Suction-back emulsion pump and emulsion bottle

Abstract

The invention discloses a back-suction lotion pump and a lotion bottle, the back-suction lotion pump comprises a head cap, a pump body, a valve body, a driving assembly, a piston and an elastic reset pipe, the valve body is used for selectively opening and closing a bottom channel of the pump body, the head cap is mounted on the top of the driving assembly, and the piston is mounted on the head cap. The piston is arranged at the bottom of the driving assembly in a drivable and sleeved mode and installed in a pump cavity of the pump body in an up-down moving mode, the piston is arranged to be used for selectively allowing and preventing a liquid taking channel of the driving assembly from being communicated with the pump cavity of the pump body, and the elastic reset pipe is arranged at the top of the driving assembly in a sleeved mode. The bottom of the elastic reset pipe is kept still relative to the pump body, the top of the elastic reset pipe abuts against the head cap in a sealed mode, and the inner wall of the elastic reset pipe is attached to the driving assembly in a sealed mode so that a space-variable back suction cavity can be formed between the elastic reset pipe and the driving assembly. The liquid taking channel of the driving assembly and the head cap channel of the head cap are respectively communicated with the back suction cavity.

Description

Technical Field

[0001] The invention relates to a lotion pump, in particular to a suction lotion pump and a lotion bottle. Background Art

[0002] The press pump is a device for pumping the fluid contained in the bottle. After the action of pumping the fluid is completed, the fluid remaining in the head cap channel of the press pump needs to be sucked back to prevent this part of the fluid from dripping automatically.

[0003] For example, a Chinese utility model patent with authorization announcement number CN217625105U discloses a back-suction pressing pump device. When in use, the back-suction pressing pump device is installed on the bottle body. When the pressing piece is pressed for the first time, the pressing piece drives the main column and the auxiliary column to move downward and compresses the elastic piece to squeeze the main body. The space in the main body gradually shrinks and the pressure is gradually increased. When the pressing piece is released, a short negative pressure is instantly formed in the space in the main body. After the pressing piece is released, the pressing piece, the main column and the auxiliary column are quickly moved upward and reset under the drive of the resetting action of the elastic piece. At this time, due to the instantaneous negative pressure in the main body, the back-suction column will be driven to move upward to separate from the second limiting piece and realize the entry of the contents in the bottle into the main body until the pressure in the main body is equal to the external pressure and reaches a balance. When liquid needs to be discharged, the pressing piece is pressed again, and the pressing piece drives the main column and the auxiliary column to move downward and compress the elastic piece to squeeze the main body. The space in the main body gradually shrinks and the pressure is gradually increased. When the body is in a pressurized state, the contents in the body will squeeze the back-suction column to completely fall back and reset and block the second opening. When the pressing piece is continuously pressed, the inner wall of the first yield groove separates from the end of the main column (the outer wall of the movable part is subjected to the friction of the inner wall of the body) to open the flow gap. The pressure difference in the space within the body will squeeze the contents in the body out of the flow gap and flow out through the auxiliary column flow channel and the liquid outlet flow channel to achieve liquid discharge. After the liquid discharge is completed, some contents still remain in the pressing piece. At this time, the pressing piece is released, and the pressing piece, the main column and the auxiliary column are quickly moved up and reset under the driving force of the resetting action of the elastic piece. At this time, due to the instantaneous negative pressure in the body, the back-suction column will be driven to gradually move upward to separate from the second opening and realize the entry of the contents in the bottle into the body, and the negative pressure in the body will drive the residual contents in the auxiliary column flow channel and the liquid outlet flow channel to flow back into the body until the pressure in the body is equal to the external pressure and reaches equilibrium. In the prior art back-suction pressing pump device, a special back-suction column needs to be configured, resulting in the prior art back-suction pressing pump device having more parts, higher cost and complex structure.

[0004] A Chinese utility model patent with authorization announcement number CN209701290U discloses a pressing pump with a back-suction function, and its working principle is as follows: in the initial state, the pump core is filled with liquid. When the consumer presses the elastic body downward, the air or liquid in the reflux chamber is compressed and enters the liquid guide tube through the reflux hole. When the elastic body contacts the top of the pressing body, the pressing head moves vertically downward relative to the connecting body, the liquid guide tube moves vertically downward, the volume of the pump core is reduced, the spring is compressed, the liquid outlet is opened, and the liquid inlet is closed. The liquid in the pump core is pumped out through the liquid guide tube and the liquid outlet tube through the nozzle port. When the consumer stops pressing the elastic body, the compressed spring stretches and rebounds, the liquid guide tube moves vertically upward, the liquid outlet is opened, and the liquid inlet is closed. Negative pressure is formed inside the pump core, and liquid is sucked from its bottom end. At the same time, the elastic body gradually resets upward, and negative pressure is also formed in the reflux chamber. The liquid remaining at the nozzle port is sucked back through the liquid outlet tube and the liquid guide tube in turn. The pressing pump of the prior art requires the pressing head to provide an elastic body, and the user needs to press the elastic body, and can further press the pressing body after the elastic body is deformed. This method not only has the problems of more parts, higher cost and complex structure, but also affects the user's pressing feel. Summary of the invention

[0005] One object of the present invention is to provide a back-suction lotion pump and a lotion bottle, wherein a back-suction chamber is formed between the elastic reset tube and the driving assembly of the back-suction lotion pump, when the head cap is pressed and the driving assembly is driven by the head cap to move downward, the elastic reset tube is deformed to reduce the space of the back-suction chamber, and after the head cap is released, the elastic reset tube pushes the head cap and the driving assembly to move upward in the process of restoring the initial state to increase the space of the back-suction chamber, at which time the lotion remaining in the head cap channel of the head cap is sucked back into the back-suction chamber to avoid dripping.

[0006] One object of the present invention is to provide a re-absorption lotion pump and a lotion bottle, wherein when the head cap is pressed and the driving assembly is driven by the head cap to move downward, the auxiliary elastic part of the re-absorption lotion pump is deformed and accumulates elastic potential energy, and after the head cap is released, the auxiliary elastic part provides an auxiliary restoring force in the process of restoring the initial state, which is used to assist the elastic reset tube in pushing the head cap and the driving assembly to move upward, thereby allowing the re-absorption lotion pump to pump viscous lotions and other fluids.

[0007] According to one aspect of the present invention, the present invention provides a re-suction lotion pump, comprising: a head cap, wherein the head cap has a head cap channel; A pump body, wherein the pump body has a pump cavity and a bottom channel connected to the pump cavity; a valve body, wherein the valve body is configured to selectively open and close the bottom passage of the pump body; A driving assembly, wherein the driving assembly has a liquid extraction channel, and the head cap is installed on the top of the driving assembly; A piston, wherein the piston is drivably mounted on the bottom of the driving assembly and is movably mounted on the pump chamber of the pump body, and the piston is configured to selectively allow and prevent the liquid extraction channel of the driving assembly from communicating with the pump chamber of the pump body; and An elastic reset tube, wherein the elastic reset tube is sleeved on the top of the driving assembly, the bottom of the elastic reset tube remains stationary relative to the pump body, and the top is sealed against the head cap, wherein the inner wall of the elastic reset tube is sealedly fitted to the driving assembly to form a space-variable back-suction chamber between the elastic reset tube and the driving assembly, and the liquid extraction channel of the driving assembly and the head cap channel of the head cap are respectively connected to the back-suction chamber.

[0008] According to one embodiment of the present invention, the driving assembly includes a piston seat and a driving rod, the piston seat includes a seat body and an assembly rod extending upward from the seat body, the assembly rod has a first rod body channel, the driving rod includes a connecting rod and a driving arm extending outward from the bottom of the connecting rod, the connecting rod has a second rod body channel, the piston has a piston through hole, the inner diameter of the piston is smaller than the outer diameter of the seat body and the outer diameter of the driving arm, the inner diameter of the piston is greater than or equal to the outer diameter of the bottom of the assembly rod, the top of the assembly rod is fixedly assembled to the connecting rod after passing through the piston through hole of the piston, the distance between the seat body and the driving arm is greater than the height of the piston, so that the piston can be drivably mounted on the bottom of the driving assembly, the first rod body channel of the assembly rod and the second rod body channel of the connecting rod are connected to form the liquid extraction channel of the driving assembly.

[0009] According to an embodiment of the present invention, the bottom of the elastic reset tube is sealingly attached to the peripheral wall of the connecting rod of the driving rod.

[0010] According to one embodiment of the present invention, the aspiration lotion pump comprises a pump plug, the pump plug having a pump plug through hole, the inner diameter of the pump plug being larger than the outer diameter of the connecting rod of the driving rod and smaller than the outer diameter of the driving arm, wherein the pump plug is fixedly mounted in the pump cavity of the pump body, the top of the connecting rod passes through the pump plug through hole of the pump plug, wherein the bottom of the elastic reset tube abuts against the pump plug to keep the bottom of the elastic reset tube stationary relative to the pump body.

[0011] According to one embodiment of the present invention, the elastic reset tube includes a first ring body, a second ring body, a third ring body, a first bellows, a second bellows and a fitting ring, wherein the first ring body, the second ring body and the third ring body are arranged at intervals from each other along the height direction, the first bellows extends downward from the inner side of the second ring body to the first ring body, the second bellows extends upward from the inner side of the second ring body to the third ring body, the fitting ring extends downward from the inner side of the second ring body, and there is a gap between the fitting ring and the first bellows, wherein the first ring body abuts against the pump plug, the third ring body abuts against the head cap, and the fitting ring fits against the peripheral wall of the connecting rod in a manner of being constrained to the connecting rod.

[0012] According to one embodiment of the present invention, the height dimension of the first bellows is smaller than the height dimension of the second bellows.

[0013] According to an embodiment of the present invention, the aspiration lotion pump comprises an auxiliary elastic member, the bottom of the auxiliary elastic member remains unchanged relative to the pump body, and the top of the auxiliary elastic member abuts against the head cap.

[0014] According to an embodiment of the present invention, the re-absorption lotion pump comprises an auxiliary elastic member, the bottom of the auxiliary elastic member abuts against the first ring body, and the top of the auxiliary elastic member abuts against the second ring body.

[0015] According to an embodiment of the present invention, the aspiration lotion pump comprises a cover, and the cover is snap-fittedly mounted on the top of the pump body.

[0016] According to another aspect of the present invention, the present invention further provides a lotion bottle, which comprises a bottle body and a back-sucking lotion pump, wherein the back-sucking lotion pump is installed on the bottle body, wherein the back-sucking lotion pump further comprises: a head cap, wherein the head cap has a head cap channel; A pump body, wherein the pump body has a pump cavity and a bottom channel connected to the pump cavity; a valve body, wherein the valve body is configured to selectively open and close the bottom passage of the pump body; A driving assembly, wherein the driving assembly has a liquid extraction channel, and the head cap is installed on the top of the driving assembly; A piston, wherein the piston is drivably mounted on the bottom of the driving assembly and is movably mounted on the pump chamber of the pump body, and the piston is configured to selectively allow and prevent the liquid extraction channel of the driving assembly from communicating with the pump chamber of the pump body; and An elastic reset tube, wherein the elastic reset tube is sleeved on the top of the driving assembly, the bottom of the elastic reset tube remains stationary relative to the pump body, and the top is sealed against the head cap, wherein the inner wall of the elastic reset tube is sealedly fitted to the driving assembly to form a space-variable back-suction chamber between the elastic reset tube and the driving assembly, and the liquid extraction channel of the driving assembly and the head cap channel of the head cap are respectively connected to the back-suction chamber.

[0017] According to another aspect of the present invention, the present invention further provides an elastic reset tube, which includes a first ring body, a second ring body, a third ring body, a first bellows, a second bellows and a fitting ring, wherein the first ring body, the second ring body and the third ring body are arranged at intervals from each other along the height direction, the first bellows extends downward from the inner side of the second ring body to the first ring body, the second bellows extends upward from the inner side of the second ring body to the third ring body, the fitting ring extends downward from the inner side of the second ring body, and there is a gap between the fitting ring and the first bellows.

[0018] According to one embodiment of the present invention, the height dimension of the first bellows is smaller than the height dimension of the second bellows.

[0019] According to an embodiment of the present invention, the elastic reset tube is blow-molded from PE material by a blow molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of a lotion bottle according to a preferred embodiment of the present invention.

[0021] Figure 2 It is a three-dimensional schematic diagram of a re-suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0022] Figure 3 It is a cross-sectional schematic diagram of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0023] Figure 4 yes Figure 3 A magnified view of the local location.

[0024] Figure 5 It is a schematic exploded view from one perspective of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0025] Figure 6 It is a schematic exploded view from another perspective of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0026] Figure 7It is a three-dimensional schematic diagram from one perspective of an elastic reset tube of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0027] Figure 8 It is a schematic exploded view from another perspective of the elastic reset tube of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0028] Fig. 9 It is a cross-sectional schematic diagram of the elastic reset tube of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0029] Fig.10 It is a cross-sectional schematic diagram of one of the working processes of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0030] Fig.11 It is a cross-sectional schematic diagram of the second working process of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0031] Fig.12 It is a cross-sectional schematic diagram of the third working process of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0032] Fig.13 It is a cross-sectional schematic diagram of the fourth working process of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0033] Fig.14 It is a cross-sectional schematic diagram of the fifth working process of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention.

[0034] Fig.15 It is a cross-sectional schematic diagram of a modified example of the suction lotion pump of the lotion bottle according to the above preferred embodiment of the present invention. DETAILED DESCRIPTION

[0035] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The present invention can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0036] Furthermore, on the first aspect, in the disclosure of the present invention, the orientations or positional relationships indicated by terms such as “longitudinal”, “transverse”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term “one” should be understood as “at least one” or “one or more”, that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term “one” cannot be understood as a limitation on the quantity.

[0037] With reference to the accompanying drawings of the present invention Figures 1 to 14 A lotion bottle according to a preferred embodiment of the present invention will be disclosed and explained in the following description, wherein the lotion bottle includes a bottle body 10 and a suction lotion pump 20, the bottle body 10 is used to contain fluids such as lotion, and the suction lotion pump 20 is used to pump out the fluids such as lotion contained in the bottle body 10.

[0038] Specifically, the aspiration lotion pump 20 includes a pump body 21 , a valve body 22 , a driving assembly 23 , a piston 24 , a head cap 25 and an elastic reset tube 26 , and the aspiration lotion pump 20 has a variable space aspiration chamber 200 .

[0039] More specifically, the pump body 21 has a pump chamber 211 and a bottom channel 212 connected to the pump chamber 211. The valve body 22 is configured to selectively open and close the bottom channel 212 of the pump body 21, wherein when the valve body 22 opens the bottom channel 212 of the pump body 21, the fluid such as lotion contained in the bottle body 10 is allowed to enter the pump chamber 211 through the bottom channel 212 of the pump body 21, and when the valve body 22 closes the bottom channel 212 of the pump body 21, the fluid such as lotion contained in the bottle body 10 is prevented from entering the pump chamber 211 through the bottom channel 212 of the pump body 21.

[0040] In the attached Figures 1 to 14 In the specific example of the lotion pump of the present invention shown, the valve body 22 is a ball valve, and the valve body 22 is movably arranged at the bottom of the pump chamber 211 of the pump body 21. When the valve body 22 moves upward to form a gap between the outer wall of the valve body 22 and the inner wall of the pump body 21, the valve body 22 opens the bottom channel 212 of the pump body 21 to allow the lotion or other fluid contained in the bottle 10 to enter the pump chamber 211 through the bottom channel 212 of the pump body 21. When the valve body 22 moves downward to form a fit between the outer wall of the valve body 22 and the inner wall of the pump body 21, the valve body 22 closes the bottom channel 212 of the pump body 21 to prevent the lotion or other fluid contained in the bottle 10 from entering the pump chamber 211 through the bottom channel 212 of the pump body 21.

[0041] Optionally, in other examples of the lotion pump of the present invention, the valve body 22 may be a valve sheet, which is deformably disposed at the bottom of the pump chamber 211 of the pump body 21; when the valve body 22 is deformed upward, the valve body 22 opens the bottom channel 212 of the pump body 21 to allow the lotion or other fluid contained in the bottle 10 to enter the pump chamber 211 through the bottom channel 212 of the pump body 21; when the valve body 22 is deformed downward, the valve body 22 closes the bottom channel 212 of the pump body 21 to prevent the lotion or other fluid contained in the bottle 10 from entering the pump chamber 211 through the bottom channel 212 of the pump body 21.

[0042] The driving assembly 23 has a liquid extraction channel 231, the piston 24 is drivably mounted on the bottom of the driving assembly 23 and is movably mounted on the pump chamber 211 of the pump body 21, and the piston 24 is configured to selectively allow and prevent the liquid extraction channel 231 of the driving assembly 23 from communicating with the pump chamber 211 of the pump body 21. It can be understood that the peripheral wall of the piston 24 is in contact with the inner wall of the pump body 21. When the driving component 23 moves downward relative to the piston 24, the piston 24 allows the liquid intake channel 231 of the driving component 23 to communicate with the pump chamber 211 of the pump body 21, and in the process of the driving component 23 driving the piston 24 to move downward in the pump chamber 211 of the pump body 21, the piston 24 always allows the liquid intake channel 231 of the driving component 23 to communicate with the pump chamber 211 of the pump body 21. When the driving component 23 moves upward relative to the piston 24, the piston 24 prevents the liquid intake channel 231 of the driving component 23 from being communicated with the pump chamber 211 of the pump body 21, and in the process of the driving component 23 driving the piston 24 to move upward in the pump chamber 211 of the pump body 21, the piston 24 always prevents the liquid intake channel 231 of the driving component 23 from being communicated with the pump chamber 211 of the pump body 21.

[0043] The head cap 25 has a head cap channel 251. The head cap 25 is installed on the top of the drive assembly 23, so that the head cap 25 and the drive assembly 23 are combined into a whole. The user can press the head cap 25 to move the drive assembly 23 downward relative to the pump body 21. During the downward movement of the head cap 25 and the drive assembly 23 relative to the pump body 21, the drive assembly 23 drives the piston 24 to move downward in the pump chamber 211 of the pump body 21.

[0044] The elastic reset tube 26 is a tube body, which has only an upper opening 2601 and a lower opening 2602. The elastic reset tube 26 is mounted on the top of the driving assembly 23. The bottom of the elastic reset tube 26 remains stationary relative to the pump body 21. The top of the elastic reset tube 26 is sealingly abutted against the head cap 25, that is, the upper opening 2601 of the elastic reset tube 26 is closed by the head cap 25, and the inner wall of the elastic reset tube 26 is sealingly fitted to the driving assembly 23. In this way, the back-suction lotion pump 20 forms the back-suction chamber 200 between the elastic reset tube 26 and the driving assembly 23, and the liquid extraction channel 231 of the driving assembly 23 and the head cap channel 251 of the head cap 25 are respectively connected to the back-suction chamber 200 of the back-suction lotion pump 20. That is to say, when the piston 24 allows the liquid intake channel 231 of the drive assembly 23 to communicate with the pump chamber 211 of the pump body 21, the pump chamber 211 of the pump body 21, the liquid intake channel 231 of the drive assembly 23, the suction chamber 200 of the suction lotion pump 20 and the head cap channel 251 of the head cap 25 are connected in sequence to allow the lotion and other fluids in the pump chamber 211 of the pump body 21 to be discharged.

[0045] Reference Figures 10 to 14In the first stage when the user presses the head cap 25, the head cap 25 and the drive assembly 23 move downward relative to the pump body 21 and the piston 24. At this time, the piston 24 switches from a state of preventing the liquid intake channel 231 of the drive assembly 23 from communicating with the pump chamber 211 of the pump body 21 to a state of allowing the liquid intake channel 231 of the drive assembly 23 to communicate with the pump chamber 211 of the pump body 21. The elastic reset tube 26 is compressed and deformed in the height direction to accumulate elastic potential energy. In the second stage when the user presses the head cap 25, the head cap 25 and the drive assembly 23 move further downward relative to the pump body 21. During this process, the drive assembly 23 drives the piston 24 to move downward in the pump chamber 211 of the pump body 21, and the elastic reset tube 26 is further compressed in the height direction to continue to accumulate elastic potential energy. The space of the suction chamber 200 of the suction lotion pump 20 becomes smaller. At the same time, since the valve body 22 is maintained in a state of closing the bottom channel 212 of the pump body 21, the lotion and other fluids in the pump chamber 211 of the pump body 21 are allowed to be discharged through the liquid extraction channel 231 of the drive assembly 23, the suction chamber 200 of the suction lotion pump 20 and the head cap channel 251 of the head cap 25. In the first stage when the user releases the head cap 25, the elastic reset tube 26 pushes the head cap 25 and the drive assembly 23 to move upward relative to the pump body 21 and the piston 24 during the process of restoring the initial state. At this time, the piston 24 switches from allowing the liquid intake channel 231 of the drive assembly 23 to communicate with the pump chamber 211 of the pump body 21 to preventing the liquid intake channel 231 of the drive assembly 23 from communicating with the pump chamber 211 of the pump body 21. In the second stage when the user releases the head cap 25, the elastic reset tube 26 further pushes the head cap 25 and the drive assembly 23 to move upward relative to the pump body 21 during the process of restoring the initial state. In this process, the drive assembly 23 drives the piston 24 to move upward in the pump chamber 211 of the pump body 21, and the space of the suction chamber 200 of the suction lotion pump 20 becomes larger to form a negative pressure environment, so as to suck back the lotion and other fluids remaining in the head cap channel 251 of the head cap 25 to avoid dripping. At the same time, since the pump chamber 211 of the pump body 21 forms a negative pressure environment, the valve body 22 opens the bottom channel 212 of the pump body 21, allowing the lotion and other fluids contained in the bottle body 10 to enter the pump chamber 211 through the bottom channel 212 of the pump body 21. After the pressure in the pump chamber 211 of the pump body 21 and the pressure in the bottle body 10 are restored to balance, the valve body 22 closes the bottom channel 212 of the pump body 21 again.

[0046] That is to say, in the lotion bottle of the present invention, the elastic reset tube 26 can not only provide a restoring force for pushing the driving assembly 23, the piston 24 and the head cap 25 to reset, but also the re-suction chamber 200 of the re-suction lotion pump 20 can be formed between the elastic reset tube 26 and the driving assembly 23, which is used to form a negative pressure environment during the resetting of the driving assembly 23, the piston 24 and the head cap 25, so as to re-suction the lotion or other fluids remaining in the head cap channel 251 of the head cap 25, so that After the driving assembly 23, the piston 24 and the head cap 25 are reset, no fluid such as lotion remains in the head cap channel 251 of the head cap 25, thereby preventing the lotion or other fluid from dripping from the lotion bottle. Compared with the lotion pump with a back-suction function in the prior art, the back-suction lotion pump 20 of the lotion bottle of the present invention does not need to be configured with special components. Therefore, the back-suction lotion pump 20 of the lotion bottle of the present invention has a simpler structure and lower cost, and will not affect the user's feel when pressing the back-suction lotion pump 20.

[0047] Continue to refer to the attached Figures 3 to 6The driving assembly 23 includes a piston seat 232 and a driving rod 233. The piston seat 232 includes a seat body 2321 and an assembly rod 2322, and the assembly rod 2322 extends upward from the seat body 2321. For example, in a specific example of the lotion bottle of the present invention, the assembly rod 2322 can extend upward from the middle of the seat body 2321 in an integrated manner, that is, the seat body 2321 and the assembly rod 2322 can be an integrated structure, and the central axis of the seat body 2321 coincides with the central axis of the assembly rod 2322, wherein the assembly rod 2322 has a first rod body channel 23221. The driving rod 233 includes a connecting rod 2331 and a driving arm 2332, wherein the driving arm 2332 extends outward from the bottom of the connecting rod 2331. For example, in a specific example of the lotion bottle of the present invention, the driving arm 2332 can extend outward from the bottom of the connecting rod 2331 as a whole, that is, the connecting rod 2331 and the driving arm 2332 can be an integrated structure, wherein the connecting rod 2331 has a second rod body channel 23311. The piston 24 has a piston through hole 241, the inner diameter of the piston 24 is smaller than the outer diameter of the seat body 2321 and the outer diameter of the driving arm 2332, and the inner diameter of the piston 24 is larger than the outer diameter of the assembly rod 2322, wherein the top of the assembly rod 2322 is fixedly assembled on the connecting rod 2331 after passing through the piston through hole 241 of the piston 24, and the distance between the seat body 2321 and the driving arm 2332 is larger than the height of the piston 24, so that the piston 24 is drivably installed on the bottom of the driving assembly 23, and the first rod body channel 23221 of the assembly rod 2322 is connected to the second rod body channel 23311 of the connecting rod 2331, so as to form the liquid extraction channel 231 of the driving assembly 23.

[0048] In the initial position, the bottom of the piston 24 fits with the seat body 2321 of the piston seat 232, and the piston 24 prevents the liquid extraction channel 231 of the drive assembly 23 from communicating with the pump chamber 211 of the pump body 21. In the first stage when the user presses the head cap 25, the bottom of the piston 24 leaves the seat body 2321 of the piston seat 232 and the top of the piston 24 fits with the driving arm 2332 of the driving rod 233, and the piston 24 allows the liquid extraction channel 231 of the drive assembly 23 to communicate with the pump chamber 211 of the pump body 21. In the second stage when the user presses the head cap 25, the driving arm 2332 of the driving rod 233 drives the piston 24 to move downward in the pump chamber 211 of the pump body 21, and the piston 24 always allows the liquid extraction channel 231 of the drive assembly 23 to communicate with the pump chamber 211 of the pump body 21. In the first stage when the user releases the head cap 25, the top of the piston 24 leaves the driving arm 2332 of the driving rod 233 and the bottom of the piston 24 fits against the seat body 2321 of the piston seat 232. At this time, the piston 24 prevents the liquid collection channel 231 of the driving component 23 from communicating with the pump chamber 211 of the pump body 21. In the second stage when the user releases the head cap 25, the seat body 2321 of the piston seat 232 drives the piston 24 to move upward in the pump chamber 211 of the pump body 21, and the piston 24 always remains in a state of preventing the liquid collection channel 231 of the driving component 23 from communicating with the pump chamber 211 of the pump body 21.

[0049] Optionally, in other examples of the lotion bottle of the present invention, the inner diameter of the piston 24 is equal to the outer diameter of the assembly rod 2322, so that the inner wall of the piston 24 and the outer wall of the assembly rod 2322 can fit each other, and when the piston 24 moves to a position where the opening of the first rod body channel 23221 of the assembly rod 2322 formed in the peripheral wall of the assembly rod 2322 is exposed, the piston 24 allows the liquid extraction channel 231 of the drive assembly 23 to communicate with the pump chamber 211 of the pump body 21, and when the piston 24 moves to a position where the opening of the first rod body channel 23221 of the assembly rod 2322 formed in the peripheral wall of the assembly rod 2322 is blocked, the piston 24 prevents the liquid extraction channel 231 of the drive assembly 23 from communicating with the pump chamber 211 of the pump body 21.

[0050] It is worth mentioning that the fixing and assembling manner of the top of the assembly rod 2322 of the piston seat 232 and the connecting rod 2331 of the driving rod 233 is not limited in the lotion bottle of the present invention. Figures 3 to 6 The top of the assembly rod 2322 extends into the second rod body channel 23311 of the connecting rod 2331, and based on the friction generated between the outer wall of the assembly rod 2322 and the inner wall of the connecting rod 2331, the top of the assembly rod 2322 is fixedly assembled to the connecting rod 2331.

[0051] Reference Figure 3 The head cap 25 has an insertion hole 252, and the top of the connecting rod 2331 is inserted into the insertion hole 252 of the head cap 25 to install the head cap 25 on the top of the connecting rod 2331, thereby installing the head cap 25 on the top of the driving assembly 23.

[0052] Reference Figure 3 and Figure 4 The inner wall of the elastic reset tube 26 is sealingly fitted to the peripheral wall of the connecting rod 2331 of the driving rod 233 to form the back-suction chamber 200 between the elastic reset tube 26 and the connecting rod 2331 of the driving rod 233. During the movement of the driving component 23 relative to the pump body 21, the inner wall of the elastic reset tube 26 and the peripheral wall of the connecting rod 2331 can always remain sealed, so that in the process of pressing the head cap 25 to move the driving component 23, the piston 24 and the head cap 25 downward, the leakage of the lotion or other fluid entering the back-suction chamber 200 can be avoided. During the resetting of the driving component 23, the piston 24 and the head cap 25, the back-suction chamber 200 formed between the elastic reset tube 26 and the connecting rod 2331 can form a negative pressure environment to back-suction the lotion or other fluid remaining in the head cap channel 251 of the head cap 25, thereby avoiding the dripping of the lotion or other fluid in the lotion bottle.

[0053] Continue to refer to the attached Figure 3 , Figure 5 , Figure 6 , Figures 10 to 14The first rod body channel 23221 of the assembly rod 2322 of the piston seat 232 has a first longitudinal extension portion 232211 and a first transverse extension portion 232212, wherein the first longitudinal extension portion 232211 extends from the end surface of the top of the assembly rod 2322 to the bottom of the assembly rod 2322 (i.e., the end of the assembly rod 2322 used to connect the seat body 2321), and the first transverse extension portion 232212 extends from the first longitudinal extension portion 232211 to the peripheral wall of the assembly rod 2322, so that the opening of the first rod body channel 23221 formed on the peripheral wall of the assembly rod 2322 is adjacent to the seat body 2321, so that when the bottom of the piston 24 is attached to the seat body 2321, the piston 24 can prevent the liquid extraction channel 231 of the drive assembly 23 from communicating with the pump chamber 211 of the pump body 21.

[0054] The second rod body channel 23311 of the connecting rod 2331 of the driving rod 233 has a second longitudinal extension portion 233111 and a second transverse extension portion 233112, the second longitudinal extension portion 233111 extending from the end surface of the bottom of the connecting rod 2331 toward the top, and the second transverse extension portion 233112 extending from the top of the second longitudinal extension portion 233111 to the peripheral wall of the connecting rod 2331, so that after the top of the assembling rod 2322 extends into the second rod body channel 23311 of the connecting rod 2331, the first rod body channel 23221 of the assembling rod 2322 and the second rod body channel 23311 of the connecting rod 2331 are connected to form the liquid collection channel 231 of the driving assembly 23, and the liquid collection channel 231 of the driving assembly 23 can be connected to the suction chamber 200 formed between the connecting rod 2331 and the elastic reset tube 26. In addition, since the second lateral extension portion 233112 of the connecting rod 2331 is located at the top of the connecting rod 2331, after pressing the head cap 25 to allow the head cap 25 and the driving assembly 23 to move downward, the liquid extraction channel 231 of the driving assembly 23 can always be connected to the suction chamber 200 of the suction lotion pump 20.

[0055] Reference Figure 3 , Figure 5 and Figure 6The aspiration lotion pump 20 further comprises a pump plug 27, the pump plug 27 has a pump plug through hole 271, the inner diameter of the pump plug 27 is larger than the outer diameter of the connecting rod 2331 of the driving rod 233 and smaller than the outer diameter of the driving arm 2332. The pump plug 27 is fixedly mounted in the pump cavity 211 of the pump body 21, for example, based on the friction force generated between the outer wall of the pump plug 27 and the inner wall of the pump body 21, the pump plug 27 can be fixedly mounted in the pump cavity 211 of the pump body 21, and the top of the connecting rod 2331 passes through the pump plug through hole 271 of the pump plug 27, wherein since the inner diameter of the pump plug 27 is smaller than the outer diameter of the driving arm 2332, the pump plug 27 can prevent the driving assembly 23 from falling from the pump cavity 211 of the pump body 21, so as to ensure the stability and reliability of the aspiration lotion pump 20. The bottom of the elastic return tube 26 abuts against the pump plug 27 so that the bottom of the elastic return tube 26 remains stationary relative to the pump body 21 .

[0056] Preferably, the pump plug 27 is fixedly installed in the middle of the pump cavity 211 of the pump body 21, so that the bottom of the elastic reset tube 26 can sink into the pump cavity 211 of the pump body 21, which is beneficial to reduce the height of the back suction lotion pump 20 and hide the elastic reset tube 26.

[0057] Continue to refer to the attached Figures 1 to 3 , Figure 5 and Figure 6 The suction lotion pump 20 further includes a cap 28, which is snap-fitted to the top of the pump body 21, wherein the cap 28 can be mounted on the edge of the bottle body 10 to mount the suction lotion pump 20 on the bottle body 10. In a specific example of the lotion bottle of the present invention, the cap 28 can be screwed on the edge of the bottle body 10.

[0058] Continue to refer to the attached Figures 1 to 3 , Figure 5 and Figure 6 The suction lotion pump 20 further includes a suction tube 29, one end of which is inserted into the bottom of the pump body 21, and the lumen of the suction tube 29 can be connected to the bottom channel 212 of the pump body 21. After the suction lotion pump 20 is installed on the bottle body 10, the suction tube 29 can extend to the bottom of the bottle body 10.

[0059] Continue to refer to the attached Figures 3 to 9The elastic reset tube 26 includes a first ring body 261, a second ring body 262, a third ring body 263, a first bellows 264, a second bellows 265 and a fitting ring 266. The first ring body 261, the second ring body 262 and the third ring body 263 are arranged at intervals from each other in the height direction. The first bellows 264 extends downward from the inner side of the second ring body 262 to the first ring body 261. For example, the first bellows 264 can be The inner side of the second ring body 262 extends downward to the inner side of the first ring body 261, and the second bellows 265 extends upward from the inner side of the second ring body 262 to the third ring body 263. For example, the second bellows 264 can extend upward from the inner side of the second ring body 262 to the inner side of the third ring body 263, and the fitting ring 266 extends downward from the inner side of the second ring body 262, so that there is a gap between the fitting ring 266 and the first bellows 264.

[0060] The first ring body 261 is used to form the bottom of the elastic reset tube 26 to define the lower opening 2602 of the elastic reset tube 26. The first ring body 261 abuts against the pump plug 27 so that the bottom of the elastic reset tube 26 abuts against the pump plug 27. The third ring body 263 is used to form the top of the elastic reset tube 26 to define the upper opening 2601 of the elastic reset tube 26. The third ring body 263 abuts against the head cap 25. The fitting ring 266 is fitted to the peripheral wall of the connecting rod 2331 in a manner of being constrained to the connecting rod 2331. In this way, the suction lotion pump 20 forms the suction chamber 200 between the elastic reset tube 26 and the connecting rod 2331. That is to say, the inner diameter of the fitting ring 266 is slightly smaller than the outer diameter of the connecting rod 2331. After the fitting ring 266 is mounted on the connecting rod 2331, the fitting ring 266 provides a restraining force to be restrained to the connecting rod 2331. In this way, no gap will be generated between the fitting surface 2661 of the fitting ring 266 and the peripheral wall of the connecting rod 2331, so that the inner wall of the elastic reset tube 26 can be sealingly fitted to the peripheral wall of the connecting rod 2331.

[0061] When the head cap 25 is pressed and the drive assembly 23 and the piston 24 are driven downward by the head cap 25, the head cap 25 compresses the elastic reset tube 26 in the direction of the pump plug 27, so that the first bellows 264 and the second bellows 265 of the elastic reset tube 26 are deformed in the height direction to allow the elastic reset tube 26 to accumulate elastic potential energy. In this process, the first ring body 261, the second ring body 262 and the third ring body 263 prevent the elastic reset tube 26 from expanding in all directions, while ensuring that the elastic reset tube 26 provides sufficient restoring force When the fitting ring 266 is in contact with the connecting rod 2331, a gap is avoided between the fitting surface 2661 of the fitting ring 266 and the peripheral wall of the connecting rod 2331, thereby avoiding leakage of the lotion or other fluids entering the re-suction chamber 200 of the re-suction lotion pump 20. At the same time, by providing a gap between the fitting ring 266 and the first bellows 264, the fitting ring 266 can be slightly deformed toward the first bellows 264, and the sealing between the fitting surface 2661 of the fitting ring 266 and the peripheral wall of the connecting rod 2331 is ensured on the basis that the fitting ring 266 is bound to the connecting rod 2331. In other words, the fitting ring 266 and the connecting rod 2331 are in face-to-face contact. When the head cap 25 is released, the first bellows 264 and the second bellows 265 restore the elastic reset tube 26 to the initial state during the extension process, and the elastic reset tube 26 pushes the driving assembly 23, the piston 24 and the head cap 25 to move upward and reset.

[0062] Whether when the head cap 25 is being pressed or when the head cap 25 is being released, the fitting ring 266 of the elastic reset tube 26 is fitted to the peripheral wall of the connecting rod 2331. This not only prevents leakage of fluids such as lotion entering the suction chamber 200 during the process of pressing the head cap 25 to move the drive assembly 23, the piston 24 and the head cap 25 downward, but also forms a negative pressure environment in the suction chamber 200 formed between the elastic reset tube 26 and the connecting rod 2331 during the process of resetting the drive assembly 23, the piston 24 and the head cap 25, so as to suck back the lotion or other fluids remaining in the head cap channel 251 of the head cap 25 to avoid dripping.

[0063] In addition, when the head cap 25 is pressed and the drive assembly 23 and the piston 24 are driven downward by the head cap 25, the head cap 25 compresses the first bellows 264 and the second bellows 265 toward the pump plug 27, and the first bellows 264 and the second bellows 265 can be compressed and deformed. In this way, on the basis of the reduced height dimension of the elastic reset tube 26, the elastic reset tube 26 can have sufficient elasticity to drive the drive assembly 23, the piston 24 and the head cap 25 to reset.

[0064] Preferably, the height dimension of the first bellows 264 is smaller than the height dimension of the second bellows 265, so that the suction chamber 200 of the suction lotion pump 20 has a larger height dimension. In this way, on the one hand, in the process of pressing the head cap 25 to move the head cap 25 and the driving assembly 23 downward, it can be ensured that the liquid intake channel 231 of the driving assembly 23 is always connected to the suction chamber 200. On the other hand, in the process of resetting the head cap 25, the driving assembly 23 and the piston 24, the negative pressure of the suction chamber 200 of the suction lotion pump 20 can be greater to ensure that the lotion or other fluids remaining in the head cap channel 251 of the head cap 25 are sucked back into the suction chamber 200, so as to avoid the dripping of lotion or other fluids in the lotion bottle.

[0065] In the attached Figures 1 to 14 In the specific example of the lotion bottle of the present invention, the elastic reset tube 26 is formed of polyethylene (PE) material by a blow molding process, so that the elastic reset tube 26 is formed and has suitable elasticity.

[0066] Preferably, the first ring body 261 of the elastic reset tube 26 is sealed against the pump plug 27, and the third ring body 263 is sealed against the head cap 25, in this way, the lotion or other fluid entering the suction chamber 200 of the suction lotion pump 20 is prevented from leaking. Preferably, the middle part of the third ring body 263 of the elastic reset tube 26 has an annular boss 2631 extending upward, and the head cap 25 has an annular groove 253, the annular boss 2631 is inserted into the annular groove 253 of the head cap 25, and the annular boss 2631 and the inner wall of the head cap 25 used to form the annular groove 253 are fitted to each other, so that the third ring body 263 is sealed against the head cap 25.

[0067] Continue to refer to the attached Figure 3The head cap 25 has a shielding ring 254 extending downward, and the shielding ring 254 is located on the outside of the elastic reset tube 26 and can pass through the cover perforation 281 of the cover 28 and extend to the pump chamber 211 of the pump body 21. In this way, the elastic reset tube 26 can be hidden to protect the elastic reset tube 26.

[0068] Reference Figures 10 to 14 , and combined with the attached Figure 1 The specific process of the re-suction lotion pump 20 pumping the lotion or other fluid contained in the bottle 10 is as follows: As attached Fig.10 and Fig.11 As shown, due to the large friction between the peripheral wall of the piston 24 and the inner wall of the pump body 21, when the user starts to press the head cap 25, the head cap 25 and the drive assembly 23 move downward relative to the pump body 21 and the piston 24, and the bottom of the piston 24 leaves the seat body 2321 of the piston seat 232 and the top of the piston 24 fits against the drive arm 2332 of the drive rod 233. At this time, the piston 24 allows the liquid extraction channel 231 of the drive assembly 23 to be in contact with the liquid extraction channel 231 of the drive assembly 23. The pump chamber 211 of the pump body 21 is connected, so that the pump chamber 211 of the pump body 21, the liquid intake channel 231 of the drive assembly 23, the suction chamber 200 of the suction lotion pump 20 and the head cap channel 251 of the head cap 25 are connected in sequence, and the head cap 25 compresses the elastic reset tube 26 toward the pump plug 27, and the elastic reset tube 26 is deformed in the height direction to accumulate elastic potential energy, and the valve body 22 is maintained in the position of closing the bottom channel 212 of the pump body 21.

[0069] like Fig.12 As shown, when the user continues to press the head cap 25, the head cap 25, the drive assembly 23 and the piston 24 move downward relative to the pump body 21, and the valve body 22 remains in the position of closing the bottom channel 212 of the pump body 21. The lotion and other fluids in the pump chamber 211 of the pump body 21 are discharged in sequence through the pump chamber 211 of the pump body 21, the liquid extraction channel 231 of the drive assembly 23, the back suction chamber 200 of the back suction lotion pump 20 and the head cap channel 251 of the head cap 25. The head cap 25 continues to compress the elastic reset tube 26 toward the pump plug 27, and the prime elastic reset tube 26 is deformed in the height direction to accumulate elastic potential energy. The space of the back suction chamber 200 formed between the elastic reset tube 26 and the connecting rod 2331 of the back suction lotion pump 20 is reduced.

[0070] like Fig.13As shown, due to the large friction between the peripheral wall of the piston 24 and the inner wall of the pump body 21, after the user releases the head cap 25, the elastic reset tube 26 pushes the head cap 25 and the drive assembly 23 to move upward relative to the pump body 21 and the piston 24 in the process of restoring the initial state, and the top of the piston 24 leaves the drive arm 2332 of the drive rod 233 and the bottom of the piston 24 fits against the seat body 2321 of the piston seat 232. At this time, the piston 24 prevents the liquid extraction channel 231 of the drive assembly 23 from communicating with the pump chamber 211 of the pump body 21.

[0071] like Fig.14 As shown, the elastic reset tube 26 continues to push the head cap 25, the drive assembly 23 and the piston 24 to move upward relative to the pump body 21 during the process of restoring the initial state. On the one hand, the pump chamber 211 of the pump body 21 forms a negative pressure environment, so that the valve body 22 opens the bottom channel 212 of the pump body 21 and allows the lotion and other fluids contained in the bottle body 10 to enter the pump chamber 211 through the bottom channel 212 of the pump body 21. After the pressure in the pump chamber 211 of the pump body 21 and the pressure in the bottle body 10 are restored to balance, the valve body 22 closes the bottom channel 212 of the pump body 21 again. On the other hand, the space of the re-suction chamber 200 of the re-suction lotion pump 20 is increased to form a negative pressure environment, and the lotion and other fluids remaining in the head cap channel 251 of the head cap 25 are sucked back into the re-suction chamber 200 to avoid dripping.

[0072] Attached Fig.15 A modified example of the suction lotion pump 20 of the lotion bottle of the present invention is shown. Figures 2 to 14 The difference of the described back suction lotion pump 20 shown is that Fig.15 In the specific example of the aspiration lotion pump 20 shown, the aspiration lotion pump 20 further includes an auxiliary elastic member 210, the bottom of the auxiliary elastic member 210 remains unchanged relative to the pump body 21, and the top of the auxiliary elastic member 210 abuts against the head cap 25. When the user presses the head cap 25, the auxiliary elastic member 210 and the elastic reset tube 26 are both compressed and deformed in the height direction to accumulate elastic potential energy. After the user releases the head cap 25, the auxiliary elastic member 210 and the elastic reset tube 26 jointly push the head cap 25, the drive assembly 23 and the piston 24 to reset in the process of restoring the initial state. That is, the auxiliary elastic member 210 can provide an auxiliary restoring force to assist the elastic reset tube 26 in pushing the head cap 25 and the drive assembly 23 to move upward, which enables the aspiration lotion pump 20 to pump viscous fluids such as lotions. Continued reference Fig.15 In this specific example of the suction lotion pump 20 of the lotion bottle of the present invention, the auxiliary elastic member 210 is sleeved on the outside of the elastic reset tube 26, so that the elastic reset tube 26 isolates the lotion and other fluids from the auxiliary elastic member 210, preventing the auxiliary elastic member 210 from contacting the lotion and other fluids. In this way, the lotion bottle can not only prevent the auxiliary elastic member 210 from being corroded, but also prevent the lotion and other fluids from being contaminated.

[0073] Continue to refer to the attached Fig.15 The bottom of the auxiliary elastic member 210 abuts against the bottom of the first ring body 261 of the elastic reset tube 26, so that the bottom of the auxiliary elastic member 210 can remain unchanged relative to the pump body 21, and the elastic reset tube 26 can isolate the auxiliary elastic member 210 and the pump plug 27, and the top of the auxiliary elastic member 210 abuts against the top of the third ring body 263 of the elastic reset tube 26, so that the top of the auxiliary elastic member 210 abuts against the head cap 25 through the elastic reset tube 26, and the elastic reset tube 26 can isolate the auxiliary elastic member 210 and the head cap 25. When the user presses the head cap 25, the auxiliary elastic member 210 can be pressed toward the pump plug 27 by the head cap 25 and deformed in the height direction.

[0074] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified without departing from the principles.

Claims

1. A suction lotion pump, characterized in that: include: a head cap, wherein the head cap has a head cap channel; A pump body, wherein the pump body has a pump cavity and a bottom channel connected to the pump cavity; a valve body, wherein the valve body is configured to selectively open and close the bottom passage of the pump body; A driving assembly, wherein the driving assembly has a liquid extraction channel, and the head cap is installed on the top of the driving assembly; A piston, wherein the piston is drivably mounted on the bottom of the driving assembly and is movably mounted on the pump chamber of the pump body, and the piston is configured to selectively allow and prevent the liquid extraction channel of the driving assembly from communicating with the pump chamber of the pump body; as well as An elastic reset tube, wherein the elastic reset tube is sleeved on the top of the driving assembly, the bottom of the elastic reset tube remains stationary relative to the pump body, and the top is sealed against the head cap, wherein the inner wall of the elastic reset tube is sealedly fitted to the driving assembly to form a space-variable back-suction chamber between the elastic reset tube and the driving assembly, and the liquid extraction channel of the driving assembly and the head cap channel of the head cap are respectively connected to the back-suction chamber.

2. The lotion reabsorption pump according to claim 1, wherein the driving assembly comprises a piston seat and a driving rod, the piston seat comprises a seat body and an assembly rod extending upward from the seat body, the assembly rod having a first rod body channel, the driving rod comprising a connecting rod and a driving arm extending outward from the bottom of the connecting rod, the connecting rod having a second rod body channel, the piston having a piston through hole, the inner diameter of the piston being smaller than the outer diameter of the seat body and the outer diameter of the driving arm, the inner diameter of the piston being greater than or equal to the outer diameter of the bottom of the assembly rod, the top of the assembly rod being fixedly assembled to the connecting rod after passing through the piston through hole of the piston, the distance between the seat body and the driving arm being greater than the height of the piston, so that the piston can be drivably mounted on the bottom of the driving assembly, the first rod body channel of the assembly rod and the second rod body channel of the connecting rod are communicated to form the liquid extraction channel of the driving assembly.

3. The aspiration lotion pump according to claim 2, wherein the bottom of the elastic reset tube is sealingly attached to the peripheral wall of the connecting rod of the driving rod.

4. The aspiration lotion pump according to claim 3, wherein the aspiration lotion pump comprises a pump plug, the pump plug having a pump plug through hole, the inner diameter of the pump plug being larger than the outer diameter of the connecting rod of the driving rod and smaller than the outer diameter of the driving arm, wherein the pump plug is fixedly mounted in the pump cavity of the pump body, the top of the connecting rod passes through the pump plug through hole of the pump plug, wherein the bottom of the elastic reset tube abuts against the pump plug to keep the bottom of the elastic reset tube stationary relative to the pump body.

5. The liquid return pump according to claim 4, wherein the elastic reset tube comprises a first ring body, a second ring body, a third ring body, a first bellows, a second bellows and a fitting ring, wherein the first ring body, the second ring body and the third ring body are arranged at intervals from each other along the height direction, the first bellows extends downward from the inner side of the second ring body to the first ring body, the second bellows extends upward from the inner side of the second ring body to the third ring body, the fitting ring extends downward from the inner side of the second ring body, and there is a gap between the fitting ring and the first bellows, wherein the first ring body abuts against the pump plug, the third ring body abuts against the head cap, and the fitting ring fits against the peripheral wall of the connecting rod in a manner constrained to the connecting rod. 6 . The aspiration lotion pump according to claim 5 , wherein a height dimension of the first bellows is smaller than a height dimension of the second bellows.

7. The aspiration lotion pump according to any one of claims 1 to 6, wherein the aspiration lotion pump comprises an auxiliary elastic member, a bottom of the auxiliary elastic member remains unchanged relative to the pump body, and a top of the auxiliary elastic member abuts against the head cap.

8. The suction lotion pump according to claim 5 or 6, wherein the suction lotion pump comprises an auxiliary elastic member, a bottom of the auxiliary elastic member abuts against the first ring body, and a top of the auxiliary elastic member abuts against the second ring body.

9. The re-absorption lotion pump according to any one of claims 1 to 7, wherein the re-absorption lotion pump comprises a cover, and the cover is snap-fittedly mounted on the top of the pump body.

10. Lotion bottle, characterized in that: include: Bottle body; and The suction lotion pump according to any one of claims 1 to 9, wherein the suction lotion pump is mounted on the bottle.

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