 5, characterized in that, The sleeve (22) has a second inner wall (222) whose wall thickness gradually decreases from top to bottom.

7. The inverting device according to claim 5, characterized in that, The lower end of the second inner wall (222) is interference-fitted with the pump core (1), and the vent (11) is located above the interference fit.

8. An inverting device according to any one of claims 1-7, characterized in that, The sealing element (2) includes an annular plate (21), which is integrally formed with the sleeve (22). The sleeve (22) is located at the lower end of the annular plate (21), and the upper end face of the annular plate (21) abuts against the shoulder (12).

9. A pump head, characterized in that, The device includes the inverted device as described in claim 8 and a shoulder sleeve (3). The pump core (1) is installed on the shoulder sleeve (3). The inner wall of the shoulder sleeve (3) is provided with a first stop (31) and a second stop (32). The shoulder (12) abuts against the first stop (31). The diameter of the ring plate (21) is larger than the diameter of the shoulder (12). The ring plate (21) abuts against the second stop (32).

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