lotion bottle and its pump

Abstract

This utility model discloses an emulsion bottle and its press pump. The press pump includes a pump housing, a valve body, a connecting rod, a piston, a locking cap, a locking pin, a head cap, and an elastic element. The valve body is installed in the pump chamber of the pump housing and can open and close the bottom channel of the pump housing. The connecting rod includes a piston seat and an upwardly extending rod. The piston is movably fitted into the rod and the pump chamber. The inner wall of the locking cap has a locking protrusion. The locking cap is fixedly fitted into the top of the rod and its bottom can abut against the top of the piston. The outer wall of the locking pin has a spirally extending track groove and a bottom positioning groove and a top positioning groove located at the bottom and top of the track groove, respectively. The bottom of the locking pin is movably installed in the rod channel of the rod. The locking pin channel and the rod channel of the locking pin are connected. The locking protrusion of the locking cap protrudes into the track groove and can slide to the bottom positioning groove and the top positioning groove. The head cap is installed on the top of the locking pin. The head cap channel and the locking pin channel of the head cap are connected. The opposite ends of the elastic element abut against the pump housing and the piston seat, respectively.

Description

Technical Field

[0001] This utility model relates to a pump body, and more particularly to a lotion bottle and its press pump. Background Technology

[0002] A lotion bottle is a container for holding lotion-like fluids, such as facial cleansers and shampoos. Users dispense the lotion-like fluid by pressing a pump on the bottle. For example, Chinese utility model patent CN212354969U discloses a pump that allows users to dispense lotion-like fluids by pressing the pump head. The existing press pump can switch between a working state and a locking state. The process of switching from the working state to the locking state is as follows: First, rotate the press head clockwise, and the connecting column rotates with the press head. The locking protrusion leaves the upper locking groove and aligns with the axial groove. Second, press the press head down, and the connecting column and the press head move downward together. When the locking protrusion aligns with the lower locking groove, rotate the press head clockwise again, and the locking protrusion locks with the lower locking groove. During the movement, the main column remains relatively stationary. The process of switching from the locking state to the working state is as follows: First, rotate the press head counterclockwise, and the connecting column rotates with the press head. The locking protrusion leaves the lower locking groove and aligns with the axial groove. Second, pull the press head up, and the connecting column and the press head move upward together. When the locking protrusion aligns with the upper locking groove, rotate the press head counterclockwise again, and the locking protrusion locks with the upper locking groove. While existing push pumps can switch between working and locked states, both switching from working to locked and vice versa requires the coordination of multiple actions, making the operation cumbersome. Utility Model Content

[0003] One object of this invention is to provide a lotion bottle and its press pump, wherein the press pump can be conveniently switched between a locked state and an unlocked state.

[0004] One objective of this invention is to provide a lotion bottle and its pump, wherein the user can switch the pump from the locked state to the unlocked state by simply rotating the pump cap in one direction, and switch the pump from the unlocked state to the locked state by simply rotating the cap in the opposite direction, thus allowing the pump to be conveniently switched between the locked and unlocked states.

[0005] One objective of this invention is to provide a lotion bottle and its pump. When the pump is in the locked state, the locking protrusion of the pump cap is held in the top positioning groove of the locking post. When the user rotates the cap in one direction, the locking protrusion of the cap exits the top positioning groove and slides along the track groove of the locking post. When the locking protrusion of the cap slides into the bottom positioning groove of the locking post, the pump is switched to the unlocked state. Conversely, when the user rotates the cap in the opposite direction, the locking protrusion of the cap protrudes from the bottom positioning groove and slides along the track groove. When the locking protrusion of the cap slides into the top positioning groove, the pump is switched to the locked state.

[0006] One objective of this invention is to provide a lotion bottle and its press pump, wherein the elastic element of the press pump is a plastic spring, and the specific structure of the elastic element is such that when the elastic element is pressed, it will not expand outwards, and the top and bottom rings of the elastic element will not rotate, so as to avoid the elastic element rubbing against the pump housing.

[0007] One object of this utility model is to provide a lotion bottle and its press pump, wherein the valve body of the press pump and the elastic element are integrated to facilitate the assembly of the press pump.

[0008] According to one aspect of the present invention, a push-button pump is provided, comprising:

[0009] A pump housing having a pump chamber and a bottom channel communicating with the pump chamber;

[0010] The valve body is configured to open and close the bottom channel of the pump housing;

[0011] A connecting rod, comprising a piston seat and a rod extending upward from the piston seat, the rod having a rod channel and a liquid inlet channel communicating with the rod channel;

[0012] A piston, which is movably fitted onto the rod and the pump chamber, which is movably mounted onto the pump housing, prevents the inlet channel from communicating with the pump chamber when the bottom of the piston abuts against the piston seat;

[0013] A locking cover with a locking protrusion on its inner wall is fixedly fitted onto the top of the rod, and the bottom of the locking cover can abut against the top of the piston.

[0014] The locking pin has a track groove extending spirally along the height direction on its outer wall, and a bottom positioning groove and a top positioning groove located at the bottom and top of the track groove, respectively. The bottom of the locking pin is movably mounted to the rod channel of the rod body. The locking pin channel of the locking pin communicates with the rod channel of the rod body. The locking protrusion of the locking cover protrudes into the track groove of the locking pin and can slide to one of the bottom positioning groove and the top positioning groove.

[0015] A cap, which is installed on the top of the locking pin, wherein the cap channel communicates with the locking pin channel; and

[0016] The elastic element has its opposite ends abutting against the pump housing and the piston seat, respectively.

[0017] According to one embodiment of the present invention, the lock cover includes a cover ring and a sleeve extending downward from the cover ring. The lock protrusion of the lock cover protrudes from the inner wall of the cover ring. The top of the rod is inserted into the sleeve hole of the sleeve, and the end face of the rod abuts against the cover ring. The bottom of the lock pin is inserted into the rod channel of the rod after passing through the annular hole of the cover ring.

[0018] According to one embodiment of the present invention, the press pump includes a pump cover having a cover hole, the pump cover being mounted on the top of the pump housing, and the top of the locking pin passing through the cover hole of the pump cover.

[0019] According to one embodiment of the present invention, the pump cover has a limiting cylinder, which is inserted into the pump chamber of the pump housing to limit the maximum upward movement of the piston.

[0020] According to one embodiment of the present invention, the pump cover has a positioning groove extending along the height direction, and the outer wall of the lock cover has a positioning protrusion extending along the height direction. The positioning protrusion of the lock cover is slidably disposed in the positioning groove of the pump cover to restrict the movement direction of the lock cover to the height direction.

[0021] According to one embodiment of the present invention, the elastic element is a plastic spring.

[0022] According to one embodiment of the present invention, the valve body is integrally formed on the bottom of the elastic element.

[0023] According to one embodiment of the present invention, the elastic element includes a top ring, a middle ring, a bottom ring, a plurality of top extension legs, a plurality of inclined top traction legs, a plurality of bottom extension legs, and a plurality of inclined bottom traction legs. The top ring, the middle ring, and the bottom ring are spaced apart from each other and arranged parallel to each other. Each of the top extension legs extends spirally between the top ring and the middle ring. The opposite ends of each of the top traction legs are respectively connected to two adjacent top extension legs, and the inclination direction of the top traction legs is opposite to that of the top extension legs. Each of the bottom extension legs extends spirally between the middle ring and the bottom ring. The opposite ends of each of the bottom traction legs are respectively connected to two adjacent bottom extension legs, and the inclination direction of the bottom traction legs is opposite to that of the bottom extension legs.

[0024] According to one embodiment of the present invention, the spiral direction of the top extension leg is opposite to that of the bottom extension leg.

[0025] According to one embodiment of the present invention, the valve body includes a valve plate and a valve leg, the valve plate is surrounded by the bottom ring, and the opposite ends of the valve leg extend to the bottom ring and the valve plate, respectively.

[0026] According to another aspect of the present invention, the present invention provides a lotion bottle, which includes a bottle body and a pump, wherein the pump is mounted on the bottle body, and wherein the pump further includes:

[0027] A pump housing having a pump casing and a bottom channel communicating with the pump casing;

[0028] The valve body is configured to open and close the bottom channel of the pump housing;

[0029] A connecting rod, comprising a piston seat and a rod extending upward from the piston seat, the rod having a rod channel and a liquid inlet channel communicating with the rod channel;

[0030] A piston, which is movably fitted onto the rod and the pump chamber, which is movably mounted onto the pump housing, prevents the inlet channel from communicating with the pump chamber when the bottom of the piston abuts against the piston seat;

[0031] A locking cover with a locking protrusion on its inner wall is fixedly fitted onto the top of the rod, and the bottom of the locking cover can abut against the top of the piston.

[0032] The locking pin has a track groove extending spirally along the height direction on its outer wall, and a bottom positioning groove and a top positioning groove located at the bottom and top of the track groove, respectively. The bottom of the locking pin is movably mounted to the rod channel of the rod body. The locking pin channel of the locking pin communicates with the rod channel of the rod body. The locking protrusion of the locking cover protrudes into the track groove of the locking pin and can slide to one of the bottom positioning groove and the top positioning groove.

[0033] A cap, which is installed on the top of the locking pin, wherein the cap channel communicates with the locking pin channel; and

[0034] The elastic element has its opposite ends abutting against the pump housing and the piston seat, respectively. Attached Figure Description

[0035] Figure 1 This is a cross-sectional schematic diagram of a lotion bottle in a preferred embodiment of the present invention.

[0036] Figure 2 This is a cross-sectional schematic diagram of another state of the emulsion bottle according to the above-described preferred embodiment of the present invention.

[0037] Figure 3 This is a perspective view of a pump on a lotion bottle in a locked state according to the above-described preferred embodiment of the present invention.

[0038] Figure 4 This is a perspective view of the pump of the lotion bottle in the locked state according to the above-described preferred embodiment of the present invention.

[0039] Figure 5 This is an exploded view of the pump of the lotion bottle according to the above-described preferred embodiment of the present invention.

[0040] Figure 6 This is an exploded view of the pump of the lotion bottle according to the above-described preferred embodiment of the present invention.

[0041] Figure 7 This is a three-dimensional cross-sectional view of the pump of the lotion bottle in the locked state according to the above-described preferred embodiment of the present invention.

[0042] Figure 8 This is a cross-sectional schematic diagram of one of the usage processes of the pump of the lotion bottle in unlocking according to the above-described preferred embodiment of the present invention.

[0043] Figure 9This is a cross-sectional schematic diagram of the second usage process of the pump of the lotion bottle in the unlocked state according to the above-described preferred embodiment of the present invention.

[0044] Figure 10 This is a cross-sectional schematic diagram of the third usage process of the pump of the lotion bottle in the unlocked state according to the above-described preferred embodiment of the present invention.

[0045] Figure 11 This is a cross-sectional schematic diagram of the use process of the pump of the lotion bottle in the unlocked state according to the above-described preferred embodiment of the present invention.

[0046] Figure 12 This is a cross-sectional schematic diagram of the fifth step in the use of the pump of the lotion bottle in the unlocked state according to the above-described preferred embodiment of the present invention.

[0047] Figure 13 This is a cross-sectional schematic diagram of the sixth usage process of the pump of the lotion bottle in the unlocked state according to the above-described preferred embodiment of the present invention.

[0048] Figure 14 This is an exploded view of a partial location of the pump on the lotion bottle according to the above-described preferred embodiment of the present invention.

[0049] Figure 15 This is a perspective view of a partial position of the pump on the lotion bottle according to the above-described preferred embodiment of the present invention.

[0050] Figure 16 This is a cross-sectional schematic diagram showing the partial position of the pump of the lotion bottle according to the above-described preferred embodiment of the present invention when the pump is in the locked state.

[0051] Figure 17 This is a cross-sectional schematic diagram of the unlocking process of the press pump of the lotion bottle according to the above-described preferred embodiment of the present invention at the aforementioned partial position.

[0052] Figure 18 This is a cross-sectional schematic diagram showing the partial location of the pump of the lotion bottle according to the above-described preferred embodiment of the present invention when the pump is in the unlocked state.

[0053] Figure 19 This is a cross-sectional view of a modified example of the pump of the lotion bottle according to the above-described preferred embodiment of the present invention in the unlocked state. Detailed Implementation

[0054] Before detailing any embodiment of this invention, it should be understood that the invention, in its application, is not limited to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention can have other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0055] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of elements can be multiple. The term "a" should not be construed as a limitation on the number.

[0056] Refer to the accompanying drawings of the specification of this utility model. Figures 1 to 18 A preferred embodiment of the present invention will be disclosed and described in the following description, wherein the emulsion bottle includes a pump 10 and a bottle body 20, the pump 10 being mounted on the bottle body 20, the pump 10 being used to pump out fluids such as emulsion contained in the bottle body 20.

[0057] Specifically, the press pump 10 includes a pump housing 11, a valve body 12, an elastic element 13, a connecting rod 14, a piston 15, a locking cover 16, a locking pin 17, and a head cap 18.

[0058] More specifically, the pump housing 11 has a pump chamber 111 and a bottom channel 112, the bottom channel 112 communicating with the pump chamber 111 at the bottom of the pump housing 11. The valve body 12 is configured to open and close the bottom channel 112 of the pump housing 11, wherein when the valve body 12 opens the bottom channel 112 of the pump housing 11, the emulsion fluid in the bottle 20 is allowed to enter the pump chamber 111 through the bottom channel 112 of the pump housing 11, and when the valve body 12 closes the bottom channel 112 of the pump housing 11, the fluid in the pump chamber 111 of the pump housing 11 is prevented from entering the bottle 20 through the bottom channel 112.

[0059] To make the press pump 10 adaptable to bottles 20 of different heights, a straw 113 can be inserted into the bottom of the pump housing 11, with the bottom of the straw 113 extending into the bottom of the bottle 20. Thus, when the valve body 12 opens the bottom channel 112 of the pump housing 11, the emulsion fluid at the bottom of the bottle 20 is allowed to enter the pump chamber 111 through the straw 113 and the bottom channel 112 of the pump housing 11.

[0060] Reference Appendix Figures 5 to 13 The connecting rod 14 includes a piston seat 141 and a rod 142 extending upward from the piston seat 141. The rod 142 has a rod channel 1421 and a liquid inlet channel 1422 communicating with the rod channel 1421. The piston 15 is movably fitted onto the rod 142 and is movably mounted on the pump chamber 111 of the pump housing 11. When the bottom of the piston 15 abuts against the piston seat 141, the piston 15 prevents the liquid inlet channel 1422 of the rod 142 from communicating with the pump chamber 111 of the pump housing 11. When the bottom of the piston 15 leaves the piston seat 141, the piston 15 allows the liquid inlet channel 1422 of the rod 142 to communicate with the pump chamber 111 of the pump housing 11.

[0061] It is understood that after the bottom of the piston 15 leaves the piston seat 141 and a gap is created between the bottom of the piston 15 and the piston seat 141, the piston 15 allows the liquid inlet channel 1422 of the rod 142 to communicate with the pump chamber 111 of the pump housing 11.

[0062] It is also understood that the outer wall of the piston 15 is fitted to the inner wall of the pump housing 11 to prevent gaps from forming between the outer wall of the piston 15 and the inner wall of the pump housing 11, and the inner wall of the piston 15 is fitted to the outer wall of the rod 142 to prevent gaps from forming between the inner wall of the piston 15 and the outer wall of the rod 142, thereby avoiding leakage when the piston 15 is driven to move within the pump chamber 111 of the pump housing 11.

[0063] The bottom of the elastic element 13 abuts against the pump housing 11, and the top of the elastic element 13 abuts against the piston seat 141 of the connecting rod 14. When the connecting rod 14 moves downward within the pump chamber 111 of the pump housing 11, the piston seat 141 and the pump housing 11 compress the elastic element 13, causing the elastic element 13 to deform and accumulate elastic potential energy. During the process of restoring its initial state, the elastic element 13 pushes the piston seat 141 upward, causing the connecting rod 14 to move upward within the pump chamber 111 of the pump housing 11.

[0064] Preferably, the bottom of the piston seat 141 has a post 1411, which is inserted into the top of the elastic element 13 to prevent the elastic element 13 from sliding and tilting relative to the piston seat 141, thereby ensuring that the top of the elastic element 13 reliably abuts against the piston seat 141.

[0065] In the appendix Figures 1 to 18 In this specific example of the emulsion bottle of the present invention shown, the elastic element 13 is a plastic spring, so that the pump 10 can be made entirely of plastic to facilitate the overall recycling of the pump 10.

[0066] Specifically, the elastic element 13 includes a top ring 131, a middle ring 132, a bottom ring 133, a plurality of top extension legs 134, a plurality of inclined top traction legs 135, a plurality of bottom extension legs 136, and a plurality of inclined bottom traction legs 137. The top ring 131, the middle ring 132, and the bottom ring 133 are spaced apart from each other and arranged parallel to each other. Each of the top extension legs 134 extends spirally between the top ring 131 and the middle ring 132. The opposite ends of each of the top traction legs 135 are respectively connected to two adjacent top extension legs 134, and the inclination direction of the top traction legs 135 and the inclination direction of the top extension legs 134 are... In opposite directions, each of the bottom extension legs 136 extends spirally between the middle ring 132 and the bottom ring 133. The opposite ends of each of the bottom traction legs 137 are connected to two adjacent bottom extension legs 136, and the inclination direction of the bottom traction legs 137 is opposite to that of the bottom extension legs 136. In this way, when the elastic element 13 is compressed, on the one hand, the elastic element 13 will not expand outwards; on the other hand, the top ring 131 can be prevented from rotating relative to the piston seat 141, and the bottom ring 133 can be prevented from rotating relative to the pump housing 11, thereby preventing the elastic element 13 from rubbing against the pump housing 11. Preferably, the spiral direction of the top extension leg 134 is opposite to that of the bottom extension leg 136.

[0067] Preferably, in the appendix Figures 1 to 18In this specific example of the lotion bottle of the present invention shown, the valve body 12 is integrally formed on the bottom of the elastic element 13 to facilitate the assembly of the press pump 10. Specifically, the valve body 12 includes a valve plate 121 and at least one valve leg 122, the bottom ring 133 of the elastic element 13 surrounds the valve plate 121, and the opposite ends of the valve leg 122 extend to the bottom ring 133 and the valve plate 121, respectively. Preferably, there are multiple valve legs 122, for example three, and these valve legs 122 extend curvedly between the bottom ring 133 and the valve plate 121 to increase the stroke of the valve plate 121. Since the bottom of the elastic element 13 abuts against the pump housing 11, the elastic element 13 and the valve leg 122 cooperate to keep the valve plate 121 in the position of closing the bottom channel 112 of the pump housing 11. When the pressure in the pump chamber 111 of the pump housing 11 is less than the pressure in the bottle 20, the emulsion fluid in the bottle 20 can push the valve plate 121 upward when flowing through the bottom channel 112 of the pump housing 11, so that the valve body 12 opens the bottom channel 112 of the pump housing 11. At this time, the valve leg 122 deforms and accumulates elastic potential energy. When the pressure in the pump chamber 111 of the pump housing 11 returns to the same level as the pressure in the bottle 20, the valve leg 122 pulls the valve plate 121 downward during the process of returning to the initial state, so that the valve plate 121 resets and allows the valve body 12 to close the bottom channel 112 of the pump housing 11.

[0068] Optionally, in the appendix Figure 19 In this specific example of the pump 10 of the lotion bottle of the present invention, the valve body 12 is independent of the elastic element 13. The valve body 12 includes the valve plate 121, a plurality of valve legs 122, and a valve ring 123. The valve ring 123 surrounds the valve plate 121, and each valve leg 122 extends between the valve plate 121 and the valve ring 123. The valve ring 123 of the valve body 12 is engaged with the inner wall of the pump housing 11, and the bottom ring 133 of the elastic element 13 is stacked on the valve ring 123. In this way, on the one hand, the valve body 12 can be used to open and close the bottom channel 112 of the pump housing 11; on the other hand, the bottom ring 133 of the elastic element 13 can avoid the valve legs 122 of the valve body 12, preventing the elastic element 13 from affecting the deformability of the valve legs 122.

[0069] Continue to refer to the appendix Figures 5 to 7 , Figures 14 to 18The inner wall of the locking cover 16 has at least one locking protrusion 161, wherein the locking cover 16 is fixedly fitted onto the top of the rod body 142 of the connecting rod 14, and the bottom of the locking cover 16 can abut against the top of the piston 15 to push the piston 15 downward within the pump chamber 111 of the pump housing 11.

[0070] The outer wall of the locking pin 17 has at least one track groove 171, at least one bottom positioning groove 172, and at least one top positioning groove 173. The locking pin 17 also has a locking pin channel 174. The track groove 171 extends spirally along the height direction. The bottom positioning groove 172 is located at the bottom of the track groove 171, and the top positioning groove 173 is located at the top of the track groove 171. The bottom of the locking pin 17 is movably mounted to the rod channel 1421 of the rod body 142, such that the locking pin channel 174 of the locking pin 17 and the rod channel 1421 of the rod body 142 are connected.

[0071] The lock cover 16 is fitted onto the lock post 17. The locking protrusion 161 of the lock cover 16 protrudes into the track groove 171 of the lock post 17. The locking protrusion 161 of the lock cover 16 can slide from the track groove 171 of the lock post 17 into the bottom positioning groove 172 or the top positioning groove 173, and can also slide from the bottom positioning groove 172 or the top positioning groove 173 of the lock post 17 into the track groove 171. When the lock post 17 rotates relative to the lock cover 16, causing the locking protrusion 161 of the lock cover 16 to slide along the track groove 171 of the lock post 17, the lock post 17 moves relative to the lock cover 16 in the height direction.

[0072] The cap 18 has a cap channel 181, and the cap 18 is mounted on the top of the locking pin 17. The cap channel 181 of the cap 18 and the locking pin channel 174 of the locking pin 17 are connected. Specifically, the cap 18 has an insertion pin 182, and the cap channel 181 passes through the insertion pin 182. The insertion pin 182 of the cap 18 is inserted into the top of the locking pin channel 174 of the locking pin 17 to mount the cap 18 on the top of the locking pin 17, thereby connecting the cap channel 181 of the cap 18 and the locking pin channel 174 of the locking pin 17.

[0073] It is worth mentioning that, in order to ensure that the locking pin 17 can be driven by the head cap 18 to rotate synchronously, the outer wall of the insert pin 182 of the head cap 18 has a plurality of first mounting elements 1821 and a plurality of first mounting grooves 1822, and a first mounting groove 1822 is formed between adjacent first mounting elements 1821. Correspondingly, the inner wall of the locking pin 17 has a plurality of second mounting elements 175 and a plurality of second mounting grooves 176, and a second mounting groove 176 is formed between adjacent second mounting elements 175. The first mounting elements 1821 of the insert pin 182 of the head cap 18 are installed in the second mounting grooves 176 of the locking pin 17, and the second mounting elements 175 of the locking pin 17 are installed in the first mounting grooves 1822 of the insert pin 182 of the head cap 18.

[0074] When the press pump 10 is in the locked state, the locking protrusion 161 of the lock cover 16 is held in the top positioning groove 173 of the lock pin 17. At this time, the inner wall of the lock pin 17 that defines the top positioning groove 173 prevents the lock pin 17 from moving relative to the lock cover 16 in the height direction, and the bottom of the cap 18 is pressed so that the cap 18 cannot be pressed.

[0075] When the user rotates the cap 18 in one direction, the cap 18 drives the locking pin 17 to rotate synchronously. As the cap 18 and the locking pin 17 rotate, the locking protrusion 161 of the locking cover 16 first slides from the top positioning groove 173 of the locking pin 17 into the track groove 171, and then slides along the track groove 171 of the locking pin 17, causing the locking pin 17 to move upward relative to the locking cover 16 in the height direction. Finally, it enters the bottom positioning groove 172 of the locking pin 17 to switch to the unlocked state. At this time, the cap 18 can be pressed to pump out the emulsion fluid in the bottle 20. When the user rotates the cap 18 in the opposite direction, the cap 18 drives the locking pin 17 to rotate synchronously. As the cap 18 and the locking pin 17 rotate, the locking protrusion 161 of the lock cover 16 first slides from the bottom positioning groove 172 of the locking pin 17 into the track groove 171, and then slides along the track groove 171 of the locking pin 17, causing the locking pin 17 to move downward relative to the lock cover 16 in the height direction, and finally enters the top positioning groove 173 of the locking pin 17 to switch to the locked state. In other words, the user can switch the press pump 10 between the locked state and the unlocked state simply by rotating the cap 18, so that the press pump 10 can be operated. It is understood that when the press pump 10 is switched to the unlocked state, since the locking protrusion 161 of the lock cover 16 is located in the bottom positioning groove 172 of the lock pin 17, the cap 18, the lock pin 17, the lock cover 16 and the connecting rod 14 move up and down synchronously.

[0076] Reference Appendix Figures 8 to 13During the first stage when the user presses down on the cap 18, the piston 15 remains stationary, and the cap 18, the locking pin 17, the locking cover 16, and the connecting rod 14 move downwards until the bottom of the locking cover 16 abuts against the top of the piston 15. The piston 15 allows the liquid inlet channel 1422 of the rod 142 to communicate with the pump chamber 111 of the pump housing 11. The valve body 12 closes the bottom channel 112 of the pump housing 11, and the elastic element 13 is compressed and deformed to accumulate elastic potential energy. In the second stage when the user presses down on the cap 18, the cap 18, the locking pin 17, the locking cover 16, and the connecting rod 14 continue to move downward, driving the piston 15 to move downward. The valve body 12 continues to close the bottom channel 112 of the pump housing 11. The elastic element 13 is further compressed and deformed to accumulate elastic potential energy. The pressure in the pump chamber 111 of the pump housing 11 increases. The emulsion fluid in the pump chamber 111 of the pump housing 11 is discharged through the inlet channel 1422 of the rod 142, the rod channel 1421, the locking pin channel 174 of the locking pin 17, and the cap channel 181 of the cap 18.

[0077] During the first stage of the user releasing the cap 18, the piston 15 remains stationary. As the elastic element 13 returns to its initial state, it pushes the connecting rod 14, the locking cap 16, the locking pin 17, and the cap 18 upwards until the piston seat 141 abuts against the bottom of the piston 15. The piston 15 prevents the liquid inlet channel 1422 of the rod 142 from communicating with the pump chamber 111 of the pump housing 11. The valve body 12 opens the bottom channel 112 of the pump housing 11 to allow the emulsion in the bottle 20 to enter the pump chamber 111 through the straw 113 and the bottom channel 112. In the second phase after the user releases the cap 18, the elastic element 13 continues to push the connecting rod 14, the locking cap 16, the locking pin 17, the cap 18, and the piston 15 upwards as it returns to its initial state. The pressure in the pump chamber 111 of the pump housing 11 is lower than the pressure inside the bottle 20, allowing the emulsion inside the bottle 20 to continue flowing into the pump chamber 111 via the straw 113 and the bottom channel 112. When the pressure inside the pump chamber 111 of the pump housing 11 returns to the same level as the pressure inside the pump chamber 111, the valve body 12 closes the bottom channel 112 of the pump housing 11. This process repeats, allowing the user to pump the emulsion fluid from the bottle 20 using the press pump 10.

[0078] Preferably, in the appendix Figures 1 to 18In this specific example of the lotion bottle of the present invention shown, the locking cap 16 has two locking protrusions 161, which are symmetrically arranged. Correspondingly, the locking post 17 also has two track grooves 171, two bottom positioning grooves 172, and two top positioning grooves 173. Each locking protrusion 161 of the locking cap 16 protrudes into each track groove 171 of the locking post 17. In this way, when the press pump 10 is switched to the unlocked state and the cap 18 is pressed, both sides of the locking post 17 can apply downward pressure to the locking cap 16 so that the locking cap 16 is subjected to balanced force.

[0079] The press pump 10 includes a pump cover 19 with a cover hole 191. The pump cover 19 is mounted on the top of the pump housing 11. The top of the locking pin 17 passes through the cover hole 191 of the pump cover 19. The pump cover 19 is used to cover the locking cover 16, making the locking cover 16 visually invisible and preventing the locking cover 16 from disengaging from the pump chamber 111 of the pump housing 11, thereby ensuring the reliability of the press pump 10. When the press pump 10 is in the locked state, the pump cover 19 presses against the cap 18, so that the cap 18 cannot be pressed.

[0080] It is worth mentioning that the specific manner in which the pump cover 19 is installed on the top of the pump housing 11 is not limited in the emulsion bottle of this utility model. For example, in the appendix Figures 1 to 18 In this specific example of the emulsion bottle of the present invention shown, the pump cap 19 has a slot 192 into which the top of the pump housing 11 is inserted, so that the pump cap 19 is reliably mounted on the top of the pump housing 11.

[0081] Preferably, the pump cover 19 has a limiting cylinder 193, which is inserted into the pump chamber 111 of the pump housing 11 to limit the maximum upward movement of the piston 15. In other words, during the process of the piston seat 141 of the connecting rod 14 pushing the piston 15 upward, the limiting cylinder 193 of the pump cover 19 is used to block the top of the piston 15.

[0082] Furthermore, the pump cover 19 has at least one positioning groove 194 extending along the height direction, and the outer wall of the lock cover 16 has at least one positioning protrusion 162 extending along the height direction. The positioning protrusion 162 of the lock cover 16 is slidably disposed in the positioning groove 194 of the pump cover 19 to restrict the movement direction of the lock cover 16 to the height direction, that is, the lock cover 16 is prevented from rotating.

[0083] Further, please refer to the appendix. Figure 5 , Figure 6 , Figures 14 to 18 The locking cover 16 includes a cover ring 163 and a sleeve 164 extending downward from the cover ring. The locking protrusion 161 of the locking cover 16 protrudes from the inner wall of the cover ring 163. The top of the rod 142 is inserted into the sleeve hole 1641 of the sleeve 164, and the end face of the rod 142 abuts against the cover ring 163. The bottom of the locking pin 17 is inserted into the rod channel 1421 of the rod 142 after passing through the annular hole 1631 of the cover ring 163. The bottom of the sleeve 164 can abut against the top of the piston 15 to push the piston 15 downward.

[0084] Reference Appendix Figures 1 to 13 The press pump 10 further includes a thread 101 with a threaded through hole 1011. The thread 101 is installed on the top of the pump housing 11 such that the top of the pump housing 11 passes through the threaded through hole 1011. The thread 101 can be screwed onto the bottle opening of the bottle body 20 to press the overlapping edge 114 of the pump housing 11 against the opening edge of the bottle body 20, thereby installing the press pump 10 onto the bottle body 20. Preferably, the press pump 10 further includes a sealing gasket 102, which is disposed on the overlapping edge 114 of the pump housing 11. After the press pump 10 is installed onto the bottle body 20 by the thread 101, the sealing gasket 102 is located between the overlapping edge 114 of the pump housing 11 and the bottle opening of the bottle body 20 to prevent leakage.

[0085] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A press pump, characterized by, include: A pump housing having a pump chamber and a bottom channel communicating with the pump chamber; The valve body is configured to open and close the bottom channel of the pump housing; A connecting rod, comprising a piston seat and a rod extending upward from the piston seat, the rod having a rod channel and a liquid inlet channel communicating with the rod channel; A piston, which is movably fitted onto the rod and the pump chamber, which is movably mounted onto the pump housing, prevents the inlet channel from communicating with the pump chamber when the bottom of the piston abuts against the piston seat; A locking cover with a locking protrusion on its inner wall is fixedly fitted onto the top of the rod, and the bottom of the locking cover can abut against the top of the piston. The locking pin has a track groove extending spirally along the height direction on its outer wall, and a bottom positioning groove and a top positioning groove located at the bottom and top of the track groove, respectively. The bottom of the locking pin is movably mounted to the rod channel of the rod body. The locking pin channel of the locking pin communicates with the rod channel of the rod body. The locking protrusion of the locking cover protrudes into the track groove of the locking pin and can slide to one of the bottom positioning groove and the top positioning groove. A cap, which is installed on the top of the locking pin, the cap channel communicating with the locking pin channel; and The elastic element has its opposite ends abutting against the pump housing and the piston seat, respectively.

2. The press pump according to claim 1, wherein the locking cover includes a cover ring and a sleeve extending downward from the cover ring, the locking protrusion of the locking cover protrudes from the inner wall of the cover ring, the top of the rod is inserted into the sleeve hole of the sleeve, and the end face of the rod abuts against the cover ring, and the bottom of the locking pin is inserted into the rod channel of the rod after passing through the annular hole of the cover ring.

3. The push-button pump according to claim 1, wherein the push-button pump includes a pump cover having a cover hole, the pump cover being mounted on the top of the pump housing, and the top of the locking pin passing through the cover hole of the pump cover.

4. The push pump according to claim 3, wherein the pump cover has a limiting cylinder inserted into the pump chamber of the pump housing to limit the maximum upward movement of the piston.

5. The push pump according to claim 3, wherein the pump cover has a positioning groove extending along the height direction, the outer wall of the lock cover has a positioning protrusion extending along the height direction, and the positioning protrusion of the lock cover is slidably disposed in the positioning groove of the pump cover to restrict the movement direction of the lock cover to the height direction.

6. The push pump according to any one of claims 1 to 5, wherein the elastic element is a plastic spring.

7. The push pump according to claim 6, wherein the valve body is integrally formed on the bottom of the elastic element.

8. The press pump according to claim 7, wherein the elastic element comprises a top ring, a middle ring, a bottom ring, a plurality of top extension legs, a plurality of inclined top traction legs, a plurality of bottom extension legs, and a plurality of inclined bottom traction legs, the top ring, the middle ring, and the bottom ring being spaced apart from each other and arranged parallel to each other, each of the top extension legs extending helically between the top ring and the middle ring, each of the top traction legs having opposite ends connected to two adjacent top extension legs, and the inclination direction of the top traction legs being opposite to the inclination direction of the top extension legs, each of the bottom extension legs extending helically between the middle ring and the bottom ring, each of the bottom traction legs having opposite ends connected to two adjacent bottom extension legs, and the inclination direction of the bottom traction legs being opposite to the inclination direction of the bottom extension legs.

9. The press pump of claim 8, wherein the helical direction of the top extension leg is opposite to the helical direction of the bottom extension leg.

10. The push pump of claim 8, wherein the valve body includes a valve plate and a valve leg, the valve plate being surrounded by the bottom ring, and the opposite ends of the valve leg extending to the bottom ring and the valve plate, respectively.

11. A bottle of emulsion characterized in that include: Bottle body; and The press pump according to any one of claims 1 to 9, wherein the press pump is mounted on the bottle body.

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