Pump container for paste

Abstract

The present application relates to the technical field of containers. Specifically disclosed is a pump container for a paste, the pump container comprising a cylindrical paste barrel, a sealing cover detachably fixed at one end of the paste barrel, and a piston slidably provided in the paste barrel, the piston being in sealing fit with the inner wall of the paste barrel; a paste outlet tube used for outputting a paste outwards is fixed on the sealing cover, and a one-way valve is mounted on the paste outlet tube; a one-way paste outlet assembly is provided inside the paste barrel at the end close to the sealing cover; the piston is located at the end of the one-way paste outlet assembly away from the sealing cover, and a paste storage cavity used for storing the paste is formed between the piston and the one-way paste outlet assembly; an elastic cup is further provided at the end of the paste barrel close to the sealing cover, the elastic cup being located at the end of the one-way paste outlet assembly away from the piston; a paste outlet cavity is formed between the elastic cup and the one-way paste outlet assembly, the paste outlet tube being communicated with the paste outlet cavity; a button used for pressing the elastic cup is provided on the sealing cover. During use, a toothpaste can be squeezed out simply by pressing the button, such that the present application achieves convenient use.

Description

Ointment pump container Technical Field

[0001] This application relates to the field of container technology, and in particular to a pump container for ointments. Background Technology

[0002] Ointments are semi-solid substances with a certain consistency, widely used in pharmaceuticals, cosmetics, food, and other fields. After production, ointments are packaged in appropriate containers according to their intended use, facilitating subsequent sales and use.

[0003] Toothpaste is a commonly used paste in daily life. After production, toothpaste is usually packaged in a tube, and users can squeeze the tube to apply the toothpaste to their toothbrush as needed. However, as people's living standards continue to improve and their quality of life increases, the tube-squeezing method no longer meets their demands for a higher quality of life. Furthermore, squeezing out the last bit of toothpaste when it's almost used up is quite laborious, seriously affecting the user experience. Summary of the Invention

[0004] To improve the user experience when squeezing toothpaste, this application provides a toothpaste pump container that allows toothpaste to be dispensed simply by pressing a button.

[0005] The ointment pump container provided in this application adopts the following technical solution.

[0006] A pump container for ointments includes a cylindrical ointment cartridge, a detachable cap fixed to one end of the cartridge, and a piston slidably disposed within the cartridge, the piston being sealed to the inner wall of the cartridge. An ointment outlet tube for dispensing ointment is fixed to the cap, and a one-way valve is installed on the outlet tube. A one-way dispensing assembly is disposed inside the cartridge near the cap, the piston being located at the end of the one-way dispensing assembly away from the cap, and a storage cavity for storing ointment is formed between the piston and the one-way dispensing assembly. An elastic cup is also disposed at the end of the cartridge near the cap, the elastic cup being located at the end of the one-way dispensing assembly away from the piston, and an outlet cavity is formed between the elastic cup and the one-way dispensing assembly. Ointment in the storage cavity can only enter the outlet cavity through the one-way dispensing assembly. The outlet tube communicates with the outlet cavity. A button for squeezing the elastic cup is provided on the cap.

[0007] By adopting the above technical solution, a rubber cup and a one-way dispensing component are installed inside the ointment cartridge, forming an ointment dispensing chamber between the rubber cup and the one-way dispensing component. When the ointment cartridge is filled with ointment, pressing the button squeezes the elastic rubber cup, increasing the pressure in the ointment dispensing chamber and forcing the ointment out of the one-way valve, allowing the ointment to be output from the dispensing tube. After releasing the button, the elastic rubber cup returns to its original shape, creating a negative pressure in the ointment dispensing chamber. Since the one-way valve cannot input air into the ointment dispensing chamber, the ointment in the storage chamber is drawn into the ointment dispensing chamber, causing the pressure in the storage chamber to drop. Atmospheric pressure then pushes the piston into the storage chamber, allowing the piston to move with the ointment, keeping the storage chamber in a sealed, constant-pressure state. In use, simply pressing the button allows the ointment in the cartridge to be dispensed, making it convenient and effectively improving the user experience.

[0008] Optionally, the one-way ointment dispensing assembly includes a partition, a fixing ring, and a valve elastically connected to the fixing ring; the partition is fixed to the inner wall of the ointment tube, and an inlet hole for the ointment to pass through is provided through the partition; the fixing ring is coaxially fixed to one end of the partition near the elastic cup, and the valve overlaps the edge of the inlet hole and seals the inlet hole.

[0009] By adopting the above technical solution, a partition and a valve are set up to form a one-way conveying structure in the ointment cylinder. When a negative pressure is formed in the ointment outlet chamber, the valve will be drawn into the ointment outlet chamber, connecting the ointment inlet hole to the ointment outlet chamber, and the ointment in the ointment storage chamber will be drawn into the ointment outlet chamber. After the pressure in the ointment outlet chamber and the ointment storage chamber is restored to equilibrium, the valve will gradually return to its original position and block the ointment inlet hole under the action of elasticity. Even if the valve does not completely seal the ointment inlet hole, when the button is pressed to squeeze the ointment outlet chamber, the pressure in the ointment outlet chamber increases, which will press the valve tightly against the ointment inlet hole, completing the normal output of the ointment.

[0010] Optionally, the elastic cup is hemispherical and inverted on the partition plate; a fixing sleeve is fixed to the elastic cup corresponding to the position of the ointment tube, the fixing sleeve is sleeved on the ointment tube, and a check ring is coaxially fixed to the inner side of the fixing sleeve, the inner side of the check ring is inclined towards the direction of disengaging from the ointment tube.

[0011] By adopting the above technical solution, the elastic cup is set as a hemispherical shape, which allows a cream dispensing cavity to be formed between the elastic cup and the partition, and helps to improve the elastic performance of the elastic cup; a fixing sleeve is set on the elastic cup to facilitate the connection of the cream dispensing tube to the inside of the cup; a check ring is set on the fixing sleeve to prevent the fixing sleeve from slipping off the cream dispensing tube, and at the same time, it can effectively improve the sealing between the fixing sleeve and the cream dispensing tube.

[0012] Optionally, the inner wall of the ointment tube is provided with a groove corresponding to the installation position of the partition and the elastic cup, and the edges of the partition and the elastic cup are engaged in the groove.

[0013] By adopting the above technical solution, a groove is opened on the inner wall of the ointment tube to facilitate the installation of the partition and the elastic leather cup.

[0014] Optionally, the one-way valve includes an elastic valve body coaxially fixed inside the ointment outlet tube. The elastic valve body is configured as an elastic barrel structure with an opening at one end, and an ointment outlet is provided at the end of the elastic valve body. The side walls of the ointment outlet are fitted together and sealed.

[0015] By adopting the above technical solution, an ointment outlet is opened on the elastic valve body, and the side walls of the ointment outlet fit together. During use, the ointment can only be output externally when the internal pressure is greater than the elastic force of the side wall of the ointment outlet. When the pressure approaches equilibrium, the ointment outlet will be quickly closed again.

[0016] Optionally, the ointment outlet is cross-shaped, and an inwardly recessed support portion is provided on the elastic valve body at the position corresponding to the central corner of the ointment outlet.

[0017] By adopting the above technical solution, the ointment outlet is opened in a cross shape and a corresponding support is provided, making the end of the elastic valve body conical, so that the internal ointment can easily push open the ointment outlet, and the ointment outlet will be pressed tighter and tighter when pushed from the outside to the inside, forming a one-way opening structure.

[0018] Optionally, a sealing sleeve is fixed to the ointment dispensing tube to improve the sealing between the one-way valve and the ointment dispensing tube.

[0019] By adopting the above technical solution, the sealing sleeve can effectively improve the sealing performance between the one-way valve and the ointment outlet tube, and prevent leakage.

[0020] Optionally, the outlet of the ointment tube is tilted toward one side of the cap, and the button is located on the other side of the cap, and the button is hinged to the cap.

[0021] By adopting the above technical solution, the dispensing tube and the button are respectively placed on both sides of the cap, which can improve the space utilization on the cap and make the layout neat, thus improving the overall aesthetics.

[0022] Optionally, a cover plate for sealing the ointment tube is fixed to one end of the button near the outlet of the ointment tube.

[0023] By adopting the above technical solution, a cover plate is set on the button. When the button is not pressed, the cover plate closes the outlet of the ointment tube, which can prevent external impurities from contaminating the ointment.

[0024] Optionally, a protective cap is fitted onto one end of the ointment tube near the sealing cap.

[0025] By adopting the above technical solution, when not in use, the protective cap can protect the structure on the seal, thus preventing external impurities from contaminating the ointment.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By setting a rubber cup and a one-way dispensing component inside the ointment cartridge, an ointment dispensing chamber is formed between the rubber cup and the one-way dispensing component. When the ointment cartridge is filled with ointment, pressing the button will squeeze the elastic rubber cup, increasing the pressure in the ointment dispensing chamber and squeezing the ointment out of the one-way valve. The ointment will then be output from the dispensing tube. After releasing the button, the elastic rubber cup returns to its original shape, creating a negative pressure in the ointment dispensing chamber. Since the one-way valve cannot input air into the ointment dispensing chamber, the ointment in the storage chamber will be drawn into the ointment dispensing chamber, causing the pressure in the storage chamber to drop. Atmospheric pressure will then push the piston into the storage chamber, allowing the piston to move with the ointment, keeping the storage chamber in a sealed and constant pressure state. In use, simply pressing the button will squeeze the ointment out of the cartridge, making it convenient and effectively improving the user experience.

[0028] 2. By setting up baffles and valves to form a one-way conveying structure in the ointment cylinder, when a negative pressure is formed in the ointment outlet chamber, the valve will be drawn into the ointment outlet chamber, so that the ointment inlet hole is connected to the ointment outlet chamber. The ointment in the ointment storage chamber is drawn into the ointment outlet chamber. After the pressure in the ointment outlet chamber and the ointment storage chamber is restored to equilibrium, the valve gradually returns to its original position and blocks the ointment inlet hole under the action of elasticity. Even if the valve does not completely seal the ointment inlet hole, when the button is pressed to squeeze the ointment outlet chamber, the pressure in the ointment outlet chamber increases, which will press the valve tightly on the ointment inlet hole, and complete the normal output of the ointment.

[0029] 3. By opening the ointment outlet on the elastic valve body into a cross shape and setting a corresponding support part, the end of the elastic valve body becomes conical, making it easy for the internal ointment to push open the ointment outlet. When pushed from the outside to the inside, the ointment outlet will be pressed tighter and tighter, forming a one-way opening structure. Attached Figure Description

[0030] Figure 1 shows a schematic diagram of the overall structure of the pump container for the ointment in this application.

[0031] Figure 2 shows a cross-sectional view of the pump container for the ointment of this application.

[0032] Figure 3 is a partial view highlighting the structure of the unidirectional ointment dispensing assembly.

[0033] Figure 4 illustrates a schematic diagram of the resilient valve cap in the first embodiment of this application.

[0034] Figure 5 illustrates a second schematic diagram of the resilient valve cap in the first embodiment of this application.

[0035] Figure 6 illustrates a schematic diagram of the resilient valve cap in the second embodiment of this application.

[0036] Figure 7 illustrates a second schematic diagram of the resilient valve cap in the second embodiment of this application.

[0037] Reference numerals: 1. Ointment cartridge; 11. Ointment storage chamber; 12. Ointment dispensing chamber; 13. Slot; 2. Piston; 3. Cap; 31. Button; 311. Cover plate; 312. Seal; 32. Ointment dispensing tube; 321. Sealing groove; 4. Protective cap; 5. Elastic cup; 51. Fixing sleeve; 52. Check ring; 6. One-way ointment dispensing assembly; 61. Partition plate; 611. Ointment inlet; 62. Fixing ring; 63. Valve; 64. Elastic band; 7. One-way valve; 71. Elastic valve body; 711. Elastic thin surface; 712. Support column; 72. Cutting slit; 74. Reset valve; 75. Support part; 751. First limiting ring protrusion; 752. Second limiting ring protrusion; 76. Ointment outlet; 8. Sealing sleeve; 81. Sealing ring protrusion. Detailed Implementation

[0038] The present application will be further described in detail below with reference to Figures 1-7.

[0039] This application discloses a pump container for ointments. Referring to Figures 1 and 2, it includes an ointment cartridge 1, a piston 2, a cap 3, a button 31, and a protective cover 4. The ointment cartridge 1 is a cylindrical tube, and the piston 2 is coaxially and slidably installed inside the ointment cartridge 1, sealing it to the inner wall of the cartridge 1. The cap 3 is detachably installed at one end of the ointment cartridge 1 by means of threads or snaps. An ointment dispensing tube 32 is integrally formed on one side of the cap 3, and the button 31 is located on the other side of the cap 3, hinged to the cap 3. The protective cover 4 is fitted onto the end of the ointment cartridge 1 near the cap 3, covering the cap 3 inside for protection. In use, simply rotating and pressing the button 31 will squeeze the ointment out of the ointment cartridge 1 through the internal structure, making it convenient to use.

[0040] Referring to Figures 2 and 3, an elastic cup 5 and a one-way dispensing assembly 6 are provided at the end of the ointment cartridge 1 near the cap 3. The elastic cup 5 is located on the side near the dispensing tube 32 and is connected to the dispensing tube 32. The piston 2 is located on the side of the one-way dispensing assembly 6 away from the elastic cup 5, and an ointment storage chamber 11 for storing ointment is formed between the one-way dispensing assembly 6 and the piston 2. An ointment dispensing chamber 12 is formed between the elastic cup 5 and the one-way dispensing assembly 6, and the ointment dispensing tube 32 communicates with the ointment dispensing chamber 12. A one-way valve 7 is installed in the ointment dispensing chamber 12.

[0041] When in use, rotating and pressing button 31 will cause button 31 to press down on the elastic cup 5, causing the pressure in the ointment dispensing chamber 12 to rise. The ointment in the ointment dispensing chamber 12 will be squeezed out and output from the one-way valve 7 into the ointment dispensing tube 32, completing the ointment dispensing. After releasing button 31, the elastic cup 5 will return to its original shape under its own elasticity. At this time, a negative pressure will be formed in the ointment dispensing chamber 12, while the ointment storage chamber 11 will be at normal pressure. The ointment in the ointment storage chamber 11 will push open the one-way ointment dispensing component 6 and enter the ointment dispensing chamber 12. At the same time, the external atmospheric pressure will also push the piston 2 to move upward to compensate for the space for ointment discharge.

[0042] The one-way ointment dispensing assembly 6 includes a partition 61 coaxially fixed to the inner wall of the ointment cylinder 1, a fixing ring 62, and a valve 63 elastically connected to the fixing ring 62. The partition 61 is a circular half-body, with an ointment inlet hole 611 coaxially extending through it. The fixing ring 62 is coaxially fixed to the side of the partition 61 near the elastic cup 5. The valve 63 is a circular plate, with an elastic band 64 connecting the periphery of the valve 63 to the fixing ring 62, for the valve 63 to be coaxially connected to the center of the fixing ring 62. In its free state, the valve 63 abuts against the ointment inlet hole 611 and seals it.

[0043] When the pressure inside the ointment outlet chamber 12 increases, the valve 63 will be pressed tightly against the ointment inlet 611 to seal it. When a negative pressure is formed inside the ointment outlet chamber 12, the valve 63 will be drawn into the ointment outlet chamber 12, so that the ointment in the ointment storage chamber 11 enters the ointment outlet chamber 12.

[0044] The elastic cup 5 is hemispherical and is inverted onto the one-way ointment dispensing component 6. A retaining sleeve 51 is integrally formed coaxially with the elastic cup 5 at the position corresponding to the ointment dispensing tube 32, and the retaining sleeve 51 is fitted onto the ointment dispensing tube 32. A check ring 52 is integrally formed coaxially with the inner wall of the retaining sleeve 51, with the inner side of the check ring 52 inclined towards the direction of disengagement from the ointment dispensing tube 32, thereby effectively preventing the retaining sleeve 51 from slipping off the ointment dispensing tube 32. A retaining groove 13 is provided on the inner wall of the ointment cylinder 1 at the installation positions of the cup and the partition 61, and the edges of the elastic cup 5 and the partition 61 are engaged and fixed within the retaining groove 13.

[0045] The one-way valve 7 includes an elastic valve body 71, which includes an elastic thin surface 711 and a support column 712. The support column 712 extends along its axis to form a channel for the flow of ointment. The elastic thin surface 711 seals and covers one end of the support column 712, and the other end of the support column 712 is provided with a support portion 75 for inserting an ointment tube.

[0046] In one embodiment, referring to Figures 4 and 5, the elastic thin surface 711 is a centrally convex arc surface, and a plurality of slits 72 are radially arranged from its center outwards. In different embodiments, the number of slits 72 can be selected from 3 to 8. In this embodiment, the number of slits 72 is preferably 6, and they are evenly distributed in the circumferential direction around the axis of the support column 712. Each slit 72 divides the elastic thin surface 711 into a plurality of deformable and flip-up reset flaps 74. The reset flaps 74 close naturally to form a sealing structure when not under pressure. During the pressing process of the ointment pump, when an upward positive pressure is formed inside, the reset flaps 74 flip outwards and open to form a star-shaped ointment outlet 76, allowing the ointment to flow out from the channel.

[0047] In this embodiment, the reset flap 74 is a three-dimensional elastic sheet-like structure surrounded by slits 72. It can deform under pressure and return to its initial closed state due to the material's own elasticity after the pressure is released. This structure ensures that the outlet remains tightly sealed when the ointment pump is not in operation, preventing air or impurities from entering the container. Simultaneously, it can respond promptly and open under pump pressure, improving ointment dispensing efficiency and cleanliness. In different embodiments, the three-dimensional structure of the reset flap 74 can be dome-shaped, conical, spherical, or a gradually curved surface. Its curvature can be set according to usage requirements to adapt to different opening response times or deformation requirements.

[0048] Furthermore, the elastic thin surface 711 can gradually thicken, gradually thin, or have a uniform thickness from the edge to the center. In a preferred embodiment, the elastic thin surface 711 gradually thins from the periphery to the center, thereby making the central region more easily deformable during pumping and improving the sensitivity of opening.

[0049] The sidewall of the support column 712 and the elastic thin surface 711 are connected by a rounded transition to avoid sharp corners or edges, which helps to improve the overall mechanical stress distribution, prevent fatigue damage to the material during repeated deformation, and improve service life. In terms of material selection, both the support column 712 and the elastic thin surface 711 can be made of elastic material, preferably silicone, which satisfies both good elastic recovery performance and good temperature resistance, chemical resistance, and food contact safety. In different embodiments, the elastic material can be silicone, or other polymer materials such as rubber or polyurethane, as long as it is a non-toxic polymer material that can naturally return to its original position and close the cut 72 after deformation.

[0050] In different embodiments, the structure of the slit 72 can also vary. In addition to the basic straight radial slit 72, it can also be an arc-shaped slit 72, a segmented zigzag slit 72, or a composite slit 72 structure with a preset recessed section, to adjust the flipping method of the reset flap 74 and the opening pressure threshold. The depth of the slit 72 can be set to be fully through or semi through. In the semi through structure, a controllable membrane thickness is left at the bottom of the slit 72, thereby forming a one-time opening structure upon initial use.

[0051] A support portion 75 is disposed at the end of the support column 712 away from the elastic thin surface 711. Specifically, the support portion 75 is an elastic snap-fit ​​portion disposed on the outer side of the support column 712. The support portion 75 includes two retaining protrusions disposed on the side of the support column 712 and extending around its axis. The two retaining protrusions are arranged opposite each other, forming a snap-fit ​​groove between them for engaging with the insertion component of the toothpaste pump body. The retaining protrusions undergo slight elastic deformation when inserted into the pump body, providing a reliable snap-fit ​​force, and automatically spring back to the positioning state after release.

[0052] Optionally, the two limiting protrusions are defined as a first limiting protrusion 751 and a second limiting protrusion 752, respectively. The side of the first limiting protrusion 751 closest to the elastic thin surface 711 is connected to the support column 712 in an arc manner, and the side away from the elastic thin surface 711 is connected at a right angle, which is used for anti-reverse limiting. The side of the second limiting protrusion 752 closest to the elastic thin surface 711 is connected to the outer wall of the column in an included angle manner, thereby providing initial guidance and pre-tightening elasticity during the insertion of the pump body.

[0053] In different embodiments, the connection between the first limiting protrusion 751 and the support column 712 can also be a sloped transition or a curved transition, or a locally thickened structure can be used to enhance the anti-reverse function; the second limiting protrusion 752 can also adopt a rounded corner connection or a flexible rib structure to improve the adaptability of insertion force. In another optional solution, the snap-fit ​​groove between the two protrusions can also be provided with reinforcing ribs or a flexible inner lip structure to improve the mating sealing performance and enhance the connection stability.

[0054] In another embodiment, referring to Figures 6 and 7, the slit 72 includes two mutually perpendicular slits 72 that intersect at the center of the elastic thin surface 711 to form a cross-shaped structure. These two slits 72 divide the elastic thin surface 711 into four mutually symmetrical reset petals 74. The adjacent edges of the geometry of each reset petal 74 are defined by two adjacent slits 72, and the bottom edge is connected to the edge of the support column 712, forming a unit structure that can elastically flip under pressure.

[0055] In a preferred embodiment, each reset flap 74, in its central region on the side furthest from the intersection center of the cut 72, is recessed into the adjacent support column 712, thereby forming an inwardly curved support portion 75 at that location. The two sides of the support portion 75 naturally form slightly triangular arcuate segments. This structure remains naturally closed when not pressed, and symmetrically flips open along the direction of the cut 72 under positive pressure, forming a cross-shaped ointment outlet 76 between the four reset flaps 74. Specifically, during use, the support portion 75 supports the ointment outlet 76, allowing it to open when squeezed by the ointment within the dispensing cavity; when the ointment outlet 76 is subjected to reverse pressure, the support portion 75 supports the ointment outlet 76, causing it to press inward and seal, forming a unidirectional ointment dispensing structure.

[0056] Preferably, the elastic thin surface 711 forms a cross-shaped planar structure in the non-recessed area. This cross-shaped planar structure is mirror-symmetrical to the cut 72 and is located on the same horizontal plane in the undeformed state, which helps to ensure that the reset flap 74 fits tightly in the closed state and maintains structural stability.

[0057] Furthermore, to improve the elastic response performance of the reset flap 74 region, the recessed region and the non-recessed region are connected by a transition arc structure, so that the reset flap 74 generates a continuous deformation path when it flips open, avoiding material fatigue or fracture caused by local stress concentration.

[0058] In other embodiments, the elastic thin surface 711 and the supporting column 712 can be integrally formed, or they can be fixedly connected by means of heat fusion, interlocking connection, etc., depending on the specific mold process requirements.

[0059] In a further optimization, the slits 72 can also be configured as three or four intersecting slits, forming a six- or eight-lobed structure to accommodate the discharge requirements of higher flow rates or pastes of different viscosities. In another variant embodiment, the recessed portion of the reset lobe 74 can also be a polygonal arc surface, a gradually varying thickness structure, or a multi-segment curvature structure to adjust the opening angle and rebound speed.

[0060] A sealing sleeve 8 is installed on the ointment dispensing tube 32 at the position corresponding to the one-way valve 7. The sealing sleeve 8 is coaxially inserted into the end of the ointment dispensing tube 32 near the sealing groove 321. The end of the sealing sleeve 8 near the one-way valve 7 extends into the one-way valve 7. An annular protrusion is integrally formed on the sealing sleeve 8 at the position corresponding to the sealing groove 321. The annular protrusion is inserted into the sealing groove 321, thereby effectively improving the sealing performance between the sealing sleeve 8 and the ointment dispensing tube 32. A sealing annular protrusion 81 is integrally formed on the end of the sealing sleeve 8 near the end of the ointment dispensing tube 32. The sealing annular protrusion 81 is positioned at the end of the ointment dispensing tube 32 located inside the elastic cup 5, which can effectively prevent ointment from entering between the sealing sleeve 8 and the ointment dispensing tube 32.

[0061] A cover plate 311 is integrally formed at the end of button 31 near the outlet of the ointment tube 32. When button 31 is in its free state, cover plate 311 rests on the end of ointment tube 32 to seal it and prevent external impurities from entering the ointment. At the end of button 31 away from cover plate 311, a seal 312 is fixed on the outer wall of button 31 near the cover 31. The product comes with seal 312 at the factory. When using the product, seal 312 needs to be torn off to facilitate checking whether the purchased product has been used.

[0062] The implementation principle of the ointment pump container disclosed in this application is as follows: by setting up an elastic cup 5, a one-way ointment dispensing component 6 and a one-way valve 7, the cavity inside the ointment cylinder 1 is divided into an ointment storage chamber 11 and an ointment dispensing chamber 12. When the elastic cup 5 is pressed by the button 31, the ointment in the ointment storage chamber 11 is squeezed and output from the one-way valve 7. When the elastic cup 5 is reset, the ointment in the ointment storage chamber 11 can be drawn into the ointment dispensing chamber 12. The overall structure is simple and easy to use, which can effectively improve the user experience.

[0063] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pump container for a paste, characterized in that: The device includes a cylindrical ointment cartridge (1), a cap (3) detachably fixed to one end of the ointment cartridge (1), and a piston (2) slidably disposed inside the ointment cartridge (1). The piston (2) is sealed to the inner wall of the ointment cartridge (1). An ointment outlet tube (32) for dispensing ointment is fixed on the cap (3), and a one-way valve (7) is installed on the outlet tube (32). A one-way ointment dispensing assembly (6) is disposed inside the ointment cartridge (1) at one end near the cap (3). The piston (2) is located at the end of the one-way ointment dispensing assembly (6) away from the cap. The piston (2) and the one-way ointment dispensing assembly (6) are connected in a closed manner. A storage cavity (11) for storing ointment is formed in the middle; an elastic cup (5) is also provided at one end of the ointment cylinder (1) near the cap (3), the elastic cup (5) is located at the end of the one-way ointment dispensing component (6) away from the piston (2), an ointment dispensing cavity (12) is formed between the elastic cup (5) and the one-way ointment dispensing component (6), the ointment in the storage cavity (11) can only enter the ointment dispensing cavity (12) through the one-way ointment dispensing component (6); the ointment dispensing tube (32) is connected to the ointment dispensing cavity (12); a button (31) for squeezing the elastic cup (5) is provided on the cap (3).

2. The pump container for a paste according to claim 1, characterized in that The one-way ointment dispensing assembly (6) includes a partition (61), a fixing ring (62), and a valve (63) elastically connected to the fixing ring (62); the partition (61) is fixed on the inner wall of the ointment tube (1), and an ointment inlet hole (611) for the ointment to pass through is provided on the partition (61); the fixing ring (62) is coaxially fixed to one end of the partition (61) near the elastic cup (5), and the valve (63) overlaps the edge of the ointment inlet hole (611) and seals the ointment inlet hole.

3. The pump container for a paste according to claim 2, characterized in that The elastic cup (5) is hemispherical and inverted on the partition plate (61); the elastic cup (5) is fixed with a fixing sleeve (51) corresponding to the position of the ointment tube (32), the fixing sleeve (51) is sleeved on the ointment tube (32), and a check ring (52) is coaxially fixed on the inner side of the fixing sleeve (51), and the inner side of the check ring (52) is inclined towards the direction of disengaging from the ointment tube (32).

4. The pump container for a paste according to claim 2, characterized in that The inner wall of the ointment tube (1) is provided with a slot (13) corresponding to the installation position of the partition (61) and the elastic cup (5), and the edges of the partition (61) and the elastic cup (5) are engaged in the slot (13).

5. The pump container for a paste according to claim 1, characterized in that, The one-way valve (7) includes an elastic valve body (71) coaxially fixed inside the ointment outlet tube (32). The elastic valve body (71) is configured as an elastic barrel structure with an opening at one end. An ointment outlet (76) is provided at the end of the elastic valve body (71), and the side walls of the ointment outlet (76) are sealed to each other.

6. The pump container for a paste according to claim 5, characterized in that The ointment outlet (76) is cross-shaped, and an inwardly recessed support portion (75) is provided on the elastic valve body (71) at the position corresponding to the center corner of the ointment outlet (76).

7. The pump container for a paste according to claim 1, characterized in that The out-paste pipe (32) is fixed with a sealing sleeve (8) for improving the sealing between the one-way valve (7) and the out-paste pipe (32).

8. The pump container for a paste according to claim 1, characterized in that The outlet of the out-paste pipe (32) is inclined to one side of the cover (3), and the button (31) is located on the other side of the cover (3) and is hingedly fixed on the cover (3).

9. The pump container for a paste according to claim 8, characterized in that The button (31) is fixed with a cover plate (311) for sealing the out-paste pipe (32) near one end of the outlet of the out-paste pipe (32).

10. The pump container for a paste according to claim 1, characterized in that The paste cylinder (1) is sleeved with a protective cover (4) near one end of the cover (3).

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