Pumping assembly for liquid dispensing device and liquid dispensing device

Abstract

The present invention provides a pumping assembly for a liquid dispensing device, the pumping assembly comprising: the pumping assembly comprising: a base; a pump core assembly arranged in the base, the pump core assembly and the base forming a sealed cavity with a variable volume; a pressing component arranged on the pump core assembly, the pressing component being used to press the pump core assembly so that the volume of the sealed cavity of the pump core assembly changes; and a top cover, the top cover being arranged on the upper part of the base and partially covering the pressing component so that a part of the pressing component is exposed to the outside. The pumping assembly according to the present invention has the characteristics of being firm and not easy to deform, so that the pressing component will not be stuck and unable to operate due to easy deformation. In addition, since it has a top cover that closely cooperates with the pressing component, and there is no large gap between the top cover and the pressing component, it will not cause damage to the fingers, ensuring the safety of operation.

Description

Technical Field

[0001] The present invention relates to a device for discharging liquid, and more particularly to a dispensing pump for a liquid dispensing device and a dispensing device comprising the dispensing pump. Background Art

[0002] With the continuous improvement of living standards, people pay more and more attention to their own image, so makeup is becoming more and more popular. People even think that makeup is a kind of respect and courtesy to friends or guests they are about to meet. Therefore, makeup is becoming more and more valued and welcomed by the public, especially women.

[0003] At present, some cosmetics, especially liquid cosmetics, are applied by sponges and then pressed onto the human face for homogenization, which causes waste of cosmetics. In addition, the used sponges are generally placed in the atmosphere, which makes the cosmetics adsorbed on the sponges easy to solidify and contaminate. Some liquid cosmetics are distributed by pushing a push rod, but this method of distributing liquid by pushing a push rod is cumbersome to operate and often requires the user to operate with both hands at the same time. Due to the obstruction of the arms, it is difficult for the user to check the current makeup status of the user and cannot adjust the makeup status in time, so the use process is cumbersome and complicated.

[0004] At present, various packaging including containers and their dispensing systems for household items, cosmetics and other items have been widely used and developed. The dispensing devices used in such packaging and their dispensing systems also need to be continuously improved to make them more convenient and user-friendly. In the process of use, the existing liquid dispensing containers have the problem that the dispensing pump is stuck, resulting in abnormal operation of the liquid dispensing container, and the dispensing pump is jerky, resulting in difficulty in operating the liquid dispensing device. These problems usually occur due to the deformation of some parts of the dispensing pump. In addition, some liquid dispensing devices are inconvenient to operate or hurt fingers due to the small pressing parts or other problems.

[0005] Therefore, there is a need in the art to provide a pumping assembly and a related liquid dispensing device that are relatively strong in structure, not prone to deformation and damage, and easy to operate without hurting the hands. Summary of the invention

[0006] In order to solve at least one aspect of the above technical problems, an embodiment of the present invention provides a pumping assembly for a liquid dispensing device, the pumping assembly comprising:

[0007] Pedestal;

[0008] A pump core assembly, which is disposed in the base and forms a sealed cavity with a variable volume with the base;

[0009] A pressing component, which is disposed on the pump core assembly and is used to press the pump core assembly to change the volume of the sealed cavity of the pump core assembly; and

[0010] The top cover is disposed on the upper portion of the base and partially covers the pressing member so that a portion of the pressing member is exposed to the outside.

[0011] According to a preferred embodiment of a pumping assembly for a liquid dispensing device of the present invention, the pressing component includes a pressing body portion with arc-shaped two sides, a pressing tail portion extending from the pressing body portion to the outer edge of the base, a liquid discharge channel arranged on a side of the pressing body portion opposite to the pressing tail portion, and a discharge nozzle arranged at the end of the liquid discharge channel.

[0012] In another preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the width of the liquid discharge channel in the lateral direction is smaller than the width of the pressing body portion, and the liquid discharge channel is lower than the pressing body portion in the longitudinal direction.

[0013] According to another preferred embodiment of the pumping assembly for a liquid dispensing device of the present invention, the top cover includes a first side wall arranged on a first side of a pressing body portion of a pressing component, a second side wall arranged on a second side of the pressing body portion of the pressing component, an end wall arranged above the liquid discharge channel, and a top wall connecting and covering the first side wall, the second side wall and the end wall.

[0014] In another preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the first side wall includes a first inner side wall that cooperates with the pressing body of the pressing component and is arranged on the outside of the pressing body, and a first outer side wall that cooperates with the arcuate side wall of the base and is arranged on the outside of the arcuate side wall.

[0015] According to another preferred embodiment of the pumping assembly for a liquid dispensing device of the present invention, a first fixing portion matching with the arc-shaped side wall of the base is provided on the first outer side wall.

[0016] In another preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the first fixing portion is a recessed portion provided in the first outer side wall.

[0017] According to another preferred embodiment of the pumping assembly for a liquid dispensing device of the present invention, a fastening structure is provided on the first outer side wall.

[0018] In yet another preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the fastening structure is a protrusion disposed on the first outer side wall.

[0019] According to another preferred embodiment of the pumping assembly for a liquid dispensing device of the present invention, the second side wall includes a second inner side wall that cooperates with the pressing body portion of the pressing component and is arranged on the outside of the pressing body portion, and a second outer side wall that cooperates with the arcuate side wall of the base and is arranged on the outside of the arcuate side wall.

[0020] In another preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the end wall includes an inner end wall cooperating with the pressing component and an outer end wall cooperating with the discharge nozzle, and recesses for accommodating the liquid discharge pipe are formed on the inner end wall and the outer end wall.

[0021] The present invention also provides a liquid dispensing device, which includes a storage container for storing liquid to be dispensed, a sliding sealing component arranged in the storage container, a pumping assembly arranged at the opening of the storage container, and a shell arranged outside the storage container and the pumping assembly, wherein the pumping assembly is any one of the pumping assemblies described above.

[0022] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0023] (1) The present invention proposes a pressing component and a top cover with an exquisite design, and a pumping assembly for a liquid dispensing device using the pressing component and the top cover, so that the pumping assembly has a perfect appearance structure and improves the visual effect of the appearance.

[0024] (2) Since the relatively moving parts of the pumping assembly according to the present invention maintain close contact during operation and provide a relatively small space between the relatively moving parts, it can provide safety protection for the operator and avoid the risk of the operator's fingers being pinched by the relatively moving parts.

[0025] (3) The pumping assembly according to the present invention has a pressing component with arc-shaped designs on both sides and a top cover with a corresponding matching shape, so that the top cover and the pressing component themselves have a relatively solid structure. In addition, through the combination of the top cover and the top of the base, the top of the base is also protected by the top cover, so that the top of the base is not easily deformed, so that the upper part of the pumping assembly according to the present invention has a more solid structure, making its operation smoother and preventing the pressing component from getting stuck, thereby greatly extending the service life of the pumping assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention.

[0027] Figure 1 A perspective view of a pumping assembly for a liquid dispensing device according to the present invention;

[0028] Figure 2 For along Figure 1 A cross-sectional view taken along line AA in FIG.

[0029] Figure 3 For along Figure 1 A cross-sectional view taken along line BB in FIG.

[0030] Figure 4 is a perspective exploded view of a pumping assembly according to the present invention;

[0031] Figure 5 is a perspective view of a top wall of a pumping assembly according to the present invention with a top cover removed;

[0032] Figure 6 is a three-dimensional view of a pressing component of a pumping assembly according to the present invention;

[0033] Figure 7 is a first perspective view of a top cover of a pumping assembly according to the present invention;

[0034] Figure 8 is a second perspective view of a top cover of a pumping assembly according to the present invention;

[0035] Fig. 9 is a perspective exploded view of a liquid dispensing device according to the present invention.

[0036] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiment is one embodiment of the present invention, not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Unless otherwise defined, technical or scientific terms used in the present invention shall have the common meanings understood by one having ordinary skills in the field to which the present invention belongs.

[0039] According to a preferred embodiment of the present invention, a pumping assembly 10 for a liquid dispensing device is provided, and the pumping assembly 10 has the characteristics of being firm and not easy to deform, so that the pumping assembly 10 will not be easily deformed, resulting in the situation that the pressing component is stuck and cannot be operated. In addition, because the pumping assembly 10 according to the present invention has a top cover that closely matches the pressing component, and there is no large gap between the top cover and the pressing component, it will not cause damage to the fingers, ensuring the safety of operation.

[0040] The structure of the pumping assembly 10 for a liquid dispensing device according to the present invention will be described in detail below with reference to the accompanying drawings. Figure 1 and Figure 4 As shown, the pumping assembly 10 mainly includes a base 12, a pump core assembly 14 arranged in the base 12, a pressing component 16 arranged on the pump core assembly 14, and a top cover 18 arranged on the upper part of the base 12 and partially covering the pressing component 16. Here, the base 12 serves as the shell of the entire pumping assembly 10, providing support for the pumping assembly 10. At the same time, the base 12 is also a connecting component between the pumping assembly 10 and the container storing the liquid to be dispensed, and has the function of sealing with the container storing the liquid. The pump core assembly 14 and the base 12 form a sealed cavity with a variable volume. The pump core assembly 14 is pressed by the pressing component 16 to achieve the change of the volume of the sealed cavity with a variable volume, thereby achieving the suction and discharge of the solution. The top cover 18 covers and covers the pressing component 16 and the base 12, so that the pumping assembly 10 according to the present invention has an aesthetic appearance and is convenient for the pressing operation of the pumping assembly 10. Based on this, the top cover 18 partially covers the pressing member 16 so that a portion of the pressing member 16 is exposed to the outside, so that the pressing member 16 can be pressed through the exposed portion.

[0041] The following will be combined with the attached Figure 2-4 The structure of the pump core assembly 14 is described. The pump core assembly 14 includes a pump core 142 disposed at the bottom of the base 12, a reciprocating member 144 that forms a variable-volume sealed cavity with the pump core 142, a one-way valve 146 for opening and closing the liquid outlet on the reciprocating member 144, and a spring 148 disposed between the base 12 and the reciprocating member 144. The spring 148 can provide a reset force for the reciprocating member 144, so that the reciprocating member 144 is reset from a compressed state of the spring 148 to a stretched state of the spring 148. The pump core 142 can open or close the liquid inlet formed at the bottom of the base 12 and connected to the container storing the liquid to be dispensed by moving relative to the base 12, so that the liquid inlet is in an open state when the effective volume of the sealed cavity increases to inhale the liquid, and the liquid inlet is in a closed state when the effective volume of the sealed cavity decreases to discharge the liquid. Similarly, when the effective volume of the sealed cavity increases to absorb liquid, the one-way valve 146 closes the liquid outlet on the base 12, and when the effective volume of the sealed cavity decreases to discharge liquid, the one-way valve 146 opens the liquid outlet on the base 12 to allow the liquid to be discharged therefrom.

[0042] The following is combined with Figure 5 and 6The structure of the pressing component 16 of the pumping assembly 10 for a liquid dispensing device according to the present invention is described. The pressing component 16 includes a pressing body 162 with arc-shaped sides, a pressing tail 164 extending from the pressing body 162 to the outer edge of the base 12, a liquid discharge channel 166 provided on a side of the pressing body 162 opposite to the pressing tail 164, and a discharge nozzle 168 provided at the end of the liquid discharge channel 166. The pressing body 162 and the pressing tail 164 with arcs on both sides are combined to form the pressing part of the pressing component 16. The overall width of the pressing body 162 of the pressing part is greater than the width of the pressing tail 164, which just meets the shape change when the thumb is pressed. That is, when the pressing body 162 is pressed by the fingertip of the thumb, the fingertip of the thumb is deformed, and the contact area between the thumb and the pressing body 162 increases. Since the pressing body 162 has a wider width than the pressing tail 164, it is more comfortable for the thumb to press, and will not be squeezed or rubbed by the top cover 18. In order to enable the liquid sucked through the one-way valve 146 to be smoothly discharged to the outside of the pumping assembly 10, a liquid discharge channel 166 for the liquid to pass is formed in the pressing component 16. The liquid discharge channel 166 and the pressing tail 164 are arranged relative to the pressing body 162, so that the user can hold the pumping assembly 10 in a better posture. Furthermore, a discharge nozzle 168 is provided at the end of the liquid discharge channel 166 to allow the liquid to be discharged smoothly.

[0043] Advantageously, the width of the liquid discharge channel 166 of the pressing component 16 of the pumping assembly 10 in the lateral direction is smaller than the width of the pressing body 162, and the liquid discharge channel 166 is lower than the pressing body 162 in the longitudinal direction. In this article, the lateral direction refers to the direction perpendicular to the direction of liquid spraying in the plane of the pressing body 162. The purpose of this arrangement is that, firstly, the liquid discharge channel 166 does not need to have a particularly large cross-sectional area, so the liquid discharge channel 166 does not need to have a large shell, and it can have a smaller lateral cross-section. Secondly, since the pressing component 16 needs to cooperate with the top cover 18 to form a flat top surface, the pressing component 16 needs to have a certain relative displacement space with the top cover 18, so that the liquid discharge channel 166 is lower than the pressing body 162 in the longitudinal direction, which provides corresponding space for the displacement of the pressing component 16. Again, since the liquid discharge channel 166 has a smaller cross-section in the lateral direction relative to the pressing body 162, when the top cover 18 is covered on the pressing component 16, there is a smaller sliding gap between the pressing component 16 and the top cover 18. Because the sliding gap may be in contact with the operating finger, the small sliding gap can ensure that the finger cannot enter, thereby avoiding squeezing damage to the finger.

[0044] The following is the attached Figure 7 and 8 The top cover 18 of the pumping assembly 10 for the liquid dispensing device according to the present invention is described. Here, the top cover 18 cooperates with the pressing member 16 and the base 12 to form the planar top surface of the pumping assembly 10. The top cover 18 includes a first side wall 182 arranged on the first side of the pressing body 162 of the pressing member 16, a second side wall 184 arranged on the second side of the pressing body 162 of the pressing member 16, an end wall 186 arranged above the liquid discharge channel 166, and a top wall 188 connecting and covering the first side wall 182, the second side wall 184 and the end wall 186. The inner shapes of the first side wall 182 and the second side wall 184 are respectively matched with the outer shapes of the pressing body 162 and the pressing tail 164 of the pressing member 16, and the end wall 186 connects the first side wall 182 and the second side wall 184 into one body, so that the pressing member 16 and the top cover 18 together form the substantially planar upper surface of the pumping assembly 10.

[0045] Further, the first side wall 182 of the top cover 18 of the pumping assembly 10 includes a first inner side wall 1822 that cooperates with the pressing body 162 of the pressing component 16 and is disposed on the outside of the pressing body 162, and a first outer side wall 1824 that cooperates with the arcuate side wall 122 of the base 12 and is disposed on the outside of the arcuate side wall 122. The cooperation described herein mainly refers to the fitting relationship of the shapes of the two, for example, the first inner side wall 1822 cooperates with the pressing body 162, from the attached Figure 5 From the perspective of the above, the shapes of the two are basically the same, so that the two fit closely together. The first outer side wall 1824 and the arcuate side wall 122 of the base 12 have the same matching relationship. Here, since the arcuate side wall 122 of the base 12 is arranged inside the first inner side wall 1822 of the first side wall 182 of the top cover 18, and the top cover 18 has a relatively strong overall structure, the arcuate side wall 122 of the base 12 at the top is protected and fixed by the top cover 18, so that the base 12 also has a strong structure and is less likely to be deformed or broken.

[0046] In order to further enhance the bonding strength between the top cover 18 and the base 12, a first fixing portion 1826 that matches the arc-shaped side wall 122 of the base 12 is provided on the first outer side wall 1824 of the first side wall 182 of the top cover 18. The first fixing portion 1826 can cooperate with the corresponding matching fixing portion on the arc-shaped side wall 122 of the base 12 to achieve a relatively stable connection between the top cover 18 and the base 12. Further, the first fixing portion 1826 can be a recessed portion provided in the first outer side wall 1824. Figure 7In the embodiment shown, it is a rectangular through hole. Accordingly, a convex portion, such as a bump, can be provided on the arc-shaped side wall 122 of the base 12 to match with the above-mentioned concave portion to achieve a clamping connection between the two. Of course, a convex portion can also be provided on the inner side of the first outer side wall 1824 of the top cover 18, and correspondingly, a concave portion can be provided on the outer side of the arc-shaped side wall 122 of the base 12 to achieve concave-convex matching between the two. Of course, other commonly used clamping structures in the art can also be used.

[0047] Further, in order to ensure that the pumping assembly 10 for the liquid dispensing device according to the present invention has a good fixed relationship with the external shell, a clamping structure 1828 is provided on the first outer side wall 1824 of the first side wall 182 of the top cover 18, and the clamping structure 1828 can realize the fixed connection between the pumping assembly 10 and the shell with the corresponding matching clamping structure provided on the inner wall of the shell. Specifically, the clamping structure 1828 is a protrusion provided on the first outer side wall 1824. Of course, as described above, the clamping structure 1828 can also be a recessed portion provided on the first outer side wall 1824, as long as the clamping structures on the two components combined with each other match each other.

[0048] Similarly, the second side wall 184 of the top cover 18 of the pumping assembly 10 for the liquid dispensing device according to the present invention has the same structure as the first side wall 182, which may include a second inner side wall 1842 that cooperates with the pressing body 162 of the pressing component 16 and is disposed on the outer side of the pressing body 162, and a second outer side wall 1844 that cooperates with the arcuate side wall 122 of the base 12 and is disposed on the outer side of the arcuate side wall 122. Here, the second inner side wall 1842 and the second outer side wall 1844 have the same structure as the first inner side wall 1822 and the first outer side wall 1824, respectively, and will not be repeated here.

[0049] Further, the end wall 186 of the top cover 18 includes an inner end wall 1862 matched with the end surface of the pressing body 162 of the pressing component 16 and an outer end wall 1864 matched with the discharge nozzle 168, and a recess 1866 for accommodating the liquid discharge channel 166 is formed on the inner end wall 1862 and the outer end wall 1864. In a non-use state, the shape of the recess 1866 is completely matched with the outer shape of the liquid discharge channel 166, so that the liquid discharge channel 166 is completely accommodated therein, and at this time, the upper surface of the top cover 18 and the upper surface of the pressing component 16 are maintained at the same horizontal plane, so that the pumping assembly 10 has a planar upper surface. When the pressing component 16 is pressed down, the pressing component 16 moves downward relative to the top cover 18. At this time, viewed from the surface of the pumping assembly 10, the pressing body 162 and the pressing tail 164 of the pressing component 16 move downward, forming a step with the top cover 18 on the side of the pressing body 162 away from the pressing tail 164, and the side of the step exposes a part of the recess 1866. Here, since the recess 1866 is designed to be relatively small, the finger will not enter the interior of the recess 1866, thereby preventing unintentional squeezing or damage to the finger, thereby protecting the operator's safety.

[0050] The present invention also provides a liquid dispensing device 100, such as Fig. 9 As shown, the liquid dispensing device 100 includes a storage container 101 for storing liquid to be dispensed, a sliding sealing component 102 arranged in the storage container 101, a pumping component arranged at the opening of the storage container 101, and a shell 103 arranged outside the storage container 101 and the pumping component, wherein the pumping component is any one of the pumping components 10 described above.

[0051] During the assembly process of the liquid dispensing device 100 according to the present invention, the sliding sealing component 102 can be first installed into the storage container 101, and then the liquid contained can be injected into the storage container 101. Next, the assembled pumping assembly 10 according to the present invention is installed on the upper part of the storage container 101. Here, a sealing installation structure, such as a sealing groove, can be provided on the inner wall of the upper part of the storage container 101. At the same time, a corresponding matching sealing installation mechanism, such as a sealing flange, is provided on the outer peripheral wall of the lower part of the base 12 of the pumping assembly 10. In the process of installing the pumping assembly 10 on the storage container 101, the groove and the flange are matched with each other, so as to achieve a sealed connection between the two. Finally, the housing 103 is placed outside the storage container 101 and the housing 103 is sealedly joined with the pumping assembly 10. The pumping assembly 10 is firmly connected with the housing 103 through the clamping structure 1828 provided on the outer side wall of the top cover 18 of the pumping assembly 10 and the corresponding matching clamping structure provided on the inner wall of the housing 103. The liquid dispensing device 100 according to the present invention can achieve the vacuumization of the internal effective container by means of the sliding sealing component 102 arranged in the storage container 101, that is, the sliding sealing component 102 will gradually move as the liquid is discharged, that is, when the liquid is discharged, the volume of the storage container 101 continues to decrease, and correspondingly, the pressure in the storage container 101 decreases, and the sliding sealing component 102 moves in the direction of reducing the effective volume of the storage container 101 under the action of the negative pressure in the storage container 101, thereby preventing air from entering the storage container 101, which is also beneficial to the vacuum preservation of the stored liquid and prolongs the shelf life of the liquid.

[0052] The present invention proposes a pressing component and a top cover with an exquisite design and a pumping assembly for a liquid dispensing device using such a pressing component and a top cover, which not only makes the pumping assembly have a perfect appearance structure and improves the visual effect of the appearance, but also enables the pumping assembly according to the present invention to provide safety protection for the operator and avoid the risk of the operator's fingers being pinched by relatively moving parts. In addition, the pumping assembly according to the present invention has a pressing component with arc-shaped designs on both sides and a top cover with a corresponding matching shape, so that the top cover and the pressing component themselves have a relatively solid structure, and the top of the base is also protected by the top cover through the combination of the top cover and the top of the base, so that the top of the base is not easy to be deformed, so that the upper part of the pumping assembly according to the present invention has a more solid structure, so that its operation is smoother, and the pressing component will not be stuck, thereby greatly extending the service life of the pumping assembly.

[0053] Regarding the embodiments of the present invention, it should also be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0054] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A pumping assembly for a liquid dispensing device, It is characterized in that include: Pedestal; a pump core assembly, the pump core assembly being arranged in the base and forming a sealed cavity with a variable volume with the base, wherein the pump core assembly comprises a pump core arranged at the bottom of the base, the pump core being capable of opening or closing a liquid inlet formed at the bottom of the base and communicating with a container storing liquid to be dispensed by moving relative to the base, so that when the effective volume of the sealed cavity increases to inhale liquid, the liquid inlet is in an open state, and when the effective volume of the sealed cavity decreases to discharge liquid, the liquid inlet is in a closed state; a pressing component, the pressing component being disposed on the pump core assembly and used for pressing the pump core assembly to change the volume of the sealed cavity of the pump core assembly; and A top cover is provided on an upper portion of the base and partially covers the pressing member so that a portion of the pressing member is exposed to the outside.

2. The pumping assembly for a liquid dispensing device according to claim 1, It is characterized in that The pressing component includes a pressing body with arc-shaped two sides, a pressing tail extending from the pressing body to the outer edge of the base, a liquid discharge channel arranged on a side of the pressing body opposite to the pressing tail, and a discharge nozzle arranged at the end of the liquid discharge channel.

3. The pumping assembly for a liquid dispensing device according to claim 2, It is characterized in that The width of the liquid discharge channel in the lateral direction is smaller than the width of the pressing body portion, and the liquid discharge channel is lower than the pressing body portion in the longitudinal direction.

4. The pumping assembly for a liquid dispensing device according to claim 3, It is characterized in that The top cover includes a first side wall arranged on a first side of a pressing body portion of the pressing component, a second side wall arranged on a second side of the pressing body portion of the pressing component, an end wall arranged above the liquid discharge channel, and a top wall connecting and covering the first side wall, the second side wall and the end wall.

5. The pumping assembly for a liquid dispensing device according to claim 4, It is characterized in that The first side wall includes a first inner side wall matched with the pressing body of the pressing component and disposed on the outer side of the pressing body, and a first outer side wall matched with the arcuate side wall of the base and disposed on the outer side of the arcuate side wall.

6. The pumping assembly for a liquid dispensing device according to claim 5, It is characterized in that A first fixing portion matched with the arc-shaped side wall of the base is arranged on the first outer side wall.

7. The pumping assembly for a liquid dispensing device according to claim 6, It is characterized in that The first fixing portion is a recessed portion provided in the first outer side wall.

8. The pumping assembly for a liquid dispensing device according to claim 5, It is characterized in that A fixing structure is arranged on the first outer side wall.

9. The pumping assembly for a liquid dispensing device according to claim 8, It is characterized in that The fixing structure is a protrusion arranged on the first outer side wall.

10. The pumping assembly for a liquid dispensing device according to claim 4, It is characterized in that The second side wall includes a second inner side wall matched with the pressing body of the pressing component and disposed on the outer side of the pressing body, and a second outer side wall matched with the arcuate side wall of the base and disposed on the outer side of the arcuate side wall.

11. The pumping assembly for a liquid dispensing device according to claim 4, It is characterized in that The end wall comprises an inner end wall matched with the pressing component and an outer end wall matched with the discharge nozzle, and recesses for accommodating the liquid discharge channel are formed on the inner end wall and the outer end wall.

12. A liquid dispensing device, comprising a storage container for storing a liquid to be dispensed, a sliding sealing component disposed in the storage container, a pumping assembly disposed at an opening of the storage container, and a housing disposed outside the storage container and the pumping assembly, It is characterized in that The pumping assembly is a pumping assembly according to any one of claims 1-11.

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