Bottom-dispensing cream bottle

Abstract

The utility model discloses a kind of bottom liquid's paste bottles, it includes bottle, extrusion plate, drive unit and flow guide pipe, the bottle has bottle cavity and the bottom liquid outlet being communicated in the bottle cavity, the extrusion plate is with the mode of the circumferential wall of the extrusion plate and the inner wall of the bottle body is adhered to be downwardly movably installed in the bottle cavity of the bottle body, the drive unit is installed in the top of the bottle, for driving the extrusion plate downwardly moves in the bottle cavity of the bottle, one end of the flow guide pipe is installed in the bottom of the bottle with the mode that the lumen of the flow guide pipe and the bottom liquid outlet of the bottle are communicated.

Description

Technical Field

[0001] This utility model relates to ointment bottles, and more particularly to an ointment bottle with bottom-dispensing liquid. Background Technology

[0002] In Chinese utility model patent CN214421017U, a toothpaste bottle is disclosed, comprising a bottle body, a cap, and a pneumatic slider. One end of the bottle body has an opening, the cap is fastened to the opening, and the pneumatic slider is slidably installed inside the bottle body. The outer edge of the pneumatic slider abuts against the inner wall of the bottle body and can slide along the length of the bottle body. An air inlet is located at the end of the bottle body away from the opening, and a discharge pipe is connected to the side wall of the bottle body near the cap. The discharge pipe has an outlet at its outward end. The toothpaste bottle, through the cooperation of the bottle body and the pneumatic slider, forms a piston structure. When an external air pump blows air into the bottle body through the air inlet, the pneumatic slider can slide along the axis of the bottle body, causing the toothpaste inside to be squeezed out. The drawback of the existing technology is that the toothpaste bottle requires an external air pump to blow air into the bottle body through the air inlet; there is no dedicated air pump, which makes the operation of the existing toothpaste bottle too complicated, especially unsuitable for children. Utility Model Content

[0003] One objective of this invention is to provide a bottom-dispensing ointment bottle, wherein the inflation component of the driving unit of the ointment bottle is airtightly installed on the top cover. The user can inflate the air cavity formed between the top cover, the bottle body, and the extrusion piston through the inflation component, so that the air in the air cavity drives the extrusion piston to move downward in the bottle cavity of the bottle body, thereby squeezing out the ointment contained in the bottle cavity of the bottle body. In this way, the ointment bottle can be used conveniently.

[0004] One objective of this invention is to provide a bottom-dispensing ointment bottle, wherein the pump body of the drive unit is installed in the mounting groove of the top cover. This not only helps to ensure that the inflation component is airtightly installed on the top cover, but also helps to reduce the overall height of the ointment bottle, thereby miniaturizing the ointment bottle.

[0005] One object of this invention is to provide a bottom-discharge paste bottle, wherein the paste contained in the paste bottle is extruded by the squeeze piston through the bottom outlet, and therefore the paste bottle of this invention is particularly suitable for viscous pastes.

[0006] According to one aspect of the present invention, the present invention provides a bottom-dispensing ointment bottle, comprising: The bottle body has a bottle cavity and a bottom outlet communicating with the bottle cavity; A compression piston is movably mounted downward in the bottle cavity of the bottle body in such a way that its peripheral wall is fitted against the inner wall of the bottle body; A flow guide tube, one end of which is connected to the bottom of the bottle body via a connection between the lumen of the flow guide tube and the bottom outlet of the bottle body; and A drive unit includes a top cover and an inflation assembly. The top cover is mounted on the top of the bottle body. The ointment bottle forms an air chamber between the bottle body, the squeeze piston, and the top cover. The top cover has a top cover hole communicating with the air chamber. The inflation assembly is airtightly mounted on the top cover and is configured to inflate the air chamber so that the air injected into the air chamber drives the squeeze piston to move downward within the bottle body's cavity.

[0007] According to one embodiment of the present invention, the inflation assembly includes a pump housing, an air control valve, a pump cover, an operating rod, and an elastic element. The pump housing has a pump chamber and an air outlet communicating with the pump chamber. The air control valve is installed at the bottom of the pump housing for opening and closing the air outlet of the pump housing. The pump cover has a pump cover hole and is installed at the top of the pump housing. The pump cover hole communicates with the pump chamber of the pump housing. The operating rod includes a piston portion and a rod body extending upward from the piston portion. The piston portion is movably installed in the pump chamber of the pump housing. The rod body extends to the outside through the pump cover hole of the pump cover. The opposite ends of the elastic element abut against the pump housing and the piston portion, respectively. The pump housing is airtightly installed on the top cover. When the piston portion moves downward to open the air outlet of the pump housing, the pump chamber of the pump housing communicates with the air chamber through the air outlet.

[0008] According to one embodiment of the present invention, the pump housing has a bottom mounting post for defining the air outlet, the air control valve is mounted on the bottom mounting post, wherein the bottom mounting post of the pump housing extends into the top cover hole of the top cover.

[0009] According to one embodiment of the present invention, the air control valve includes a first valve plate, a first mounting ring surrounding the first valve plate, and a first connecting arm connecting the first valve plate and the first mounting ring. The first mounting ring is fixedly mounted to the bottom mounting post of the pump housing. The first connecting arm is used to suspend the first valve plate at the bottom of the bottom mounting post. In its natural state, the first mounting ring and the first connecting arm keep the first valve plate in a position that closes the air outlet of the pump housing. When the air pressure in the pump chamber of the pump housing is greater than the air pressure in the air chamber, allowing the first valve plate to open the air outlet of the pump housing, the first connecting arm is pulled and deformed by the downward-moving first valve plate, so that the first connecting arm has a tendency to pull the first valve plate upward and reset.

[0010] According to one embodiment of the present invention, the top cover has a mounting groove that extends from the top surface of the top cover to the bottom surface, and the top cover hole extends from the bottom of the mounting groove to the bottom surface of the top cover. The bottom of the pump housing is airtightly mounted in the mounting groove of the top cover.

[0011] According to one embodiment of the present invention, the extrusion piston has a clearance groove with its opening facing the top cover, wherein the position of the clearance groove of the extrusion piston and the position of the air control valve correspond in the height direction, so that the extrusion piston avoids the air control valve.

[0012] According to one embodiment of the present invention, the ointment bottle includes a cap unit, the cap unit includes a cap body and a liquid outlet tube disposed on the cap body, the cap body has a perforation, the cap body is fitted onto the top cover such that a part of the top cover extends into the perforation, the inner end of the liquid outlet tube is installed at one end of the guide tube, and the lumen of the liquid outlet tube and the lumen of the guide tube are connected.

[0013] According to one embodiment of the present invention, the ointment bottle includes an outer shell that covers the bottle body and the guide tube, and the top of the outer shell is mounted on the bottom of the cap body.

[0014] According to one embodiment of the present invention, the driving unit includes a pressing cap, the pressing cap including a cap body, a driving rod and a guide ring, the driving rod and the guide ring extending downward from the cap body respectively, and the guide ring surrounding the driving rod, the bottom of the driving rod being mounted on the top of the rod body, the bottom of the guide ring extending into the through hole of the cap body, and the outer wall of the guide ring fitting against the inner wall of the cap body for defining the through hole.

[0015] According to one embodiment of the present invention, the top cover has a guide groove communicating with the through hole of the cover body. The driving unit includes a pressing cap, the pressing cap including a cap body, a driving rod, and a guide ring. The driving rod and the guide ring extend downward from the cap body, and the guide ring surrounds the driving rod. The bottom of the driving rod is mounted on the top of the rod body. The bottom of the guide ring extends into the guide groove of the top cover through the through hole of the cover body, and the outer wall of the guide ring fits against the inner wall of the top cover that defines the guide groove.

[0016] According to one embodiment of the present invention, the ointment bottle includes a deformable protective cover, the top of the cap body abuts against the middle of the protective cover, and the edge of the protective cover fits against the outer surface of the cap body.

[0017] According to one embodiment of the present invention, the protective cover and the cap body are bonded together.

[0018] According to one embodiment of the present invention, the protective cover is integrally integrated into the cap body.

[0019] According to one embodiment of the present invention, the ointment bottle includes a ring cap, the ring cap is installed on the cap body, and the edge of the protective cover is clamped between the cap body and the ring cap so that the edge of the protective cover fits against the outer surface of the cap body.

[0020] According to one embodiment of the present invention, the ring cover has a liquid outlet channel, the end face of the outer end of the liquid outlet pipe is attached to the inner wall of the ring cover, and the lumen of the liquid outlet pipe is connected to the liquid outlet channel of the ring cover.

[0021] According to one embodiment of the present invention, the ointment bottle includes a dispensing nozzle, one end of which extends into the lumen of the dispensing tube, and the other end extends into the dispensing channel of the ring cap.

[0022] According to one embodiment of the present invention, the outer end of the liquid outlet tube has a receiving groove, the inner diameter of the receiving groove is larger than the inner diameter of the lumen of the liquid outlet tube, and the paste bottle includes a preservation valve, which is installed in the receiving groove of the liquid outlet tube for opening and closing the lumen of the liquid outlet tube.

[0023] According to one embodiment of the present invention, the outer end of the dispensing tube has a receiving groove, the inner diameter of which is larger than the inner diameter of the lumen of the dispensing tube. The paste bottle includes a preservation valve, which includes a second valve plate, a second mounting ring surrounding the second valve plate, and a second connecting arm connecting the second valve plate and the second mounting ring. The mounting ring is fixedly mounted to the receiving groove of the dispensing tube. The second connecting arm is used to suspend the second valve plate at the opening of the lumen of the dispensing tube. In its natural state, the second mounting ring and the second connecting arm keep the second valve plate in a position that closes the lumen of the dispensing tube. When the hydraulic pressure in the lumen of the dispensing tube is greater than the external air pressure, allowing the second valve plate to open the lumen of the dispensing tube, the second connecting arm is deformed by the outwardly moving second valve plate, giving the second connecting arm a tendency to pull back the second valve plate and reset it inward. The outer wall of one end of the dispensing nozzle is attached to the inner wall of the second mounting ring of the preservation valve.

[0024] According to one embodiment of the present invention, the top cover has a support arm that rests against the rim of the bottle body. Attached Figure Description

[0025] Figure 1 This is a perspective view of a bottom-dispensing ointment bottle according to a preferred embodiment of the present invention.

[0026] Figure 2 This is a perspective view of the ointment bottle according to the above-described preferred embodiment of the present invention.

[0027] Figure 3 This is an exploded view of the ointment bottle according to the above-described preferred embodiment of the present invention.

[0028] Figure 4 This is an exploded view of the ointment bottle according to the above-described preferred embodiment of the present invention.

[0029] Figure 5 This is a three-dimensional cross-sectional view of the ointment bottle according to the above-described preferred embodiment of the present invention.

[0030] Figure 6 yes Figure 5 A magnified view of one of the locations.

[0031] Figure 7 yes Figure 5 A magnified view of another location.

[0032] Figure 8 This is a cross-sectional view of the ointment bottle according to the above-described preferred embodiment of the present invention from a plan view perspective.

[0033] Figure 9 This is a cross-sectional schematic diagram of one of the usage stages of the ointment bottle according to the above-described preferred embodiment of the present invention.

[0034] Figure 10 This is a cross-sectional schematic diagram of the second stage of use of the ointment bottle according to the above-described preferred embodiment of the present invention.

[0035] Figure 11 This is a cross-sectional schematic diagram of the third stage of use of the ointment bottle according to the above-described preferred embodiment of the present invention.

[0036] Figure 12 This is a cross-sectional schematic diagram of the fourth stage of use of the ointment bottle according to the above-described preferred embodiment of the present invention. Detailed Implementation

[0037] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application 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 is capable of 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.

[0038] 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 the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0039] Refer to the accompanying drawings of the specification of this utility model. Figures 1 to 12A preferred embodiment of the present invention, a bottom-dispensing ointment bottle, will be disclosed and described in the following description, wherein the ointment bottle includes a bottle body 10, a squeeze piston 20, a guide tube 30, and a drive unit 40.

[0040] Specifically, the bottle body 10 has a cavity 11 and a bottom outlet 12 communicating with the cavity 11, and toothpaste or other paste 1000 is contained in the cavity 11 of the bottle body 10. The squeeze piston 20 is installed in the cavity 11 of the bottle body 10, the peripheral wall of the squeeze piston 20 is in contact with the inner wall of the bottle body 10, and the squeeze piston 20 is capable of moving downward within the cavity 11 of the bottle body 10 to squeeze the paste 1000 contained in the cavity 11 of the bottle body 10 out of the bottom outlet 12 of the bottle body 10. One end of the guide tube 30 is installed at the bottom of the bottle body 10. The cavity of the guide tube 30 is connected to the bottom liquid outlet 12 of the bottle body 10. In this way, the paste 1000 squeezed out through the bottom liquid outlet 12 of the bottle body 10 can enter the guide tube 30 and be guided by the guide tube 30. The drive unit 40 includes a top cover 41 and an inflation assembly 42. The top cover 41 is installed on the top of the bottle body 10. The ointment bottle forms an air chamber 50 between the bottle body 10, the squeeze piston 20, and the top cover 41. The top cover 41 has a top cover hole 411, which communicates with the air chamber 50. The inflation assembly 42 is airtightly installed on the top cover 41. The inflation assembly 42 is configured to inflate the air chamber 50, so that the air inflated into the air chamber 50 drives the squeeze piston 20 to move downward in the bottle cavity 11 of the bottle body 10, thereby squeezing out the ointment 1000 contained in the bottle cavity 11 of the bottle body 10 through the bottom outlet 12. The squeezed-out ointment 1000 enters the guide tube 30 and is guided by the guide tube 30.

[0041] Unlike existing technologies, in the attached Figures 1 to 12 In the ointment bottle of this utility model shown, the inflation component 42 is airtightly installed on the top cover 41. The user can directly inflate the air cavity 50 formed between the top cover 41, the bottle body 10 and the extrusion piston 20 through the inflation component 42. The air in the air cavity 50 drives the extrusion piston 20 to move downward in the bottle cavity 11 of the bottle body 10, thereby squeezing out the ointment 1000 contained in the bottle cavity 11 of the bottle body 10. In this way, the ointment bottle can be used conveniently.

[0042] In the appendix Figures 1 to 12In this specific example of the ointment bottle of the present invention, the squeeze piston 20 includes a main body portion 21, an upper flange portion 22, and a lower flange portion 23. The outer diameter of the main body portion 21 is slightly smaller than the inner diameter of the bottle cavity 11 of the bottle body 10. The upper flange portion 22 extends obliquely upward and outward from the periphery of the main body portion 21, and the lower flange portion 23 extends obliquely downward and outward from the periphery of the main body portion 21. After the squeeze piston 20 is installed in the bottle cavity 11 of the bottle body 10, the inner wall of the bottle body 10 slightly squeezes the upper flange portion 22 and the lower flange portion 23, so that the peripheral wall of the squeeze piston 20 fits against the inner wall of the bottle body 10. This not only avoids the leakage problem caused by gaps between the peripheral wall of the squeeze piston 20 and the inner wall of the bottle body 10, but also allows the squeeze piston 20 to move smoothly downward within the bottle cavity 11 of the bottle body 10.

[0043] Preferably, the main body portion 21, the upper flange portion 22, and the lower flange portion 23 of the extrusion piston 20 are integrally formed from plastic material using an injection molding process. Therefore, after the extrusion piston 20 is installed in the bottle cavity 11 of the bottle body 10, the inner wall of the bottle body 10 can slightly squeeze the upper flange portion 22 and the lower flange portion 22, so that the peripheral wall of the extrusion piston 20 fits against the inner wall of the bottle body 10, while ensuring that the extrusion piston 20 can be driven to move downward within the bottle cavity 11 of the bottle body 10.

[0044] Reference Appendix Figures 3 to 5 , Figure 8 The bottom of the bottle body 10 has a bottle body insertion post 13, and the bottom liquid outlet 12 of the bottle body 10 passes through the bottle body insertion post 13. The bottle body insertion post 13 of the bottle body 10 is inserted into one end of the guide tube 30, and this end of the guide tube 30 is installed at the bottom of the bottle body 10, so that the lumen of the guide tube 30 is connected to the bottom liquid outlet 12 of the bottle body 10.

[0045] Continue to refer to the appendix Figures 3 to 6 The peripheral wall of the top cover 41 and the inner wall of the bottle body 10 are interlocked to reliably install the top cover 41 on the top of the bottle body 10. Preferably, the top cover 41 has a support arm 412, which rests against the rim of the bottle body 10. When the top cover 41 is subjected to downward pressure, the rim of the bottle body 10 supports the support arm 412 of the top cover 41 upward, preventing the top cover 41 from undergoing a downward displacement equivalent to that of the bottle body 10.

[0046] Continue to refer to the appendix Figures 3 to 5 , Figure 7The inflation assembly 42 includes a pump housing 421, an air control valve 422, a pump cover 423, an operating lever 424, and an elastic element 425. The pump housing 421 has a pump chamber 4211 and an air outlet 4212 communicating with the pump chamber 4211. The pump housing 421 is airtightly mounted on the top cover 41. The air control valve 422 is mounted on the bottom of the pump housing 421 for opening and closing the air outlet 4212 of the pump housing 421. The pump cover 423 has a pump cover hole 4231 and is mounted on the pump housing. At the top of 421, the pump cover hole 4231 of the pump cover 423 communicates with the pump chamber 4211 of the pump housing 421. The operating rod 424 includes a piston portion 4241 and a rod body 4242 extending upward from the piston portion 4241. The piston portion 4241 is movably mounted on the pump chamber 4211 of the pump housing 421. The rod body 4242 extends to the outside through the pump cover hole 4231 of the pump cover 423. The opposite ends of the elastic element 425 abut against the pump housing 421 and the piston portion 4241, respectively.

[0047] When the user presses down the operating lever 424, the piston 4241 moves downward within the pump chamber 4211 of the pump housing 421, compressing the air within the pump chamber 4211. The air pressure within the pump chamber 4211 is greater than the air pressure within the air chamber 50, allowing the air control valve 422 to open the air outlet 4212 of the pump housing 421. The air outlet 4212 is connected to the air chamber 50, allowing air from the pump chamber 4211 to enter the air chamber 50. At this time, the air pressure within the air chamber 50 is greater than the pressure within the bottle cavity 11 of the bottle body 10, so that the air entering the air chamber 50 drives the compression piston 20 to move downward within the bottle cavity 11 of the bottle body 10. Simultaneously, the elastic element 425 is compressed and deformed, accumulating elastic potential energy. When the user releases the pressure of the operating lever 424, the elastic element 425 pushes the piston 4241 upward during the process of returning to its initial state. After the piston 4241 moves upward to its initial position, external air enters the pump chamber 4211 of the pump housing 421, restoring the air pressure in the pump chamber 4211 and the air pressure in the air chamber 50 to balance. The air control valve 422 then closes the air outlet 4212 of the pump housing 421. By repeating the above actions, the squeezing piston 20 will move a large distance within the bottle cavity 11 of the bottle body 10, thereby squeezing the ointment 1000 contained in the bottle cavity 11 of the bottle body 10 through the bottom liquid outlet 12 of the bottle body 10 into the guide tube 30.

[0048] In the appendix Figures 1 to 12In this specific example of the ointment bottle of the present invention shown, the pump chamber 4211 of the pump housing 421 is two-sectioned, having a bottom chamber 42111 and a top chamber 42112. The inner diameter of the bottom chamber 42111 is smaller than the inner diameter of the top chamber 42112. The outer diameter of the piston portion 4241 of the operating lever 424 is slightly larger than the inner diameter of the bottom chamber 42111 and smaller than the inner diameter of the top chamber 42112. In the initial position, the elastic element 425 causes the piston portion 4241 to be located in the top chamber of the pump housing 421. Body 42112, at this time the bottom cavity 42111 is connected to the external environment through the gap between the top cavity 42112, the rod body 4242 and the pump cover 423, so as to allow external air to enter the bottom cavity 42111 through the gap between the rod body 4242 and the pump cover 423 and the top cavity 42112. After the piston part 4241 moves downward to the bottom cavity 42111, the peripheral wall of the piston part 4241 and the inner wall of the pump housing 421 are tightly fitted, so that the air entering the bottom cavity 42111 can be compressed to increase the air pressure.

[0049] Preferably, refer to the appendix Figure 5 and Figure 6 The top cover 41 has a mounting groove 413 extending from the top surface 414 of the top cover 41 to the bottom surface 415 of the top cover. The top cover hole 411 extends from the bottom of the mounting groove 413 to the bottom surface 415 of the top cover 41. The bottom of the pump housing 421 is airtightly installed in the mounting groove 413 of the top cover 41. In this way, it is not only beneficial to ensure that the inflation component 42 is airtightly installed in the top cover 41, but also beneficial to reduce the overall height of the ointment bottle, thus making the ointment bottle smaller.

[0050] Preferably, the inner wall of the top cover 41 and the peripheral wall of the pump housing 421 are interlocked to reliably install the pump housing 421 into the mounting groove 413 of the top cover 41.

[0051] Further, see attached document. Figure 3 , Figure 4 and Figure 7 The bottom of the pump housing 421 has a bottom mounting post 4213, which is used to define the air outlet 4212. The air control valve 422 is mounted on the bottom mounting post 4213 to install the air control valve 422 on the bottom of the pump housing 421.

[0052] Specifically, the air control valve 422 includes a first valve plate 4221, a first mounting ring 4222, and at least one first connecting arm 4223. The first mounting ring 4222 surrounds the first valve plate 4221, and the opposite ends of the first connecting arm 4223 are respectively connected to the first valve plate 4221 and the first mounting ring 4222. (See attached...) Figures 1 to 12 In this specific example of the ointment bottle of the present invention, the number of first connecting arms 4223 is three. These three first connecting arms 4223 extend curvedly between the first mounting ring 4222 and the first valve plate 4221. The curved extension of the first connecting arms 4223 facilitates an increase in the downward travel of the first valve plate 4221. However, as a feasible embodiment of the ointment bottle of the present invention, the first connecting arms 4223 may not be curved, allowing the first valve plate 4221 to stretch the first connecting arms 4223 as the first valve plate 4221 moves downward.

[0053] The first mounting ring 4222 of the air control valve 422 is fixedly mounted to the bottom mounting post 4213 of the pump housing 421. The first connecting arm 4223 is used to suspend the first valve plate 4221 at the bottom of the bottom mounting post 4213. In the natural state, the first mounting ring 4222 and the first connecting arm 4223 cooperate with each other to keep the first valve plate 4221 in the position of closing the air outlet 4212 of the pump housing 421. When the inflation assembly 42 is used to inflate the air chamber 50, when the air pressure in the pump chamber 4211 of the pump housing 421 is greater than the air pressure in the air chamber 50, allowing the first valve plate 4221 to open the air outlet 4212 of the pump housing 421, the first connecting arm 4223 is pulled and deformed by the downward-moving first valve plate 4221, so that the first connecting arm 4223 has a tendency to pull the first valve plate 4221 upward to reset. When the air pressure in the pump chamber 4211 of the pump housing 421 and the air pressure in the air chamber 50 are restored to equilibrium, the first connecting arm 4223 pulls the first valve plate 4221 upward to reset during the process of restoring the initial state, so as to close the air outlet 4212 of the pump housing 421.

[0054] Preferably, the inner wall of the first mounting ring 4222 of the air control valve 422 and the peripheral wall of the bottom mounting post 4213 of the pump housing 421 are engaged with each other to reliably install the air control valve 422 on the bottom of the pump housing 421.

[0055] In the ointment bottle of this utility model, refer to the attached document. Figure 5 , Figure 7 and Figure 8The bottom mounting post 4213 of the pump housing 421 extends into the top cover hole 411 of the top cover 41, so that the first assembly ring 4222 of the air control valve 422 can be clamped between the bottom mounting post 4213 of the pump housing 421 and the top cover 41, so as to ensure that the air control valve 422 is reliably installed at the bottom of the pump housing 421.

[0056] Preferably, refer to the appendix Figure 5 , Figure 7 and Figure 8 The compression piston 20 has a relief groove 24, the opening of the relief groove 24 faces the top cover 41, and the position of the relief groove 24 of the compression piston 20 corresponds to the position of the air control valve 422 in the height direction, so that the compression piston 20 avoids the air control valve 422.

[0057] Continue to refer to the appendix Figures 1 to 5 , Figure 8 The ointment bottle includes a cap unit 60, which includes a cap body 61 and a dispensing tube 62. The dispensing tube 62 is disposed on the cap body 61. For example, the cap body 61 and the dispensing tube 62 can be integrally molded from plastic material using an injection molding process, so that the dispensing tube 62 is disposed on the cap body 61. The cap body 61 has a through hole 611, and the cap body 61 is fitted onto the top cover 41. A portion of the top cover 41 extends into the through hole 611 of the cap body 61. The inner end of the dispensing tube 62 is installed at one end of the guide tube 30, and the lumen of the dispensing tube 62 is connected to the lumen of the guide tube 30. In this way, the ointment 1000 entering the guide tube 30 can further enter the dispensing tube 62. It is understandable that, since the liquid outlet tube 62 is located on the cap body 61, and the cap body 61 is fitted onto the top cap 41, the liquid outlet tube 62 is located at a higher position on the ointment bottle, which makes it convenient for the user to obtain the ointment 1000.

[0058] Preferably, the inner wall of the cover body 61 and the peripheral wall of the top cover 41 are interlocked to reliably fit the cover body 61 onto the top cover 41.

[0059] Preferably, the inner end of the liquid outlet tube 62 of the bottle cap unit 60 has a tube insert post 621, and the tube insert post 621 of the liquid outlet tube 62 is inserted into one end of the guide tube 30 so that the inner end of the liquid outlet tube 62 is installed at one end of the guide tube 30, and the lumen of the liquid outlet tube 62 and the lumen of the guide tube 30 are connected.

[0060] Continue to refer to the appendix Figures 1 to 5 , Figure 8The ointment bottle further includes a shell 70, which covers the bottle body 10 and the flow guide tube 30, making the bottle body 10 and the flow guide tube 30 visually invisible. The top of the shell 70 is installed at the bottom of the cap body 61.

[0061] Preferably, the peripheral wall of the outer shell 70 and the inner wall of the cover body 61 are interlocked to reliably mount the top of the outer shell 70 onto the cover body 61.

[0062] Continue to refer to the appendix Figures 1 to 5 , Figure 8 The top cover 41 has a guide groove 416, which communicates with the through hole 611 of the cover body 61. The drive unit 40 includes a pressing cap 43, which includes a cap body 431, a drive rod 432, and a guide ring 433. The drive rod 432 and the guide ring 433 extend downward from the cap body 431, and the guide ring 433 surrounds the drive rod 432. The bottom of the drive rod 432 is mounted on the top of the rod body 4242. The bottom of the guide ring 433 extends into the guide groove 416 of the top cover 41 through the through hole 611 of the cover body 61, and the outer wall of the guide ring 433 fits against the inner wall of the top cover 41 that defines the guide groove 416. In this way, the guide ring 433 and the top cover 41 cooperate with each other to avoid the problem of the pressing cap 43 tilting when moving downward.

[0063] Optionally, in other specific examples of the ointment bottle of this utility model, the top cap 41 may not have the guide groove 416. The bottom of the guide ring 433 extends into the through hole 611 of the cap body 61, and the outer wall of the guide ring 433 fits against the inner wall of the cap body 61 that defines the through hole 611. In this way, the guide ring 433 and the cap body 61 cooperate with each other to avoid the problem of the pressing cap 43 tilting when it moves downward.

[0064] Continue to refer to the appendix Figures 1 to 5 , Figure 8 The ointment bottle further includes a deformable protective cover 80. The cap 431 of the pressing cap 43 abuts against the center of the protective cover 80, and the edge of the protective cover 80 fits against the outer surface of the cap body 61. The protective cover 80 can prevent the cap 431 and the cap body 61 from pinching the user, especially preventing the cap 431 and the cap body 61 from pinching the fingers of infants and young children, so as to ensure the safety of using the ointment bottle. The protective cover 80 may be made of, but is not limited to, silicone.

[0065] In the appendix Figures 1 to 12In this specific example of the ointment bottle of the present invention, the protective cover 80 is integrally formed with the cap 431, so that the protective cover 80 and the cap 431 are combined into a single unit. This ensures that the deformation process of the protective cover 80 and the displacement process of the cap 431 are consistent, thereby improving the pressing feel of the ointment bottle. Optionally, in other specific examples of the ointment bottle of the present invention, the middle part of the protective cover 80 and the cap 431 can be glued together, so that the protective cover 80 and the cap 431 are combined into a single unit.

[0066] Continue to refer to the appendix Figures 1 to 5 , Figure 8 The ointment bottle further includes a ring cap 90, which is installed on the cap body 61. The edge of the protective cover 80 is clamped between the cap body 61 and the ring cap 90 so that the edge of the protective cover 80 fits against the outer surface of the cap body 61. When the protective cover 80 is pressed and deformed, the ring cap 90 is used to prevent the edge of the protective cover 80 from separating from the outer surface of the cap body 61, thereby ensuring that the protective cover 80 provides protection.

[0067] It is worth mentioning that the specific manner in which the ring cap 90 is installed on the cap body 61 is not limited in the ointment bottle of this utility model. For example, in the appendix Figures 1 to 12 In this specific example of the ointment bottle of the present invention, the ring cap 90 is reliably mounted on the cap body 61 based on the frictional force between the inner wall of the ring cap 90 and the outer wall of the cap body 61. Preferably, the ring cap 90 has a liquid outlet channel 91, the end face of the outer end of the liquid outlet tube 62 is in contact with the inner wall of the ring cap 90, and the lumen of the liquid outlet tube 62 is in communication with the liquid outlet channel 91 of the ring cap 90.

[0068] Continue to refer to the appendix Figures 1 to 5 , Figure 8 The ointment bottle includes a dispensing nozzle 100. One end of the dispensing nozzle 100 extends into the cavity of the dispensing pipe 62, and the other end extends into the dispensing channel 91 of the ring cap 90. The ointment 1000 discharged from the dispensing pipe 62 can be discharged to the outside of the ointment bottle through the dispensing nozzle 100.

[0069] Preferably, refer to the appendix Figures 3 to 6The outer end of the liquid outlet pipe 62 has a receiving groove 622, the inner diameter of which is larger than the inner diameter of the lumen of the liquid outlet pipe 62. The paste bottle includes a preservation valve 110, which is installed in the receiving groove 622 of the liquid outlet pipe 62 for opening and closing the lumen of the liquid outlet pipe 62. When the preservation valve 110 opens the lumen of the liquid outlet pipe 62, the paste 1000 is allowed to be discharged to the outside of the paste bottle. When the preservation valve 110 closes the lumen of the liquid outlet pipe 62, external air is prevented from entering the lumen of the liquid outlet pipe 62, thereby achieving preservation of the paste 1000 stored in the liquid outlet pipe 62.

[0070] Specifically, the preservation valve 110 includes a second valve plate 1101, a second mounting ring 1102, and at least one second connecting arm 1103. The second mounting ring 1102 surrounds the second valve plate 1101. The opposite ends of the second connecting arm 1103 are respectively connected to the second valve plate 1101 and the second mounting ring 1102. The second mounting ring 1102 is fixedly mounted to the receiving groove 622 of the liquid outlet pipe 62. The second connecting arm 1103 is used to suspend the second valve plate 1101 at the opening of the cavity of the liquid outlet pipe 62. In its natural state, the second mounting ring 1102 and the second connecting arm 1103 are... The connecting arm 1103 holds the second valve plate 1101 in the position of closing the cavity of the outlet pipe 62. When the hydraulic pressure inside the cavity of the outlet pipe 62 is greater than the external air pressure, allowing the second valve plate 1101 to open the cavity of the outlet pipe 62, the second connecting arm 1103 is deformed by the outwardly moving second valve plate 1101, giving the second connecting arm 1103 a tendency to pull the second valve plate 1101 back inward to reset. When the hydraulic pressure inside the outlet pipe 62 and the external air pressure are balanced, the second connecting arm 1103 pulls back the second valve plate 1101 during the process of returning to its initial state, thereby closing the cavity of the outlet pipe 62. (See attached...) Figures 1 to 12 In this specific example of the ointment bottle of the present invention, the number of second connecting arms 1103 is three. These three second connecting arms 1103 extend curvedly between the second mounting ring 1102 and the second valve plate 1101. The curved extension of the second connecting arms 1103 facilitates an increase in the outward travel of the second valve plate 1101. However, as a feasible embodiment of the ointment bottle of the present invention, the second connecting arms 1103 may not be curved, allowing the second valve plate 1101 to stretch the second connecting arms 1103 when the second valve plate 1101 moves outward.

[0071] Preferably, the peripheral wall of the second mounting ring 1102 of the preservation valve 110 and the inner wall of the liquid outlet pipe 62 interlock to reliably install the preservation valve 110 into the receiving groove 622 of the liquid outlet pipe 62. Preferably, the outer wall of one end of the liquid outlet nozzle 100 is attached to the inner wall of the second mounting ring 1102 of the preservation valve 110, so that the preservation valve 110 is reliably installed into the receiving groove 622 of the liquid outlet pipe 62. More preferably, the peripheral wall of the liquid outlet nozzle 100 and the inner wall of the second mounting ring 1102 interlock to reliably install the preservation valve 110 into the receiving groove 622 of the liquid outlet pipe 62.

[0072] Further, see attached document. Figures 2 to 5 The bottle body 10 has a filling port 14 at its bottom, which communicates with the bottle cavity 11. The outer casing 70 has a filling channel 71, the position of which corresponds to the position of the filling port 14. The ointment 1000 is allowed to be poured into the bottle cavity 11 through the filling channel 71 of the outer casing 70 and the filling port 14 of the bottle body 10. The ointment bottle includes a stopper 120, which is inserted into the filling channel 71 of the outer casing 70 and the filling port 14 of the bottle body 10 to prevent leakage of the ointment 1000 poured into the bottle cavity 11 of the bottle body 10. (See attached diagram.) Figures 9 to 12When the user presses the protective cover 80, the pressing cap 43 is forced downward, driving the operating lever 424 downward. The piston 4241 moves downward within the pump chamber 4211 of the pump housing 421, compressing the air within the pump chamber 4211. The air pressure within the pump chamber 4211 is greater than the air pressure within the air chamber 50, allowing the air control valve 422 to open the air outlet 4212 of the pump housing 421. The air outlet 4212 is connected to the air chamber 50, allowing air from the pump chamber 4211 to enter the air chamber 50. At this time, the air pressure within the air chamber 50 is greater than that of the bottle. The pressure inside the cavity 11 of the bottle body 10 is such that the air entering the air chamber 50 drives the squeezing piston 20 to move downward within the cavity 11 of the bottle body 10, squeezing the paste 1000 contained in the cavity 11 of the bottle body 10 through the bottom outlet 12 of the bottle body 10 into the guide tube 30 and the outlet tube 62. The hydraulic pressure in the outlet tube 62 increases to be greater than the external air pressure, and the preservation valve 110 opens the cavity of the outlet tube 62 to allow the paste 1000 to be discharged through the outlet nozzle 100. At the same time, the elastic element 425 is compressed and deformed to accumulate elastic potential energy. When the user releases the pressure on the protective cover 80, the elastic element 425 pushes the piston 4241 upward during the process of returning to the initial state. After the piston 4241 moves upward to the initial position, external air enters the pump chamber 4211 of the pump housing 421, so that the air pressure in the pump chamber 4211 and the air pressure in the air chamber 50 are restored to balance. The air control valve 422 closes the air outlet 4212 of the pump housing 421, and the hydraulic pressure in the liquid outlet pipe 62 and the external air pressure are restored to balance, so that the freshness preservation valve 110 can close the lumen of the liquid outlet pipe 62.

[0073] 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 paste bottle with bottom-dispensing liquid, characterized in that, include: The bottle body has a bottle cavity and a bottom outlet communicating with the bottle cavity; A compression piston is movably mounted downward in the bottle cavity of the bottle body in such a way that its peripheral wall is fitted against the inner wall of the bottle body; A flow guide tube, one end of which is connected to the bottom of the bottle body in such a way that the lumen of the flow guide tube is connected to the bottom outlet of the bottle body; as well as A drive unit includes a top cover and an inflation assembly. The top cover is mounted on the top of the bottle body. The ointment bottle forms an air chamber between the bottle body, the squeeze piston, and the top cover. The top cover has a top cover hole communicating with the air chamber. The inflation assembly is airtightly mounted on the top cover and is configured to inflate the air chamber so that the air injected into the air chamber drives the squeeze piston to move downward within the bottle body's cavity.

2. The ointment bottle according to claim 1, wherein the inflation assembly comprises a pump housing, an air control valve, a pump cover, an operating rod, and an elastic element, the pump housing having a pump chamber and an air outlet communicating with the pump chamber, the air control valve being installed at the bottom of the pump housing for opening and closing the air outlet of the pump housing, the pump cover having a pump cover hole, the pump cover being installed at the top of the pump housing, the pump cover hole communicating with the pump chamber of the pump housing, the operating rod comprising a piston portion and a rod body extending upward from the piston portion, the piston portion being movably mounted vertically in the pump chamber of the pump housing, the rod body extending to the outside through the pump cover hole of the pump cover, the opposite ends of the elastic element abutting against the pump housing and the piston portion respectively, wherein the pump housing is airtightly mounted on the top cover, and when the piston portion moves downward to cause the air control valve to open the air outlet of the pump housing, the pump chamber of the pump housing communicating with the air chamber through the air outlet.

3. The ointment bottle according to claim 2, wherein the pump housing has a bottom mounting post for defining the vent hole, the gas control valve is mounted on the bottom mounting post, wherein the bottom mounting post of the pump housing extends into the top cover hole of the top cover.

4. The ointment bottle according to claim 3, wherein the gas control valve includes a first valve plate, a first mounting ring surrounding the first valve plate, and a first connecting arm connecting the first valve plate and the first mounting ring, the first mounting ring being fixedly mounted to the bottom mounting post of the pump housing, the first connecting arm being used to suspend the first valve plate at the bottom of the bottom mounting post, in a natural state, the first mounting ring and the first connecting arm keep the first valve plate in a position that closes the air outlet of the pump housing, when the air pressure in the pump chamber of the pump housing is greater than the air pressure in the air chamber, allowing the first valve plate to open the air outlet of the pump housing, the first connecting arm is deformed by the downwardly moving first valve plate, so that the first connecting arm has a tendency to pull the first valve plate upward to reset.

5. The ointment bottle according to claim 2, wherein the top cover has a mounting groove extending from the top surface of the top cover to the bottom surface, the top cover hole extending from the bottom of the mounting groove to the bottom surface of the top cover, and the bottom of the pump housing is airtightly mounted to the mounting groove of the top cover.

6. The ointment bottle according to claim 3, wherein the squeeze piston has a relief groove with its opening facing the top cover, wherein the position of the relief groove of the squeeze piston and the position of the gas control valve correspond in the height direction, so that the squeeze piston avoids the gas control valve.

7. The ointment bottle according to any one of claims 2 to 6, wherein the ointment bottle includes a cap unit, the cap unit including a cap body and a liquid outlet tube disposed on the cap body, the cap body having a perforation, the cap body being fitted onto the top cap such that a portion of the top cap extends into the perforation, the inner end of the liquid outlet tube being installed at one end of the guide tube, and the lumen of the liquid outlet tube communicating with the lumen of the guide tube.

8. The ointment bottle according to claim 7, wherein the ointment bottle includes a shell covering the bottle body and the flow guide tube, and the top of the shell is mounted on the bottom of the cap body.

9. The ointment bottle according to claim 7, wherein the driving unit includes a pressing cap, the pressing cap including a cap body, a driving rod and a guide ring, the driving rod and the guide ring extending downward from the cap body respectively, and the guide ring surrounding the driving rod, the bottom of the driving rod being mounted on the top of the rod body, the bottom of the guide ring extending into the through hole of the cap body, and the outer wall of the guide ring conforming to the inner wall of the cap body for defining the through hole.

10. The ointment bottle according to claim 7, wherein the top cap has a guide groove communicating with the through hole of the cap body, wherein the driving unit includes a pressing cap, the pressing cap including a cap body, a driving rod and a guide ring, the driving rod and the guide ring extending downward from the cap body respectively, and the guide ring surrounding the driving rod, the bottom of the driving rod being mounted on the top of the rod body, the bottom of the guide ring extending through the through hole of the cap body into the guide groove of the top cap, and the outer wall of the guide ring conforming to the inner wall of the top cap for defining the guide groove.

11. The ointment bottle according to claim 10, wherein the ointment bottle includes a deformable protective cover, the top of the cap abutting against the middle of the protective cover, and the edge of the protective cover conforming to the outer surface of the cap body.

12. The ointment bottle according to claim 11, wherein the protective cover and the cap are bonded together.

13. The ointment bottle according to claim 11, wherein the protective cover is integrally integrated with the cap.

14. The ointment bottle according to claim 11, wherein the ointment bottle includes a ring cap, the ring cap being mounted on the cap body, and the edge of the protective shield being clamped between the cap body and the ring cap such that the edge of the protective shield conforms to the outer surface of the cap body.

15. The ointment bottle according to claim 14, wherein the ring cap has a liquid outlet channel, the end face of the outer end of the liquid outlet tube is attached to the inner wall of the ring cap, and the lumen of the liquid outlet tube is in communication with the liquid outlet channel of the ring cap.

16. The ointment bottle according to claim 15, wherein the ointment bottle includes a dispensing nozzle, one end of which extends into the lumen of the dispensing tube and the other end of which extends into the dispensing channel of the ring cap.

17. The paste bottle according to claim 7, wherein the outer end of the dispensing tube has a receiving groove, the inner diameter of the receiving groove being larger than the inner diameter of the lumen of the dispensing tube, and the paste bottle includes a preservation valve, the preservation valve being installed in the receiving groove of the dispensing tube for opening and closing the lumen of the dispensing tube.

18. The paste bottle according to claim 16, wherein the outer end of the dispensing tube has a receiving groove, the inner diameter of the receiving groove being larger than the inner diameter of the lumen of the dispensing tube, the paste bottle including a preservation valve, the preservation valve including a second valve plate, a second mounting ring surrounding the second valve plate, and a second connecting arm connecting the second valve plate and the second mounting ring, the mounting ring being fixedly mounted to the receiving groove of the dispensing tube, the second connecting arm being used to suspend the second valve plate at the opening of the lumen of the dispensing tube, in a natural state, the second mounting ring and the second connecting arm keep the second valve plate in a position that closes the lumen of the dispensing tube, when the hydraulic pressure in the lumen of the dispensing tube is greater than the external air pressure, allowing the second valve plate to open the lumen of the dispensing tube, the second connecting arm is deformed by the outwardly moving second valve plate, so that the second connecting arm has a tendency to pull back the second valve plate and move it inward to reset, wherein the outer wall of one end of the dispensing nozzle is in contact with the inner wall of the second mounting ring of the preservation valve.

19. The ointment bottle according to any one of claims 1 to 6, wherein the top cap has a resting arm that rests against the rim of the bottle body.

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