Liquid cosmetic container and pump device for liquid cosmetic container

Abstract

The utility model provides a liquid cosmetic container which comprises a container body for containing contents by improving the sealing performance between a pump component and the container. A pump device coupled to the top opening of the container body and discharging the contents by an elastic pumping action; the discharge head is connected with the pump device and applies discharge pressure, and the front end of the discharge head is provided with a content outlet; according to the pump device, the air tightness is remarkably improved through a double-sealing structure of the annular ribs and the grooves. Sealing is achieved through the annular rib formed on the lower end flange of the pump component, and compared with a sealing structure between the lower end flange and the shoulder shell of a traditional pump component, poor combination can be prevented, and air tightness can be improved.

Description

[Technical Field]

[0001] This utility model relates to cosmetic containers and pump devices for cosmetic containers, and more particularly to a liquid cosmetic container and a pump device for the same. [Background Technology]

[0002] For example, liquid cosmetics are contained in a container and used by dispensing a measured amount of the contents from the container. The liquid cosmetic container has a pump device located inside the container body to pump the contents to the outside. The pump device is pressed by the user, thereby pumping the contents and discharging them through the container outlet.

[0003] The applicant has improved upon the traditional pump structure by reducing the number of components to simplify the structure and developed a cosmetic container that can smoothly dispense a fixed amount of contents. Korean Patent Registration Nos. 10-1805595 and 10-2110708 disclose liquid cosmetic containers developed and patented by the applicant.

[0004] These pump devices require precision manufacturing to ensure smooth discharge from cosmetic containers. This is especially crucial when cosmetic containers are sealed, requiring complete protection from external airflow; the seal between the pump and the container, as well as the discharge function via the valve, are paramount. Therefore, the pump device has a complex structure and demands high precision.

[0005] The difficulty in manufacturing pump devices and the susceptibility to damage or defects during assembly lead to cumbersome assembly processes and low production efficiency, which in turn increases the manufacturing cost of cosmetic containers.

[0006] In recent years, with the increasing use of liquid cosmetics, the market demand for cosmetic containers that can meet pumping performance requirements while also offering lower costs has been growing. Therefore, there is a need to develop improved cosmetic containers that meet market demands and are more competitive. [Utility Model Content]

[0007] The purpose of this invention is to provide a liquid cosmetic container and a pump device for the liquid cosmetic container that improves the sealing between the pump component and the container.

[0008] The purpose of this invention is to provide a liquid cosmetic container and a pump device for the liquid cosmetic container that improves the assemblability of pump components and prevents assembly damage.

[0009] The purpose of this invention is to provide a liquid cosmetic container and a pump device for the liquid cosmetic container that make the pump components operate more smoothly.

[0010] The technical solution of this utility model: The liquid cosmetic container includes: a container body that contains the contents; a pump device that is attached to the top opening of the container body and discharges the contents through its own elastic pumping action; and a discharge head that is connected to the pump device and applies discharge pressure to it, and has a contents outlet at the front end that is connected to the pump device.

[0011] The cosmetic container may also include a piston component that is slidably installed inside the container body, thereby pushing the contents toward the container body outlet as they are discharged through the outlet during use.

[0012] The pump assembly includes: a shoulder housing tightly installed at the opening and communicating with the opening through a central through hole, with a discharge head slidably mounted on its open top; a pump component located inside the working cavity of the shoulder housing, forming a content receiving space and conveying the content unidirectionally through axial elastic compression / expansion; a nozzle component connected to the discharge head at the top and to the top of the pump component at the bottom, forming a content flow path inside, which compresses the pump component with the operation of the discharge head and selectively opens and closes the flow path and the passageway between the flow path and the internal space of the pump component; and a sealing part that seals the gap between the pump component and the shoulder housing to prevent the inflow of external air.

[0013] The pump component includes: a lower flange installed at the bottom of the working chamber of the shoulder housing; a check valve integrally formed with the lower flange, which selectively opens and closes a through hole to unidirectionally introduce contents into the pump component; a pressure section integrally formed with the lower flange, which forms a space communicating with the check valve and changes the internal space pressure through external compression and elastic recovery; a mounting section integrally formed with the top of the pressure section and connected to a nozzle component or a discharge head; a sealing section formed at the lower end of the inner wall of the mounting section and in close contact with the nozzle component to block the flow path between the pressure section and the nozzle component; and a telescopic section provided between the mounting section and the sealing section, which opens and closes the passage through external compression and elastic recovery.

[0014] The pump components may be made of silicone, rubber, or synthetic resin.

[0015] The elastic coefficient of the telescopic part is greater than that of the pressure part, so that the pressure part deforms preferentially under the action of external force.

[0016] The nozzle component includes: a connecting part that connects to the discharge head; a nozzle body that extends integrally with the connecting part into the interior of the pump component and forms a flow path with a central outlet; a side hole provided on the side wall of the nozzle body and connecting the flow path with the internal space of the telescopic part; and a valve seat provided at the end of the nozzle body, sealing the front end of the flow path and in close contact with the sealing part to block the pressure part from the telescopic part.

[0017] The nozzle body has an inner concave outer wall at the position corresponding to the telescopic part, forming a space that is separate from the inner wall of the telescopic part.

[0018] The sealing part includes: an annular groove surrounding the bottom through hole of the working chamber of the shoulder shell; and an annular rib formed at the bottom of the lower flange of the pump component, inserted into the annular groove and tightly fitted.

[0019] The annular rib can achieve sealing by having its upper inner wall contact the inner wall of the annular groove, or its upper outer wall contact the outer wall of the annular groove.

[0020] The annular rib can also achieve sealing by contacting the outer wall of the annular groove with its lower outer wall, or by contacting the inner wall of the annular groove with its lower inner wall.

[0021] The outer diameter of the annular rib is smaller than the outer diameter of the annular groove, the inner wall is a downwardly expanding slope, and the upper inner diameter is smaller than the inner diameter of the annular groove.

[0022] The pump device also includes an axial exhaust groove on the inner wall of the shoulder housing, used to exhaust air between the bottom surface of the shoulder housing and the lower flange to prevent air interference during assembly.

[0023] The pump component may also include a protruding limiting component located on the outside of the mounting portion, which contacts the pressure portion to prevent excessive deformation of the pressure portion.

[0024] The advantages of this utility model are as follows: 1. This utility model achieves sealing by utilizing an annular rib formed on the lower flange of the pump component. Compared with the traditional sealing structure between the lower flange and the shoulder shell of the pump component, it can prevent poor connection and improve airtightness. 2. The annular rib is tightly attached to the annular groove of the shoulder shell in two stages to maintain airtightness, thereby significantly enhancing the sealing performance. 3. During the assembly of the pump component, air is discharged through the gap between the lower flange and the inner wall of the shoulder shell, allowing the lower flange to smoothly embed into the shoulder shell and complete the connection. 4. In addition, because the lower flange and the internal structure of the shoulder shell are stably connected, damage to the built-in check valve can be prevented. 5. The limiting structure set in the pump component suppresses excessive deformation of the pressure section, ensuring that the pressure section smoothly returns to its initial state after the external force is removed, thereby maintaining stable operation regardless of the applied pressure. 6. The assembly of the pump component and the shoulder shell is simpler, and it can avoid defects in the assembly process, reduce manufacturing costs, and improve the product's price competitiveness. [Attached Image Description]

[0025] Figure 1 This is a cross-sectional schematic diagram of the cosmetic container of this utility model.

[0026] Figure 2 This is a three-dimensional schematic diagram of the shoulder shell of the cosmetic container of this utility model.

[0027] Figure 3 This is a cross-sectional schematic diagram of the cosmetic container pump component of this utility model.

[0028] Figure 4 This is a schematic diagram illustrating the working principle of the cosmetic container of this utility model.

[0029] Figure 5 This is a schematic diagram of the sealing structure of the cosmetic container of this utility model.

[0030] In this designation, 100 is the container body, 110 is the opening, 120 is the container lid, 130 is the piston assembly, 132 is the sealing gasket, 200 is the pump assembly, 210 is the shoulder shell, 211 is the discharge port, 212 is the working chamber, 213 is the bottom surface, 214 is the recessed portion, 2141 is the inner side wall, 2142 is the outer side wall, 217 is the internal threaded portion, 220 is the pump assembly, 221 is the lower flange, 222 is the pressure section, and 223 is the ring. 2231 is the inner wall surface, 2232 is the outer wall surface, 224 is the mounting part, 226 is the check valve, 228 is the sealing part, 230 is the telescopic part, 240 is the limiting part, 250 is the nozzle part, 251 is the flow channel, 252 is the nozzle body, 254 is the connecting part, 258 is the side hole, 260 is the valve seat, 262 is the support plate, 270 is the exhaust groove, 300 is the discharge head, 310 is the pipeline, and 320 is the outlet.

Detailed Implementation Methods

[0031] The embodiments of this utility model are described in detail below. It should be noted that this description is merely exemplary and does not constitute a limitation on the scope of protection of this utility model, which is defined by the claims. Various adjustments can be made to the embodiments without departing from the core of the utility model, and the same or similar parts in the drawings are represented by the same reference numerals.

[0032] The terminology used herein is for the purpose of describing particular embodiments only and is not limiting. The singular form includes the plural meaning unless expressly excluded. The word "comprising" means that the described features, regions, integers, steps, elements, and / or components are present, but does not exclude the presence or addition of other features, regions, integers, steps, elements, components, and / or combinations thereof.

[0033] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. However, the embodiments are merely illustrative and do not constitute a limitation on the invention.

[0034] Figure 1 This is a schematic diagram of a cosmetic container according to one embodiment. Figure 2 and Figure 3 This is a schematic diagram of a pump device for a cosmetic container.

[0035] For ease of description, in Figure 1 In this context, the line passing through the center of a cosmetic container is called the central axis. The side closer to the central axis is called the inner side, and the side farther away is called the outer side. Furthermore, the axial direction refers to the direction of the central axis. Figure 1The middle refers to the y-axis direction. "Above" or "upper part" refers to the area above the cosmetic container along the y-axis when it is placed on the ground, while "below" or "lower part" refers to the opposite, below.

[0036] As shown in the figure, the cosmetic container in this embodiment includes a container body 100, a pump device 200, and a discharge head 300.

[0037] The container body 100 can be a tubular structure with an internal space for containing contents. Various types of cosmetics (hereinafter referred to as contents) can be filled into the internal space of the container body 100. The contents can also be external medical products such as disinfectants or daily necessities such as detergents. The shape of the container body 100 can be varied.

[0038] The container body 100 has an opening 110 at the top, which is connected to a pump device 200. The contents are discharged from the opening 110 through the pump device 200 and transported to the outside through the discharge head 300.

[0039] A container cover 120 is detachably installed on the top of the container body 100. The container cover 120 is installed on the upper end of the container body 100, covering the opening 110 and the pump device 200, isolating the pump device 200 from the outside and preventing accidental operation.

[0040] The pump assembly 200 is detachably connected to the opening 110 of the container body 100. For example, the outer wall of the opening 110 has external threads, and the inner wall of the pump assembly 200 has internal threads, and the two can be connected by a threaded connection. The two can also be connected by various other methods besides a threaded connection, without any particular limitation.

[0041] The discharge head 300 is vertically movably coupled to the pump device 200, and the discharge head 300 can be pressed axially to drive the pump device 200. The discharge head 300 has an internal conduit 310 communicating with the pump device 200, and a content outlet 320 communicating with the conduit 310 at its front end. The content conveyed through the conduit 310 is discharged from the outlet 320. When the discharge head 300 is pressed, the pump device 200 is driven, and the content discharged by the pump device 200 is discharged through the conduit 310 from the outlet 320. The shape of the discharge head 300 can be varied.

[0042] A piston component 130 may be installed inside the container body 100, which moves upward as the contents are consumed, ensuring that the contents are continuously delivered to the opening 110.

[0043] The opening 110 at the top of the container body 100 is sealed by the pump device 200. When the contents are discharged from the container body, the negative pressure formed inside the container body 100 pushes the piston component 130 upward.

[0044] The piston component 130 is slidably inserted into the container body 100. As the piston component 130 continuously pushes the contents upward, the contents remain filled between the top opening 110 of the container body 100 and the piston component 130. The cross-sectional shape of the piston component 130 corresponds to the internal shape of the container body 100, allowing it to slide up and down inside the container body 100. A sealing gasket 132 is provided on the outer edge of the piston component 130, which fits tightly against the inner wall of the container body 100 to achieve a seal between the two components and slides smoothly upward along the inner wall.

[0045] In this embodiment, the pump device 200 is connected to the top opening 110 of the container body 100 and transports the contents of the container body 100 to the discharge head 300 according to the operation of the discharge head 300.

[0046] The pump device 200 changes the internal pressure through its own elastic pumping action, thereby achieving the discharge of the contents.

[0047] The following details the configuration of the pump device 200 of this embodiment.

[0048] The pump device 200 of this embodiment includes: a shoulder housing 210, a pump component 220, and a nozzle component 250. It may also include a sealing portion. The sealing portion is used to close the gap between the pump component 220 and the shoulder housing 210 to prevent external air from flowing into the container body 100 through the shoulder housing 210.

[0049] Therefore, during the process of discharging the contents of the container body 100 through the pump device 200, it is possible to completely prevent external air from entering the container body 100 and ensure that the contents are isolated from the external environment.

[0050] like Figure 2 As shown, a contents discharge hole 211 is formed through the center of the shoulder shell 210. The shoulder shell 210 has a working cavity 212 that communicates with the opening 110 through the discharge hole 211. The top of the working cavity 212 is open, and the discharge head 300 is mounted therein in a way that allows it to slide up and down.

[0051] The shoulder housing 210 is detachably connected to the opening 110 by threads. For example, the lower inner wall of the shoulder housing 210 has an internal thread 217, which is screwed onto the external thread of the outer wall of the opening 110. An O-ring for sealing can be added between the internal thread 217 and the opening 110.

[0052] The bottom surface 213 of the working chamber 212 forms an annular groove 214 of predetermined depth around the discharge hole 211. The annular rib 223 of the pump component 220, described later, is embedded in and tightly attached to this groove 214. Details of this sealing structure will be described later.

[0053] The working chamber 212 provides space for the discharge head 300 to slide up and down, and accommodates the elastic deformation of the pump component 220 that is coupled with the discharge head 300.

[0054] The pump component 220 is disposed in the working chamber 212 of the shoulder shell 210, and its interior forms a content-accommodating space. It achieves unidirectional delivery of the content through its own axial elastic compression or expansion.

[0055] Figure 3 The structure of the pump component 220 in this embodiment is shown.

[0056] like Figure 3 As shown, the pump component 220 is a one-piece molded structure, including: a lower flange 221, a pressure section 222, a mounting section 224, a telescopic section 230, a sealing section 228, a check valve 226, and an annular rib 223. This integrated design reduces the number of components and lowers manufacturing costs.

[0057] The pump component 220 is made of elastic materials such as rubber, silicone or synthetic resin, which can be compressed to reduce volume under external force, and expand to recover volume after the external force is removed.

[0058] The lower flange 221 is fitted into the bottom surface 213 of the shoulder shell 210. A check valve 226 is provided inside the lower flange 221. The check valve allows the contents to flow unidirectionally into the pressure section 222 through the discharge port 211 by selectively opening and closing the discharge port 211.

[0059] In this embodiment, when the lower flange 221 is fitted into the bottom surface 213, the check valve 226 is tightly pressed against the discharge port 211 to close the port. The check valve 226 opens or closes according to the internal pressure change of the pump component 220, allowing only the contents to flow from the container body 100 towards the pump component 220. Specifically: when the internal pressure of the pump component 220 decreases, the check valve 226 separates from the discharge port 211, the discharge port 211 opens, and the contents of the container body 100 flow into the pump component 220 through the discharge port 211; when the internal pressure of the pump component 220 increases, the check valve 226 presses against the discharge port 211, closing the discharge port 211 and preventing backflow of the contents. The specific structure of the check valve 226 can be adjusted according to the unidirectional flow requirement.

[0060] The bottom of the lower flange 221 protrudes downward to form an annular rib 223, which is embedded in the groove 214 of the shoulder shell 210.

[0061] The pump component 220 is stably supported on the shoulder housing 210 by the engagement of the lower flange 221 with the bottom surface 213 of the shoulder housing 210. At the same time, the engagement of the annular rib 223 with the groove 214 achieves a seal between the two components.

[0062] The pressure section 222 is integrally formed with the lower flange 221, and an internal space is formed that communicates with the lower flange 221; the pressure section 222 changes its internal pressure by external compression or elastic recovery.

[0063] In this embodiment, the pressure unit 222 changes its internal pressure through elastic compression and expansion, driven by the discharge head 300. The internal space of the pressure unit 222 is directly connected to the check valve 226 below, and the contents flow in from the check valve 226 and are temporarily stored in the internal space of the pressure unit 222.

[0064] The pressure section 222 changes the pressure to achieve a pumping effect by compressing or expanding the internal cavity through elastic deformation.

[0065] When an external force is applied to the pump component 220 via the discharge head 300, the force is transmitted to the pressure section 222, which elastically deforms, compressing its internal space. As the pressure section 222 continues to compress, the internal pressure gradually increases. When the internal pressure is relatively higher than that of the container body 100, the check valve 226 remains closed. The pressurized contents are eventually discharged from the discharge head 300 through the nozzle component 250.

[0066] When the external force on the pump component 220 is released, the pressure section 222 expands and returns to its original shape due to its own elastic restoring force. The expansion of the internal space of the pressure section 222 causes its pressure to be relatively lower than that of the container body 100. At this time, the check valve 226 opens, and the contents of the container body 100 are re-injected into the internal space of the pressure section 222 through the check valve 226 to replenish it.

[0067] In this embodiment, the mounting portion 224 and the top of the pressure portion 222 are integrally formed to constitute the upper end of the pump component 220, and can be connected to the discharge head 300 or the nozzle component 250. The top of the pump component 220 can be supported by the discharge head 300 or the nozzle component 250 via the mounting portion 224. In all embodiments, the pump component 220 undergoes elastic deformation due to being pressed by the discharge head 300 or the nozzle component 250 on it during the operation of the discharge head 300.

[0068] The following description uses the structure of mounting part 224 combined with nozzle part 250 as an example.

[0069] The mounting portion 224 is fitted into the nozzle component 250 in a close manner. The mounting portion 224 may selectively communicate with the internal flow channel 251 of the nozzle component 250.

[0070] The nozzle component 250 is inserted into the open front end of the mounting part 224.

[0071] The top of the mounting portion 224 is pressed and sealed by the support plate 262 of the nozzle component 250, which will be described later. Therefore, when the discharge head 300 is activated, the mounting portion 224 on the top of the pump component 220 is pressed by the support plate 262, and the mounting portion 224 forms a tight fit with the outer wall of the nozzle component 250 and the support plate 262.

[0072] The inner wall of the mounting part 224 is provided with a tight-fitting part 228. The inner diameter of the lower end of the inner wall of the mounting part 224 is enlarged by a stepped process. The upper side of the tight-fitting part 228 is flush with the inner wall of the mounting part 224, and the inner diameter of the tight-fitting part 228 is larger than the inner diameter of the mounting part 224.

[0073] The sealing part 228 is an enlarged diameter structure formed on the inner wall of the lower end of the mounting part 224, which forms a blocking channel when it contacts the valve seat 260 of the nozzle component 250.

[0074] That is, when the stepped inner surface of the sealing part 228 is in close contact with the valve seat 260, it blocks the passage between the lower pressure part 222 and the upper telescopic part 230; when it separates from the valve seat 260, it forms a channel for the contents to flow.

[0075] The telescopic part 230 is located between the mounting part 224 and the sealing part 228, and the passage between the sealing part 228 and the valve seat 260 is opened or closed by external force compression and elastic recovery.

[0076] When the top of the mounting part 224 is supported by the support plate 262, the sealing part 228 elastically presses the valve seat 260 to maintain the closed state between the two.

[0077] The axial length of the mounting portion 224, i.e. the distance from the top to the stepped surface of the sealing portion 228, changes with the elastic deformation of the telescopic portion 230, thereby controlling the separation or closure of the sealing portion 228 and the valve seat 260.

[0078] Therefore, in this embodiment, the telescopic part 230 and the side wall of the mounting part 224 are integrally formed, and elastically deformed under the drive of the discharge head 300 to change the axial length of the mounting part 224.

[0079] The telescopic part 230 is driven by the discharge head 300 and its own elasticity compresses or expands along the axial direction, causing the overall length of the mounting part 224 to change.

[0080] When the external force compresses the telescopic part 230, the length of the mounting part 224 shortens, and the horizontal stepped surface of the sealing part 228 separates from the valve seat 260 to form a gap. At this time, the passage between the pump component 220 and the nozzle component 250 is opened, and the contents flow into the nozzle component 250 through the gap.

[0081] After the external force is released, the compressed telescopic part 230 elastically recovers, the length of the mounting part 224 returns to its original state, and the horizontal stepped surface of the sealing part 228 presses the valve seat 260 again, blocking the discharge of contents.

[0082] In this embodiment, the elastic coefficient of the telescopic part 230 is relatively greater than that of the pressure part 222. Since the pump component 220 is integrally formed from the same material, the difference in elastic coefficient can be achieved by changing the shape or cross-sectional structure of the telescopic part 230 and the pressure part 222, for example, by increasing the wall thickness of the telescopic part.

[0083] Therefore, when an external force is applied to the pump component 220, the pressure section 222, which has a lower elastic modulus, is preferentially compressed and deformed. As the external force continues to act, the telescopic section 230, which has a higher elastic modulus, is subsequently compressed, and its length contraction opens the gap between the sealing section 228 and the valve seat 260, allowing the pressurized contents in the pressure section 222 to be discharged into the nozzle component 250 through the gap.

[0084] Conversely, when the external force applied to the pump component 220 is released, the expansion joint 230, with a relatively large elastic coefficient, expands and deforms first due to its elastic restoring force, returning to its original shape. The expansion joint 230's return to its original shape causes its length to elongate, and the stepped surface of the sealing joint 228 comes into close contact with the valve seat 260, blocking the passage between the two components. Subsequently, the pressure section 222 expands and deforms due to its elastic restoring force, returning to its original shape. During the expansion and deformation of the pressure section 222, a negative pressure is created within its internal space. Because the sealing joint 228 and the valve seat 260 remain closed, the contents of the container body 100 flow into the internal space of the pressure section 222 under the action of negative pressure through the check valve 226.

[0085] The smooth pumping of contents is achieved by the sequential operation of the pressure unit 222 and the telescopic unit 230.

[0086] The pump component 220 in this embodiment also includes a limiting component 240. The limiting component 240 protrudes from the outside of the mounting portion 224, and when the pressure portion 222 deforms, the limiting component 240 contacts the pressure portion 222 to prevent excessive deformation.

[0087] This ensures that the pressure section 222 can smoothly return to its original state after the external force is removed.

[0088] The limiting component 240 is continuously formed along the outer wall of the mounting portion 224.

[0089] In this embodiment, the limiting member 240 may be disposed between the telescopic part 230 and the pressure part 222, and preferably between the telescopic part 230 and the close contact part 228.

[0090] When the pressure part 222 is compressed and deformed, the limiting member 240 contacts the pressure part 222 and prevents the pressure part 222 from deforming excessively in the direction of the telescopic part 230.

[0091] Here, "excessive deformation" refers to a permanent deformation state that exceeds the elastic recovery limit. If the pressure part 222 is excessively bent, it will be difficult to recover.

[0092] Figure 4 The working mechanism of the limiting component in this embodiment is demonstrated.

[0093] like Figure 4 As shown, when the pump component 220 is pressed by an external force, the pressure part 222 expands and bends outward, and the lower end of the mounting part 224 is pressed into the pressure part 222. At this time, the pressure part 222 bends and folds outward, undergoing elastic compression deformation.

[0094] The limiting member 240 formed by the protrusion of the outer wall of the mounting part 224 prevents the pressure part 222 from deforming excessively. Specifically, when the pressure part 222 is compressed and bent and the mounting part 224 is pressed into the pressure part 222, the limiting member 240 contacts the pressure part 222 and prevents it from continuing to deform in the direction of the telescopic part 230.

[0095] The limiting component 240 acts as a mechanical stop to ensure that the pressure part 222 does not exceed its elastic deformation range when subjected to continuous external force. After the external force is removed, when the pump component 220 returns to its original state, the pressure part 222 can fully recover through elasticity.

[0096] By limiting the pressure section 222 to prevent excessive deformation through the restraining effect of the limiting component 240, the pump component 220 can operate stably under different external force conditions when the discharge head 300 is subjected to it.

[0097] The nozzle component 250 includes: a connecting portion 254 that engages with the discharge head 300; a nozzle body 252 extending from the connecting portion 254 into the interior of the pump component 220, with a flow channel 251 at its center communicating with the outlet 320 of the discharge head; a side hole 258 formed on the side wall of the nozzle body 252, communicating with the flow channel 251 and the interior of the telescopic portion 230; and a valve seat 260 formed at the end of the nozzle body 252, sealing the front end of the flow channel 251 and tightly abutting the sealing portion 228, blocking the passage between the pressure portion 222 and the telescopic portion 230.

[0098] The outer wall of the connecting part 254 is integrally formed with a support plate 262, which protrudes outward to support the top of the mounting part 224 of the pump component 220.

[0099] The nozzle component 250 is attached to the mounting portion 224, connecting the pump component 220 and the discharge head 300. The internal flow channel 251 of the nozzle component 250 forms the content flow path. The flow channel 251 communicates with the outlet 320 through the interior of the discharge head 300. When the discharge head 300 is driven, the nozzle component 250 compresses the pump component 220 and controls the on / off connection between the sealing portion 228 and the valve seat 260.

[0100] With the nozzle body 252 and the mounting portion 224 of the pump component 220 engaged, as previously described, the upper end of the pump component 220 is supported by a support plate 262 protruding from the outer side of the connecting portion 254. The lower end of the pump component 220 is fitted into the shoulder shell groove 214 via an annular rib 223, and the upper end is supported by the support plate 262, forming a two-way fixed structure.

[0101] The nozzle body 252 has a concave outer wall at the position corresponding to the telescopic part 230, so that a gap is maintained between it and the inner wall of the telescopic part, ensuring that the telescopic part 230 can be freely and elastically deformed and that the contents of the pump component 220 can flow smoothly into the mounting part 224 and the nozzle body 252.

[0102] The nozzle body 252 has one or more side holes 258 in its concave wall, allowing the contents flowing between the mounting part 224 and the nozzle body 252 to enter the flow channel 251 through the side holes 258.

[0103] A valve seat 260 is integrally formed at the lower end of the nozzle body 252. When the valve seat 260 is in close contact with the stepped surface of the sealing part 228, it blocks the passage between the flow channel 251 and the pressure part 222 and the telescopic part 230.

[0104] When the discharge head 300 is driven, the telescopic part 230 is compressed and its axial length is shortened. The valve seat 260 separates from the sealing part 228 to form a gap. The contents in the pressure part 222 enter the flow channel 251 through this gap and are finally discharged from the outlet 320.

[0105] The sealing part is used to seal the gap between the pump component 220 and the shoulder housing 210 to prevent external air from seeping into the container body 100.

[0106] The sealing part of this embodiment includes: an annular groove 214 surrounding the discharge hole 211 at the bottom of the working chamber 212 of the shoulder shell; and an annular rib 223 protruding from the bottom of the lower flange 221 of the pump component and tightly fitted into the groove 214.

[0107] When the annular rib 223 is fitted into the groove 214, the upper inner inclined surface 2231 of the annular rib 223 is pressed and sealed against the inner upper wall 2141 of the groove 214. The annular rib 223 is designed as an inclined surface structure that gradually expands downward in the inner radial direction, and its upper inner diameter... Figure 3 L2 is smaller than the inner diameter of the groove 214 Figure 2 L4 in the middle.

[0108] The annular rib 223 can be smoothly embedded into the groove 214, and its upper inner inclined surface 2231 forms a pressure fit with the upper wall 2141 of the groove to achieve efficient sealing.

[0109] As another embodiment, such as Figure 5As shown, the annular rib 223 expands outward when inserted into the groove 214, so that the upper inner wall surface 2231 of the annular rib 223 contacts the upper inner side wall 2141 of the groove 214, while the lower outer wall surface 2232 of the annular rib 223 contacts the lower outer side wall 2142 of the groove 214, forming a sealing structure.

[0110] Thus, the annular rib 223 fits tightly against the inner and outer walls of the groove 214 at both the upper and lower parts of the groove 214, improving airtightness through multi-stage sealing.

[0111] To achieve this structure, the outer diameter of the annular rib 223 in this embodiment is... Figure 3 L1 is smaller than the diameter of the outer wall of the groove 214 Figure 2 L3, and its inner wall surface 2231 is a downwardly expanding slope, with the upper inner diameter Figure 3 L2 is smaller than the inner wall diameter of the groove 214 Figure 2 L4 in the middle.

[0112] When the annular rib 223 is embedded in the groove 214, its upper inner inclined surface 2231 presses against the upper edge of the inner sidewall of the groove. The annular rib 223 is compressed and expands outward, causing its lower outer wall surface 2232 to contact the lower edge of the outer sidewall of the groove.

[0113] The annular rib 223 expands outward when inserted into the groove 214, forming a pressure seal with the upper inner wall 2141 and the lower outer wall 2142 of the groove 214.

[0114] In this embodiment, the pump component 220 achieves a reliable seal by contacting the inner wall 2231 and outer wall 2232 of the groove portion 2144 with the inner wall surface 2231 and outer wall surface 2232 of the annular rib 223, respectively.

[0115] In addition to the above structure, in another embodiment, the outer wall surface of the annular rib can be designed as a sloping structure. In this case, when the annular rib is inserted into the groove, its upper outer wall surface contacts the upper edge of the outer wall of the groove to form a seal; or a sealing method is adopted in which the upper outer wall surface and the lower inner wall surface of the annular rib respectively contact the upper edge of the outer wall of the groove and the inner wall.

[0116] In this embodiment, during the assembly process, the annular rib 223 can be smoothly inserted into the groove 214.

[0117] Since the seal is achieved by the fit between the groove 214 and the annular rib 223, the lower flange 221 of the pump component 220 can be easily installed to the bottom surface 213 of the working chamber of the shoulder housing 210.

[0118] The pump device 200 also includes an exhaust groove 270; the exhaust groove 270 extends axially along the inner wall of the working chamber 212 to form a gap between the outer wall of the lower flange 221 and the inner wall of the working chamber, for discharging air between the bottom surface 213 of the working chamber 212 and the lower flange 221.

[0119] In this embodiment, multiple exhaust grooves 270 are spaced apart circumferentially and extend axially. Preferably, two grooves are symmetrically distributed at 180° to ensure smooth air discharge.

[0120] When the pump component 220 is combined with the shoulder housing 210, the lower flange 221 fits against the bottom surface 213, and the annular rib 223 is tightly embedded in the groove 214 and sealed.

[0121] The exhaust groove 270 is an axial groove on the inner wall of the shoulder shell 210, formed between the outer edge of the lower flange 221 and the inner wall of the shoulder shell.

[0122] The exhaust groove 270 serves as an air exhaust channel, and a gap is formed between the lower flange 221 of the pump component 220 and the shoulder housing 210.

[0123] The exhaust groove 270 extends from the inner wall of the shoulder shell to the bottom surface 213, allowing the air between the lower flange 221 and the bottom surface 213 of the shoulder shell 210 to communicate with the outside through the exhaust groove 270.

[0124] During assembly, the air between the bottom surface 213 and the lower flange 221 is discharged through the exhaust groove 270 to prevent the flange from being misaligned or deformed due to air interference.

[0125] The sealing design of the groove 214 and the annular rib 223 ensures the airtightness between the pump component 220 and the shoulder housing 210. Even with the presence of the exhaust groove 270 to allow air to pass through, the pump component 220 and the shoulder housing 210 remain stably sealed.

[0126] After the air between the bottom surface 213 and the lower flange 221 is expelled, the lower flange 221 can be smoothly and completely embedded in the bottom surface 213.

[0127] The lower flange 221 can be smoothly and correctly installed into the working chamber 212 of the shoulder housing 210, preventing deformation of the lower flange 221 or damage to the check valve 226. In addition, it can prevent air interference and simplify the assembly process.

[0128] The above embodiments are merely examples. Those skilled in the art can make modifications without departing from the scope of the claims, and such modifications are all considered to be included within the protection scope of this utility model.

Claims

1. A liquid cosmetic product container comprising: A container body containing contents; A pump device coupled to the top opening of the container body and discharging the contents by its own elastic pumping action; An outlet head connected to the pump device and applying a discharge pressure thereto, the front end of which is provided with a contents outlet communicating with the pump device; the pump device comprises: a shoulder shell closely fitted to the opening and communicating with the opening through a central through-hole, the top opening of which is slidably fitted with the outlet head; a pump component provided in the internal working cavity of the shoulder shell, forming a contents containing space and unidirectionally transporting the contents by axial elastic compression / expansion; A nozzle component connected to the top of the outlet head and the top of the pump component, the inside of which forms a contents flow path, and compresses the pump component and selectively opens and closes the passage between the flow path and the internal space of the pump component with the operation of the outlet head; And a sealing part sealing the gap between the pump component and the shoulder shell to block the inflow of external air; characterized in that: the sealing part comprises: an annular groove part surrounding the through-hole at the bottom of the working cavity of the shoulder shell; and an annular rib formed at the bottom of the lower end flange of the pump component and closely fitted into the annular groove part.

2. The cosmetic container of claim 1, wherein: The pump component comprises: a lower end flange arranged at the bottom of the working cavity of the shoulder shell; a check valve integrally formed with the lower end flange and selectively opening and closing the through-hole to unidirectionally guide the contents into the internal space of the pump component; a pressure part integrally formed with the lower end flange, forming a space communicating with the check valve inside and changing the pressure of the internal space by external force compression and elastic recovery; a mounting part integrally formed with the top of the pressure part and connected to the nozzle component or the outlet head; a close-fitting part formed at the lower end of the inner wall of the mounting part and closely contacting with the nozzle component to block the flow path between the pressure part and the nozzle component; and an expansion part arranged between the mounting part and the close-fitting part and opening and closing the passage by external force compression and elastic recovery.

3. The cosmetic container of claim 2, wherein: The pump component further comprises a limiting component; the limiting component is protruded outside the mounting part, and when the pressure part is deformed, the limiting component contacts with the pressure part to prevent excessive deformation.

4. The cosmetic container according to any one of claims 1 to 3, characterized in that: The pump device further comprises an exhaust groove; the exhaust groove extends axially along the inner wall of the working cavity, forming a gap between the outer wall of the lower end flange and the inner wall of the working cavity, to discharge the bottom air.

5. A pump device for a liquid cosmetic container, the container comprising: A container body containing contents; a pump device coupled to the top opening of the container body; and an outlet head connected to the pump device and provided with a contents outlet; characterized in that the pump device comprises: a shoulder shell closely fitted to the opening and communicating with the opening through a central through-hole, the top opening of which is slidably fitted with the outlet head; a pump component provided in the internal working cavity of the shoulder shell, forming a contents containing space and unidirectionally transporting the contents by axial elastic compression / expansion; a nozzle component connected to the top of the outlet head and the top of the pump component, the inside of which forms a contents flow path, and compresses the pump component and selectively opens and closes the passage between the flow path and the internal space of the pump component with the operation of the outlet head; and a sealing part sealing the gap between the pump component and the shoulder shell to block the inflow of external air.

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