Plastic spring and emulsion pump

Abstract

The utility model discloses a plastic spring and an emulsion pump, the plastic spring comprises an upper ring body, a lower ring body, a traction part and at least three elastic legs, and the elastic legs and the traction part respectively spirally extend around the central axis of the plastic spring. One end of the elastic leg extends upwards to and is connected to the upper ring body, the other end of the elastic leg extends downwards to and is connected to the lower ring body, one end of the traction part extends upwards to and is connected to the elastic leg, and the other end of the traction part extends downwards to and is connected to the elastic leg. The traction part and each elastic leg are respectively provided with a plurality of connecting positions, and when the plastic spring is compressed to enable the elastic legs to be extruded and deformed, the traction section pulls the two adjacent elastic legs so as to prevent the elastic legs from expanding towards the periphery of the plastic spring.

Description

Technical Field

[0001] The utility model relates to a packaging container, in particular to a plastic spring and a lotion pump. Background Art

[0002] Lotion packaging containers are widely used in daily life. Whether it is shampoo, shower gel and other products for personal care, or dishwashing liquid for kitchen cleaning, they are all packaged in lotion packaging containers. Lotion packaging containers usually provide a lotion pump, which allows the user to pump lotion from the container by pressing the head cap. Usually, the lotion pump is provided with a metal spring for resetting the head cap. When the head cap is pressed, the metal spring is compressed and deformed to accumulate elastic potential energy. When the head cap is released, the metal spring pushes the head cap upward to reset when it returns to its original state. Lotion pumps using metal springs have many problems. For example, metal springs are prone to rust, causing the lotion pump to fail or the lotion to be contaminated. When the lotion packaging container is recycled, it needs to be disassembled and plastic products and metal products need to be sorted. Recycling is difficult and the recycling cost is high. In order to solve these problems, plastic springs were invented and used. For example, a high-elastic plastic spring is disclosed in a Chinese utility model patent with authorization announcement number CN214987297U, which includes a first positioning ring and a second positioning ring. The front and rear ends of the spring are cross-arranged with elastic parts, and the two ends of the elastic part are respectively connected to the first positioning ring and the second positioning ring. The elastic part is wavy and has at least one arc surface. The arc surface is provided with a support ring, a first positioning ring, a second positioning ring, and an accommodating cavity between the support ring and the elastic part. Although the spring is provided with a support ring between the two elastic parts, it is limited by the arrangement of the two elastic parts and the first positioning ring and the second positioning ring. When the spring is squeezed, the elastic part of the spring will still expand around. Once the elastic part of the spring expands around, it will inevitably cause the elastic part to scratch the inner wall of the pump body, causing the feel of the lotion pump to deteriorate, and even the elastic part will be stuck by the pump body and cannot be reset.

[0003] In addition, when the lotion packaging container is used, the head cap of the lotion pump of the lotion bottle is pressed downward, and the fluid in the pump chamber of the lotion pump can be discharged through the head cap channel of the head cap. At this time, the spring of the lotion pump is compressed and accumulates elastic potential energy. When the pressure applied to the head cap of the lotion pump is removed, the spring pushes the head cap upward in the process of restoring the initial state to allow the fluid in the bottle body of the lotion bottle to be replenished into the pump chamber of the lotion pump for discharge when the head cap is pressed next time, thereby achieving fluid pumping. The lotion pump of the existing lotion bottle is usually in a pop-up state. When transporting or carrying the lotion bottle, in order to prevent the head cap of the lotion pump from being accidentally pressed and causing leakage, the lotion bottle is usually provided with a cover to cover the head cap of the lotion pump. The cover is removed before use to expose the head cap of the lotion pump. When transporting or carrying, the cover is covered with the head cap to prevent the head cap from being accidentally pressed. When transporting or carrying a lotion bottle, the cover cap is used to cover the head cap of the lotion pump, which can prevent the head cap of the lotion pump from being pressed by mistake. However, this method still has many defects, as follows. First, since the cover cap needs to be provided to cover the head cap of the lotion pump, not only the cost of the lotion bottle is increased, but also it is necessary to consider how to reliably cover the outside of the head cap of the lotion pump to prevent the cover cap from falling off during the transportation or carrying of the lotion bottle. Secondly, the cover cap is used to cover the outside of the head cap of the lotion pump, resulting in a larger height dimension of the lotion bottle when being transported or stored, which requires more space and increases the transportation cost and storage cost. Utility Model Content

[0004] One object of the utility model is to provide a plastic spring and a lotion pump, wherein when the plastic spring is squeezed, at least three elastic legs of the plastic spring are prevented from expanding in all directions to prevent the plastic spring from touching the inner wall of the pump body and / or the head cap of the lotion pump.

[0005] One object of the utility model is to provide a plastic spring and a lotion pump, wherein when the plastic spring is squeezed, the traction portion of the plastic spring can pull the elastic legs to limit the deformation direction of the elastic legs to the height direction of the plastic spring, thereby preventing the elastic legs from expanding to the surroundings.

[0006] One object of the present invention is to provide a plastic spring and a lotion pump, wherein the elastic legs of the plastic spring respectively extend in a spiral shape around the central axis of the plastic spring, so that when the plastic spring is squeezed, without the assistance of the traction part, the elastic legs can make the plastic spring evenly stressed in the circumferential direction. Therefore, the plastic spring of the present invention does not require the traction part to be directly connected to the upper ring body and the lower ring body of the plastic spring, which is conducive to reducing the cost of the plastic spring by saving materials and flexibly designing the structural relationship between the elastic legs and the traction part of the plastic spring according to needs.

[0007] One object of the utility model is to provide a plastic spring and a lotion pump, wherein the top of the traction portion is connected to one of the elastic legs, which is not connected to the upper ring body, so that the plastic spring avoids forming a triangular structure between the traction portion, the elastic legs and the upper ring body, and correspondingly, the bottom of the traction portion is connected to one of the elastic legs, which is not connected to the lower ring body, so that the plastic spring avoids forming a triangular structure between the traction portion, the elastic legs and the lower ring body, so that all height positions of the plastic spring can be compressed to increase the deformation amount of the plastic spring.

[0008] One object of the present utility model is to provide a plastic spring and a lotion pump, wherein the extension direction of the elastic leg is opposite to the extension direction of the traction portion. For example, in some embodiments, the elastic leg extends spirally in a counterclockwise direction around the central axis of the plastic spring, and the traction portion extends spirally in a clockwise direction around the central axis of the plastic spring. In other embodiments, the elastic leg extends spirally in a clockwise direction around the central axis of the plastic spring, and the traction portion extends spirally in a counterclockwise direction around the central axis of the plastic spring. In this way, when the plastic spring is squeezed, on the one hand, the traction portion can pull the elastic legs to prevent the elastic legs from expanding to the surroundings, and on the other hand, the traction portion is compressed in the height direction, so that after the pressure applied to the plastic spring is cancelled, the traction portion can provide a restoring force for the plastic spring to return to its initial state.

[0009] One object of the utility model is to provide a plastic spring and a lotion pump, wherein when the self-locking lotion pump is in a locked state, a liquid extraction unit of the self-locking lotion pump is prevented from being pressed, so as to avoid the problem of liquid leakage in the lotion bottle caused by the self-locking lotion pump being pressed by mistake, and correspondingly, when the self-locking lotion pump is in a released state, the liquid extraction unit of the self-locking lotion pump is allowed to be pressed to extract liquid from the bottle body of the lotion bottle.

[0010] An object of the present utility model is to provide a plastic spring and a lotion pump, wherein when the self-locking lotion pump is in a locked state, the height dimension of the self-locking lotion pump can be reduced to reduce the height dimension of a lotion bottle to which the self-locking lotion pump is applied, thereby reducing the space occupied by the lotion bottle.

[0011] One object of the utility model is to provide a plastic spring and a lotion pump, wherein the self-locking lotion pump provides a locking unit, and the locking unit switches between a first locking position and a second locking position by changing the locking positions of an adjusting portion and a locking portion of the locking unit. When the locking unit is in the first locking position, the self-locking lotion pump is in a locked state, and when the locking unit is in the second locking position, the self-locking lotion pump is in a released state, so that the self-locking lotion pump switches between the locked state and the released state by changing the locking positions of the adjusting portion and the locking portion.

[0012] One object of the present invention is to provide a plastic spring and a lotion pump, wherein the locking unit can be switched between a first locking position and a second locking position by driving the adjusting portion to rotate relative to the locking portion, and accordingly, the self-locking lotion pump can be switched between a locked state and a released state. Preferably, the liquid collection unit is configured to drive the adjusting portion to rotate relative to the locking portion, so as to facilitate user operation.

[0013] One object of the utility model is to provide a plastic spring and a lotion pump, wherein opposite ends of the spring of the self-locking lotion pump respectively abut against the liquid taking unit and the adjusting portion, so that when the self-locking lotion pump is in a locked state, the self-locking lotion pump can prevent the spring from being over-compressed, thereby ensuring the elasticity of the spring and improving the reliability of the self-locking lotion pump.

[0014] One object of the utility model is to provide a plastic spring and a lotion pump, wherein opposite ends of the spring of the self-locking lotion pump respectively abut against the liquid taking unit and the adjusting part, so that when the adjusting part is driven to rotate relative to the locking part, the spring is stationary relative to the liquid taking unit and the adjusting part, so as to avoid the spring being subjected to force and ensure the elasticity of the spring.

[0015] An object of the utility model is to provide a plastic spring and a lotion pump, wherein when the self-locking lotion pump is in a locked state, at least a portion of the peripheral wall of the assembly seat of the liquid extraction unit is in contact with the inner wall of the pump body to prevent liquid leakage.

[0016] One object of the utility model is to provide a plastic spring and a lotion pump, wherein after the pressure applied to the head cap of the spray pump is released, the spray pump can realize that the flow control element of the liquid taking part prevents the shell space of the liquid taking shell and the top liquid outlet from being connected without the need for the spring to provide a restoring force, thereby reducing the requirement for the rebound ability of the spring.

[0017] One object of the utility model is to provide a plastic spring and a lotion pump, wherein after the pressure applied to the head cap is released, the support column of the liquid extraction portion and the air in the column perforation of the support column can provide a composite restoring force to ensure that the flow control element is reliably reset and prevent the shell space of the liquid extraction shell and the top liquid outlet from being connected.

[0018] One object of the present utility model is to provide a plastic spring and a lotion pump, wherein after the pressure applied to the head cap is released, the support column and the air in the column perforation located in the support column can provide a composite restoring force to ensure that the flow control element is reset in time to prevent the shell space of the liquid extraction shell and the top liquid outlet from being connected.

[0019] One object of the utility model is to provide a plastic spring and a lotion pump, wherein the flow control element of the liquid taking part divides the shell space of the liquid taking shell into an upper space and a lower space which are independent of each other, in this way, on the one hand, when the head cap is pressed, the fluid in the pump chamber of the spray pump enters the upper space from the side liquid inlet hole of the liquid taking shell and can quickly push the flow control element to move downward, so as to allow the upper space and the top liquid outlet hole to be connected and improve the sensitivity of the spray pump, and on the other hand, the fluid entering the upper space is prevented from entering the lower space, so as to avoid adversely affecting the rebound ability of the support column located in the lower space.

[0020] One object of the utility model is to provide a plastic spring and a lotion pump, wherein in some embodiments, the spring is a plastic spring, and when compressed, the plastic spring can prevent the extension legs from expanding to the surroundings, that is, the deformation direction of the plastic spring is limited to the height direction. In this way, the spray pump can prevent the plastic spring from scratching the pump body and / or the inner wall of the head cap when compressed, so as to ensure the feel and smoothness of the user when pressing the head cap, and the spray pump can prevent the extension legs of the plastic spring from being stuck by the inner wall of the pump body and / or the head cap to cause failure, so as to improve the reliability of the spray pump.

[0021] According to one aspect of the present invention, the present invention provides a self-locking lotion pump, comprising:

[0022] a spring;

[0023] A valve;

[0024] a pump body having a pump body space and a liquid inlet passage connected to the pump body space, wherein the valve is configured to open or close the liquid inlet passage of the pump body;

[0025] A liquid taking unit, comprising a connecting rod, an assembly seat and a piston and having a fluid channel, wherein the connecting rod has a rod channel, the assembly seat is assembled at the bottom of the connecting rod, the fluid channel is formed between the connecting rod and the assembly seat, and the fluid channel and the rod channel are connected, the piston is movably mounted on the bottom of the connecting rod, wherein the bottom of the liquid taking unit is movably mounted on the pump body space of the pump body in a manner that the peripheral wall of the piston and the inner wall of the pump body are fitted, and the self-locking lotion pump forms a pump chamber between the liquid taking unit and the pump body, and the piston is constructed to allow or prevent the fluid channel of the liquid taking unit from being connected to the pump chamber; and

[0026] A locking unit, comprising a locking portion and an adjusting portion, wherein the locking portion is located in the pump body space of the pump body, and the locking portion is constructed to remain unchanged in height position relative to the pump body, the adjusting portion is movably mounted on the middle portion of the connecting rod and can be locked at different height positions of the locking portion, and the adjusting portion is constructed to limit the maximum distance of upward movement of the connecting rod, wherein the bottom of the spring abuts against the adjusting portion, and the top of the spring abuts against the top of the connecting rod.

[0027] According to another aspect of the utility model, the utility model further provides a lotion bottle, which includes a bottle body and a self-locking lotion pump installed on the bottle body, wherein the self-locking lotion pump includes:

[0028] a spring;

[0029] A valve;

[0030] a pump body having a pump body space and a liquid inlet passage connected to the pump body space, wherein the valve is configured to open or close the liquid inlet passage of the pump body;

[0031] A liquid taking unit, comprising a connecting rod, an assembly seat and a piston and having a fluid channel, wherein the connecting rod has a rod channel, the assembly seat is assembled at the bottom of the connecting rod, the fluid channel is formed between the connecting rod and the assembly seat, and the fluid channel and the rod channel are connected, the piston is movably mounted on the bottom of the connecting rod, wherein the bottom of the liquid taking unit is movably mounted on the pump body space of the pump body in a manner that the peripheral wall of the piston and the inner wall of the pump body are fitted, and the self-locking lotion pump forms a pump chamber between the liquid taking unit and the pump body, and the piston is constructed to allow or prevent the fluid channel of the liquid taking unit from being connected to the pump chamber; and

[0032] A locking unit, comprising a locking portion and an adjusting portion, wherein the locking portion is located in the pump body space of the pump body, and the locking portion is constructed to remain unchanged in height position relative to the pump body, the adjusting portion is movably mounted on the middle portion of the connecting rod and can be locked at different height positions of the locking portion, and the adjusting portion is constructed to limit the maximum distance of upward movement of the connecting rod, wherein the bottom of the spring abuts against the adjusting portion, and the top of the spring abuts against the top of the connecting rod.

[0033] According to one aspect of the present invention, the present invention provides a self-locking lotion pump, comprising:

[0034] a spring;

[0035] A valve;

[0036] a piston;

[0037] A mounting seat;

[0038] a head cap having a head cap channel;

[0039] an adjusting portion having at least one movable groove and at least one locking protrusion, wherein the movable groove extends along the height direction of the adjusting portion, and the movable groove does not extend to the top and the bottom of the adjusting portion;

[0040] A locking portion having at least one first locking groove, at least one second locking groove and at least one sliding groove, wherein the sliding groove extends along the height direction of the locking portion, and the first locking groove and the second locking groove are respectively connected to the bottom and the top of the sliding groove;

[0041] A connecting rod having a rod body channel and an abutment platform, wherein the head cap is mounted on the top of the connecting rod in a manner that the head cap channel and the rod body channel are connected, wherein the assembly seat is assembled to the bottom of the connecting rod in a manner that a fluid channel is formed between the assembly seat and the connecting rod, wherein the piston is movably mounted on the bottom of the connecting rod, the top of the piston can abut against or away from the abutment platform of the connecting rod, and the bottom of the piston can abut against or away from the assembly seat; and

[0042] A pump body, which has a pump body space and a liquid inlet channel connected to the pump body space, wherein the valve is installed on the pump body for opening or closing the liquid inlet channel of the pump body, wherein the peripheral wall of the piston fits against the inner wall of the pump body to form a pump chamber between the pump body and the piston, wherein the locking part is fixedly installed in the pump body space of the pump body, wherein the adjusting part is movably mounted on the middle part of the connecting rod, and the locking protrusion of the adjusting part can be locked in the first locking groove or the second locking groove of the locking part, wherein the bottom of the spring abuts against the adjusting part, and the top of the spring abuts against the top of the connecting rod.

[0043] According to another aspect of the present invention, the present invention further provides a self-locking lotion pump, comprising:

[0044] a spring;

[0045] A valve;

[0046] a piston;

[0047] A mounting seat;

[0048] a head cap having a head cap channel;

[0049] an adjusting portion having at least one movable groove and at least one locking protrusion, wherein the movable groove extends along the height direction of the adjusting portion, and the movable groove does not extend to the top and the bottom of the adjusting portion;

[0050] A locking portion having at least one first locking groove, at least one second locking groove and at least one sliding groove, wherein the sliding groove extends along the height direction of the locking portion, and the first locking groove and the second locking groove are respectively connected to the bottom and the top of the sliding groove;

[0051] a fixing portion having a fixing cavity and a guide groove connected to the fixing cavity, wherein the guide groove extends in a spiral manner along a height direction of the fixing portion;

[0052] A connecting rod having a rod body channel and an abutment platform, wherein the head cap is mounted on the top of the connecting rod in a manner that the head cap channel and the rod body channel are connected, wherein the assembly seat is assembled to the bottom of the connecting rod in a manner that a fluid channel is formed between the assembly seat and the connecting rod, wherein the piston is movably mounted on the bottom of the connecting rod, the top of the piston can abut against or away from the abutment platform of the connecting rod, and the bottom of the piston can abut against or away from the assembly seat; and

[0053] A pump body, which has a pump body space and a liquid inlet channel connected to the pump body space, wherein the valve is installed on the pump body for opening or closing the liquid inlet channel of the pump body, wherein the peripheral wall of the piston is fitted to the inner wall of the pump body to form a pump chamber between the pump body and the piston, wherein the fixing part is fixedly installed on the pump body space of the pump body, wherein the locking part is rotatably installed in the fixing chamber of the fixing part, and the first locking groove and the second locking groove of the locking part respectively correspond to different height positions of the guide groove of the fixing part, wherein the locking protrusion of the adjusting part extends to the guide groove of the fixing part after passing through the first locking groove, the second locking groove or the sliding groove of the locking part, and the locking protrusion can be locked in the first locking groove or the second locking groove of the locking part, wherein the bottom of the spring abuts against the adjusting part, and the top of the spring abuts against the top of the connecting rod.

[0054] According to another aspect of the present invention, the present invention further provides a spray pump, comprising:

[0055] a head cap having a head cap channel;

[0056] an atomizing nozzle mounted at the outlet of the head cap channel of the head cap;

[0057] A pump body having a pump body space and a liquid inlet passage connected to the pump body space;

[0058] A piston having a piston channel, wherein the top of the piston is mounted on the head cap, the piston channel of the piston is connected to the head cap channel of the head cap, and the bottom of the piston is movably arranged in the pump body space of the pump body in a manner that the outer wall of the piston fits the inner wall of the pump body, so as to form a pump chamber with a variable space between the bottom of the piston and the pump body;

[0059] a valve configured to allow or prevent the liquid inlet passage of the pump body from communicating with the pump chamber;

[0060] a spring, which is configured such that the relative position of the bottom of the spring and the pump body remains unchanged and the top of the spring abuts against the head cap; and

[0061] A liquid extraction part, comprising a flow control element, a deformable support column and a liquid extraction shell, wherein the liquid extraction shell has a shell space and a top liquid outlet hole and at least one side liquid inlet hole respectively connected to the shell space, wherein the flow control element is movably arranged in the shell space of the liquid extraction shell to allow or prevent the shell space and the top liquid outlet hole from being connected, wherein the bottom of the support column abuts against the liquid extraction shell, and the top of the support column abuts against the flow control element, wherein the liquid extraction shell is installed on the piston, the top liquid outlet hole of the liquid extraction shell is connected to the piston channel of the piston, and the side liquid inlet hole of the liquid extraction shell is connected to the pump chamber.

[0062] According to another aspect of the present invention, the present invention further provides a spray packaging device, characterized in that it includes a packaging container and a spray pump installed on the packaging container, wherein the spray pump further includes:

[0063] a head cap having a head cap channel;

[0064] an atomizing nozzle mounted at the outlet of the head cap channel of the head cap;

[0065] A pump body having a pump body space and a liquid inlet passage connected to the pump body space;

[0066] A piston having a piston channel, wherein the top of the piston is mounted on the head cap, the piston channel of the piston is connected to the head cap channel of the head cap, and the bottom of the piston is movably arranged in the pump body space of the pump body in a manner that the outer wall of the piston fits the inner wall of the pump body, so as to form a pump chamber with a variable space between the bottom of the piston and the pump body;

[0067] a valve configured to allow or prevent the liquid inlet passage of the pump body from communicating with the pump chamber;

[0068] a spring, which is configured such that the relative position of the bottom of the spring and the pump body remains unchanged and the top of the spring abuts against the head cap; and

[0069] A liquid extraction part, comprising a flow control element, a deformable support column and a liquid extraction shell, wherein the liquid extraction shell has a shell space and a top liquid outlet hole and at least one side liquid inlet hole respectively connected to the shell space, wherein the flow control element is movably arranged in the shell space of the liquid extraction shell to allow or prevent the shell space and the top liquid outlet hole from being connected, wherein the bottom of the support column abuts against the liquid extraction shell, and the top of the support column abuts against the flow control element, wherein the liquid extraction shell is installed on the piston, the top liquid outlet hole of the liquid extraction shell is connected to the piston channel of the piston, and the side liquid inlet hole of the liquid extraction shell is connected to the pump chamber.

[0070] According to another aspect of the present invention, the present invention further provides a plastic spring, comprising:

[0071] an upper ring body;

[0072] a lower ring body;

[0073] a traction unit; and

[0074] At least three elastic legs, wherein the elastic legs and the traction portion respectively extend in a spiral shape around the central axis of the plastic spring, one end of the elastic leg extends upward to and is connected to the upper ring body, and the other end extends downward to and is connected to the lower ring body, one end of the traction portion extends upward to and is connected to the elastic leg, and the other end extends downward to and is connected to the elastic leg, wherein the traction portion and each of the elastic legs respectively have a plurality of connection positions.

[0075] According to another aspect of the present invention, the present invention further provides a plastic spring, comprising:

[0076] an upper ring body;

[0077] a lower ring body;

[0078] multiple traction sections; and

[0079] At least three elastic legs, wherein the elastic legs respectively extend in a spiral shape around the central axis of the plastic spring, one end of the elastic leg extends upward to and is connected to the upper ring body, and the other end extends downward to and is connected to the lower ring body, wherein one end of the traction segment extends to and is connected to one of two adjacent elastic legs, and the other end extends to and is connected to the other of the two adjacent elastic legs, and the upper ring body and the lower ring body are not connected to the traction segment, wherein when the plastic spring is compressed and the elastic legs are squeezed and deformed, the traction segment pulls two adjacent elastic legs to prevent the elastic legs from expanding around the plastic spring.

[0080] According to another aspect of the present invention, the present invention further provides a lotion pump, comprising:

[0081] A valve;

[0082] a spring seat;

[0083] A pump body, wherein the pump body has a pump body space and a liquid inlet channel and a top opening respectively connected to the pump body space, the valve is arranged in the pump body space of the pump body, and the valve is arranged to open or close the liquid inlet channel of the pump body;

[0084] A liquid extraction unit, wherein the liquid extraction unit further includes a head cap, a piston, a piston seat and a driving rod and has a movable space, wherein the piston seat includes a seat body and a liquid guide tube extending upward from the seat body as a whole, the liquid guide tube has a liquid guide hole and at least one liquid inlet hole connected to the liquid guide hole, the driving rod has a rod body channel, the head cap has a head cap channel, the top of the liquid guide tube is fixedly mounted on the driving rod, the top of the driving rod is fixedly mounted on the head cap, the rod body channel of the driving rod is connected to the liquid guide hole of the liquid guide tube and the head cap channel of the head cap, and the The liquid taking unit forms the movable space between the seat body and the bottom of the driving rod, the piston is movably arranged in the movable space in a manner of surrounding the outside of the liquid guiding tube, and the top of the piston can be in contact with or away from the bottom of the driving rod, and the bottom of the piston can be away from or in contact with the seat body, wherein the liquid taking unit is movably arranged in the pump body space of the pump body in a manner of the outer wall of the piston being in contact with the inner wall of the pump body, wherein the spring seat is sleeved on the middle part of the driving rod, and the spring seat is fixedly installed in the pump body space of the pump body to prevent the liquid taking unit from being separated from the pump body upward; and

[0085] A plastic spring, wherein the plastic spring comprises an upper ring body, a lower ring body, a traction portion and at least three elastic legs, wherein the elastic legs and the traction portion respectively extend in a spiral shape around the central axis of the plastic spring, one end of the elastic leg extends upward to and is connected to the upper ring body, and the other end extends downward to and is connected to the lower ring body, one end of the traction portion extends upward to and is connected to the elastic leg, and the other end extends downward to and is connected to the elastic leg, wherein the traction portion and each of the elastic legs respectively have a plurality of connection positions, wherein the upper ring body of the plastic spring abuts against the liquid extraction unit, and the lower ring body of the plastic spring abuts against the spring seat.

[0086] According to another aspect of the present invention, the present invention further provides a lotion pump, comprising:

[0087] A valve;

[0088] a spring seat;

[0089] A pump body, wherein the pump body has a pump body space and a liquid inlet channel and a top opening respectively connected to the pump body space, the valve is arranged in the pump body space of the pump body, and the valve is arranged to open or close the liquid inlet channel of the pump body;

[0090] A liquid extraction unit, wherein the liquid extraction unit further includes a head cap, a piston, a piston seat and a driving rod and has a movable space, wherein the piston seat includes a seat body and a liquid guide tube extending upward from the seat body as a whole, the liquid guide tube has a liquid guide hole and at least one liquid inlet hole connected to the liquid guide hole, the driving rod has a rod body channel, the head cap has a head cap channel, the top of the liquid guide tube is fixedly mounted on the driving rod, the top of the driving rod is fixedly mounted on the head cap, the rod body channel of the driving rod is connected to the liquid guide hole of the liquid guide tube and the head cap channel of the head cap, and the The liquid taking unit forms the movable space between the seat body and the bottom of the driving rod, the piston is movably arranged in the movable space in a manner of surrounding the outside of the liquid guiding tube, and the top of the piston can be in contact with or away from the bottom of the driving rod, and the bottom of the piston can be away from or in contact with the seat body, wherein the liquid taking unit is movably arranged in the pump body space of the pump body in a manner of the outer wall of the piston being in contact with the inner wall of the pump body, wherein the spring seat is sleeved on the middle part of the driving rod, and the spring seat is fixedly installed in the pump body space of the pump body to prevent the liquid taking unit from being separated from the pump body upward; and

[0091] A plastic spring, wherein the plastic spring comprises an upper ring body, a lower ring body, a plurality of traction segments and at least three elastic legs, wherein the elastic legs respectively extend in a spiral shape around the central axis of the plastic spring, one end of the elastic leg extends upward to and is connected to the upper ring body, and the other end extends downward to and is connected to the lower ring body, wherein one end of the traction segment extends to and is connected to one of two adjacent elastic legs, and the other end extends to and is connected to the other of the two adjacent elastic legs, and the upper ring body and the lower ring body are not connected to the traction segment, wherein when the plastic spring is compressed and the elastic legs are squeezed and deformed, the traction segment pulls two adjacent elastic legs to prevent the elastic legs from expanding around the plastic spring, wherein the upper ring body of the plastic spring abuts against the liquid extraction unit, and the lower ring body of the plastic spring abuts against the spring seat.

[0092] According to another aspect of the present invention, the present invention further provides a pump core structure using a plastic spring, comprising:

[0093] A pump body having a hollow pump chamber, a liquid inlet at the bottom and an open port at the top;

[0094] A spiral coil connected to the top of the pump body and having an opening extending upward and downward corresponding to the opening;

[0095] A head cap, the lower part of which passes through the opening of the spiral coil and cooperates with the opening guide, and the head cap is provided with a vertically extending guide sleeve;

[0096] A connecting seat, which is arranged in the pump cavity and has an assembly opening in the middle thereof which passes through from top to bottom. The connecting seat, the pump cavity above it, and the inner cavity of the head cap together enclose an assembly cavity;

[0097] a piston rod, which is movably disposed in the pump chamber, the upper end of the piston rod being connected to the guide sleeve of the head cap, and the lower end of the piston rod being arranged through the assembly opening of the connecting seat; and

[0098] A plastic spring is arranged in the assembly cavity, sleeved on the piston rod and the outer periphery of the guide sleeve, with its upper end abutting against the inner top wall of the head cap and its lower end abutting against the upper surface of the connecting seat.

[0099] According to another aspect of the utility model, the utility model further provides a plastic spring, which includes an upper ring body, a lower ring body, a partition ring, a first traction part, a second traction part, at least three first elastic legs and at least three second elastic legs, wherein the first traction part, the second traction part, the first elastic legs, and the second elastic legs respectively extend in a spiral shape around the central axis of the plastic spring, one end of the first elastic legs extends upward to and is connected to the upper ring body, and the other end extends downward to and is connected to the partition ring, one end of the first traction part extends upward to and is connected to the first An elastic leg, the other end of which extends downward to and is connected to the first elastic leg, and the first traction portion and each of the first elastic legs respectively have at least one connection position, one end of these second elastic legs extends upward to and is connected to the partition ring, and the other end extends downward to and is connected to the lower ring body, one end of the second traction portion extends upward to and is connected to the second elastic leg, and the other end extends downward to and is connected to the second elastic leg, and the second traction portion and each of the second elastic legs respectively have at least one connection position, wherein the extension direction of the first elastic leg is opposite to the extension direction of the second elastic leg.

[0100] According to another aspect of the present invention, the present invention further provides a plastic spring, comprising:

[0101] An upper section, wherein the upper section includes an upper ring body, a first assembly ring, a first traction portion and at least three first elastic legs, the first traction portion and the first elastic legs respectively extend spirally around the central axis of the plastic spring, one end of the first elastic legs extends upward to and is connected to the upper ring body, and the other end extends downward to and is connected to the first assembly ring, one end of the first traction portion extends upward to and is connected to the first elastic leg, and the other end extends downward to and is connected to the first elastic leg, and the first traction portion and each of the first elastic legs respectively have at least one connection position; and

[0102] A lower section, wherein the lower section includes a lower ring body, a second assembly ring, a second traction portion and at least three second elastic legs, the second traction portions and the second elastic legs respectively extend spirally around the central axis of the plastic spring, one end of the second elastic legs extends upward to and is connected to the second assembly ring, and the other end extends downward to and is connected to the lower ring body, one end of the second traction portion extends upward to and is connected to the second elastic leg, and the other end extends downward to and is connected to the second elastic leg, and the second traction portion and each of the second elastic legs respectively have at least one connection position;

[0103] The first assembly ring and the second assembly ring are assembled with each other, and the first assembly ring and the second assembly ring are constructed to keep their relative positions unchanged, and the extension direction of the first elastic leg is opposite to the extension direction of the second elastic leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0104] Figure 1 It is a three-dimensional schematic diagram of a pump core structure using a plastic spring according to the first preferred embodiment of the utility model.

[0105] Figure 2 It is a cross-sectional schematic diagram of the pump core structure with a plastic spring according to the above preferred embodiment of the utility model.

[0106] Figure 3 It is a three-dimensional schematic diagram of a piston rod of the pump core structure with a plastic spring according to the above preferred embodiment of the utility model.

[0107] Figure 4 It is a three-dimensional schematic diagram of a connecting seat of the pump core structure with a plastic spring according to the above preferred embodiment of the utility model.

[0108] Figure 5 It is a cross-sectional schematic diagram of a lotion bottle according to a first preferred embodiment of the utility model when a self-locking lotion pump of the lotion bottle is in a locked state.

[0109] Figure 6 It is a cross-sectional schematic diagram of the lotion bottle according to the above preferred embodiment of the utility model when the self-locking lotion pump of the lotion bottle is in a released state.

[0110] Figure 7 It is a three-dimensional schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model from one viewing angle.

[0111] Figure 8It is a three-dimensional schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model from another perspective.

[0112] Fig. 9 It is a schematic exploded view of the self-locking lotion pump of the lotion bottle according to the preferred embodiment of the utility model from one perspective.

[0113] Fig.10 It is a schematic exploded view of the self-locking lotion pump of the lotion bottle according to the preferred embodiment of the present utility model from another perspective.

[0114] Fig.11 It is a cross-sectional schematic diagram in one direction of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model when it is in a locked state.

[0115] Fig.12 It is a cross-sectional schematic diagram from another direction of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model when it is in a locked state.

[0116] Fig.13 It is a cross-sectional schematic diagram of one direction of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model when it is in a released state.

[0117] Fig.14 It is a cross-sectional schematic diagram of the self-locking lotion pump of the lotion bottle in the above preferred embodiment of the utility model in another direction when in a released state.

[0118] Fig.15 It is a partially cutaway schematic diagram of the self-locking lotion pump of the lotion bottle in the preferred embodiment of the present utility model in a locked state.

[0119] Fig.16 It is a partially cutaway schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model in a released state.

[0120] Fig.17 It is a partial structural schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model when switching from a self-locking state to a released state, which shows a first positional relationship between a locking portion and an adjusting portion of a locking unit of the self-locking lotion pump.

[0121] Fig.18 It is a partial structural schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model when switching from a self-locking state to a released state, which shows the second positional relationship between the locking part and the adjusting part of the locking unit of the self-locking lotion pump.

[0122] Fig.19 It is a partial structural schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the present utility model when switching from a self-locking state to a released state, which shows the third positional relationship between the locking part and the adjusting part of the locking unit of the self-locking lotion pump.

[0123] Fig. 20 It is a partial structural schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the present utility model when switching from a self-locking state to a released state, which shows the fourth positional relationship between the locking part and the adjusting part of the locking unit of the self-locking lotion pump.

[0124] Fig.21 It is a schematic exploded view from one perspective of another self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model.

[0125] Fig. 22 It is a schematic exploded view of the self-locking lotion pump of the lotion bottle according to the preferred embodiment of the present utility model from another perspective.

[0126] Fig.23 It is a cross-sectional schematic diagram in one direction of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model when it is in a locked state.

[0127] Fig.24 It is a cross-sectional schematic diagram from another direction of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model when it is in a locked state.

[0128] Fig.25 It is a cross-sectional schematic diagram of one direction of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model when it is in a released state.

[0129] Fig.26 It is a cross-sectional schematic diagram of the self-locking lotion pump of the lotion bottle in the above preferred embodiment of the utility model in another direction when in a released state.

[0130] Fig. 27 It is a schematic diagram of the partial structure of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the utility model, which describes the structural relationship between a fixing part, a locking part and an adjusting part of a locking unit of the self-locking lotion pump.

[0131] Fig.28 It is a partial structural schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the present utility model when switching from a self-locking state to a released state, which shows a first positional relationship between the fixing part, the locking part and the adjusting part of the locking unit of the self-locking lotion pump.

[0132] Fig.29 1 is a partial structural schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the present utility model when switching from a self-locking state to a released state, which shows the second positional relationship between the fixing part, the locking part and the adjusting part of the locking unit of the self-locking lotion pump.

[0133] Fig.30 1 is a partial structural diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the present utility model when switching from a self-locking state to a released state, which shows the third positional relationship between the fixing part, the locking part and the adjusting part of the locking unit of the self-locking lotion pump.

[0134] Fig.31 1 is a partial structural schematic diagram of the self-locking lotion pump of the lotion bottle according to the above preferred embodiment of the present utility model when switching from a self-locking state to a released state, which shows the fourth positional relationship between the fixing part, the locking part and the adjusting part of the locking unit of the self-locking lotion pump.

[0135] Fig.32 It is a three-dimensional schematic diagram of a spray pump according to the third preferred embodiment of the utility model.

[0136] Fig.33 It is an exploded schematic diagram of the spray pump according to the above preferred embodiment of the utility model.

[0137] Fig.34 It is a three-dimensional cross-sectional schematic diagram of the spray pump according to the above preferred embodiment of the utility model.

[0138] Fig.35 yes Fig.34 A magnified view of the local location.

[0139] Fig.36 It is a cross-sectional schematic diagram of one direction of the spray pump according to the above preferred embodiment of the utility model.

[0140] Fig.37 yes Fig.36 A magnified view of the local location.

[0141] Fig.38 It is a cross-sectional schematic diagram of the spray pump according to the above preferred embodiment of the utility model in another direction.

[0142] Fig.39 yes Fig.38 A magnified view of the local location.

[0143] Fig.40It is a three-dimensional schematic diagram at one angle of a plastic spring of the spray pump according to the above preferred embodiment of the utility model.

[0144] Fig.41 It is a three-dimensional schematic diagram of the plastic spring of the spray pump according to the above preferred embodiment of the utility model from another angle.

[0145] Fig.42 and Fig.43 It is a cross-sectional schematic diagram in different directions of the first state of the spray pump according to the above preferred embodiment of the utility model.

[0146] Fig.44 and Fig.45 It is a cross-sectional schematic diagram in different directions of the second state of the spray pump according to the above preferred embodiment of the utility model.

[0147] Fig.46 and Fig.47 It is a cross-sectional schematic diagram in different directions of the third state of the spray pump according to the above preferred embodiment of the utility model.

[0148] Fig.48 and Fig.49 It is a cross-sectional schematic diagram in different directions of the fourth state of the spray pump according to the above preferred embodiment of the utility model.

[0149] Fig.50 and Fig.51 It is a cross-sectional schematic diagram in different directions of the fifth state of the spray pump according to the above preferred embodiment of the utility model.

[0150] Fig.52 It is a three-dimensional schematic diagram from one viewing angle of a lotion pump according to the fourth preferred embodiment of the utility model.

[0151] Fig.53 It is a three-dimensional schematic diagram of the lotion pump according to the above preferred embodiment of the utility model from another viewing angle.

[0152] Fig.54 It is a schematic exploded view of the lotion pump according to the preferred embodiment of the present utility model from one perspective.

[0153] Fig.55 It is a schematic exploded view of the lotion pump according to the preferred embodiment of the present invention from another perspective.

[0154] Fig.56 It is an exploded schematic diagram of the lotion pump according to the above preferred embodiment of the utility model.

[0155] Fig.57It is a cross-sectional schematic diagram of a specific usage state of the lotion pump according to the above preferred embodiment of the utility model.

[0156] Fig.58 It is a front view schematic diagram of a plastic spring of the lotion pump according to the above preferred embodiment of the utility model.

[0157] Fig.59 It is a three-dimensional schematic diagram from one viewing angle of the plastic spring of the lotion pump according to the above preferred embodiment of the utility model.

[0158] Fig.60 yes Fig.59 An enlarged schematic diagram of a local location.

[0159] Fig.61 yes Fig.59 An enlarged schematic diagram of another specific location.

[0160] Fig.62 It is a three-dimensional schematic diagram of the plastic spring of the lotion pump according to the above preferred embodiment of the present utility model from another perspective.

[0161] Fig.63 yes Fig.62 An enlarged schematic diagram of a local location.

[0162] Fig.64 yes Fig.62 An enlarged schematic diagram of another specific location.

[0163] Fig.65 It is a schematic diagram of the changing state of the plastic spring of the lotion pump according to the above preferred embodiment of the utility model when being squeezed.

[0164] Fig.66 It is a cross-sectional schematic diagram of one process of the lotion pump pumping lotion according to the above preferred embodiment of the utility model.

[0165] Fig.67 It is a cross-sectional schematic diagram of the second process of the lotion pump pumping lotion according to the above preferred embodiment of the utility model.

[0166] Fig.68 It is a cross-sectional schematic diagram of the third process of the lotion pump pumping lotion according to the above preferred embodiment of the utility model.

[0167] Fig.69 It is a cross-sectional schematic diagram of the fourth process of the lotion pump pumping lotion according to the above preferred embodiment of the utility model.

[0168] Fig.70It is a cross-sectional schematic diagram of the fifth process of the lotion pump pumping lotion according to the above preferred embodiment of the utility model.

[0169] Fig.71 It is a front view schematic diagram of another plastic spring of the lotion pump according to the above preferred embodiment of the utility model.

[0170] Fig.72 It is a three-dimensional schematic diagram from one viewing angle of the plastic spring of the lotion pump according to the above preferred embodiment of the utility model.

[0171] Fig.73 It is a three-dimensional schematic diagram of the plastic spring of the lotion pump according to the above preferred embodiment of the present utility model from another perspective.

[0172] Fig.74 yes Fig.73 An enlarged schematic diagram of one location.

[0173] Fig.75 yes Fig.73 An enlarged schematic diagram of another position.

[0174] Fig.76 yes Fig.73 An enlarged schematic diagram of another position.

[0175] Fig.77 It is a three-dimensional schematic diagram of another plastic spring of the lotion pump according to the above preferred embodiment of the utility model.

[0176] Fig.78 It is a three-dimensional schematic diagram from one viewing angle of the plastic spring of the lotion pump according to the above preferred embodiment of the utility model.

[0177] Fig.79 It is a three-dimensional schematic diagram of the plastic spring of the lotion pump according to the above preferred embodiment of the present utility model from another perspective. DETAILED DESCRIPTION

[0178] Before describing in detail any embodiment of the utility model, it should be understood that the utility model is not limited to the construction and arrangement details of the components described below or illustrated in the following figures in its application. The utility model 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", "comprising" 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.

[0179] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 elements may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0180] like Figures 1 to 4 As shown, the first embodiment of the utility model discloses a pump core structure using a plastic spring, which includes a pump body 1, a spiral coil 2, a head cap 3, a connecting seat 4, a piston rod 5 and a plastic spring 6. The pump body 1 has a hollow pump chamber 11, a liquid inlet 12 is provided at the bottom, and an opening is provided at the top, and the liquid inlet 12 and the opening are connected to the pump chamber 11 at the bottom and the top of the pump body 1 respectively. The spiral coil 2 is connected to the top of the pump body 1 and has an opening 21 that passes through the top and bottom corresponding to the opening of the pump body 1. The lower part of the head cap 3 passes through the opening 21 of the spiral coil 2 and is guided and matched with the opening 21, and a guide sleeve 31 extending vertically is provided in the head cap 3.

[0181] The connecting seat 4 is arranged in the pump cavity 11 of the pump body 10 and has an assembly opening 41 which runs through from top to bottom in the middle. The connecting seat 4, the pump cavity 11 above it, and the inner cavity of the head cap 3 together enclose an assembly cavity 100. The piston rod 5 is arranged in the pump cavity 11 of the pump body 10 so as to be movable up and down. The upper end of the piston rod 5 is connected to the guide sleeve 31 of the head cap 3, and the lower end is arranged through the assembly opening 41 of the connecting seat 4. The plastic spring 6 is arranged in the assembly cavity 100. The plastic spring 6 is sleeved on the outer periphery of the piston rod 5 and the guide sleeve 31, and the upper end of the plastic spring 6 abuts against the inner top wall of the head cap 3, and the lower end abuts against the upper surface of the connecting seat 4.

[0182] In this embodiment, the upper end of the piston rod 5 is plugged and connected with the lower end of the guide sleeve 31. When assembled, the diameter difference between the outer peripheral wall of the piston rod 5 and the outer peripheral wall of the guide sleeve 31 is within 0 mm to 6 mm. In this embodiment, by limiting the diameter difference between the outer peripheral wall of the piston rod 5 and the outer peripheral wall of the guide sleeve 31, the gap between the two and the inner wall of the plastic spring 6 is basically consistent, so as to better constrain the deformation of the plastic spring 6 and make the deformation of the plastic spring 6 more regular, so as to further improve the stability of the pump core structure using the plastic spring.

[0183] In this embodiment, an inserting portion 51 is disposed at the upper end of the piston rod 5 , and the inserting portion 51 is inserted into the guide sleeve 31 .

[0184] The diameter of the outer peripheral wall of the piston rod 5 is smaller than the diameter of the outer peripheral wall of the guide sleeve 31, and the outer peripheral wall of the piston rod 5 is provided with support ribs 52 extending in the axial direction for radially supporting the plastic spring 6. This structure can further support the plastic spring 6 in the radial direction with a smaller area, which can not only play the role of supporting the plastic spring 6, but also does not affect the uniformity of the support of the piston rod 5 and the guide sleeve 31 as a whole for the plastic spring 6 due to the small support area, so that the deformation of the plastic spring 6 is more regular.

[0185] In the present embodiment, the guide ring 22 extending in the axial direction is provided at the opening 21 of the spiral coil 2. When assembled, the inner circumferential surface of the guide ring 22 is roughly aligned with the inner circumferential surface of the upper part of the pump chamber 11 of the pump body 10, thereby forming a guide surface 200 that cooperates with the outer circumferential wall of the head cap 3. This structure is conducive to improving the stability of the up and down movement of the head cap 3. The spacing between the outer circumferential wall of the lower part of the head cap 3 and the guide surface 200 is between 0.05mm and 0.4mm. Since the length of the plastic spring 6 of the present embodiment can be made larger, it is understandable that the larger the size of the plastic spring 6 that exists alone, the easier it is to swing and skew. The utility model adopts the above-mentioned structure, which can cooperate with the supporting effect of the piston rod 5 to reduce the swing and skew of the plastic spring 6 and control the skew angle of the plastic spring 6 within 1° on a single side.

[0186] The lower end of the piston rod 5 of this embodiment is connected to a piston seat 7 and a piston 8 for controlling whether the fluid of the piston seat 7 is conductive or not, that is, the pump core structure with plastic spring of the utility model further includes the piston seat 7 and the piston 8, wherein the top of an outer ring 81 of the piston 8 is sealed with the inner wall surface of the pump chamber 11 of the pump body 10, and the top of an inner ring 82 of the piston 8 is sealed with the lower end of the piston rod 5. The piston seat 7 has a flow channel 71 in an inverted T shape, and the bottom of the piston seat 7 is provided with a support ring 72 located below the transverse part of the T-shaped flow channel 71, and the inner ring 82 of the piston 8 is sleeved on the periphery of the piston seat 7 and the lower end is against or separated from the top surface of the support ring 72. The lower end of the piston rod 5 is provided with a matching sleeve 53 expanding outward, and the top edge of the inner ring 82 of the piston 8 is sealed with the inner wall of the matching sleeve 53. The above structure is beneficial to improving the sealing performance of the pump core structure with the plastic spring, reducing air flow loss, and improving the efficiency of the pump core structure with the plastic spring.

[0187] A convex block 54 is arranged on the outer peripheral wall of the lower part of the piston rod 5, and correspondingly, a notch 42 for the convex block 54 to pass through and a boss 43 capable of abutting against the convex block 54 are arranged adjacently on the inner peripheral wall of the assembly opening 41 of the connection seat 4. With this structure, the position of the piston rod 5 can be locked by rotating the head cap 3. When the convex block 54 of the piston rod 5 abuts against the boss 43, the head cap 3 cannot be pressed down. When the convex block 54 of the piston rod 5 corresponds to the notch 42, the head cap 3 can be pressed down normally, thereby playing a role in avoiding misoperation.

[0188] This embodiment utilizes the head cap 3 and the upper part of the pump body 1 to enclose the assembly cavity 100 which is more closely matched with the periphery of the plastic spring 6 in the vertical direction, and at the same time utilizes the piston rod 5 to guide and support the inner side of the plastic spring 6, so as to better restrain the deformation of the plastic spring 6 and make the deformation of the plastic spring 6 more regular, so as to improve the stability of the up and down movement of the head cap 3.

[0189] Refer to the attached drawings of the specification of this utility model Figure 5 and Figure 6 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 self-locking lotion pump 100A and a bottle body 200A, wherein the self-locking lotion pump 100A is installed on the bottle body 200A, wherein the self-locking lotion pump 100A is used to pump fluid from the bottle body 200A.

[0190] Attached Figures 7 to 20 The first specific example of the self-locking lotion pump 100A is shown, wherein the self-locking lotion pump 100A includes a pump body 10A, a valve 20A, a liquid taking unit 30A, a locking unit 40A and a spring 50A.

[0191] Specifically, the pump body 10A has a pump body space 11A and a liquid inlet channel 12A and a top opening 13A respectively connected to the pump body space 11A. The valve 20A is constructed to be able to open or close the liquid inlet channel 12A of the pump body 10A. The liquid extraction unit 30A includes a connecting rod 31A, an assembly seat 32A and a piston 33A and has a fluid channel 34A. The connecting rod 31A has a rod channel 311A. The assembly seat 32A is assembled at the bottom of the connecting rod 31A. The fluid channel 34A is formed between the connecting rod 31A and the assembly seat 32A, and the fluid channel 34A is connected to the rod channel 311A. The piston 33A is movably mounted on the connecting rod 31A. The bottom of the connecting rod 31A, wherein the bottom of the liquid taking unit 30A is movably installed in the pump body space 11A of the pump body 10A in a manner that the peripheral wall of the piston 33A and the inner wall of the pump body 10A are in contact with each other, and the self-locking lotion pump 100A forms a pump chamber 60A between the liquid taking unit 30A and the pump body 10A, and the piston 33A is configured to allow or prevent the fluid channel 34A of the liquid taking unit 30A from being connected to the pump chamber 60A. The locking unit 40A includes a locking portion 41A and an adjusting portion 42A, wherein the locking portion 41A is located in the pump body space 11A of the pump body 10A, and the locking portion 41A is configured to remain unchanged relative to the height position of the pump body 10A, the adjusting portion 42A is movably mounted on the middle of the connecting rod 31A and can be locked at different height positions of the locking portion 41A, and the adjusting portion 42A is configured to limit the maximum distance of the upward movement of the connecting rod 31A. The bottom of the spring 50A abuts against the adjusting portion 42A, and the top of the spring 50A abuts against the top of the connecting rod 31A.

[0192] When the adjustment portion 42A is locked at the lower position of the locking portion 41A, the self-locking lotion pump 100A is in a locked state, and the liquid taking unit 30A is prevented from being pressed, so as to prevent the self-locking lotion pump 100A from being pressed by mistake and causing the lotion bottle to leak. When the adjustment portion 42A is locked at the higher position of the locking portion 41A, the self-locking lotion pump 100A is in a released state, and the liquid taking unit 30A is allowed to be pressed to take liquid from the bottle body 200A.

[0193] Specifically, the locking unit 40A has a first locking position and a second locking position. By changing the locking positions of the adjusting portion 42A and the locking portion 41A, the locking unit 40A switches between the first locking position and the second locking position. When the locking unit 40A is in the first locking position, the peripheral wall of the assembly seat 32A is attached to the inner wall of the pump body 10A. Figure 5 , Fig.11 and Fig.12 At this time, the self-locking lotion pump 100A is in the locked state, and the liquid taking unit 30A is prevented from being pressed, so as to prevent the self-locking lotion pump 100A from being pressed by mistake and causing the lotion bottle to leak. When the locking unit 40A is in the second locking position, the peripheral wall of the assembly seat 32A is away from the inner wall of the pump body 10A. Figure 6 , Fig.13 and Fig.14 At this time, the self-locking lotion pump 100A is in the released state, and the liquid taking unit 30A is allowed to be pressed to take liquid from the bottle 200A. That is, by changing the locking positions of the adjustment part 42A and the locking part 41A, the self-locking lotion pump 100A switches between the locked state and the released state.

[0194] It is understandable that further reference is made to the attached Figure 5 , Fig.11 and Fig.12 When the locking unit 40A is in the first locking position, the pump chamber 60A of the self-locking lotion pump 100A has a minimum volume or tends to have a minimum volume. At this time, the self-locking lotion pump 100A is in the locked state, and the liquid extraction unit 30A is prevented from being pressed, so as to avoid the self-locking lotion pump 100A being pressed by mistake and causing the lotion bottle to leak. Figure 6 , Fig.13 and Fig.14 When the locking unit 40A is in the second locking position, the pump chamber 60A of the self-locking lotion pump 100A has a maximum volume or tends to have a maximum volume. At this time, the self-locking lotion pump 100A is in the released state, and the liquid taking unit 30A is allowed to be pressed to take liquid from the bottle body 200A.

[0195] Now go to the attached Fig.11 and Fig.12 , and combined with the attached Figure 5The locking unit 40A in the first locking position prevents the liquid taking unit 30A from being pressed, so that no matter when the lotion bottle is transported or carried, even if the liquid taking unit 30A is subjected to force, the fluid in the pump chamber 60A of the self-locking lotion pump 100A and the bottle body 200A will not be discharged through the fluid channel 34A of the liquid taking unit 30A and the rod channel 311A ​​of the connecting rod 31A. The locking unit 40A in the first locking position enables the peripheral wall of the assembly seat 32A of the liquid taking unit 30A to reliably fit the inner wall of the pump body 10A, so that no matter when the lotion bottle is transported or carried, even if the lotion bottle falls over, the fluid in the pump chamber 60A and the bottle body 200A of the self-locking lotion pump 100A will not be discharged through the fluid channel 34A of the liquid taking unit 30A and the rod channel 311A ​​of the connecting rod 31A. The locking unit 40A in the first locking position reduces the height dimension of the self-locking lotion pump 100A, thereby reducing the height dimension of the lotion bottle, thereby reducing the space occupied by the lotion bottle, which is conducive to reducing the storage cost and transportation cost of the lotion bottle. The spring 50A is located between the top of the connecting rod 31A and the adjusting portion 42A of the locking unit 40A, so that when the locking unit 40A is in the first locking position, the self-locking lotion pump 100A can prevent the spring 50A from being over-compressed, thereby ensuring the elasticity of the spring 50A and improving the reliability of the self-locking lotion pump 100A.

[0196] In particular, it is particularly important for the spring 50A to be made of plastic material to prevent the spring 50A from being over-compressed when the locking unit 40A is in the first locking position by arranging the spring 50A between the top of the connecting rod 31A and the adjusting portion 42A. In other words, in some specific examples of the present invention, the spring 50A is a plastic spring, and the present invention will further disclose the specific structure of the spring 50A made of plastic material in the following.

[0197] Now go to the attached Fig.13 and Fig.14 , and combined with the attached Figure 6The locking unit 40A in the second locking position allows the liquid taking unit 30A to be pressed. When the liquid taking unit 30A is pressed downward, the pump chamber 60A of the self-locking lotion pump 100A is compressed, and the piston 33A allows the fluid channel 34A of the liquid taking unit 30A to communicate with the pump chamber 60A of the self-locking lotion pump 100A, so as to allow the fluid in the pump chamber 60A of the self-locking lotion pump 100A to be discharged through the fluid channel 34A of the liquid taking unit 30A and the rod channel 311A ​​of the connecting rod 31A. It can be understood that when the liquid taking unit 30A is pressed downward, the spring 50A is compressed by the connecting rod 31A in a direction close to the adjusting portion 42A to generate elastic deformation for accumulating elastic potential energy. When the pressure applied to the liquid taking unit 30A is removed, the spring 50A pushes the connecting rod 31A upward in the process of restoring the initial state, so that the connecting rod 31A returns to its initial position.

[0198] Continue to refer to the attached Figures 7 to 20 , and combined with the attached Figure 5 and Figure 6 The valve 20A further comprises a valve disc 21A, a mounting ring 22A surrounding the valve disc 21A, and at least one deformable connecting arm 23A integrally connecting the valve disc 21A and the mounting ring 22A, wherein the mounting ring 22A is fixedly mounted on the pump body space 11A of the pump body 10A, and the connecting arm 23A suspends the valve disc 21A at a position closing the liquid inlet channel 12A of the pump body 10A. It can be understood that when the valve disc 21A moves upward to open the liquid inlet channel 12A of the pump body 10A, the valve disc 21A pulls the connecting arm 23A upward, causing the connecting arm 23A to deform in the height direction and accumulate elastic potential energy, so that the connecting arm 23A can subsequently pull the valve disc 21A back to the position closing the liquid inlet channel 12A of the pump body 10A.

[0199] In this specific example of the self-locking lotion pump 100A of the present invention, the connecting arm 23A has at least one bend between the valve plate 21A and the mounting ring 22A, so as to allow the valve plate 21A to pull the connecting arm 23A to deform in the height direction when the valve plate 21A moves upward, thereby increasing the stroke of the valve plate 21A. Specifically, one end of the connecting arm 23A is connected to one side of the valve plate 21A, and the other end of the connecting arm 23A is connected to the non-corresponding side of the mounting ring 22A, so that the connecting arm 23A has at least one bend between the valve plate 21A and the mounting ring 22A, thereby increasing the stroke of the valve plate 21A in the height direction.

[0200] It is worth mentioning that the number of the connecting arms 23A of the valve 20A is not limited in the self-locking lotion pump 100A of the present invention. Figures 7 to 20 In the specific example of the self-locking lotion pump 100A of the present invention, the valve 20A includes three connecting arms 23A, and the three connecting arms 23A are centrally symmetrically distributed between the valve plate 21A and the mounting ring 22A.

[0201] It is also worth mentioning that the way in which the mounting ring 22A of the valve 20A is fixedly mounted in the pump body space 11A of the pump body 10A is not limited in the self-locking lotion pump 100A of the present invention. Figures 7 to 20 In the specific example of the self-locking lotion pump 100A shown, the shape and size of the outer wall of the mounting ring 22A match the shape and size of the inner wall of the pump body 10A. After the mounting ring 22A is inserted into the pump body space 11A of the pump body 10A from the top opening 13A of the pump body 10A, the valve 20A can be fixedly mounted in the pump body space 11A of the pump body 10A based on the friction force generated between the outer wall of the mounting ring 22A and the inner wall of the pump body 10A.

[0202] Optionally, in other examples of the self-locking lotion pump 100A of the present invention, the valve 20A may be a ball valve, which opens the liquid inlet channel 12A of the pump body 10A by moving upward as a whole.

[0203] Continue to refer to the attached Figures 7 to 20 , and combined with the attached Figure 5 and Figure 6 The liquid taking unit 30A further includes a head cap 35A, and the head cap 35A has a head cap channel 351A, wherein the head cap 35A is installed on the top of the connecting rod 31A, and the head cap channel 351A of the head cap 35A is connected with the rod body channel 311A ​​of the connecting rod 31A, so that when the liquid taking unit 30A is pressed downward, the fluid located in the pump chamber 60A of the self-locking lotion pump 100A is discharged through the fluid channel 34A of the liquid taking unit 30A, the rod body channel 311A ​​of the connecting rod 31A and the head cap channel 351A of the head cap 35A.

[0204] It is worth mentioning that the installation method of the head cap 35A and the connecting rod 31A is not limited in the self-locking lotion pump 100A of the present invention. For example, in this specific example of the self-locking lotion pump 100A of the present invention, refer to the attached Figures 9 to 14The bottom of the head cap 35A has a head cap column 352A, and the top of the connecting rod 31A has a column cavity 312A. Based on the friction generated between the head cap column 352A of the head cap 35A and the connecting rod 31A, the head cap column 352A of the head cap 35A is reliably installed in the column cavity 312A of the connecting rod 31A to install the head cap 35A on the top of the connecting rod 31A. Preferably, the top of the connecting rod 31A has two notches 313A, and the two notches 313A are symmetrically distributed on the opposite sides of the column cavity 312A of the connecting rod 31A, and the opposite sides of the head cap column 352A of the head cap 35A are respectively provided with a stopper 353A, and each of the stoppers 353A of the head cap 35A is respectively located in each of the notches 313A of the connecting rod 31A, so that when the head cap 35A is rotated, the head cap 35A can drive the connecting rod 31A to rotate synchronously.

[0205] The connecting rod 31A has a butt platform 314A, and the top of the piston 33A can butt against the butt platform 314A of the connecting rod 31A to allow the connecting rod 31A to drive the piston 33A to move downward. The assembly seat 32A includes a seat body portion 321A and an insertion portion 322A extending upward from the seat body portion 321A in one piece, the insertion portion 322A is inserted into the rod body channel 311A ​​of the connecting rod 31A, and the bottom of the piston 33A can butt against the seat body portion 321A, wherein when the bottom of the piston 33A butts against the seat body portion 321A, the piston 33A prevents the fluid channel 34A from being connected to the pump chamber 60A, and when the bottom of the piston 33A is away from the seat body portion 321A, the piston 33A allows the fluid channel 34A to be connected to the pump chamber 60A.

[0206] Specifically, the inner wall of the connecting rod 31A has a first hook 315A, and the insertion part 322A of the assembly seat 32A has at least one second hook 3221A and at least one extension groove 3222A, wherein after the insertion part 322A of the assembly seat 32A is inserted into the rod body channel 311A ​​of the connecting rod 31A, the second hook 3221A of the insertion part 322A and the first hook 315A of the connecting rod 31A are hooked with each other to allow the assembly seat 32A to be assembled at the bottom of the connecting rod 31A, and the extension groove 3222A of the assembly seat 32A forms the fluid channel 34A between the assembly seat 32A and the connecting rod 31A.

[0207] Continue to refer to the attached Figures 9 to 14The assembly seat 32A further includes a ring portion 323A, which integrally extends downward from the seat portion 321A, wherein the peripheral wall of the ring portion 323A can be attached to the inner wall of the pump body 10A. Specifically, when the locking unit 40A is in the first locking position and the self-locking lotion pump 100A is in the locking state, the peripheral wall of the ring portion 323A of the assembly seat 32A is attached to the inner wall of the pump body 10A to prevent the liquid taking unit 30A from being pressed and prevent the fluid in the pump chamber 60A of the self-locking lotion pump 100A from leaking. When the locking unit 40A is in the second locking position and the self-locking lotion pump 100A is in the releasing state, the peripheral wall of the ring portion 323A of the assembly seat 32A is away from the inner wall of the pump body 10A to allow the liquid taking unit 30A to be pressed to achieve liquid taking.

[0208] Continue to refer to the attached Figures 9 to 14 The connecting rod 31A further includes a rod body 316A and an extension arm 317A surrounding the top of the rod body 316A, the bottom of the extension arm 317A has at least one arm protrusion 3171A, the adjustment portion 42A has at least one movable groove 421A, the movable groove 421A extends along the height direction of the adjustment portion 42A, and the movable groove 421A does not extend to the top and bottom of the adjustment portion 42A, wherein the arm protrusion 3171A of the extension arm 317A of the connecting rod 31A is movably retained in the movable groove 421A of the adjustment portion 42A, so that the adjustment portion 42A is constructed to limit the maximum distance of upward movement of the connecting rod 31A. Specifically, in this specific example of the self-locking lotion pump 100A of the present invention, the bottom of the extension arm 317A of the connecting rod 31A has two symmetrically distributed arm protrusions 3171A, and accordingly, the adjusting portion 42A has two symmetrically distributed movable grooves 421A, and each of the arm protrusions 3171A of the extension arm 317A of the connecting rod 31A is respectively and movably retained in each of the movable grooves 421A of the adjusting portion 42A.

[0209] It can be understood that since the movable groove 421A of the adjusting portion 42A is designed not to extend to the top of the adjusting portion 42A, the arm protrusion 3171A of the extension arm 317A of the connecting rod 31A is prevented from upwardly detaching from the adjusting portion 42A, so that the adjusting portion 42A is constructed to limit the maximum distance of upward movement of the connecting rod 31A.

[0210] By movably setting the arm protrusion 3171A of the extension arm 317A of the connecting rod 31A in the movable groove 421A of the adjusting portion 42A, on the one hand, the self-locking lotion pump 100A enables the connecting rod 31A to move relative to the locking unit 40A in the height direction, and the maximum upward movement distance of the connecting rod 31A is limited by the adjusting portion 42A of the locking unit 40A; on the other hand, when the connecting rod 31A is rotated in the circumferential direction, the connecting rod 31A can drive the adjusting portion 42A to rotate, so as to change the locking positions of the adjusting portion 42A and the locking portion 41A, thereby changing the state of the self-locking lotion pump 100A.

[0211] Now go to the attached Figures 11 to 14 , and combined with the attached Figure 5 and Figure 6 , the connecting rod 31A forms a receiving chamber 318A between the rod body 316A and the extension arm 317A, the top of the spring 50A extends to the receiving chamber 318A of the connecting rod 31A, the adjusting portion 42A is tubular, which is sleeved on the middle part of the connecting rod 31A, and the bottom of the spring 50A extends to the inside of the adjusting portion 42A, so that the connecting rod 31A and the adjusting portion 42A cooperate with each other to hide the spring 50A, so that the spring 50A is visually invisible. In addition, the opposite ends of the spring respectively abut against the connecting rod 31A and the adjusting portion 42A, so that when the adjusting portion 42A is driven to rotate relative to the locking portion 41A, the spring 50A is stationary relative to the connecting rod 31A and the adjusting portion 42A, so as to avoid the spring 50A from being subjected to force and ensure the elasticity of the spring 50A.

[0212] Attached Fig. 9 and Fig.10The specific structure of the spring 50A is shown. The spring 50A further includes at least three extension legs 51A, each of which extends spirally around the central axis of the spring 50A, and each of which has a plurality of quadrilateral hollow parts 510A, which are distributed at intervals along the height direction of the extension leg 51A, and the side parts of adjacent extension legs 51A are integral. In this way, on the one hand, when the spring 50A is compressed, the extension legs 51A can be evenly stressed to prevent the spring 50A from tilting, and on the other hand, the entire height direction of the spring 50A can be compressed. On the one hand, the spring 50A can be compressed to increase the deformation of the spring 50A. On the other hand, when the spring 50A is compressed, it can prevent the extension legs 51A from expanding in all directions, that is, the deformation direction of the spring 50A is limited to the height direction to avoid the compressed spring 50A from scratching the inner wall of the pump body 10A and / or the connecting rod 31A, thereby ensuring the feel and smoothness of the user when pressing the head cap 35A of the liquid extraction unit 30A, and avoiding the compressed spring 50A from being stuck by the inner wall of the pump body 10A and / or the connecting rod 31A to cause failure, thereby improving the reliability of the self-locking lotion pump 100A.

[0213] Continue to refer to the attached Fig. 9 and Fig.10 , and combined with the attached Figure 5 , Figure 6 , Figures 11 to 14Each of the extension legs 51A of the plastic spring 50A includes a top connection portion 511A, a bottom connection portion 512A, two legs 513A and a plurality of traction portions 514A. The two legs 513A are arranged at intervals from each other. The opposite ends of the top connection portion 511A extend to and are connected to the tops of the two legs 513A, respectively. The opposite ends of the bottom connection portion 512A extend to and are connected to the bottoms of the two legs 513A, respectively. The opposite ends of these traction portions 514A extend to and are connected to different positions in the middle of the two legs 513A, respectively, so as to form the hollow portion 510A between the two adjacent traction portions 514A and the two legs 513A. The hollow portion 510A is formed between the uppermost traction portion 514A, the top connecting portion 511A and the two legs 513A, and the hollow portion 510A is formed between the lowermost traction portion 514A, the bottom connecting portion 512A and the two legs 513A of the traction portions 514A, wherein a leg 513A of one extension leg 51A and a leg 513A of an adjacent extension leg 51A are integral, so that each extension leg 51A of the spring 50A has a plurality of quadrilateral hollow portions 510A spaced apart along the height direction, so that the entire height direction of the spring 50A can be compressed, which is beneficial to increase the deformation of the spring 50A. When the spring 50A is compressed, the traction parts 514A of the extension leg 51A can pull the two legs 513A to limit the deformation direction of the legs 513A to the height direction of the spring 50A, thereby preventing the legs 513A from deforming laterally and further preventing the spring 50A from expanding in all directions.

[0214] Preferably, the thickness dimension of the traction portion 514A of the extension leg 51A is smaller than the thickness dimension of the leg portion 513A, so as to save materials to reduce the manufacturing cost of the spring 50A while ensuring that the traction portion 514A has the function of limiting the deformation direction of the spring 50A. In addition, when pressing the head cap 35A of the liquid taking unit 30A, the resistance provided by the traction portion 514A can be reduced, so that the user can smoothly press the liquid taking unit 30A.

[0215] Preferably, the hollow portion 510A formed between the two leg portions 513A and the two adjacent traction portions 514A of the extending leg 51A is a parallelogram structure, so that when the user presses the liquid extraction unit 30A, the spring 50A can be smoothly squeezed and deformed.

[0216] Continue to refer to the attached Fig. 9 and Fig.10 The top connecting parts 511A of the adjacent extension legs 51A of the spring 50A are integral and the top connecting parts 511A of these extension legs 51A form a circular ring structure, and the bottom connecting parts 512A of the adjacent extension legs 51A are integral and the bottom connecting parts 512A of these extension legs 51A form a circular ring structure, so that the spring 50A can be stably arranged between the connecting rod 31A and the adjusting part 42A to avoid lateral displacement of the spring 50A.

[0217] Continue to refer to the attached Figures 7 to 20 , and combined with the attached Figure 5 and Figure 6 In this specific example of the self-locking lotion pump 100A of the present invention, the locking portion 41A is fixedly mounted on the pump body 10A, and the locking unit 40A can be switched between the first locking position and the second locking position by driving the adjusting portion 42A to rotate relative to the locking portion 41A. Accordingly, the self-locking lotion pump 100A can be switched between the locking state and the release state. Optionally, in other examples of the self-locking lotion pump 100A of the present invention, the locking portion 41A is fixedly mounted on the pump body 10A, and the locking unit 40A can be switched between the first locking position and the second locking position by driving the adjusting portion 42A to slide relative to the locking portion 41A in the height direction.

[0218] Specifically, now turn to the attached Fig. 9 , Fig.10 , Figures 15 to 20The locking portion 41A has at least one first locking groove 411A, at least one second locking groove 412A and at least one sliding groove 413A. The first locking groove 411A and the second locking groove 412A are respectively located at different height positions of the locking portion 41A. The sliding groove 413A extends along the height direction of the locking portion 41A, and the bottom and top of the sliding groove 413A are respectively connected to the first locking groove 411A and the second locking groove 412A. The bottom of the adjusting portion 42A has at least one locking protrusion 422A. When the locking protrusion 422A of the adjusting portion 42A is locked in the first locking groove 411A of the locking portion 41A, the The locking unit 40A is in the first locking position to keep the self-locking lotion pump 100A in the locked state. When the locking protrusion 422A of the adjusting portion 42A is locked in the second locking groove 412A of the locking portion 41A, the locking unit 40A is in the second locking position to keep the self-locking lotion pump 100A in the released state. The locking protrusion 422A of the adjusting portion 42A can slide between the first locking groove 411A and the second locking groove 412A along the sliding groove 413A of the locking portion 41A to change the locking positions of the locking portion 41A and the adjusting portion 42A.

[0219] Specifically, when the locking protrusion 422A of the adjusting portion 42A is locked in the first locking groove 411A of the locking portion 41A, firstly, the adjusting portion 42A is driven to rotate relative to the locking portion 41A in the circumferential direction, so that the locking protrusion 422A of the adjusting portion 42A is disengaged from the first locking groove 411A of the locking portion 41A and enters the sliding groove 413A of the locking portion 41A; secondly, the adjusting portion 42A is driven to slide relative to the locking portion 41A in the height direction, so that the locking protrusion 422A of the adjusting portion 42A is disengaged from the first locking groove 411A corresponding to the locking portion 41A. The position of the first locking groove 411A slides to the position corresponding to the second locking groove 412A of the locking portion 41A, and again, the adjusting portion 42A is driven to rotate relative to the locking portion 41A in the circumferential direction, so that the locking protrusion 422A of the adjusting portion 42A enters the second locking groove 412A of the locking portion 41A from the sliding groove 413A of the locking portion 41A, so that the locking protrusion 422A of the adjusting portion 42A is locked in the second locking groove 412A of the locking portion 41A. At this time, the self-locking lotion pump 100A switches from the locked state to the released state.

[0220] Correspondingly, when the locking protrusion 422A of the adjusting portion 42A is locked in the second locking groove 412A of the locking portion 41A, firstly, the adjusting portion 42A is driven to rotate relative to the locking portion 41A in the circumferential direction so that the locking protrusion 422A of the adjusting portion 42A is disengaged from the second locking groove 412A of the locking portion 41A and enters the sliding groove 413A of the locking portion 41A, and secondly, the adjusting portion 42A is driven to slide relative to the locking portion 41A in the height direction so that the locking protrusion 422A of the adjusting portion 42A is disengaged from the second locking groove 412A corresponding to the locking portion 41A. The position of the second locking groove 412A slides to a position corresponding to the first locking groove 411A of the locking portion 41A, and again, the adjusting portion 42A is driven to rotate relative to the locking portion 41A in the circumferential direction, so that the locking protrusion 422A of the adjusting portion 42A enters the first locking groove 411A of the locking portion 41A from the sliding groove 413A of the locking portion 41A, so that the locking protrusion 422A of the adjusting portion 42A is locked in the first locking groove 411A of the locking portion 41A. At this time, the self-locking lotion pump 100A switches from the released state to the locked state.

[0221] It is worth mentioning that in some embodiments of the self-locking lotion pump 100A of the present invention, from a top view, the projections of the first locking groove 411A and the second locking groove 412A of the locking portion 41A on the same projection plane are misaligned, so that from a side view, the first locking groove 411A, the second locking groove 412A and the slide groove 413A of the locking portion 41A are in a "Z" shape. In some other embodiments of the self-locking lotion pump 100A of the present invention, from a top view, the projections of the first locking groove 411A and the second locking groove 412A of the locking portion 41A on the same projection plane overlap, so that from a side view, the first locking groove 411A, the second locking groove 412A and the slide groove 413A of the locking portion 41A are in a "[" or "]" shape. In this specific example of the self-locking lotion pump 100A of the present invention, refer to the attached Figures 15 to 20 The locking portion 41A is tubular and is sleeved on the outside of the adjusting portion 42A. Preferably, the locking portion 41A has two first locking grooves 411A, two second locking grooves 412A and two slide grooves 413A, the two first locking grooves 411A are symmetrical, the two second locking grooves 412A are symmetrical, and the two slide grooves 413A are symmetrical, wherein the adjusting portion 42A has two locking protrusions 422A, and the two locking protrusions 422A are symmetrical.

[0222] Reference Fig.11 , Fig.15 and Fig.17The distance between the locking protrusion 422A of the adjusting portion 42A and the central axis of the self-locking lotion pump 100A is greater than the distance between the inner wall of the locking portion 41A for defining the first locking groove 411A and the central axis of the self-locking lotion pump 100A. In this way, when no force is applied to the adjusting portion 42A or the force applied to the adjusting portion 42A is small, the locking protrusion 422A of the adjusting portion 42A can be reliably locked in the first locking groove 411A of the locking portion 41A, so that the locking unit 40A is reliably maintained in the first locking position, thereby making the self-locking lotion pump 100A reliably maintained in the locked state, which is convenient for the lotion bottle to be transported or carried.

[0223] Reference Fig.13 , Fig.16 and Fig. 20 , the distance between the locking protrusion 422A of the adjusting portion 42A and the central axis of the self-locking lotion pump 100A is less than or equal to the distance between the inner wall of the locking portion 41A for defining the second locking groove 412A and the central axis of the self-locking lotion pump 100A, wherein the locking portion 41A further has at least one blocking block 414A, which protrudes from the inner wall of the locking portion 41A for forming the second locking groove 412A, so as to block the end surface of the locking protrusion 422A of the adjusting portion 42A, so that when no force is applied to the adjusting portion 42A or the force applied to the adjusting portion 42A is small, the locking protrusion 422A of the adjusting portion 42A can be reliably locked in the second locking groove 412A of the locking portion 41A, so that the locking unit 40A is reliably maintained in the second locking position, thereby making the self-locking lotion pump 100A reliably maintained in the released state for pumping the fluid in the bottle 200A.

[0224] Reference Figures 11 to 20When the locking protrusion 422A of the adjusting portion 42A is locked in the first locking groove 411A of the locking portion 41A, the locking unit 40A is in the first locking position, and the self-locking lotion pump 100A is in the locked state. At this time, on the one hand, the peripheral wall of the ring body portion 323A of the assembly seat 32A is in contact with the inner wall of the pump body 10A, and the liquid taking unit 30A is prevented from being pressed, so as to avoid the self-locking lotion pump 100A from being mistakenly pressed and causing the lotion bottle to leak. On the other hand, the peripheral wall of the ring body portion 323A of the assembly seat 32A is in contact with the inner wall of the pump body 10A, so that even if the lotion bottle falls over, the self-locking lotion pump 100A is located in the position of the inner wall of the pump body 10A. On the other hand, the fluid in the pump chamber 60A of the self-locking lotion pump 100A will not be discharged through the fluid channel 34A of the liquid taking unit 30A, the rod channel 311A ​​of the connecting rod 31A and the head cap channel 351A of the head cap 35A. On the other hand, the self-locking lotion pump 100A has a lower height dimension to reduce the space occupied by the lotion bottle, which is helpful to reduce the storage cost and transportation cost of the lotion bottle. On the other hand, the spring 50A is located between the top of the connecting rod 31A and the pump body 10A. The self-locking lotion pump 100A can avoid the spring 50A from being over-compressed to ensure the elasticity of the spring 50A and improve the reliability of the self-locking lotion pump 100A.

[0225] When the head cap 35A of the liquid taking unit 30A is rotated, the head cap 35A drives the adjusting portion 42A to rotate synchronously through the connecting rod 31A, and the adjusting portion 42A rotates relative to the locking portion 41A in the circumferential direction, so that the locking protrusion 422A of the adjusting portion 42A is disengaged from the first locking groove 411A of the locking portion 41A and enters the sliding groove 413A of the locking portion 41A. In this process, the spring 50A is stationary relative to the connecting rod 31A and the adjusting portion 42A, so as to avoid the spring 50A being subjected to force and ensure the elasticity of the spring 50A. When the head cap 35A is pulled upward, the head cap 35A drives the adjustment part 42A to move upward synchronously through the connecting rod 31A, and the adjustment part 42A slides relative to the locking part 41A in the height direction, so that the locking protrusion 422A of the adjustment part 42A slides from the position corresponding to the first locking groove 411A of the locking part 41A to the position corresponding to the second locking groove 412A of the locking part 41A. When the head cap 35A is continuously rotated, the adjustment part 42A is driven to rotate relative to the locking part 41A in the circumferential direction, so that the locking protrusion 422A of the adjustment part 42A enters the second locking groove 412A of the locking part 41A from the sliding groove 413A of the locking part 41A, so that the locking protrusion 422A of the adjustment part 42A is locked in the second locking groove 412A of the locking part 41A, and at this time, the self-locking lotion pump 100A switches from the locked state to the released state.

[0226] Further, see Attachment Figures 7 to 14 , and combined with the attached Figure 5 and Figure 6 The self-locking lotion pump 100A further comprises a cap 70A having a cap through hole 71A, wherein the cap 70A is installed at the position of the top opening 13A of the pump body 10A in a manner that the connecting rod 31A is movably disposed in the cap through hole 71A of the cap 70A, and a distance between an inner wall of the cap 70A and the central axis of the self-locking lotion pump 100A is smaller than a distance between an outer wall of the locking portion 41A and the central axis of the self-locking lotion pump 100A, so as to prevent the locking portion 41A from moving relative to the pump body 10A in a height direction.

[0227] Further, please refer to the attached Figures 7 to 14 , and combined with the attached Figure 5 and Figure 6The self-locking lotion pump 100A further includes a screw cap 80A, the screw cap 80A includes a shoulder 81A and a screw thread 82A integrally extending downward from the shoulder 81A, the shoulder 81A has a shoulder through hole 811A, the top of the pump body 10A is assembled in the shoulder through hole 811A of the shoulder 81A, and the screw thread 82A can be screwed on the bottle mouth of the bottle body 200A to achieve the installation of the self-locking lotion pump 100A and the bottle body 200A.

[0228] The process of pumping fluid in the lotion bottle of the utility model is:

[0229] When the head cap 35A of the liquid taking unit 30A is pressed downward, on the one hand, the connecting rod 31A of the liquid taking unit 30A compresses the spring 50A in the direction of the adjusting portion 42A, so that the spring 50A is deformed and accumulates elastic potential energy. On the other hand, in the initial stage of pressing the head cap 35A, the position of the piston 33A in the pump body 10A remains unchanged, and the connecting rod 31A moves downward to the position where the abutment 314A of the connecting rod 31A abuts against the top of the piston 33A. At this time, the bottom of the piston 33A is away from the assembly seat 32A. The seat body portion 321A is pressed to allow the fluid channel 34A of the liquid taking unit 30A to communicate with the pump chamber 60A of the self-locking lotion pump 100A, and the head cap 35A is continuously pressed, and the connecting rod 31A drives the piston 33A to move downward to reduce the volume of the pump chamber 60A of the self-locking lotion pump 100A, and the fluid in the pump chamber 60A of the self-locking lotion pump 100A is compressed and discharged sequentially through the fluid channel 34A of the liquid taking unit 30A, the rod channel 311A ​​of the connecting rod 31A, and the head cap channel 351A of the head cap 35A. In this process, the valve 20A is kept in a state of closing the liquid inlet channel 12A of the pump body 10A.

[0230] When the pressure on the head cap 35A of the liquid taking unit 30A is abandoned, the spring 50A pushes the connecting rod 31A and the assembly seat 32A upward in the process of restoring the initial state. In the initial stage, the position of the piston 33A in the pump body 10A remains unchanged, and the connecting rod 31A and the assembly seat 32A move upward to the position where the bottom of the piston 33A abuts against the seat body portion 321A of the assembly seat 32A. At this time, the piston 33A prevents the fluid channel 34A of the liquid taking unit 30A from being connected to the pump chamber 60A of the self-locking lotion pump 100A. When the connecting rod 31A and the assembly seat 32A continue to move upward, the assembly seat 32A drives the piston 33A to move upward. It can be understood that, as the piston 33A moves upward, the volume of the pump chamber 60A of the self-locking lotion pump 100A increases, causing the pressure of the pump chamber 60A to be lower than the pressure of the bottle 200A. At this time, the valve 20A opens the liquid inlet passage 12A of the pump body 10A to allow the fluid in the bottle 200A to be replenished into the pump chamber 60A of the self-locking lotion pump 100A. When the pressure of the pump chamber 60A of the self-locking lotion pump 100A is balanced with the pressure of the bottle 200A, the valve 20A is maintained in a state of closing the pump body 10A and the liquid inlet passage 12A.

[0231] Attached Figure 21 to Figure 31 The second specific example of the self-locking lotion pump 100A of the present invention is shown. Figures 7 to 20The self-locking lotion pump 100A shown in the figure is different in the specific structure of the locking unit 40A. Specifically, the locking unit 40A further includes a fixing portion 43A, the fixing portion 43A is fixedly mounted in the pump body space 11A of the pump body 10A, the fixing portion 43A has a fixing cavity 431A and a guide groove 432A connected to the fixing cavity 431A, the guide groove 432A extends in a spiral manner along the height direction of the fixing portion 43A, wherein the locking portion 41A is rotatably mounted in the fixing cavity 431A of the fixing portion 43A, the first locking groove 411A and the second locking groove 412A of the locking portion 41A correspond to different height positions of the guide groove 432A of the fixing portion 43A, and the locking protrusion 422 of the adjusting portion 42A is provided. A extends to the guide groove 432A of the fixing portion 43A after passing through the first locking groove 411A, the second locking groove 412A or the sliding groove 413A of the locking portion 41A, wherein when the locking protrusion 422A of the adjusting portion 42A is locked in the first locking groove 411A of the locking portion 41A, the locking unit 40A is in the first locking position, so that the self-locking lotion pump 100A is maintained in the locked state, and correspondingly, when the locking protrusion 422A of the adjusting portion 42A is locked in the second locking groove 412A of the locking portion 41A, the locking unit 40A is in the second locking position, so that the self-locking lotion pump 100A is maintained in the released state.

[0232] Reference Figures 21 to 31When the locking protrusion 422A of the adjusting portion 42A is locked in the first locking groove 411A of the locking portion 41A, the locking unit 40A is in the first locking position, and the self-locking lotion pump 100A is in the locked state. At this time, on the one hand, the peripheral wall of the ring body portion 323A of the assembly seat 32A is in contact with the inner wall of the pump body 10A, and the liquid taking unit 30A is prevented from being pressed, so as to avoid the self-locking lotion pump 100A from being mistakenly pressed and causing the lotion bottle to leak. On the other hand, the peripheral wall of the ring body portion 323A of the assembly seat 32A is in contact with the inner wall of the pump body 10A, so that even if the lotion bottle falls over, the self-locking lotion pump 100A is located in the position of the inner wall of the pump body 10A. On the other hand, the fluid in the pump chamber 60A of the self-locking lotion pump 100A will not be discharged through the fluid channel 34A of the liquid taking unit 30A, the rod channel 311A ​​of the connecting rod 31A and the head cap channel 351A of the head cap 35A. On the other hand, the self-locking lotion pump 100A has a lower height dimension to reduce the space occupied by the lotion bottle, which is helpful to reduce the storage cost and transportation cost of the lotion bottle. On the other hand, the spring 50A is located between the top of the connecting rod 31A and the pump body 10A. The self-locking lotion pump 100A can avoid the spring 50A from being over-compressed to ensure the elasticity of the spring 50A and improve the reliability of the self-locking lotion pump 100A.

[0233] When the head cap 35A of the liquid taking unit 30A is rotated, the head cap 35A drives the adjusting portion 42A to rotate synchronously through the connecting rod 31A, and the adjusting portion 42A rotates relative to the locking portion 41A in the circumferential direction, so that the locking protrusion 422A of the adjusting portion 42A is disengaged from the first locking groove 411A of the locking portion 41A and enters the sliding groove 413A of the locking portion 41A. In this process, the spring 50A is stationary relative to the connecting rod 31A and the adjusting portion 42A, so as to avoid the spring 50A being subjected to force and ensure the elasticity of the spring 50A. Next, continue to rotate the head cap 35A of the liquid extraction unit 30A, and the head cap 35A drives the locking part 41A to rotate in the fixed cavity 431A of the fixed part 43A through the connecting rod 31A and the adjusting part 42A, and the adjusting part 42A is allowed to slide in the height direction relative to the locking part 41A, so that the locking protrusion 422A of the adjusting part 42A slides from the position corresponding to the first locking groove 411A of the locking part 41A to the position corresponding to the second locking groove 412A of the locking part 41A. Finally, continue to rotate the head cap 35A of the liquid collection unit 30A, and the head cap 35A drives the adjusting part 42A to rotate relative to the locking part 41A through the connecting rod 31A, so that the locking protrusion 422A of the adjusting part 42A enters the second locking groove 412A of the locking part 41A from the sliding groove 413A of the locking part 41A, so that the locking protrusion 422A of the adjusting part 42A is locked in the second locking groove 412A of the locking part 41A. At this time, the self-locking lotion pump 100A switches from the locked state to the released state.

[0234] Refer to the attached drawings of the specification of this utility model Figure 32 to Figure 51 A spray pump 1000' according to the third preferred embodiment of the utility model will be disclosed and explained in the following description, wherein the spray pump 1000' is installed in a packaging container 2000' to form a spray packaging device, wherein the spray pump 1000' can pump fluid from the packaging container 2000' and atomize the fluid and then spray it out, wherein the spray pump 1000' includes a pump body 10', a head cap 20', an atomizing nozzle 30', a piston 40', a valve 50', a spring 60' and a liquid taking part 70'.

[0235] Specifically, the pump body 10' has a pump body space 11' and a liquid inlet channel 12' connected to the pump body space 11'. The head cap 20' has a head cap channel 21', and the atomizing nozzle 30' is installed at the outlet of the head cap channel 21' of the head cap 20'. The piston 40' has a piston channel 41', wherein the top of the piston 40' is installed on the head cap 20', and the piston channel 41' of the piston 40' is connected to the head cap channel 21' of the head cap 20', wherein the bottom of the piston 40' is movably arranged in the pump body space 11' of the pump body 10' in a manner that the outer wall of the piston 40' and the inner wall of the pump body 10' are in contact with each other, so as to form a pump chamber 80' with a variable space between the bottom of the piston 40' and the pump body 10'. The valve 50' is constructed to allow or prevent the liquid inlet channel 12' of the pump body 10' from being connected to the pump chamber 80'. The spring 60' is constructed so that the relative position of the bottom of the spring 60' and the pump body 10' remains unchanged and the top of the spring 60' abuts against the head cap 20'. The liquid extraction portion 70' is installed on the piston 40', and the liquid extraction portion 70' is located in the pump chamber 80', the liquid extraction portion 70' has an open state and a closed state, and the liquid extraction portion 70' can switch between the open state and the closed state, wherein when the head cap 20' is pressed, the liquid extraction portion 70' can automatically switch from the closed state to the open state, at this time, the pump chamber 80' of the spray pump 1000' is connected to the piston channel 41' of the piston 40' through the liquid extraction portion 70', and the fluid in the pump chamber 80' is allowed to flow. The liquid enters the piston channel 41' of the piston 40' and the head cap channel 21' of the head cap 20' through the liquid intake portion 70', and is sprayed out of the atomization packaging device after being atomized by the atomization nozzle 30', wherein when the pressure applied to the head cap 20' is removed, the liquid intake portion 70' automatically switches from the open state to the closed state. At this time, the liquid intake portion 70' blocks the pump chamber 80' and the piston channel 41' of the piston 40', and the fluid in the pump chamber 80' is prevented from entering the piston channel 41' of the piston 40' through the liquid intake portion 70'.

[0236] Reference Fig.34 , Fig.36 and Fig.38In this specific example of the spray pump 1000' of the utility model, the valve 50' is a ball valve, which is movably arranged at the bottom of the pump body space 11' of the pump body 10', wherein the valve 50' allows or prevents the liquid inlet channel 12' of the pump body 10' from being connected to the pump chamber 80' by moving. Optionally, in other examples of the spray pump 1000' of the utility model, the valve 50' is a diaphragm valve, which is deformably arranged at the bottom of the pump body space 11' of the pump body 10', wherein the valve 50' allows or prevents the liquid inlet channel 12' of the pump body 10' from being connected to the pump chamber 80' by deforming.

[0237] Continue to refer to the attached Fig.34 , Fig.36 and Fig.38 In this specific example of the spray pump 1000' of the present invention, the spray pump 1000' further includes a spring seat 90', which surrounds the middle part of the piston 40' and is fixedly installed in the pump body space 11' of the pump body 10'. The bottom of the spring 60' abuts against the spring seat 90', so that the spring 60' is constructed so that the relative position of the bottom of the spring 60' and the pump body 10' remains unchanged.

[0238] In the spray pump 1000' of the utility model, the spring seat 90' further has the function of preventing the piston 40' from being separated from the pump body space 11' of the pump body 10'. Specifically, the spring seat 90' has a seat body through hole 91', the piston 40' includes a piston body 42' and a connecting rod 43' extending upward from the piston body 42', the piston channel 41' passes through the piston body 42' and the connecting rod 43', wherein the inner diameter of the seat body through hole 91' of the spring seat 90' is larger than the outer diameter of the connecting rod 43' and smaller than the outer diameter of the piston body 42', and the top of the connecting rod 43' extends to the top of the spring seat 90' after passing through the seat body through hole 91' of the spring seat 90' and is installed on the head cap 20', so that the spring seat 90' can prevent the piston 40' from being separated from the pump body space 11' of the pump body 10'. Optionally, in other examples of the spray pump 1000 ′ of the present invention, the piston body 42 ′ and the connecting rod 43 ′ of the piston 40 ′ are separate, wherein the piston body 42 ′ is installed at the bottom of the connecting rod 43 ′.

[0239] Now go to the attached Figure 34 to Figure 39The liquid extraction portion 70' further includes a liquid extraction shell 71', a flow control element 72' and a deformable support column 73', wherein the liquid extraction shell 71' has a shell space 711' and a top liquid outlet hole 712' and at least one side liquid inlet hole 713' respectively connected to the shell space 711', wherein the flow control element 72' is movably disposed in the shell space 711' of the liquid extraction shell 71' to allow or prevent the shell space 711' and the top liquid outlet hole 712' from being connected, wherein the bottom of the support column 73' abuts against the liquid extraction shell 71', and the top of the support column 73' abuts against the flow control element 72'. The liquid extraction housing 71' is mounted on the piston 40', the top liquid outlet 712' of the liquid extraction housing 71' is communicated with the piston channel 41' of the piston 40', and the side liquid inlet 713' of the liquid extraction housing 71' is communicated with the pump chamber 80'.

[0240] In a natural state (i.e., when the head cap 20' is not subjected to force), the support column 73' supports the flow control element 72' upward to keep the flow control element 72' in a position that prevents the shell space 711' of the liquid extraction shell 71' and the top liquid outlet 712' from being connected. At this time, the liquid extraction part 70' is in the closed state, and the fluid in the pump chamber 80' is prevented from entering the piston channel 41' of the piston 40' through the liquid extraction part 70'.

[0241] Under a force state (i.e., when the head cap 20' is pressed downward), the head cap 20' drives the piston 40' to move downward to reduce the volume of the pump chamber 80'. At this time, the pressure in the pump chamber 80' and the shell space 711' of the liquid extraction shell 71' increases to drive the flow control element 72' to move downward in the shell space 711' of the liquid extraction shell 71', so that the flow control element 72' allows the shell space 711' of the liquid extraction shell 71' and the top liquid outlet 712' to be connected. At this time, the liquid extraction part 70' is in the open state, and the fluid in the pump chamber 80' is allowed to enter the piston channel 41' of the piston 40' and the head cap channel 21' of the head cap 20' through the liquid extraction part 70', and is sprayed out of the atomizing packaging device after being atomized by the atomizing nozzle 30'. It can be understood that the flow control element 72' compresses the support column 73' when being driven to move downward, so that the support column 73' is deformed and accumulates elastic potential energy. When the pressure applied to the head cap 20' is removed, the support column 73' provides a restoring force in the process of restoring the initial state, so as to drive the flow control element 72' to move upward and again prevent the shell space 711' of the liquid extraction shell 71' and the top liquid outlet hole 712' from being connected.

[0242] Continue to refer to the attached Fig.34 , Fig.36 and Fig.38 The flow control element 72' divides the shell space 711' of the liquid collection shell 71' into an upper space 7111' and a lower space 7112' which are independent of each other. The top liquid outlet 712' and the side liquid inlet 713' of the liquid collection shell 71' are both connected to the upper space 7111', and the support column 73' is located in the lower space 7112'. In this way, on the one hand, when the head cap 20' is pressed, the fluid in the pump chamber 80' of the spray pump 1000' flows out from the pump chamber 80'. After the side liquid inlet hole 713' of the liquid extraction shell 71' enters the upper space 7111', it can quickly push the flow control element 72' to move downward, so as to allow the upper space 7111' and the top liquid outlet hole 712' to communicate with each other and improve the sensitivity of the spray pump 1000'. On the other hand, the fluid entering the upper space 7111' is prevented from entering the lower space 7112', so as to avoid adversely affecting the rebound ability of the support column 73' located in the lower space 7112'. In other words, the support column 73' is never in contact with the fluid.

[0243] Specifically, refer to the attached Figure 34 to Figure 39 The flow control element 72' further includes a flow control seat 721', a flow control column 722' and a flow control ring 723', wherein the flow control column 722' integrally extends upward from the middle of the flow control seat 721', and the flow control column 722' is used to allow or prevent the upper space 7111' of the liquid extraction shell 71' and the top liquid outlet hole 712' from being connected, and the flow control ring 723' integrally extends upward and outward from the edge of the flow control seat 721', and the flow control ring 723' is compressed and pressed against the inner wall of the liquid extraction shell 71', so that the flow control element 72' divides the shell space 711' of the liquid extraction shell 71' into the independent upper space 7111' and the lower space 7112'.

[0244] In the spray pump 1000' of the utility model, the flow control element 72' is movably arranged in the shell space 711' of the liquid collection shell 71' in such a manner that the flow control ring 723' is compressed by the inner wall of the liquid collection shell 71'. In this way, on the one hand, the liquid collection portion 70' avoids generating a gap at the connection position between the flow control element 72' and the liquid collection shell 71', so that the fluid entering the upper space 7111' through the side liquid inlet hole 713' of the liquid collection shell 71' is prevented from entering the lower space 7112', so as to avoid adversely affecting the rebound ability of the support column 73' located in the lower space 7112'. On the other hand, the liquid collection portion 70' increases the stability of the relative position of the flow control element 72' and the liquid collection shell 71', so as to avoid the flow control element 72' from tilting in the shell space 711' of the liquid collection shell 71'.

[0245] It is worth mentioning that the manner in which the flow control column 722' of the flow control element 72' prevents the upper space 7111' of the liquid extraction shell 71' from being connected to the top liquid outlet hole 712' is not limited in the spray pump 1000' of the present invention. For example, in this specific example of the spray pump 1000' of the present invention, refer to the attached Figure 34 to Figure 39 , the top of the flow control column 722' of the flow control element 72'2 extends into the top liquid outlet 712' of the liquid extraction shell 71', and the peripheral wall of the flow control column 722' and the inner wall of the liquid extraction shell 71' for forming the top liquid outlet 712' are closely fitted, so that the flow control column 722' of the flow control element 72' can prevent the upper space 7111' of the liquid extraction shell 71' from being connected with the top liquid outlet 712'. It can be understood that after the flow control column 722' of the flow control element 72'2 moves away from the top liquid outlet 712' of the liquid extraction shell 71', the flow control column 722' of the flow control element 72' allows the upper space 7111' of the liquid extraction shell 71' to be connected with the top liquid outlet 712'.

[0246] Continue to refer to the attached Figure 34 to Figure 39 The liquid extraction shell 71' further includes an upper shell 714' and a lower shell 715', the upper shell 714' and the lower shell 715' are mounted on each other to form the shell space 711' between the upper shell 714' and the lower shell 715', and the top liquid outlet 712' and the side liquid inlet 713' are both formed in the upper shell 714'. By dividing the liquid extraction shell 71' into the upper shell 714' and the lower shell 715', it is convenient to assemble the liquid extraction part 70'.

[0247] It is worth mentioning that the installation method of the upper shell 714' and the lower shell 715' of the liquid extraction shell 71' is not limited in the spray pump 1000' of the present invention. For example, in this specific example of the spray pump 1000' of the present invention, refer to the attached Figure 34 to Figure 39 A portion of the lower shell 715' is embedded in the upper shell 714'. Based on the friction force generated between the outer wall of the lower shell 715' and the inner wall of the upper shell 714', the upper shell 714' and the lower shell 715' are reliably installed, and there is no gap at the combined position of the upper shell 714' and the lower shell 715', so as to prevent the fluid in the pump chamber 80' of the spray pump 1000' from entering the lower space 7112' of the liquid intake shell 71' through the combined position of the upper shell 714' and the lower shell 715'.

[0248] Preferably, the lower shell 715' surrounds the bottom of the support column 73', so that the support column 73' can be reliably held between the lower shell 715' and the flow control element 72'. Specifically, the lower shell 715' has a mounting groove 7151', and the bottom of the support column 73' is mounted in the mounting groove 7151' of the lower shell 715', so that the lower shell 715' surrounds the bottom of the support column 73'. When the flow control element 72' is driven to move downward and compress the support column 73', the lower shell 715' can prevent the deformed support column 73' from tilting, so that the support column 73' is reliably held between the lower shell 715' and the flow control element 72'.

[0249] In the spray pump 1000' of the present invention, refer to the attached Fig.37 The inner wall of the upper shell 714' of the liquid extraction shell 71' is an inclined inner wall, and the distance D1 between the top and the central axis of the liquid extraction shell 71' is smaller than the distance D2 between the bottom and the central axis of the liquid extraction shell 71', so that the compressive force on the flow control ring 723' of the flow control element 72' when the liquid extraction part 70' is in the closed state is greater than the compressive force on the liquid extraction part 70' when it is in the open state, that is, the more the flow control element 72' moves downward, the smaller the compressive force on the flow control ring 723' of the flow control element 72'. Through the above structural design, the fluid entering the upper space 7111' from the side liquid inlet hole 713' of the liquid extraction shell 71' can easily push the flow control element 72' to move downward, so that the liquid extraction part 70' switches from the closed state to the open state.

[0250] Continue to refer to the attached Figure 33 to Figure 39The support column 73' has a column through hole 731', the lower shell 715' of the liquid extraction shell 71' closes the bottom opening of the support column 73', and the flow control element 72' closes the top opening of the support column 73'. In this way, when the head cap 20' is pressed, the flow control element 72' is driven downward by the fluid entering the upper space 7111' of the liquid extraction shell 71' to compress the support column 73' to deform it and accumulate elastic potential energy. At the same time, the air in the column through hole 731' of the support column 73' is compressed. When the pressure applied to the head cap 20' is removed, the support column 73' and the air in the column through hole 731' of the support column 73' provide a composite restoring force to drive the flow control element 72' to reset reliably and timely to prevent the upper space 7111' of the liquid extraction shell 71' and the top liquid outlet 712' from being connected.

[0251] Preferably, the lower shell 715' has a groove 7152', and the groove 7152' is connected to the column through hole 731' of the support column 73'. In this way, when the head cap 20' is pressed to make the flow control element 72' driven downward by the fluid entering the upper space 7111' of the liquid extraction shell 71', the air in the column through hole 731' of the support column 73' and the air in the groove 7152' of the lower shell 715' can both be compressed, so that after the pressure applied to the head cap 20' is removed, the support column 73' and the compressed air can provide sufficient restoring force to drive the flow control element 72' to reset reliably and timely.

[0252] Continue to refer to the attached Figure 32 to Figure 39The head cap 20' further includes a head cap body 22', a head cap mounting column 23' and a head cap extension ring 24' and a head cap groove 25', wherein the head cap mounting column 23' integrally extends downward from the middle of the head cap body 22', the head cap channel 21' is formed in the head cap body 22' and the head cap mounting column 23', the head cap extension ring 24' integrally extends downward from the edge of the head cap body 22', and the head cap extension ring 24' surrounds the outside of the head cap mounting column 23' to form a head cap groove 25' between the head cap mounting column 23' and the head cap extension ring 24'. The head cap groove 25', wherein the atomizing nozzle 30' is installed on the head cap body 22', the top of the connecting rod 43' of the piston 40' is installed on the head cap mounting column 23', wherein the spring 60' is sleeved on the connecting rod 43' of the piston 40' and the head cap mounting column 23' of the head cap 20', the top of the spring 60' extends upward to the head cap groove 25' of the head cap 20' and abuts against the head cap body 22', and the bottom of the spring 60' extends downward to the pump body space 11' of the pump body 10' and abuts against the spring seat 90'.

[0253] Continue to refer to the attached Figure 32 to Figure 39 The spray pump 1000' further includes an assembly portion 100', the assembly portion 100' includes an assembly shoulder 101' and a screw thread 102' extending downward from the assembly shoulder 101', the assembly shoulder 101' has a shoulder through hole 1011', the top of the pump body 10' is assembled on the assembly shoulder 101', the spring 60' and the connecting rod 43' of the piston 40' extend to the top of the assembly shoulder 101' through the shoulder through hole 1011' of the assembly shoulder 101', wherein the screw thread 102' of the assembly portion 100' can be screwed on the container mouth of the packaging container 2000' to achieve reliable installation of the spray pump 1000' and the packaging container 2000'. Preferably, the assembly portion 100' further includes a shielding ring 103', which extends upward from the assembly shoulder 101' as a whole, and the head cap extension ring 24' of the head cap 20' extends downward to the inner side of the shielding ring 103' of the assembly portion 100', so that the shielding ring 103' shields the gap between the pump body 10' and the head cap extension ring 24', thereby making the gap between the pump body 10' and the head cap extension ring 24' and the spring 60' visually invisible.

[0254] Preferably, in the spray pump 1000' of the present invention, the pump body 10', the head cap 20', the atomizing nozzle 30', the piston 40', the valve 50', the spring 60', the spring seat 90', the assembly part 100' and the liquid collection shell 71' of the liquid collection part 70', the flow control element 72' and the support column 73' are all made of plastic material, so that the spray pump 1000' can be recycled as a whole, thereby reducing the difficulty of recycling the spray pump 1000'.

[0255] That is, in some embodiments of the spray pump 1000' of the present invention, the spring 60' is a plastic spring 60a'. Fig.40 and Fig.41 The plastic spring 60a' further includes at least three extension legs 61', each of which extends spirally around the central axis of the plastic spring 60a', and each of which has a plurality of quadrilateral hollow parts 610', which are spaced apart from each other along the height direction of the extension leg 61', and the side parts of adjacent extension legs 61' are integral. In this way, on the one hand, when the plastic spring 60a' is compressed, the extension legs 61' can be evenly stressed to prevent the plastic spring 60a' from tilting, and on the other hand, the entire height of the plastic spring 60a' On the one hand, the plastic spring 60a' can be compressed in all directions to increase the deformation of the plastic spring 60a'. On the other hand, the plastic spring 60a' can prevent the extension legs 61' from expanding all around when compressed, that is, the deformation direction of the plastic spring 60a' is limited to the height direction to avoid the compressed plastic spring 60a' from scratching the inner wall of the pump body 10' and / or the head cap 20', thereby ensuring the user's feel and smoothness when pressing the head cap 20', and avoiding the compressed plastic spring 60a' from being stuck by the inner wall of the pump body 10' and / or the head cap 20' to cause failure problems, thereby improving the reliability of the spray pump 1000'.

[0256] Continue to refer to the attached Fig.40 and Fig.41Each of the extension legs 61' of the plastic spring 60a' comprises a top connection portion 611', a bottom connection portion 612', two legs 613' and a plurality of traction portions 614', wherein the two legs 613' are arranged at intervals from each other, the opposite ends of the top connection portion 611' respectively extend to and are connected to the tops of the two legs 613', the opposite ends of the bottom connection portion 612' respectively extend to and are connected to the bottoms of the two legs 613', and the opposite ends of the traction portions 614' respectively extend to and are connected to different positions in the middle of the two legs 613', so as to form the hollow portion 610' between two adjacent traction portions 614' and the two legs 613', and at the uppermost portion of the traction portions 614' The hollow portion 610' is formed between the traction portion 614', the top connecting portion 611' and the two legs 613', and the hollow portion 610' is formed between the traction portion 614' at the lowest of the traction portions 614', the bottom connecting portion 612' and the two legs 613', wherein a leg 613' of one of the extension legs 61' and a leg 613' of an adjacent extension leg 61' are integral, so that each of the extension legs 61' of the plastic spring 60a' has a plurality of quadrilateral hollow portions 610' spaced apart along the height direction, so that the entire height direction of the plastic spring 60a' can be compressed, so as to increase the deformation amount of the plastic spring 60a'. When the plastic spring 60a' is compressed, the traction parts 614' of the extension leg 61' can pull the two legs 613' to limit the deformation direction of the legs 613' to the height direction of the plastic spring 60a', thereby preventing the legs 613' from deforming laterally and further preventing the plastic spring 60a' from expanding in all directions.

[0257] Preferably, the thickness of the traction portion 614' of the extension leg 61' is smaller than the thickness of the leg portion 613', thereby ensuring that the traction portion 614' has the function of limiting the deformation direction of the plastic spring 60a'. This not only saves materials to reduce the manufacturing cost of the plastic spring 60a', but also reduces the resistance provided by the traction portion 614' when pressing the head cap 20', so that the user can press the head cap 20' smoothly.

[0258] Preferably, the hollow portion 610' formed between the two leg portions 613' and the two adjacent traction portions 614' of the extension leg 61' is a parallelogram structure, so that when the user presses the head cap 20', the plastic spring 60a' can be smoothly squeezed and deformed.

[0259] Continue to refer to the attached Fig.40 and Fig.41 The top connecting parts 611' of the adjacent extension legs 61' of the plastic spring 60a' are integral, and the top connecting parts 611' of these extension legs 61' form a circular ring structure, and the bottom connecting parts 612' of the adjacent extension legs 61' are integral, and the bottom connecting parts 612' of these extension legs 61' form a circular ring structure, so that the plastic spring 60a' can be stably arranged between the head cap 20' and the spring seat 90' to avoid lateral displacement of the plastic spring 60a'.

[0260] Attached Figures 42 to 51 The operation process of the spray packaging device is shown.

[0261] Reference Fig.42 and Fig.43 , the spray packaging device is in a natural state, at this time, the flow control element 72' of the liquid taking part 70' prevents the upper space 7111' of the liquid taking shell 71' from being connected with the piston channel 41' of the piston 40', and the valve 50' prevents the pump chamber 80' from being connected with the liquid inlet channel 12' of the pump body 10', and the pressure in the pump chamber 80' is consistent with the pressure in the upper space 7111' of the liquid taking shell 71'.

[0262] Reference Figures 44 to 47, when the user presses the head cap 20', on the first hand, the head cap 20' presses the plastic spring 60a' toward the direction of the spring seat 90', so that the plastic spring 60a' is compressed and deformed to accumulate elastic potential energy; on the second hand, the head cap 20' drives the piston 40' and the liquid taking part 70' to move downward, so as to reduce the volume of the pump chamber 80' and increase the pressure in the pump chamber 80' and the upper space 7111' of the liquid taking shell 71'; on the third hand, the fluid entering the upper space 7111' of the liquid taking shell 71' from the side liquid inlet hole 713' of the liquid taking shell 71' drives the flow control element 72' to move downward, so that the flow control element 72' allows the upper space 7111' of the liquid taking shell 71' The upper space 7111' is connected to the piston channel 41' of the piston 40'. At this time, the downwardly moving flow control element 72' compresses the support column 73' to cause it to produce elastic deformation and accumulate elastic potential energy, and the flow control element 72' compresses the air located in the column perforation 731' of the support column 73' and the groove 7152' of the lower shell 715', and the fluid in the pump chamber 80' is allowed to enter the piston channel 41' of the piston 40' and the head cap channel 21' of the head cap 20' through the side liquid inlet hole 713' of the liquid extraction shell 71', the upper space 7111' and the top liquid outlet hole 712', and is sprayed out of the atomizing packaging device after being atomized by the atomizing nozzle 30'. It can be understood that in this process, the valve 50' is always maintained in a position that prevents the pump chamber 80' from being connected to the liquid inlet channel 12' of the pump body 10'.

[0263] Reference Figures 48 to 51When the pressure applied to the head cap 20' is released, on the first hand, the support column 73' and the compressed space provide a composite restoring force to drive the flow control element 72' to move upward, so that the flow control column 722' of the flow control element 72' extends into the top liquid outlet 712' of the liquid extraction shell 71', so that the flow control element 72' prevents the upper space 7111' of the liquid extraction shell 71' from being connected with the piston channel 41' of the piston 40'. On the second hand, the plastic spring 60a' provides a restoring force to drive the head cap 20' to move upward, and the head cap 20' drives the piston 40' and the liquid extraction part 70 ' moves upward synchronously to increase the volume of the pump chamber 80' and reduce the pressure in the pump chamber 80' and the upper space 7111' of the liquid collection shell 71'. At this time, the pressure in the packaging container 2000' is greater than the pressure in the pump chamber 80' of the spray pump 1000' and the upper space 7111' of the liquid collection shell 71'. The valve 50' allows the pump chamber 80' and the liquid inlet channel 12' of the pump body 10' to be connected to allow the fluid located in the packaging container 2000' to be supplemented to the pump chamber 80' of the spray pump 1000' and the upper space 7111' of the liquid collection shell 71'. When the pressure in the packaging container 2000' is consistent with the pressure in the pump chamber 80' of the spray pump 1000' and the upper space 7111' of the liquid extraction housing 71', the valve 50' returns to a position that prevents the pump chamber 80' from being connected to the liquid inlet channel 12' of the pump body 10'.

[0264] Refer to the attached drawings of the specification of this utility model Figures 52 to 70 A lotion pump 100'' according to a fourth preferred embodiment of the present invention will be disclosed and explained in the following description. The lotion pump 100'' is installed at the opening of a container 200'' to pump lotion from the container 200'', wherein the lotion pump 100'' includes a pump body 10'', a liquid extraction unit 20'', a valve 30'', a spring seat 40'' and a plastic spring 50''.

[0265] Specifically, the pump body 10'' has a pump body space 11'' and a liquid inlet channel 12'' and a top opening 13'' respectively connected to the pump body space 11'', wherein the valve 30'' is arranged in the pump body space 11'' of the pump body 10'', and the valve 30'' is configured to be able to open or close the liquid inlet channel 12'' of the pump body 10''.

[0266] In this specific example of the lotion pump 100'' of the present invention, the valve 30'' further includes a valve sheet 31'', a mounting ring 32'' surrounding the valve sheet 31'', and at least one deformable connecting arm 33'' integrally connecting the valve sheet 31'' and the mounting ring 32'', wherein the mounting ring 32'' is fixedly mounted on the pump body space 11'' of the pump body 10'', and the valve sheet 31'' is suspended by the connecting arm 33'' at a position closing the liquid inlet channel 12'' of the pump body 10''. It can be understood that when the valve plate 31'' moves upward to open the liquid inlet channel 12'' of the pump body 10'', the valve plate 31'' pulls the connecting arm 33'' upward, causing the connecting arm 33'' to deform in the height direction and accumulate elastic potential energy, so that the valve plate 31'' can be pulled back to the position of closing the liquid inlet channel 12'' of the pump body 10'' by the connecting arm 33'' later.

[0267] In this specific example of the lotion pump 100'' of the present invention, the connecting arm 33'' has at least one bend between the valve sheet 31'' and the mounting ring 32'', so as to allow the valve sheet 31'' to pull the connecting arm 33'' to deform in the height direction when the valve sheet 31'' moves upward, thereby increasing the stroke of the valve sheet 31''. Specifically, one end of the connecting arm 33'' is connected to one side of the valve sheet 31'', and the other end of the connecting arm 33'' is connected to the non-corresponding side of the mounting ring 32'', so that the connecting arm 33'' has at least one bend between the valve sheet 31'' and the mounting ring 32'', thereby increasing the stroke of the valve sheet 31'' in the height direction.

[0268] It is worth mentioning that the number of the connecting arms 33'' of the valve 30'' is not limited in the lotion pump 100'' of the present invention. Figures 52 to 70 In the specific example of the lotion pump 100 ″ shown, the valve 30 ″ includes three connecting arms 33 ″, and the three connecting arms 33 ″ are centrally symmetrically distributed between the valve plate 31 ″ and the mounting ring 32 ″.

[0269] It is also worth mentioning that the way in which the mounting ring 32'' of the valve 30'' is fixedly mounted in the pump body space 11'' of the pump body 10'' is not limited in the lotion pump 100'' of the present invention. Figures 52 to 70In the specific example of the lotion pump 100'' shown, the shape and size of the outer wall of the mounting ring 32'' match the shape and size of the inner wall of the pump body 10''. After the mounting ring 32'' is inserted into the pump body space 11'' of the pump body 10'' from the top opening 13'' of the pump body 10'', the valve 30'' can be fixedly mounted in the pump body space 11'' of the pump body 10'' based on the friction force generated between the outer wall of the mounting ring 32'' and the inner wall of the pump body 10''.

[0270] Optionally, in other examples of the lotion pump 100 ″ of the present invention, the valve 30 ″ may be a ball valve, which opens the liquid inlet channel 12 ″ of the pump body 10 ″ by moving upward as a whole.

[0271] The liquid extraction unit 20'' includes a head cap 21'', a piston 22'', a piston seat 23'' and a driving rod 24'' and has an activity space 25''. The head cap 21'' has a head cap channel 211'', wherein the piston seat 23'' includes a seat body 231'' and a liquid guide tube 232'' extending upward from the seat body 231'', wherein the liquid guide tube 232'' has a liquid guide hole 2321'' and at least one liquid inlet hole 2322'' connected to the liquid guide hole 2321'', wherein the driving rod 24'' has a rod body channel 241'', the top of the liquid guide tube 232'' is fixedly mounted on the driving rod 24'' to form the activity space 25'' between the seat body 231'' and the bottom of the driving rod 24'', and the liquid guide tube 232'' The liquid guide hole 2321'' is connected with the rod body channel 241'' of the driving rod 24'', the top of the driving rod 24'' is fixedly mounted on the head cap 21'', and the rod body channel 241'' of the driving rod 24'' is connected with the head cap channel 211'' of the head cap 21'', wherein the piston 22'' is movably arranged in the activity space 25'' in a manner that the piston 22'' surrounds the outside of the liquid guide tube 232'', and the top of the piston 22'' can be close to or away from the bottom of the driving rod 24'', and the bottom of the piston 22'' can be close to or away from the piston seat 23''1.

[0272] It is worth mentioning that the top of the liquid guide tube 232'' is fixedly mounted on the driving rod 24'' in the lotion pump 100'' of the present invention. For example, in this specific example of the lotion pump 100'' of the present invention, refer to the attached Fig.56 and Fig.57The top of the liquid guide tube 232'' is inserted into the rod body channel 241'' of the driving rod 24''. Based on the friction generated between the outer wall of the liquid guide tube 232'' and the inner wall of the driving rod 24'', the top of the liquid guide tube 232'' can be fixedly installed on the driving rod 24'', and the liquid guide hole 2321'' of the liquid guide tube 232'' and the rod body channel 241'' of the driving rod 24'' are directly connected.

[0273] It is worth mentioning that the top of the driving rod 24'' is fixedly mounted on the head cap 21'' in the lotion pump 100'' of the present invention is not limited. For example, in this specific example of the lotion pump 100'' of the present invention, refer to the attached Fig.56 and Fig.57 The top of the driving rod 24'' is inserted into the head cap channel 211'' of the head cap 21''. Based on the friction generated between the outer wall of the driving rod 24'' and the inner wall of the head cap 21'', the top of the driving rod 24'' can be fixedly mounted on the head cap 21'', and the rod body channel 241'' of the driving rod 24'' and the head cap channel 211'' of the head cap 21'' are directly connected.

[0274] Furthermore, the head cap 21'' includes a head cap mounting portion 212'' and a head cap extension mouth 213'' extending laterally outward from the head cap mounting portion 212'', the head cap channel 211'' is formed at the head cap mounting portion 212'' and the head cap extension mouth 213'', wherein the top of the driving rod 24'' is fixedly mounted on the head cap mounting portion 212'' of the head cap 21''.

[0275] The piston 22'' has a piston channel 221'', and the liquid guide tube 232'' of the piston seat 23'' extends into the piston channel 221'' of the piston 22'', so that the piston 22'' surrounds the outside of the liquid guide tube 232''. In this specific example of the lotion pump 100'' of the present invention, refer to the attached Fig.56 and Fig.57 , the inner diameter of the piston channel 221 '' of the piston 22 '' is larger than the outer diameter of the liquid guiding tube 232 '', so that the liquid taking unit 20 '' has a gap between the inner wall of the piston 22 '' and the outer wall of the liquid guiding tube 232 ''. Optionally, in other examples of the lotion pump 100 '' of the present utility model, the inner diameter of the piston channel 221 '' of the piston 22 '' is consistent with the outer diameter of the liquid guiding tube 232 '', so that the inner wall of the piston 22 '' fits the outer wall of the liquid guiding tube 232 ''.

[0276] The process of assembling the piston 22'', the piston seat 23'' and the driving rod 24'' may be: first, allowing the top of the liquid guide tube 232'' of the piston seat 23'' to extend into the piston channel 221'' of the piston 22'', so as to fit the piston 22'' into the liquid guide tube 232'' and allow the piston 22'' to surround the outside of the liquid guide tube 232''; secondly, allowing the top of the liquid guide tube 232'' to be inserted into the rod body channel 241'' of the driving rod 24'', so as to fix the top of the liquid guide tube 232'' on the driving rod 24'', and forming the active space 25'' between the seat body 231'' and the driving rod 24'', so that the piston 22'' is movably arranged in the active space 25'' up and down.

[0277] Now go to the attached Figure 54 to Figure 57The piston 22'' includes a piston outer ring 222'', a piston inner ring 223'' and a piston spacer ring 224'', and the piston 22'' has an upper piston groove 225'' and a lower piston groove 226'', the piston outer ring 222'' surrounds the outside of the piston inner ring 223'', the outer side of the piston spacer ring 224'' extends to and is integrally connected to the middle of the piston outer ring 222'', and the inner side of the piston spacer ring 224'' extends to and is integrally connected to the The middle part of the piston inner ring 223'', so that the piston 22'' forms the upper piston groove 225'' at the upper part of the piston outer ring 222'', between the upper part of the piston inner ring 223'' and the piston spacer ring 224'', and forms the lower piston groove 226'' at the lower part of the piston outer ring 222'', between the lower part of the piston inner ring 223'' and the piston spacer ring 224'', and the upper piston groove 225'' and the lower piston groove 226'' of the piston 22'' are isolated. When the upper part of the piston inner ring 223'' of the piston 22'' enters the rod body channel 241'' of the driving rod 24'' at the bottom of the driving rod 24'', the bottom of the driving rod 24'' enters the upper piston groove 225'' of the piston 22'', and the inner wall of the driving rod 24'' is in contact with the inner wall of the piston inner ring 223'' of the piston 22'' and / or the end face of the driving rod 24'' is in contact with the top face of the piston spacer ring 224'' of the piston 22'', the top of the piston 22'' is in contact with the bottom of the driving rod 24'', and at this time, the bottom of the piston 22'' is away from the seat body 231''. When the lower end surface of the piston inner ring 223'' of the piston 22'' fits against the top surface of the seat body 231'', the bottom of the piston 22'' fits against the seat body 231'', and at this time, the top of the piston 22'' is away from the driving rod 24''.

[0278] Continue to refer to the attached Figures 52 to 70 The liquid taking unit 20'' is movably arranged in the pump body space 11'' of the pump body 10'' in such a way that the outer wall of the piston 22'' fits against the inner wall of the pump body 10'', wherein the spring seat 40'' is sleeved on the middle part of the driving rod 24'', and the spring seat 40'' is fixedly installed in the pump body space 11'' of the pump body 10'' to prevent the liquid taking unit 20'' from detaching upward from the pump body 10'', wherein the opposite ends of the plastic spring 50'' respectively abut against the liquid taking unit 20'' and the spring seat 40''.

[0279] Go to the attached Fig.56 and Fig.57In this specific example of the lotion pump 100'' of the present invention, the outer wall of the piston outer ring 222'' of the piston 22'' is tightly fitted to the inner wall of the pump body 10'', so as to generate sufficient friction between the outer wall of the piston outer ring 222'' of the piston 22'' and the inner wall of the pump body 10'', so as to prevent the lotion from overflowing through the joint position of the pump body 10'' and the piston 22'' when the lotion pump 100'' is used to pump the lotion contained in the container 200'', so as to improve the reliability of the lotion pump 100''.

[0280] It is worth mentioning that the manner in which the spring seat 40'' locks the liquid taking unit 20'' into the pump body space 11'' of the pump body 10'' is not limited in the lotion pump 100'' of the present invention. For example, in this specific example of the lotion pump 100'' of the present invention, refer to the attached Fig.56 and Fig.57 The spring seat 40'' has a seat body through hole 41'', the driving rod 24'' includes a driving ring 242'' and a connecting tube 243'' extending upward from the driving ring 242'', the outer diameter of the driving ring 242'' is larger than the inner diameter of the seat body through hole 41'' of the spring seat 40'', the outer diameter of the connecting tube 243'' is smaller than the inner diameter of the seat body through hole 41'' of the spring seat 40'', and the connecting tube 243'' extends into the seat body through hole 41'' of the spring seat 40'' to fit the spring seat 40'' on the driving rod 24' ', wherein the outer diameter size and shape of the spring seat 40'' match the size and shape of the inner wall of the pump body 10''. After the spring seat 40'' is inserted into the pump body space 11'' of the pump body 10'' from the top opening 13'' of the pump body 10'', based on the friction force generated between the outer wall of the spring seat 40'' and the inner wall of the pump body 10'', the spring seat 40'' is fixedly installed in the pump body space 11'' of the pump body 10'', so that the spring seat 40'' locks the liquid taking unit 20'' in the pump body space 11'' of the pump body 10''. It can be understood that, since the outer diameter of the driving ring 242" of the driving rod 24" is larger than the inner diameter of the seat body through hole 41" of the spring seat 40", the spring seat 40" can prevent the liquid taking unit 20" from upwardly separating from the pump body space 11" of the pump body 10", so as to improve the reliability of the lotion pump 100".

[0281] Then refer to the attached Fig.56 and Fig.57In this specific example of the lotion pump 100'' of the present invention, the top of the plastic spring 50'' is mounted on the head cap mounting portion 212'' of the head cap 21'' and abuts against the head cap extension mouth 213'', and the bottom of the plastic spring 50'' is mounted on the connecting tube 243'' of the driving rod 24'' and abuts against the spring seat 40'', so that the plastic spring 50'' can be reliably arranged between the liquid taking unit 20'' and the spring seat 40'', and the head cap mounting portion 212'' of the head cap 21'' and the connecting tube 243'' of the driving rod 24'' cooperate with each other to prevent the plastic spring 50'' from deflecting.

[0282] Continue to refer to the attached Fig.56 and Fig.57 , the head cap 21'' further includes a cover ring 214'' and a receiving chamber 215, the cover ring 214'' integrally extends downward from the head cap extension mouth 213'', and the cover ring 214'' surrounds the outside of the head cap mounting portion 212'' to form the receiving chamber 215 between the head cap mounting portion 212'' and the cover ring 214'', wherein the top of the plastic spring 50'' is compressibly disposed in the receiving chamber 215 of the head cap 21''. Preferably, the cover ring 214'' of the head cap 21'' extends to the pump body space 11'' of the pump body 10'' through the top opening 13'' of the pump body 10'', so that the pump body 10'' and the cover ring 214'' of the head cap 21'' cooperate with each other to hide the plastic spring 50''.

[0283] Continue to refer to the attached Figures 52 to 70 The lotion pump 100'' further includes a bottle cap 60'', and the bottle cap 60'' is fixedly mounted on the pump body 10'' in a manner that the bottle cap 60'' surrounds the top of the pump body 10''. After the bottom of the pump body 10'' is inserted into the container 200'' through the container opening of the container 200'', the bottle cap 60'' can be fixedly mounted on the container 200'' to install the lotion pump 100'' on the container 200''. For example, the inner wall of the bottle cap 60'' and the outer wall of the container opening of the container 200'' are respectively provided with a threaded structure, and the two cooperate with each other to fixedly mount the bottle cap 60'' on the container 200'', thereby installing the lotion pump 100'' on the container 200''.

[0284] It is worth mentioning that the bottle cap 60'' is fixedly mounted on the top of the pump body 10'' in the lotion pump 100'' of the present invention is not limited. For example, in this specific example of the lotion pump 100'' of the present invention, refer to the attached Fig.56 and Fig.57 The bottle cap 60'' has a cover body through hole 61'' and an annular clamping groove 62'', and the top of the pump body 10'' is clamped in the clamping groove 62'' of the bottle cap 60'' to fixedly install the bottle cap 60'' on the filling container 200'', wherein the bottom of the cover ring 214'' of the head cap 21'' extends to the pump body space 11'' of the pump body 10'' through the cover body through hole 61'' of the bottle cap 60'' and the top opening 13'' of the pump body 10'' in sequence. Preferably, the inner diameter of the cover body through hole 61'' of the bottle cap 60'' is larger than the outer diameter of the cover ring 214'' of the head cap 21'', so that there is a gap between the bottle cap 60'' and the cover ring 214'' of the head cap 21'', thereby avoiding friction between the outer wall of the cover ring 214'' of the head cap 21'' and the inner wall of the bottle cap 60'' when the head cap 21'' is pressed to move downward.

[0285] Preferably, the lotion pump 100'' further includes a sealing ring 70''. When the bottle cap 60'' is fixedly mounted on the container 200'', the sealing ring 70'' is disposed between the top of the pump body 10'' and the container 200'' to seal the joint position of the pump body 10'' and the container 200''.

[0286] Preferably, the lotion pump 100" further includes an extension tube 80", the extension tube 80" having a tube channel 81", the top of the extension tube 80" is fixedly mounted on the bottom of the pump body 10", and the tube channel 81" of the extension tube 80" can be connected to the pump body space 11" of the pump body 10" through the liquid inlet channel 12" of the pump body 10". When the lotion pump 100" is mounted on the container 200", the bottom of the extension tube 80" can extend toward the bottom of the container 200", so as to allow the lotion pump 100" to pump the lotion at the bottom of the container 200".

[0287] Now turn the attached Figure 58 to Figure 65 , and combined with the attached Figure 54 to Figure 57 , Figures 66 to 70The plastic spring 50'' includes an upper ring body 51'', a lower ring body 52'', a traction portion 53'' and at least three elastic legs 54'', wherein the traction portion 53'' and the elastic legs 54'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', wherein one end of the elastic legs 54'' respectively extends upward to and is connected to the upper ring body 51'', and the other end respectively extends downward to and is connected to the lower ring body 52'', wherein one end of the traction portion 53'' extends upward to and is connected to the elastic leg 54'', and the other end extends downward to and is connected to the elastic leg 54'', and the traction portion 53'' and each of the elastic legs 54'' respectively have a plurality of connection positions. When the plastic spring 50'' is assembled between the liquid taking unit 20'' and the spring seat 40'' of the lotion pump 100'', the upper ring body 51'' of the plastic spring 50'' abuts against the head cap extension mouth 213'' of the head cap 21'' of the liquid taking unit 20'', the lower ring body 52'' of the plastic spring 50'' abuts against the spring seat 40'', and the traction portion 53'' of the plastic spring 50'' and these elastic legs 54'' surround the connecting tube 243'' of the driving rod 24'' and the outside of the head cap mounting portion 212'' of the head cap 21''.

[0288] When the plastic spring 50'' is squeezed, the traction portion 53'' can pull the elastic legs 54'' to limit the deformation direction of the elastic legs 54'' to the height direction of the plastic spring 50'', thereby preventing the elastic legs 54'' from expanding around the plastic spring 50''. Fig.65 In this way, the squeezed plastic spring 50'' can avoid scratching the inner wall of the cover ring 214'' of the head cap 21'' and the inner wall of the pump body 10'', which can not only improve the user's feel and smoothness when pressing the head cap 21'', but also avoid the failure problem caused by the elastic legs 54'' of the plastic spring 50'' being stuck by the inner wall of the cover ring 214'' of the head cap 21'' and / or the inner wall of the pump body 10''.

[0289] The elastic legs 54'' of the plastic spring 50'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', so that when the plastic spring 50'' is squeezed, without the assistance of the traction part 53'', the elastic legs 54'' can make the plastic spring 50'' be evenly stressed in the circumferential direction (the circumferential direction refers to the direction around the central axis of the plastic spring 50'', and the axial direction is perpendicular to the height direction). Therefore, in the utility model, the plastic spring 50'' does not require the traction part 53'' to directly connect the upper ring body 51'' and the lower ring body 52'', which is conducive to reducing costs by saving materials and flexibly designing the structural relationship between the elastic legs 54'' and the traction part 53'' of the plastic spring 50'' according to needs.

[0290] The top of the traction portion 53'' is connected to one of the elastic legs 54'', which is not connected to the upper ring body 51'', so that the plastic spring 50'' can avoid forming a triangular structure between the traction portion 53'', the elastic leg 54'' and the upper ring body 51''. Correspondingly, the bottom of the traction portion 53'' is connected to one of the elastic legs 54'', which is not connected to the lower ring body 52''. In this way, the plastic spring 50'' can avoid forming a triangular structure between the traction portion 53'', the elastic leg 54'' and the lower ring body 52''. In this way, the entire height position of the plastic spring 50'' can be compressed, so as to increase the deformation amount of the plastic spring 50''.

[0291] It can be understood that when the plastic spring 50'' is squeezed, the upper ring body 51'' and the lower ring body 52'' cooperate with each other to compress the traction part 53'' and the elastic legs 54'' in a balanced manner, so that the traction part 53'' and the elastic legs 54'' are deformed and accumulate elastic potential energy. In this process, the traction part 53'' pulls the elastic legs 54'' to prevent the elastic legs 54'' from expanding in all directions and limit the deformation direction of the elastic legs 54'' to the height direction of the plastic spring 50''. When the external force applied to the plastic spring 50'' is removed, the elastic legs 54'' provide the main restoring force in the process of restoring the initial state, so as to drive the plastic spring 50'' to return to the initial state. In this process, the traction part 53'' provides an auxiliary restoring force to assist in driving the plastic spring 50'' to return to the initial state. It can be seen that in the lotion pump 100 ″ of the present invention, the main function of the traction portion 53 ″ of the plastic spring 50 ″ is to pull the elastic legs 54 ″ to prevent the elastic legs 54 ″ from expanding around when the plastic spring 50 ″ is squeezed, and the secondary function is to provide auxiliary restoring force after the external force squeezing the plastic spring 50 ″ is removed.

[0292] Based on the role of the traction portion 53'' in the plastic spring 50'' of the utility model, in some embodiments of the utility model, the thickness dimension of the traction portion 53'' can be designed to be smaller than the thickness dimension of the elastic leg 54''. While ensuring that the traction portion 53'' has the function of limiting the deformation direction of the elastic legs 54'' and providing auxiliary restoring force, it is possible to save materials to reduce the cost of the plastic spring 50'', and also reduce the resistance provided by the traction portion 53'' when pressing the head cap 21'', so that the user can press the head cap 21'' smoothly. In other embodiments of the present invention, the width dimension of the traction portion 53'' may be smaller than the width dimension of the elastic leg 54''. In this way, while ensuring that the traction portion 53'' has the function of limiting the deformation direction of the elastic legs 54'' and providing auxiliary restoring force, it is not only possible to save materials to reduce the cost of the plastic spring 50'', but also the outer wall of the traction portion 53'' can be retracted relative to the outer wall of the elastic leg 54'', that is, the distance between the outer wall of the elastic leg 54'' and the central axis of the plastic spring 50'' is greater than the distance between the outer wall of the traction portion 53'' and the plastic spring 50''. Optionally, in other examples of the present invention, the distance between the outer wall of the elastic leg 54'' and the central axis of the plastic spring 50'' may be equal to the distance between the outer wall of the traction portion 53'' and the plastic spring 50''.

[0293] In the utility model, the extension direction of the traction portion 53'' of the plastic spring 50'' is opposite to the extension direction of the elastic leg 54'', so as to reduce the thickness of the traction portion 53'' as much as possible while the traction portion 53'' can reliably provide the auxiliary restoring force. For example, in some embodiments, the elastic leg 54'' extends spirally in a counterclockwise direction around the central axis of the plastic spring 50'', and the traction portion 53'' extends spirally in a clockwise direction around the central axis of the plastic spring 50''. In other embodiments, the elastic leg 54'' extends spirally in a clockwise direction around the central axis of the plastic spring 50'', and the traction portion 53'' extends spirally in a counterclockwise direction around the central axis of the plastic spring 50''. In this way, when the plastic spring 50'' is squeezed, on the one hand, the traction portion 53'' can pull the plastic spring 50''. On the one hand, the elastic legs 54'' are limited in the deformation direction of the elastic legs 54'' to the height direction of the plastic spring 50'' and prevent the elastic legs 54'' from expanding in all directions. On the other hand, the traction portion 53'' is compressed in the height direction, so that after the pressure applied to the plastic spring 50'' is removed, the traction portion 53'' can provide an auxiliary restoring force for the plastic spring 50'' to restore its initial state. On the other hand, the thickness of the traction portion 53'' can be further reduced, which not only saves materials but also increases the deformation of the plastic spring 50''. Specifically, since the thickness of the traction portion 53'' can be thinner, after the plastic spring 50'' is compressed, the distance between adjacent elastic legs 54'' in the height direction can be closer, thereby increasing the deformation of the plastic spring 50''.

[0294] Continue to refer to the attached Figure 58 to Figure 65The traction portion 53'' includes a plurality of traction segments 531'', one end of the traction segment 531'' extends to and is connected to one of the two adjacent elastic legs 54'', and the other end extends to and is connected to the other of the two adjacent elastic legs 54''. The upper ring body 51'' is not connected to the uppermost traction segment 531''. In this way, the plastic spring 50'' can avoid forming a triangle between the upper ring body 51'', the elastic legs 54'' and the uppermost traction segment 531''. The plastic spring 50" has a triangular structure, so that when the plastic spring 50" is squeezed, the distance between the upper ring body 51" and the uppermost traction segment 531" can be reduced. Accordingly, the lower ring body 52" is not connected to the lowermost traction segment 531", so that the plastic spring 50" can avoid forming a triangular structure between the lower ring body 52", the elastic legs 54" and the lowermost traction segment 531", so that when the plastic spring 50" is squeezed, the distance between the lower ring body 52" and the lowermost traction segment 531" can be reduced. In other words, the entire height position of the plastic spring 50" can be compressed, so as to increase the deformation amount of the plastic spring 50".

[0295] Reference Fig.58 and Fig.65 , from a side view, the traction segment 531'' extends obliquely between adjacent elastic legs 54''. For example, the extension direction of the traction segment 531'' is opposite to the extension direction of the elastic legs 54''. In this way, when the plastic spring 50'' is squeezed, the traction segment 531'' can not only pull these elastic legs 54'' to prevent these elastic legs 54'' from expanding to the surroundings, but also provide auxiliary restoring force after the external force squeezing the plastic spring 50'' is removed. In addition, from a top view, the traction segment 531'' extends in an arc shape between two adjacent elastic legs 54'', so that the shape of the traction segment 531'' matches the overall shape of the plastic spring 50'', thereby facilitating the plastic spring 50'' to be fitted onto the connecting tube 243'' of the drive rod 24'' and the head cap mounting portion 212'' of the head cap 21''.

[0296] Next, refer to the attached Fig.58 , Fig.59 , Fig.62 and Fig.65In the utility model, a parallelogram structure is formed between two adjacent elastic legs 54'' and two adjacent traction sections 531'' connected to the two elastic legs 54'', so that when the user presses the head cap 21'', the plastic spring 50'' can be smoothly squeezed and deformed.

[0297] Next, refer to the attached Fig.58 , Fig.59 , Fig.62 and Fig.65 In the present invention, a "Z"-shaped structure is formed between any one of the elastic legs 54'' and the two traction segments 531'' adjacent to the elastic leg 54'' in the height direction. In this way, when the plastic spring 50'' is squeezed, the traction segments 531'' can provide consistent traction force at different height positions of the elastic leg 54'' to limit the deformation direction of the elastic leg 54'' in the height direction of the plastic spring 50'', thereby preventing the plastic spring 50'' from expanding in all directions.

[0298] Next, refer to the attached Fig.58 , Fig.59 , Fig.62 and Fig.65 In the present invention, an "X"-shaped structure is formed between any one of the elastic legs 54" and the two traction segments 531" adjacent to each other in the horizontal direction and connected to the elastic leg 54", so that when the external force applied to the plastic spring 50" is removed, the elastic leg 54" and the traction segment 531" can cooperate with each other to ensure that the plastic spring 50" returns to its initial state.

[0299] Attached Figures 66 to 70 The process of the lotion pump 100 ″ pumping the lotion contained in the container 200 ″ is shown.

[0300] Reference Fig.66 and Fig.67 When the head cap 21'' starts to be pressed, on the one hand, the head cap 21'' drives the piston seat 23'' to move downward through the driving rod 24''. At this time, the top of the piston 22'' fits against the bottom of the driving rod 24'' and avoids forming a gap between the piston 22'' and the bottom of the driving rod 24''. The bottom of the piston 22'' is away from the seat body 231'' of the piston seat 23'' and allows the pump body space 11'' of the pump body 10'' and the liquid inlet hole 2322'' of the liquid guide tube 232'' of the piston seat 23'' to be connected. On the other hand, the head cap 21'' squeezes the plastic spring 50'' toward the direction of the spring seat 40''.

[0301] Reference Fig.68 When the head cap 21'' is further pressed, the driving rod 24'' pushes the piston 22'' to move downward to reduce the volume of the pump body space 11'' of the pump body 10'', so that the lotion in the pump body space 11'' of the pump body 10'' is discharged in sequence through the liquid inlet hole 2322'' of the liquid guide tube 232'', the liquid guide hole 2321'', the rod body channel 241'' of the driving rod 24'' and the head cap channel 211'' of the head cap 21''. During this process, the valve 30'' always remains in the position of closing the liquid inlet channel 12'' of the pump body 10'', and the traction section 531'' of the plastic spring 50'' pulls the adjacent elastic legs 54'' to limit the deformation direction of the adjacent elastic legs 54'' in the height direction and prevent the plastic spring 50'' from expanding all around. In this way, not only can the user's feel and smoothness when pressing the head cap 21'' be improved, but also the failure problem caused by the elastic legs 54'' of the plastic spring 50'' being stuck by the inner wall of the cover ring 214'' of the head cap 21'' and / or the inner wall of the pump body 10'' can be avoided.

[0302] Reference Fig.69 and Fig.70 After the external force pressing the head cap 21'' is removed, the elastic leg 54'' provides a main restoring force when restoring to the initial state and the traction section 531'' provides a secondary restoring force when restoring to the initial state, so as to drive the plastic spring 50'' to restore to the initial state and drive the head cap 21'' to drive the driving rod 24'', the piston seat 23'' and the piston 22'' to reset. In this process, the valve 30'' opens the liquid inlet channel 12'' of the pump body 10'' to allow the emulsion contained in the container 200'' to be pumped into the pump body space 11'' of the pump body 10'', and when the pressure of the pump body space 11'' of the pump body 10'' is consistent with the pressure of the container 200'', the valve 30'' is restored to close the liquid inlet channel 12'' of the pump body 10''.

[0303] Attached Figure 71 to Figure 76 Another embodiment of the plastic spring 50'' of the lotion pump of the present invention is shown. Figure 58 to Figure 65 The plastic spring 50 '' shown is different in that Figure 71 to Figure 76In the specific example of the plastic spring 50'' shown, the plastic spring 50'' includes an upper ring body 51'', a lower ring body 52'', a first traction portion 53a'', a second traction portion 53b'', at least three first elastic legs 54a'', at least three second elastic legs 54b'' and a partition ring 55''.

[0304] The first traction portion 53a'' and these first elastic legs 54a'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', wherein one end of these first elastic legs 54a'' respectively extends upward to and is connected to the upper ring body 51'', and the other end respectively extends downward to and is connected to the partition ring 55'', wherein one end of the first traction portion 53a'' extends upward to and is connected to the first elastic leg 54a'', and the other end extends downward to and is connected to the first elastic leg 54a'', and the first traction portion 53a'' and each of the first elastic legs 54a'' respectively have at least one connection position. The second traction portion 53b'' and these second elastic legs 54b'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', wherein one end of these second elastic legs 54b'' respectively extends upward to and is connected to the partition ring 55'', and the other end respectively extends downward to and is connected to the lower ring body 52'', wherein one end of the second traction portion 53b'' extends upward to and is connected to the second elastic leg 54b'', and the other end extends downward to and is connected to the second elastic leg 54b'', and the second traction portion 53b'' and each of the second elastic legs 54b'' respectively have at least one connection position. The first elastic leg 54a'' and the second elastic leg 54b'' extend in opposite directions, and the first traction portion 53a'' and the second traction portion 53b'' extend in opposite directions. When the plastic spring 50'' is assembled between the liquid taking unit 20'' and the spring seat 40'' of the lotion pump 100'', the upper ring body 51'' of the plastic spring 50'' abuts against the head cap extension mouth 53'' of the head cap 21'' of the liquid taking unit 20'', the lower ring body 52'' of the plastic spring 50'' abuts against the spring seat 40'', and the first traction portion 53a'', the second traction portion 53b'', the first elastic legs 54a'', the second elastic legs 54b'' and the partition ring 55'' of the plastic spring 50'' surround the connecting tube 243'' of the driving rod 24'' and the outside of the head cap mounting portion 212'' of the head cap 21''.

[0305] When the plastic spring 50'' is squeezed, the first pulling portion 53a'' can pull the first elastic legs 54a'' to limit the deformation direction of the first elastic legs 54a'' to the height direction of the plastic spring 50'', thereby preventing the first elastic legs 54a'' from expanding around the plastic spring 50'', and the second pulling portion 53b'' can pull the second elastic legs 54b'' to limit the deformation direction of the second elastic legs 54b'' to the height direction of the plastic spring 50'', thereby preventing the second elastic legs 54b'' expands around the plastic spring 50''. In this way, the squeezed plastic spring 50'' can avoid scratching the inner wall of the cover ring 214'' of the head cap 21'' and the inner wall of the pump housing 10''. This not only improves the user's feel and smoothness when pressing the head cap 21'', but also avoids the failure problem caused by the first elastic leg 54a'' and the second elastic leg 54b'' of the plastic spring 50'' being stuck by the inner wall of the cover ring 214'' of the head cap 21'' and / or the inner wall of the pump housing 10''.

[0306] Furthermore, since the extending direction of the first elastic legs 54a'' used to connect the upper ring body 51'' and the partition ring 55'' is opposite to the extending direction of the second elastic legs 54b'' used to connect the lower ring body 52'' and the partition ring 55'', when the plastic spring 50'' is squeezed, the plastic spring 50'' formed by the upper ring body 51'', the first traction portion 53a'', the first elastic legs 54a'' and the partition ring 55'' The rotation directions of an upper section 501'' and a lower section 502'' of the plastic spring 50'' formed by the lower ring body 52'', the second traction portion 53b'', the second elastic legs 54b'' and the partition ring 55'' are opposite, so that a relative force is formed inside the plastic spring 50'' to prevent the upper ring body 51'' from rotating relative to the head cap 21'' and to prevent the lower ring body 52'' from rotating relative to the spring seat 40''. In other words, when the plastic spring 50'' is squeezed, the position of the upper ring body 51'' relative to the head cap 21'' remains unchanged, and the position of the lower ring body 52'' relative to the spring seat 40'' remains unchanged.

[0307] These first elastic legs 54a'' of the plastic spring 50'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', so that when the plastic spring 50'' is squeezed, without the assistance of the first traction part 53a'', these first elastic legs 54a'' can make the plastic spring 50'' be evenly stressed in the axial direction. Therefore, in the utility model, the plastic spring 50'' does not require the first traction part 53a'' to be directly connected to the upper ring body 51'' and the partition ring 55'', which is beneficial to reduce costs by saving materials and flexibly design the structural relationship between the first elastic legs 54a'' and the first traction part 53a'' of the plastic spring 50'' according to needs. Correspondingly, these second elastic legs 54b'' of the plastic spring 50'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', so that when the plastic spring 50'' is squeezed, without the assistance of the second traction part 53b'', these second elastic legs 54b'' can make the plastic spring 50'' be evenly stressed in the axial direction. Therefore, in the utility model, the plastic spring 50'' does not require the second traction part 53b'' to directly connect the lower ring body 52'' and the partition ring 55'', which is beneficial to reduce costs by saving materials and flexibly design the structural relationship between the second elastic legs 54b'' and the second traction part 53b'' of the plastic spring 50'' according to needs.

[0308] The top of the first traction part 53a'' is connected to the first elastic leg 54a'', which is not connected to the upper ring body 51'', so that the plastic spring 50'' can avoid forming a triangular structure between the first traction part 53a'', the first elastic leg 54a'' and the upper ring body 51'', and the bottom of the first traction part 53a'' is connected to the first elastic leg 54a'', which is not connected to the partition ring 55'', so that the plastic spring 50'' can avoid forming a triangular structure between the first traction part 53a'', the first elastic leg 54a'' and the partition ring 55''. In this way, the entire height direction of the upper section 501'' of the plastic spring 50'' can be compressed, so as to increase the deformation of the plastic spring 50''. Correspondingly, the bottom of the second traction portion 53b'' is connected to a second elastic leg 54b'', which is not connected to the lower ring body 52'', so that the plastic spring 50'' can avoid forming a triangular structure between the second traction portion 53b'', the second elastic leg 54b'' and the lower ring body 52'', and the top of the second traction portion 53b'' is connected to a second elastic leg 54b'', which is not connected to the partition ring 55'', so that the plastic spring 50'' can avoid forming a triangular structure between the second traction portion 53b'', the second elastic leg 54b'' and the partition ring 55''. In this way, the entire height direction of the lower section 502'' of the plastic spring 50'' can be compressed, so as to increase the deformation of the plastic spring 50''.

[0309] It can be understood that when the plastic spring 50'' is squeezed, the upper ring body 51'' and the partition ring 55'' cooperate with each other to evenly compress the first traction portion 53a'' and these first elastic legs 54a'', so that the first traction portion 53a'' and these first elastic legs 54a'' are deformed and accumulate elastic potential energy. In this process, the first traction portion 53a'' pulls these first elastic legs 54a'' to prevent these first elastic legs 54a'' from expanding to the surroundings and limit the deformation direction of the first elastic legs 54a'' to the plastic spring. 50'' in the height direction, accordingly, the lower ring body 52'' and the partition ring 55'' cooperate with each other to evenly compress the second traction portion 53b'' and these second elastic legs 54b'', so that the second traction portion 53b'' and these second elastic legs 54b'' are deformed and accumulate elastic potential energy. In this process, the second traction portion 53b'' pulls these second elastic legs 54b'' to prevent these second elastic legs 54b'' from expanding all around and limit the deformation direction of the second elastic legs 54b'' to the height direction of the plastic spring 50''.

[0310] When the external force applied to the plastic spring 50'' is removed, the first elastic leg 54a'' provides the main restoring force in the process of returning to the initial state, so as to drive the upper section 501'' of the plastic spring 50'' to return to the initial state. In this process, the first traction portion 53a'' provides an auxiliary restoring force to assist in driving the upper section 501'' of the plastic spring 50'' to return to the initial state. Correspondingly, the second elastic leg 54b'' provides the main restoring force in the process of returning to the initial state, so as to drive the lower section 502'' of the plastic spring 50'' to return to the initial state. In this process, the second traction portion 53b'' provides an auxiliary restoring force to assist in driving the lower section 502'' of the plastic spring 50'' to return to the initial state. It can be seen that in the lotion pump 100'' of the present invention, the first traction portion 53a'' of the plastic spring 50'' has a main function of pulling the first elastic legs 54a'' to prevent the first elastic legs 54a'' from expanding around when the plastic spring 50'' is squeezed, and a secondary function of providing an auxiliary restoring force after the external force squeezing the plastic spring 50'' is removed. Correspondingly, the second traction portion 53b'' of the plastic spring 50'' has a main function of pulling the second elastic legs 54b'' to prevent the second elastic legs 54b'' from expanding around when the plastic spring 50'' is squeezed, and a secondary function of providing an auxiliary restoring force after the external force squeezing the plastic spring 50'' is removed.

[0311] Based on the role of the first traction part 53a'' and the second traction part 53b'' in the plastic spring 50'' of the utility model, in some embodiments of the utility model, the thickness dimension of the first traction part 53a'' can be designed to be smaller than the thickness dimension of the first elastic leg 54a'', while ensuring that the first traction part 53a'' has the function of limiting the deformation direction of these first elastic legs 54a'' and providing auxiliary restoring force, it is not only possible to save materials to reduce the cost of the plastic spring 50'', but also possible to reduce the first traction part when pressing the head cap 21''. 53a'' provides resistance so that the user can smoothly press the head cap 21''. Accordingly, the thickness of the second traction portion 53b'' can be designed to be smaller than the thickness of the second elastic leg 54b''. While ensuring that the second traction portion 53b'' has the function of limiting the deformation direction of these second elastic legs 54b'' and providing auxiliary restoring force, it can not only save materials to reduce the cost of the plastic spring 50'', but also reduce the resistance provided by the second traction portion 53b'' when pressing the head cap 21'', so that the user can smoothly press the head cap 21''.

[0312] Based on the role of the first traction portion 53a'' and the second traction portion 53b'' in the plastic spring 50'' of the utility model, in some other embodiments of the utility model, the width dimension of the first traction portion 53a'' can be smaller than the width dimension of the first elastic leg 54a''. In this way, while ensuring that the first traction portion 53a'' has the function of limiting the deformation direction of these first elastic legs 54a'' and providing auxiliary restoring force, not only can materials be saved to reduce the cost of the plastic spring 50'', but also the outer wall of the first elastic leg 54a'' can be retracted relative to the outer wall of the first elastic leg 54a'', that is, the distance between the outer wall of the first elastic leg 54a'' and the central axis of the plastic spring 50'' is greater than the distance between the first traction portion 53a'' and the central axis of the plastic spring 50''. 53a'' and the distance between the outer wall of the plastic spring 50'' and the central axis of the plastic spring 50''. Accordingly, the width dimension of the second traction portion 53b'' can be smaller than the width dimension of the second elastic leg 54b''. In this way, while ensuring that the second traction portion 53b'' has the function of limiting the deformation direction of these second elastic legs 54b'' and providing auxiliary restoring force, it is not only possible to save materials to reduce the cost of the plastic spring 50'', but also the outer wall of the second elastic leg 54b'' can be retracted relative to the outer wall of the second elastic leg 54b'', that is, the distance between the outer wall of the second elastic leg 54b'' and the central axis of the plastic spring 50'' is greater than the distance between the outer wall of the second traction portion 53b'' and the central axis of the plastic spring 50''.

[0313] In the utility model, the extension direction of the first traction portion 53a'' of the plastic spring 50'' is opposite to the extension direction of the first elastic leg 54a'', so that the thickness of the first traction portion 53a'' can be reduced as much as possible while the first traction portion 53a'' can reliably provide an auxiliary restoring force. For example, in some embodiments, the first elastic leg 54a'' extends spirally in a counterclockwise direction around the central axis of the plastic spring 50'', and the first traction portion 53a'' extends spirally in a clockwise direction around the central axis of the plastic spring 50''. In this way, when the plastic spring 50'' is squeezed, on the one hand, the first traction portion 53a'' can pull these first elastic legs 54a'' to limit the deformation direction of these first elastic legs 54a'' to the height direction of the plastic spring 50'' and prevent these first elastic legs 54a'' from expanding all around. On the other hand, the first traction portion 53a'' is compressed in the height direction, so that after the pressure applied to the plastic spring 50'' is cancelled, the first traction portion 53a'' can provide auxiliary restoring force for the plastic spring 50'' to restore its initial state. On the other hand, the thickness of the first traction portion 53a'' can be further reduced, which not only saves material but also increases the deformation amount of the plastic spring 50''. Specifically, since the thickness of the first traction portion 53a ″ can be thinner, after the plastic spring 50 ″ is compressed, the distance between adjacent first elastic legs 54a ″ in the height direction can be closer, thereby increasing the deformation amount of the plastic spring 50 ″.

[0314] Correspondingly, the extension direction of the second traction portion 53b'' of the plastic spring 50'' is opposite to the extension direction of the second elastic leg 54b'', so that the thickness of the second traction portion 53b'' can be reduced as much as possible while the second traction portion 53b'' can reliably provide an auxiliary restoring force. For example, in some embodiments, the second elastic leg 54b'' extends spirally in a clockwise direction around the central axis of the plastic spring 50'', and the second traction portion 53b'' extends spirally in a counterclockwise direction around the central axis of the plastic spring 50''. In this way, when the plastic spring 50'' is squeezed, on the one hand, the second traction portion 53b'' can pull these second elastic legs 54b'' to limit the deformation direction of these second elastic legs 54b'' to the height direction of the plastic spring 50'' and prevent these second elastic legs 54b'' from expanding all around. On the other hand, the second traction portion 53b'' is compressed in the height direction, so that after the pressure applied to the plastic spring 50'' is cancelled, the second traction portion 53b'' can provide auxiliary restoring force for the plastic spring 50'' to restore its initial state. On the other hand, the thickness of the second traction portion 53b'' can be further reduced, which not only saves material but also increases the deformation amount of the plastic spring 50''. Specifically, since the thickness of the second traction portion 53b″ can be thinner, after the plastic spring 50″ is compressed, the distance between adjacent second elastic legs 54b″ in the height direction can be closer, thereby increasing the deformation of the plastic spring 50″.

[0315] Continue to attach Figure 71 to Figure 76The first traction portion 53a'' includes a plurality of first traction segments 531a'', one end of the first traction segment 531a'' extends to and is connected to one of the two adjacent first elastic legs 54a'', the other end extends to and is connected to the other of the two adjacent first elastic legs 54a'', and the upper ring body 51'' is not connected to the top first traction segment 531a'', so that the plastic spring 50'' can avoid being connected to the upper ring body 51'', the first elastic leg 54a'' and the top first traction segment 531a''. '', so that when the plastic spring 50'' is squeezed, the distance between the upper ring body 51'' and the first traction segment 531a'' at the top can be reduced. Correspondingly, the partition ring 55'' is not connected to the first traction segment 531a'' at the bottom. In this way, the plastic spring 50'' can avoid forming a triangular structure between the partition ring 55'', the first elastic leg 54a'' and the first traction segment 531a'' at the bottom, so that when the plastic spring 50'' is squeezed, the distance between the partition ring 55'' and the first traction segment 531a'' at the bottom can be reduced. In other words, the entire height position of the upper section 501'' of the plastic spring 50'' can be compressed, so as to increase the deformation of the plastic spring 50''.

[0316] Correspondingly, the second traction portion 53b'' includes a plurality of second traction segments 531b'', one end of the second traction segment 531b'' extends to and is connected to one of the two adjacent second elastic legs 54b'', the other end extends to and is connected to the other of the two adjacent second elastic legs 54b'', and the partition ring 55'' is not connected to the uppermost second traction segment 531b'', so that the plastic spring 50'' can avoid being connected to the partition ring 55'', the second elastic leg 54b'' and the uppermost second traction segment 531 b'', so that when the plastic spring 50'' is squeezed, the distance between the partition ring 55'' and the second traction segment 531b'' at the top can be reduced. Correspondingly, the lower ring body 52'' is not connected to the second traction segment 531b'' at the bottom. In this way, the plastic spring 50'' can avoid forming a triangular structure between the lower ring body 52'', the second elastic leg 54b'' and the second traction segment 531b'' at the bottom, so that when the plastic spring 50'' is squeezed, the distance between the lower ring body 52'' and the second traction segment 531b'' at the bottom can be reduced. In other words, the entire height position of the lower section 502'' of the plastic spring 50'' can be compressed, so as to increase the deformation amount of the plastic spring 50''.

[0317] Reference Fig.71 , from a side view, the first traction segment 531a'' extends obliquely between adjacent first elastic legs 54a''. For example, the extension direction of the first traction segment 531a'' is opposite to the extension direction of the first elastic legs 54a''. In this way, when the plastic spring 50'' is squeezed, the first traction segment 531a'' can not only pull these first elastic legs 54a'' to prevent these first elastic legs 54a'' from expanding to the surroundings, but also provide auxiliary restoring force after the external force squeezing the plastic spring 50'' is removed. In addition, from a top view, the first traction segment 531a'' extends in an arc shape between two adjacent first elastic legs 54a'', so that the shape of the first traction segment 531a'' matches the overall shape of the plastic spring 50'', thereby facilitating the plastic spring 50'' to be fitted onto the connecting tube 243'' of the drive rod 24'' and the head cap mounting portion 212'' of the head cap 21''.

[0318] Accordingly, please refer to the attached Fig.71, from a side view, the second traction segment 531b'' extends obliquely between two adjacent second elastic legs 54b''. For example, the extension direction of the second traction segment 531b'' is opposite to the extension direction of the second elastic leg 54b''. In this way, when the plastic spring 50'' is squeezed, the second traction segment 531b'' can not only pull these second elastic legs 54b'' to prevent these second elastic legs 54b'' from expanding to the surroundings, but also provide auxiliary restoring force after the external force squeezing the plastic spring 50'' is removed. In addition, from a side view, the second traction segment 531b'' extends in an arc shape between two adjacent second elastic legs 54b'', so that the shape of the second traction segment 531b'' matches the overall shape of the plastic spring 50'', thereby facilitating the plastic spring 50'' to be fitted onto the connecting tube 243'' of the drive rod 24'' and the head cap mounting portion 212'' of the head cap 21''.

[0319] Next, refer to the attached Figure 71 to Figure 76 In the utility model, a parallelogram structure is formed between two adjacent first elastic legs 54a'' and two adjacent first traction segments 531a'' connected to the two first elastic legs 54a'', so that when the user presses the head cap 21'', the plastic spring 50'' can be smoothly squeezed and deformed. Correspondingly, a parallelogram structure is formed between two adjacent arc second elastic legs 54b'' and two adjacent second traction segments 531b'' connected to the two second elastic legs 54b'', so that when the user presses the head cap 21'', the plastic spring 50'' can be smoothly squeezed and deformed.

[0320] Next, refer to the attached Figure 71 to Figure 76In the present invention, a "Z"-shaped structure is formed between any one of the first elastic legs 54a'' and two adjacent first traction segments 531a'' connected to the first elastic leg 54a'' in the height direction. In this way, when the plastic spring 50'' is squeezed, these first traction segments 531a'' can provide consistent traction force at different height positions of the first elastic leg 54a'' to limit the deformation direction of the first elastic leg 54a'' in the height direction of the plastic spring 50'', thereby preventing the plastic spring 50'' from expanding in all directions. Correspondingly, a "Z"-shaped structure is formed between any second elastic leg 54b'' and two second traction segments 531b'' adjacent to the second elastic leg 54b'' in the height direction, so that when the plastic spring 50'' is squeezed, these second traction segments 531b'' can provide consistent traction force at different height positions of the second elastic leg 54b'' to limit the deformation direction of the second elastic leg 54b'' to the height direction of the plastic spring 50'', thereby preventing the plastic spring 50'' from expanding in all directions.

[0321] Next, refer to the attached Figure 71 to Figure 76 In the present invention, an "X"-shaped structure is formed between any one of the first elastic legs 54a'' and two adjacent first traction segments 531a'' connected to the first elastic leg 54a'' in the horizontal direction, so that when the external force applied to the plastic spring 50'' is removed, the first elastic leg 54a'' and the first traction segment 531a'' can cooperate with each other to ensure that the plastic spring 50'' returns to its initial state. Correspondingly, an "X"-shaped structure is formed between any one of the second elastic legs 54b'' and two adjacent second traction segments 531b'' connected to the second elastic leg 54b'' in the horizontal direction, so that when the external force applied to the plastic spring 50'' is removed, the second elastic leg 54b'' and the second traction segment 531b'' can cooperate with each other to ensure that the plastic spring 50'' returns to its initial state.

[0322] Attached Figure 77 to Figure 79 Another embodiment of the plastic spring 50'' of the lotion pump of the present invention is shown. Figure 58 to Figure 65 The plastic spring 50 '' shown is different in that Figure 77 to Figure 79 In the specific example of the plastic spring 50 ″ shown, the plastic spring 50 ″ includes an upper portion 501 ″ and a lower portion 502 ″.

[0323] The upper section 501'' includes an upper ring body 51'', a first traction portion 53a'', at least three first elastic legs 54a'' and a first assembly ring 56a'', the first traction portion 53a'' and these first elastic legs 54a'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', one end of these first elastic legs 54a'' respectively extends upward to and is connected to the upper ring body 51'', wherein one end of these first elastic legs 54a'' respectively extends upward to and is connected to the upper ring body 51'', and the other end extends downward to and is connected to the first assembly ring 56a'', wherein one end of the first traction portion 53a'' extends upward to and is connected to the first elastic leg 54a'', and the other end extends downward to and is connected to the first elastic leg 54a'', and the first traction portion 53a'' and each of the first elastic legs 54a'' respectively have at least one connection position.

[0324] The lower section 502'' includes a lower ring body 52'', a second traction portion 53b'', at least three second elastic legs 54b'' and a second assembly ring 56b'', the second traction portion 53b'' and these second elastic legs 54b'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', one end of these second elastic legs 54b'' respectively extends upward to and is connected to the second assembly ring 56b'', and the other end respectively extends downward to and is connected to the lower ring body 52'', wherein one end of the second traction portion 53b'' extends upward to and is connected to the second assembly ring 56b'', and the other end extends downward to and is connected to the second elastic leg 54b'', and the second traction portion 53b'' and each of the second elastic legs 54b'' respectively have at least one connection position.

[0325] The first assembly ring 56a'' of the upper section 501'' and the second assembly ring 56b'' of the lower section 502'' are assembled with each other, and the first assembly ring 56a'' and the second assembly ring 56b'' are constructed to remain in relative position, the extension direction of the first traction portion 53a'' of the upper section 501'' is opposite to the extension direction of the second traction portion 53b'', and the extension direction of the first elastic leg 54a'' of the upper section 501'' is opposite to the extension direction of the second elastic leg 54b'' of the lower section 502''. When the plastic spring 50'' is assembled between the liquid taking unit 20'' and the spring seat 40'' of the lotion pump 100'', the upper ring body 51'' of the upper portion 501'' of the plastic spring 50'' abuts against the head cap extension mouth 53 of the head cap 21'' of the liquid taking unit 20'', the lower ring body 52'' of the lower portion 502'' abuts against the spring seat 40'', and the first traction portion 53a'', the second traction portion 53b'', these first elastic legs 54a'', these second elastic legs 54b'', the first assembly ring 56a'' and the second assembly ring 56b'' of the plastic spring 50'' surround the connecting tube 243'' of the driving rod 24'' and the outside of the head cap mounting portion 212'' of the head cap 21''.

[0326] When the plastic spring 50'' is squeezed, the first pulling portion 53a'' can pull the first elastic legs 54a'' to limit the deformation direction of the first elastic legs 54a'' to the height direction of the plastic spring 50'', thereby preventing the first elastic legs 54a'' from expanding around the plastic spring 50'', and the second pulling portion 53b'' can pull the second elastic legs 54b'' to limit the deformation direction of the second elastic legs 54b'' to the height direction of the plastic spring 50'', thereby preventing the second elastic legs 54b'' expands around the plastic spring 50''. In this way, the squeezed plastic spring 50'' can avoid scratching the inner wall of the cover ring 214'' of the head cap 21'' and the inner wall of the pump body 10''. This not only improves the user's feel and smoothness when pressing the head cap 21'', but also avoids the failure problem caused by the first elastic leg 54a'' and the second elastic leg 54b'' of the plastic spring 50'' being stuck by the inner wall of the cover ring 214'' of the head cap 21'' and / or the inner wall of the pump body 10''.

[0327] Furthermore, since the extension direction of the first traction portion 53a'' of the upper portion 501'' is opposite to the extension direction of the second traction portion 53b'', and the extension direction of the first elastic leg 54a'' of the upper portion 501'' is opposite to the extension direction of the second elastic leg 54b'' of the lower portion 502'', when the plastic spring 50'' is squeezed, the rotation direction of the upper portion 501'' is opposite to the rotation direction of the lower portion 502'', thereby forming a relative force between the upper portion 501'' and the lower portion 502'', thereby preventing the upper ring body 51'' from rotating relative to the head cap 21'' and preventing the lower ring body 52'' from rotating relative to the spring seat 40''. In other words, when the plastic spring 50'' is squeezed, the position of the upper ring body 51'' relative to the head cap 21'' remains unchanged, and the position of the lower ring body 52'' relative to the spring seat 40'' remains unchanged.

[0328] These first elastic legs 54a'' of the upper section 501'' of the plastic spring 50'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', so that when the plastic spring 50'' is squeezed, without the assistance of the first traction part 53a'', these first elastic legs 54a'' can make the plastic spring 50'' be evenly stressed in the axial direction. Therefore, in the utility model, the plastic spring 50'' does not require the first traction part 53a'' to be directly connected to the upper ring body 51'' and the first assembly ring 56a'', which is beneficial to reduce costs by saving materials and flexibly design the structural relationship between the first elastic legs 54a'' and the first traction part 53a'' of the plastic spring 50'' according to needs. Correspondingly, these second elastic legs 54b'' of the plastic spring 50'' respectively extend in a spiral shape around the central axis of the plastic spring 50'', so that when the plastic spring 50'' is squeezed, without the assistance of the second traction part 53b'', these second elastic legs 54b'' can make the plastic spring 50'' be evenly stressed in the axial direction. Therefore, in the utility model, the plastic spring 50'' does not require the second traction part 53b'' to be directly connected to the lower ring body 52'' and the second assembly ring 56b'', which is beneficial to reduce costs by saving materials and flexibly design the structural relationship between the second elastic legs 54b'' and the second traction part 53b'' of the plastic spring 50'' as needed.

[0329] The top of the first traction portion 53a'' is connected to a first elastic leg 54a'', which is not connected to the upper ring body 51'', so that the plastic spring 50'' can avoid forming a triangular structure between the first traction portion 53a'', the first elastic leg 54a'' and the upper ring body 51'', and the bottom of the first traction portion 53a'' is connected to a first elastic leg 54a'', which is not connected to the first assembly ring 56a'', so that the plastic spring 50'' can avoid forming a triangular structure between the first traction portion 53a'', the first elastic leg 54a'' and the first assembly ring 56a''. In this way, the entire height direction of the upper section 501'' of the plastic spring 50'' can be compressed, so as to increase the deformation of the plastic spring 50''. Correspondingly, the bottom of the second traction portion 53b'' is connected to a second elastic leg 54b'', which is not connected to the lower ring body 52'', so that the plastic spring 50'' can avoid forming a triangular structure between the second traction portion 53b'', the second elastic leg 54b'' and the lower ring body 52'', and the top of the second traction portion 53b'' is connected to a second elastic leg 54b'', which is not connected to the second assembly ring 56b'', so that the plastic spring 50'' can avoid forming a triangular structure between the second traction portion 53b'', the second elastic leg 54b'' and the second assembly ring 56b''. In this way, the entire height direction of the lower section 502'' of the plastic spring 50'' can be compressed, so as to increase the deformation of the plastic spring 50''.

[0330] It can be understood that when the plastic spring 50'' is squeezed, the upper ring body 51'' and the first assembly ring 56a'' cooperate with each other to evenly compress the first traction portion 53a'' and the first elastic legs 54a'', so that the first traction portion 53a'' and the first elastic legs 54a'' are deformed and accumulate elastic potential energy. In this process, the first traction portion 53a'' pulls the first elastic legs 54a'' to prevent the first elastic legs 54a'' from expanding to the surroundings and limit the deformation direction of the first elastic legs 54a'' to the plastic spring. 50'' in the height direction, accordingly, the lower ring body 52'' and the second assembly ring 56b'' cooperate with each other to evenly compress the second traction portion 53b'' and these second elastic legs 54b'', so that the second traction portion 53b'' and these second elastic legs 54b'' are deformed and accumulate elastic potential energy. In this process, the second traction portion 53b'' pulls these second elastic legs 54b'' to prevent these second elastic legs 54b'' from expanding all around and limit the deformation direction of the second elastic legs 54b'' to the height direction of the plastic spring 50''.

[0331] When the external force applied to the plastic spring 50'' is removed, the first elastic leg 54a'' provides the main restoring force in the process of returning to the initial state, so as to drive the upper section 501'' of the plastic spring 50'' to return to the initial state. In this process, the first traction portion 53a'' provides an auxiliary restoring force to assist in driving the upper section 501'' of the plastic spring 50'' to return to the initial state. Correspondingly, the second elastic leg 54b'' provides the main restoring force in the process of returning to the initial state, so as to drive the lower section 502'' of the plastic spring 50'' to return to the initial state. In this process, the second traction portion 53b'' provides an auxiliary restoring force to assist in driving the lower section 502'' of the plastic spring 50'' to return to the initial state. It can be seen that in the lotion pump 100'' of the present invention, the first traction portion 53a'' of the plastic spring 50'' has a main function of pulling the first elastic legs 54a'' to prevent the first elastic legs 54a'' from expanding around when the plastic spring 50'' is squeezed, and a secondary function of providing an auxiliary restoring force after the external force squeezing the plastic spring 50'' is removed. Correspondingly, the second traction portion 53b'' of the plastic spring 50'' has a main function of pulling the second elastic legs 54b'' to prevent the second elastic legs 54b'' from expanding around when the plastic spring 50'' is squeezed, and a secondary function of providing an auxiliary restoring force after the external force squeezing the plastic spring 50'' is removed.

[0332] Based on the role of the first traction part 53a'' and the second traction part 53b'' in the plastic spring 50'' of the utility model, in some embodiments of the utility model, the thickness dimension of the first traction part 53a'' can be designed to be smaller than the thickness dimension of the first elastic leg 54a'', while ensuring that the first traction part 53a'' has the function of limiting the deformation direction of these first elastic legs 54a'' and providing auxiliary restoring force, it is not only possible to save materials to reduce the cost of the plastic spring 50'', but also possible to reduce the first traction part when pressing the head cap 21''. 53a'' provides resistance so that the user can smoothly press the head cap 21''. Accordingly, the thickness of the second traction portion 53b'' can be designed to be smaller than the thickness of the second elastic leg 54b''. While ensuring that the second traction portion 53b'' has the function of limiting the deformation direction of these second elastic legs 54b'' and providing auxiliary restoring force, it can not only save materials to reduce the cost of the plastic spring 50'', but also reduce the resistance provided by the second traction portion 53b'' when pressing the head cap 21'', so that the user can smoothly press the head cap 21''.

[0333] Based on the role of the first traction portion 53a'' and the second traction portion 53b'' in the plastic spring 50'' of the utility model, in some other embodiments of the utility model, the width dimension of the first traction portion 53a'' can be smaller than the width dimension of the first elastic leg 54a''. In this way, while ensuring that the first traction portion 53a'' has the function of limiting the deformation direction of these first elastic legs 54a'' and providing auxiliary restoring force, not only can materials be saved to reduce the cost of the plastic spring 50'', but also the outer wall of the first elastic leg 54a'' can be retracted relative to the outer wall of the first elastic leg 54a'', that is, the distance between the outer wall of the first elastic leg 54a'' and the central axis of the plastic spring 50'' is greater than the distance between the first traction portion 53a'' and the central axis of the plastic spring 50''. 53a'' and the distance between the outer wall of the plastic spring 50'' and the central axis of the plastic spring 50''. Accordingly, the width dimension of the second traction portion 53b'' can be smaller than the width dimension of the second elastic leg 54b''. In this way, while ensuring that the second traction portion 53b'' has the function of limiting the deformation direction of these second elastic legs 54b'' and providing auxiliary restoring force, it is not only possible to save materials to reduce the cost of the plastic spring 50'', but also the outer wall of the second elastic leg 54b'' can be retracted relative to the outer wall of the second elastic leg 54b'', that is, the distance between the outer wall of the second elastic leg 54b'' and the central axis of the plastic spring 50'' is greater than the distance between the outer wall of the second traction portion 53b'' and the central axis of the plastic spring 50''.

[0334] In the utility model, the extension direction of the first traction portion 53a'' of the plastic spring 50'' is opposite to the extension direction of the first elastic leg 54a'', so that the thickness of the first traction portion 53a'' can be reduced as much as possible while the first traction portion 53a'' can reliably provide an auxiliary restoring force. For example, in some embodiments, the first elastic leg 54a'' extends spirally in a counterclockwise direction around the central axis of the plastic spring 50'', and the first traction portion 53a'' extends spirally in a clockwise direction around the central axis of the plastic spring 50''. In this way, when the plastic spring 50'' is squeezed, on the one hand, the first traction portion 53a'' can pull these first elastic legs 54a'' to limit the deformation direction of these first elastic legs 54a'' to the height direction of the plastic spring 50'' and prevent these first elastic legs 54a'' from expanding all around. On the other hand, the first traction portion 53a'' is compressed in the height direction, so that after the pressure applied to the plastic spring 50'' is cancelled, the first traction portion 53a'' can provide auxiliary restoring force for the plastic spring 50'' to restore its initial state. On the other hand, the thickness of the first traction portion 53a'' can be further reduced, which not only saves material but also increases the deformation amount of the plastic spring 50''. Specifically, since the thickness of the first traction portion 53a ″ can be thinner, after the plastic spring 50 ″ is compressed, the distance between adjacent first elastic legs 54a ″ in the height direction can be closer, thereby increasing the deformation amount of the plastic spring 50 ″.

[0335] Correspondingly, the extension direction of the second traction portion 53b'' of the plastic spring 50'' is opposite to the extension direction of the second elastic leg 54b'', so that the thickness of the second traction portion 53b'' can be reduced as much as possible while the second traction portion 53b'' can reliably provide an auxiliary restoring force. For example, in some embodiments, the second elastic leg 54b'' extends spirally in a clockwise direction around the central axis of the plastic spring 50'', and the second traction portion 53b'' extends spirally in a counterclockwise direction around the central axis of the plastic spring 50''. In this way, when the plastic spring 50'' is squeezed, on the one hand, the second traction portion 53b'' can pull these second elastic legs 54b'' to limit the deformation direction of these second elastic legs 54b'' to the height direction of the plastic spring 50'' and prevent these second elastic legs 54b'' from expanding all around. On the other hand, the second traction portion 53b'' is compressed in the height direction, so that after the pressure applied to the plastic spring 50'' is cancelled, the second traction portion 53b'' can provide auxiliary restoring force for the plastic spring 50'' to restore its initial state. On the other hand, the thickness of the second traction portion 53b'' can be further reduced, which not only saves material but also increases the deformation amount of the plastic spring 50''. Specifically, since the thickness of the second traction portion 53b″ can be thinner, after the plastic spring 50″ is compressed, the distance between adjacent second elastic legs 54b″ in the height direction can be closer, thereby increasing the deformation of the plastic spring 50″.

[0336] Continue to attach Figure 77 to Figure 79The first traction portion 53a'' includes a plurality of first traction segments 531a'', one end of the first traction segment 531a'' extends to and is connected to one of the two adjacent first elastic legs 54a'', and the other end extends to and is connected to the other of the two adjacent first elastic legs 54a'', and the upper ring body 51'' is not connected to the top first traction segment 531a'', so that the plastic spring 50'' can avoid forming a gap between the upper ring body 51'', the first elastic leg 54a'' and the top first traction segment 531a''. The plastic spring 50'' is formed into a triangular structure, so that when the plastic spring 50'' is squeezed, the distance between the upper ring body 51'' and the uppermost first traction segment 531a'' can be reduced. Accordingly, the first assembly ring 56a'' is not connected to the lowermost first traction segment 531a''. In this way, the plastic spring 50'' can avoid forming a triangular structure between the first assembly ring 56a'', the first elastic leg 54a'' and the lowermost first traction segment 531a'', so that when the plastic spring 50'' is squeezed, the distance between the first assembly ring 56a'' and the lowermost first traction segment 531a'' can be reduced. In other words, the entire height position of the upper section 501'' of the plastic spring 50'' can be compressed, so as to increase the deformation amount of the plastic spring 50''.

[0337] Correspondingly, the second traction portion 53b'' includes a plurality of second traction segments 531b'', one end of the second traction segment 531b'' extends to and is connected to one of the two adjacent second elastic legs 54b'', the other end extends to and is connected to the other of the two adjacent second elastic legs 54b'', and the second assembly ring 56b'' is not connected to the uppermost second traction segment 531b'', so that the plastic spring 50'' can avoid being connected between the second assembly ring 56b'', the second elastic leg 54b'' and the uppermost second traction segment 531b''. 1b'', so that when the plastic spring 50'' is squeezed, the distance between the second assembly ring 56b'' and the second traction segment 531b'' at the top can be reduced. Accordingly, the lower ring body 52'' is not connected to the second traction segment 531b'' at the bottom. In this way, the plastic spring 50'' can avoid forming a triangular structure between the lower ring body 52'', the second elastic leg 54b'' and the second traction segment 531b'' at the bottom, so that when the plastic spring 50'' is squeezed, the distance between the lower ring body 52'' and the second traction segment 531b'' at the bottom can be reduced. In other words, the entire height position of the lower section of the plastic spring 50'' can be compressed, so as to increase the deformation amount of the plastic spring 50''.

[0338] Reference Figure 77 to Figure 79 , from a side view, the first traction section 531a'' of the upper section 501'' extends obliquely between adjacent first elastic legs 54a''. For example, the extension direction of the first traction section 531a'' is opposite to the extension direction of the first elastic legs 54a''. In this way, when the plastic spring 50'' is squeezed, the first traction section 531a'' can not only pull these first elastic legs 54a'' to prevent these first elastic legs 54a'' from expanding to the surroundings, but also provide auxiliary restoring force after the external force squeezing the plastic spring 50'' is removed. In addition, from a top view, the first traction section 531a'' extends in an arc shape between two adjacent first elastic legs 54a'', so that the shape of the first traction section 531a'' matches the overall shape of the plastic spring 50'', thereby facilitating the plastic spring 50'' to be fitted onto the connecting tube 243'' of the drive rod 24'' and the head cap mounting portion 212'' of the head cap 21''.

[0339] Accordingly, please refer to the attached Figure 77 to Figure 79From a side view, the second traction section 531b'' of the lower section 502'' extends obliquely between two adjacent second elastic legs 54b''. For example, the extension direction of the second traction section 531b'' is opposite to the extension direction of the second elastic legs 54b''. In this way, when the plastic spring 50'' is squeezed, the second traction section 531b'' can not only pull these second elastic legs 54b'' to prevent these second elastic legs 54b'' from expanding around, but also provide auxiliary restoring force after the external force squeezing the plastic spring 50'' is removed. In addition, when viewed from the side, the second traction segment 531b'' extends in an arc shape between two adjacent second elastic legs 54b'', so that the shape of the second traction segment 531b'' matches the overall shape of the plastic spring 50'', thereby facilitating the plastic spring 50'' to be fitted onto the connecting tube 243'' of the drive rod 24'' and the head cap mounting portion 212'' of the head cap 21''.

[0340] Next, refer to the attached Figure 77 to Figure 79 In the utility model, a parallelogram structure is formed between two adjacent first elastic legs 54a'' of the upper section 501'' and two adjacent first traction segments 531a'' connected to the two first elastic legs 54a'', so that when the user presses the head cap 21'', the plastic spring 50'' can be smoothly squeezed and deformed. Correspondingly, a parallelogram structure is formed between two adjacent arc second elastic legs 54b'' of the lower section 502'' and two adjacent second traction segments 531b'' connected to the two second elastic legs 54b'', so that when the user presses the head cap 21'', the plastic spring 50'' can be smoothly squeezed and deformed.

[0341] Next, refer to the attached Figure 77 to Figure 79In the utility model, a "Z"-shaped structure is formed between any one of the first elastic legs 54a'' of the upper section 501'' and two adjacent first traction segments 531a'' connected to the first elastic leg 54a'' in the height direction. In this way, when the plastic spring 50'' is squeezed, these first traction segments 531a'' can provide consistent traction force at different height positions of the first elastic leg 54a'' to limit the deformation direction of the first elastic leg 54a'' in the height direction of the plastic spring 50'', thereby preventing the plastic spring 50'' from expanding in all directions. Correspondingly, a "Z"-shaped structure is formed between any one of the second elastic legs 54b'' of the lower section 502'' and two second traction segments 531b'' adjacent in the height direction and connected to the second elastic leg 54b'', so that when the plastic spring 50'' is squeezed, these second traction segments 531b'' can provide consistent traction force at different height positions of the second elastic leg 54b'' to limit the deformation direction of the second elastic leg 54b'' to the height direction of the plastic spring 50'', thereby preventing the plastic spring 50'' from expanding in all directions.

[0342] Next, refer to the attached Figure 77 to Figure 79 In the present utility model, an "X"-shaped structure is formed between any one of the first elastic legs 54a'' of the upper section 501'' and two adjacent first traction segments 531a'' connected to the first elastic legs 54a'' in the horizontal direction, so that when the external force applied to the plastic spring 50'' is cancelled, the first elastic legs 54a'' and the first traction segments 531a'' can cooperate with each other to ensure that the plastic spring 50'' is restored to its initial state. Correspondingly, an "X"-shaped structure is formed between any one of the second elastic legs 54b'' of the lower section 502'' and two adjacent second traction segments 531b'' connected to the second elastic legs 54b'' in the horizontal direction, so that when the external force applied to the plastic spring 50'' is cancelled, the second elastic legs 54b'' and the second traction segments 531b'' can cooperate with each other to ensure that the plastic spring 50'' is restored to its initial state.

[0343] Continue to refer to the attached Figure 77 to Figure 79In the present invention, the bottom surface of the first assembly ring 56a'' of the upper section 501'' has at least one positioning protrusion 561a'', and the top surface of the second assembly ring 56b'' of the lower section 502'' has at least one positioning groove 561b'', wherein the positioning protrusion 561a'' of the first assembly ring 56a'' is positioned in the positioning groove 561b'' of the second assembly ring 56b'', so that the first assembly ring 56a'' and the The second assembly ring 56b'' is constructed to maintain a relative position, so that when the plastic spring 50'' is squeezed, the rotation direction of the upper section 501'' is opposite to the rotation direction of the lower section 502'', thereby forming a relative force between the upper section 501'' and the lower section 502'', preventing the upper ring body 51'' from rotating relative to the head cap 21'' and preventing the lower ring body 52'' from rotating relative to the spring seat 40''.

[0344] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A plastic spring, characterized in that: It includes an upper ring body, a lower ring body, a partition ring, a first traction part, a second traction part, at least three first elastic legs and at least three second elastic legs, wherein the first traction part, the second traction part, these first elastic legs and these second elastic legs respectively extend spirally around the central axis of the plastic spring, one end of these first elastic legs extends upward to and is connected to the upper ring body, and the other end extends downward to and is connected to the partition ring, one end of the first traction part extends upward to and is connected to the first elastic leg, and the other end extends downward to and is connected to the first elastic leg, and the first traction part and each of the first elastic legs respectively have at least one connection position, one end of these second elastic legs extends upward to and is connected to the partition ring, and the other end extends downward to and is connected to the lower ring body, one end of the second traction part extends upward to and is connected to the second elastic leg, and the other end extends downward to and is connected to the second elastic leg, and the second traction part and each of the second elastic legs respectively have at least one connection position, wherein the extension direction of the first elastic leg is opposite to the extension direction of the second elastic leg.

2. The plastic spring according to claim 1, wherein, viewed from a top view, the first elastic leg extends spirally in a clockwise direction, the first traction portion extends spirally in a counterclockwise direction, the second elastic leg extends spirally in a counterclockwise direction, and the second traction portion extends spirally in a clockwise direction.

3. The plastic spring according to claim 1, wherein, viewed from a top view, the first elastic leg extends spirally in a counterclockwise direction, the first traction portion extends spirally in a clockwise direction, the second elastic leg extends spirally in a clockwise direction, and the second traction portion extends spirally in a counterclockwise direction. 4 . The plastic spring according to claim 1 , wherein a thickness of the first elastic leg is greater than a thickness of the first traction portion, and a thickness of the second elastic leg is greater than a thickness of the second traction portion.

5. A plastic spring according to any one of claims 1 to 3, wherein the distance between the outer wall of the first elastic leg and the central axis of the plastic spring is greater than or equal to the distance between the outer wall of the first traction portion and the central axis of the plastic spring, and the distance between the outer wall of the second elastic leg and the central axis of the plastic spring is greater than or equal to the distance between the outer wall of the second traction portion and the central axis of the plastic spring.

6. A plastic spring according to any one of claims 1 to 3, wherein the first traction portion comprises a plurality of first traction segments, one end of the first traction segment extends to and is connected to one of two adjacent first elastic legs, the other end extends to and is connected to the other of two adjacent first elastic legs, and the upper ring body and the partition ring are not connected to the first traction segment, when the plastic spring is compressed and the first elastic legs are squeezed and deformed, the first traction segment pulls the two adjacent first elastic legs to prevent the first elastic legs from expanding around the plastic spring, wherein the second traction portion comprises a plurality of second traction segments, one end of the second traction segment extends to and is connected to one of two adjacent second elastic legs, the other end extends to and is connected to the other of two adjacent second elastic legs, and the lower ring body and the partition ring are not connected to the second traction segment, when the plastic spring is compressed and the second elastic legs are squeezed and deformed, the second traction segment pulls the two adjacent second elastic legs to prevent the second elastic legs from expanding around the plastic spring. 7 . The plastic spring according to claim 6 , wherein, from a top view, the first pulling section extends in an arc shape between two adjacent first elastic legs, and the second pulling section extends in an arc shape between two adjacent second elastic legs. 8 . The plastic spring according to claim 6 , wherein, viewed from a side perspective, the first pulling section extends obliquely between two adjacent first elastic legs, and the second pulling section extends obliquely between two adjacent second elastic legs. 9 . The plastic spring according to claim 6 , wherein, viewed from a side view, the first elastic leg and the first pulling section have opposite extending directions, and the second elastic leg and the second pulling section have opposite extending directions.

10. The plastic spring according to claim 6, wherein a parallelogram structure is formed between two adjacent first elastic legs and two adjacent first traction segments connected to the two first elastic legs, and a parallelogram structure is formed between two adjacent second elastic legs and two adjacent second traction segments connected to the two second elastic legs.

11. The plastic spring according to claim 6, wherein a "Z" shaped structure is formed between any one of the first elastic legs and two adjacent first traction segments connected to the first elastic leg in the height direction, and wherein a "Z" shaped structure is formed between any one of the second elastic legs and two adjacent second traction segments connected to the second elastic leg in the height direction.

12. The plastic spring according to claim 6, wherein an "X"-shaped structure is formed between any one of the first elastic legs and two adjacent first traction segments connected to the first elastic leg in a horizontal direction, and an "X"-shaped structure is formed between any one of the second elastic legs and two adjacent second traction segments connected to the second elastic leg in a horizontal direction.

13. A plastic spring, characterized in that: include: An upper section, wherein the upper section includes an upper ring body, a first assembly ring, a first traction portion and at least three first elastic legs, the first traction portion and the first elastic legs respectively extend in a spiral shape around the central axis of the plastic spring, one end of the first elastic legs extends upward to and is connected to the upper ring body, and the other end extends downward to and is connected to the first assembly ring, one end of the first traction portion extends upward to and is connected to the first elastic leg, and the other end extends downward to and is connected to the first elastic leg, and the first traction portion and each of the first elastic legs respectively have at least one connection position; and A lower section, wherein the lower section includes a lower ring body, a second assembly ring, a second traction portion and at least three second elastic legs, the second traction portions and the second elastic legs respectively extend spirally around the central axis of the plastic spring, one end of the second elastic legs extends upward to and is connected to the second assembly ring, and the other end extends downward to and is connected to the lower ring body, one end of the second traction portion extends upward to and is connected to the second elastic leg, and the other end extends downward to and is connected to the second elastic leg, and the second traction portion and each of the second elastic legs respectively have at least one connection position; The first assembly ring and the second assembly ring are assembled with each other, and the first assembly ring and the second assembly ring are constructed to keep their relative positions unchanged, and the extension direction of the first elastic leg is opposite to the extension direction of the second elastic leg.

14. The plastic spring according to claim 13, wherein, viewed from a top view, the first elastic leg extends helically in a clockwise direction, the first traction portion extends helically in a counterclockwise direction, the second elastic leg extends helically in a counterclockwise direction, and the second traction portion extends helically in a clockwise direction.

15. The plastic spring according to claim 13, wherein, viewed from a top view, the first elastic leg extends helically in a counterclockwise direction, the first traction portion extends helically in a clockwise direction, the second elastic leg extends helically in a clockwise direction, and the second traction portion extends helically in a counterclockwise direction. 16 . The plastic spring according to claim 13 , wherein a thickness of the first elastic leg is greater than a thickness of the first traction portion, and a thickness of the second elastic leg is greater than a thickness of the second traction portion.

17. A plastic spring according to any one of claims 13 to 15, wherein the distance between the outer wall of the first elastic leg and the central axis of the plastic spring is greater than or equal to the distance between the outer wall of the first traction portion and the central axis of the plastic spring, and the distance between the outer wall of the second elastic leg and the central axis of the plastic spring is greater than or equal to the distance between the outer wall of the second traction portion and the central axis of the plastic spring.

18. A plastic spring according to any one of claims 13 to 15, wherein the bottom surface of the first assembly ring has at least one positioning protrusion, and the top surface of the second assembly ring has at least one positioning groove, and the positioning protrusion of the first assembly ring is positioned in the positioning groove of the second assembly ring, so that the first assembly ring and the second assembly ring are constructed to remain in unchanged relative position.

19. Lotion pump, characterized in that include: A valve; a spring seat; A pump body, wherein the pump body has a pump body space and a liquid inlet channel and a top opening respectively connected to the pump body space, the valve is arranged in the pump body space of the pump body, and the valve is arranged to open or close the liquid inlet channel of the pump body; A liquid taking unit, wherein the liquid taking unit further includes a head cap, a piston, a piston seat and a driving rod and has a movable space, wherein the piston seat includes a seat body and a liquid guide tube extending upward from the seat body as a whole, the liquid guide tube has a liquid guide hole and at least one liquid inlet hole connected to the liquid guide hole, the driving rod has a rod body channel, the head cap has a head cap channel, the top of the liquid guide tube is fixedly mounted on the driving rod, the top of the driving rod is fixedly mounted on the head cap, the rod body channel of the driving rod is connected to the liquid guide hole of the liquid guide tube and the head cap channel of the head cap, and The liquid taking unit forms the movable space between the seat body and the bottom of the driving rod, the piston is movably arranged in the movable space in a manner of surrounding the outside of the liquid guiding tube, and the top of the piston can be in contact with or away from the bottom of the driving rod, and the bottom of the piston can be away from or in contact with the seat body, wherein the liquid taking unit is movably arranged in the pump body space of the pump body in a manner of the outer wall of the piston being in contact with the inner wall of the pump body, wherein the spring seat is sleeved on the middle part of the driving rod, and the spring seat is fixedly installed in the pump body space of the pump body to prevent the liquid taking unit from being separated from the pump body upward; as well as The plastic spring according to any one of claims 1 to 12, wherein the upper ring body of the plastic spring abuts against the liquid extraction unit, and the lower ring body of the plastic spring abuts against the spring seat.

20. Lotion pump, characterized in that include: A valve; a spring seat; A pump body, wherein the pump body has a pump body space and a liquid inlet channel and a top opening respectively connected to the pump body space, the valve is arranged in the pump body space of the pump body, and the valve is arranged to open or close the liquid inlet channel of the pump body; A liquid taking unit, wherein the liquid taking unit further includes a head cap, a piston, a piston seat and a driving rod and has a movable space, wherein the piston seat includes a seat body and a liquid guide tube extending upward from the seat body as a whole, the liquid guide tube has a liquid guide hole and at least one liquid inlet hole connected to the liquid guide hole, the driving rod has a rod body channel, the head cap has a head cap channel, the top of the liquid guide tube is fixedly mounted on the driving rod, the top of the driving rod is fixedly mounted on the head cap, the rod body channel of the driving rod is connected to the liquid guide hole of the liquid guide tube and the head cap channel of the head cap, and The liquid taking unit forms the movable space between the seat body and the bottom of the driving rod, the piston is movably arranged in the movable space in a manner of surrounding the outside of the liquid guiding tube, and the top of the piston can be in contact with or away from the bottom of the driving rod, and the bottom of the piston can be away from or in contact with the seat body, wherein the liquid taking unit is movably arranged in the pump body space of the pump body in a manner of the outer wall of the piston being in contact with the inner wall of the pump body, wherein the spring seat is sleeved on the middle part of the driving rod, and the spring seat is fixedly installed in the pump body space of the pump body to prevent the liquid taking unit from being separated from the pump body upward; as well as The plastic spring according to any one of claims 13 to 18, wherein the upper ring body of the plastic spring abuts against the liquid extraction unit, and the lower ring body of the plastic spring abuts against the spring seat.

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