Waterproof structure of pressing head

Abstract

The utility model provides a waterproof structure of a pressing head, which comprises a cover body, the top of the cover body is provided with a first boss extending upwards, the top of the first boss is connected with a second boss, and the outer diameter of the second boss is smaller than that of the first boss; a skirt edge is arranged on the lower portion of the pump head, a plurality of spaced limiting ribs are arranged on the inner wall of the skirt edge, a limiting ring is defined by the spaced limiting ribs along the inner wall of the skirt edge, the first boss is contained in the limiting ring, and the fit clearance between the limiting ribs and the outer wall of the first boss is smaller than that between the limiting ribs and the outer wall of the second boss. In the pressing and rebounding process, the limiting rib can provide a good limiting effect, the pump head cannot shake left and right, water attached between the limiting rib and the first boss can be driven to the second boss at the moment, the weight of the attached water is increased by means of the outer diameter difference between the second boss and the first boss, and the weight of the attached water is reduced by means of the outer diameter difference. Therefore, water can flow out more easily, and the possibility that water is sucked into the bottle is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of pump bodies, and in particular relates to a pump head waterproof structure. Background Art

[0002] In modern life, personal care products such as shower gel and shampoo have become daily necessities. These products are typically packaged in plastic pump bottles, which squeeze the liquid product out by pressing the pump head for convenient use. However, in the humid environment of the bathroom, especially when using a showerhead, water may flow through the pump head into the bottle, causing product deterioration or damage to the pump head, affecting the user experience.

[0003] Although pump-top bottles currently on the market have adopted some waterproofing measures, such as installing a sealing ring between the pump head and the bottle cap, water seepage is still inevitable under long-term use or under the impact of severe water spray. On the one hand, the sealing ring has a limited contact area with the pump head and bottle cap, making it difficult to completely block water intrusion. On the other hand, the simple connection structure between the pump head and the bottle cap can easily cause relative displacement when pressing the pump head, further reducing the already insufficient sealing performance.

[0004] Therefore, how to improve the waterproof performance of the pump head while ensuring its normal use and prevent water from flowing into the bottle along the pump head has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a waterproof structure with a pump head, which is mainly used to solve the defects in the existing technology that when the shower head sprays water, the water flow may flow into the bottle along the pump head, causing product deterioration or damage to the pump head.

[0006] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0007] The utility model provides a head-pressed waterproof structure, comprising:

[0008] A cover body, wherein a first boss extending upward is provided on the top of the cover body, a second boss is connected to the top of the first boss, and the outer diameter of the second boss is smaller than that of the first boss;

[0009] The pump head comprises a skirt at the lower part of the pump head, a plurality of spaced-apart limiting ribs on the inner wall of the skirt, and the plurality of limiting ribs form a limiting circle along the inner wall of the skirt. The first boss is accommodated in the limiting circle, and the fitting clearance between the limiting rib and the outer wall of the first boss is smaller than the fitting clearance between the limiting rib and the outer wall of the second boss.

[0010] In some embodiments, the outer wall surface of the second boss is provided with screw threads, the first boss and the second boss are coaxially arranged, and a waterproof step is formed by the difference in outer diameters between the first boss and the second boss.

[0011] In some embodiments, an arc section is provided on the inner side of the bottom end of the limiting rib, and when the pump head is in an unpressed state, the arc section corresponds to the waterproof step.

[0012] In some embodiments, the height of the limiting rib is smaller than the height of the skirt.

[0013] In some embodiments, a detachable positioning pin is provided between the cover and the pump head.

[0014] In some embodiments, the fitting clearance between the limiting rib and the outer wall of the second boss is not less than 1 mm.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] When not pressed, the limiting rib corresponds to the outer wall of the outer wall of the first boss. During the pressing and rebounding process, the limiting rib can provide a good limiting effect, so that the pump head will not shake left and right. At this time, the water attached between the limiting rib and the first boss will be driven to the second boss. The outer diameter difference between the second boss and the first boss is used to increase the weight of the attached water, and the outer diameter difference makes it easier for the water to flow out, reducing the possibility of being sucked into the bottle.

[0017] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative effort.

[0019] Figure 1 The present invention is a structural diagram of a head-pressed waterproof structure according to an embodiment.

[0020] Figure 2 It is a structural schematic diagram of a head-pressed waterproof structure under another embodiment.

[0021] Figure 3 The present invention is a schematic structural diagram of a pump head in a head-pressed waterproof structure according to an embodiment.

[0022] Figure 4 The present invention is a structural schematic diagram of a cover body in a head-pressed waterproof structure according to an embodiment.

[0023] Figure 5 The present invention is a schematic cross-sectional view of a head-type waterproof structure according to an embodiment. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of the present invention, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be directly connected to the other device but with an intervening device.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0028] The applicant found that:

[0029] In order to ensure the limiting support function when pressing downward, the traditional pump body structure has a very small gap between the cover and the pump head. In some bathroom shower spraying scenarios, because negative pressure will be generated in the bottle body during the pressing of the pump head, driven by negative pressure, water can easily flow along this gap. As the pump head is continuously pressed and sucked, it will flow into the bottle along the pump head, causing contamination of the substances in the bottle and a poor user experience.

[0030] In view of this, refer to Figures 1 to 5 This embodiment provides a head-mounted waterproof structure, including:

[0031] The cover body 10 has a first boss 11 extending upwardly at the top thereof, and a second boss 12 is connected to the top of the first boss 11, and the outer diameter of the second boss 12 is smaller than that of the first boss 11. It should be noted that in some embodiments, the first boss 11 and the second boss 12 are cylindrical bosses with the same outer diameter at the top and bottom, and the cylindrical outer diameter of the second boss 12 is smaller than that of the first boss 11. In other embodiments, the first boss 11 and the second boss 12 are conical bosses, that is, the maximum outer diameter of the second boss 12 is smaller than the minimum outer diameter of the first boss 11.

[0032] The pump head 20 has a skirt 21 at its lower portion, and a plurality of spaced limiting ribs 22 are provided on the inner wall of the skirt 21. The plurality of limiting ribs 22 form a limiting ring 23 along the inner wall of the skirt 21. The center of the limiting ring 23 is hollow, and the first boss 11 is accommodated in the limiting ring 23. Under the action of the limiting ring 23 formed by the limiting ribs 22, it can be ensured that when the pump head 20 is pressed, the first boss 11 moves up and down relatively in the limiting ring 23 without shaking. The relative displacement between the pump head 20 and the cover body 10 is limited by the gap limiting relationship between the first boss 11 and the limiting ring 23.

[0033] The fitting clearance between the limiting rib 22 and the outer wall of the first boss 11 is smaller than the fitting clearance between the limiting rib 22 and the outer wall of the second boss 12. During the multiple pressing and rebounding processes of the pump head 20, when the water in the gap between the limiting rib 22 and the first boss 11 is driven upward to the gap between the outer wall of the second boss 12, due to the increase in the gap, more water can be attached and accommodated in this gap, so that the suction force generated by the pump body on the water is smaller than the gravity of the water itself, and the water will not be sucked into the pump body, causing the pump core function to fail and preventing water from flowing into the bottle.

[0034] Combine Figure 5 As an embodiment, the outer wall surface of the second boss 12 is provided with screw threads, the first boss 11 and the second boss 12 are coaxially arranged, and a waterproof step 13 is formed by the outer diameter difference between the first boss 11 and the second boss 12, which further enhances the waterproof effect.

[0035] Combine Figure 5 As an embodiment, an arc segment 24 is provided on the inner side of the bottom end of the limiting rib 22. When the pump head 20 is in an unpressed state, the arc segment 24 corresponds to the waterproof step 13. The arc segment 24 is located obliquely above the waterproof step 13. The water between the limiting rib 22 and the second boss 12 is more likely to flow out of the waterproof step 13 under the drainage action of the arc segment 24.

[0036] Preferably, the height of the limiting rib 22 is smaller than the height of the skirt 21 , which can provide a good limiting effect without affecting the normal pressing of the pump head 20 .

[0037] Reference Figure 1Preferably, a detachable positioning pin 30 is provided between the cover 10 and the pump head 20. The positioning pin 30 is used to lock the pump head 20 from being pressed down, thereby facilitating the transportation and disassembly of the overall structure and improving reliability. Figure 1 As shown, a push-head waterproof structure with a positioning pin 30 is shown.

[0038] Preferably, the fitting clearance between the limiting rib 22 and the outer wall of the second boss 12 is not less than 1 mm, and the fitting clearance between the limiting rib 22 and the outer wall of the first boss 11 is less than 0.5 mm. When the fitting clearance suddenly increases by more than double, the water attached to the gap will easily fall off.

[0039] In summary, compared with the prior art, the above embodiment provides a waterproof structure for pressing the head. When not pressed, the limiting rib 22 corresponds to the outer wall of the outer wall of the first boss 11. During the pressing and rebound process, the limiting rib 22 can provide a good limiting effect, so that the pump head 20 will not swing left and right. At this time, the water attached between the limiting rib 22 and the first boss 11 will be driven to the second boss 12. The outer diameter difference between the second boss 12 and the first boss 11 is used to increase the weight of the attached water, and the outer diameter difference makes it easier for the water to flow out, reducing the possibility of being sucked into the bottle.

[0040] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A waterproof structure with a push button, characterized in that: include: A cover body, wherein a first boss extending upward is provided on the top of the cover body, a second boss is connected to the top of the first boss, and the outer diameter of the second boss is smaller than that of the first boss; The pump head comprises a skirt at the lower part of the pump head, a plurality of spaced-apart limiting ribs on the inner wall of the skirt, and the plurality of limiting ribs form a limiting circle along the inner wall of the skirt. The first boss is accommodated in the limiting circle, and the fitting clearance between the limiting rib and the outer wall of the first boss is smaller than the fitting clearance between the limiting rib and the outer wall of the second boss.

2. A waterproof structure according to claim 1, characterized in that: The outer wall surface of the second boss is provided with screw threads, the first boss and the second boss are coaxially arranged, and a waterproof step is formed by the difference in outer diameters between the first boss and the second boss.

3. A waterproof structure according to claim 2, characterized in that: An arc section is provided on the inner side of the bottom end of the limiting rib, and when the pump head is in an unpressed state, the arc section corresponds to the waterproof step.

4. A waterproof structure according to claim 3, characterized in that: The height of the limiting rib is smaller than the height of the skirt.

5. A waterproof structure according to claim 4, characterized in that: A detachable positioning pin is provided between the cover body and the pump head.

6. A waterproof structure according to claim 5, characterized in that: The fitting clearance between the limiting rib and the outer wall of the second boss is not less than 1 mm.

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