CN117598579A - Spring-free full-plastic push type cream bottle - Google Patents

Abstract

The utility model relates to a spring-free full-plastic push type cream bottle, which relates to the technical field of cosmetic packaging and comprises a bottle body, a push top cover and a pump body component, wherein the bottle body comprises an outer shell and an inner shell which is slidably arranged in the outer shell, an installation cavity is arranged in the outer shell, an accommodating cavity is arranged in the inner shell, and the push top cover is arranged at the top of the inner shell; the pump body component comprises a piston part, a soft pump arranged in the installation cavity and used for driving the piston part to slide, a first one-way valve used for allowing external air to flow into the soft pump, and a second one-way valve used for allowing air in the soft pump to flow into the inner shell; the pressing top cover is provided with a liquid outlet channel, a liquid outlet piston for opening and closing the liquid outlet channel is slidably arranged in the liquid outlet channel by the pressing top cover, and the liquid outlet piston is connected with the piston piece through a connecting shaft. According to the liquid outlet device, the liquid outlet piston is driven to slide to open and close the liquid outlet channel through the piston piece, so that the conditions that liquid remains in the flow channel and solidification occurs can be reduced.

Description

Spring-free full-plastic push type cream bottle

Technical Field

The application relates to the technical field of cosmetic packaging, in particular to a springless full-plastic push type cream bottle.

Background

At present, a container with a pumping head is generally used in the cosmetic industry to hold emulsion, essence, cream and the like, and the pumping head on the container is generally arranged to press out liquid, so that a user can pump the liquid in the container out for use according to the pumping head.

The push type container bottle for containing liquid such as emulsion generally comprises a container body and an air pump component arranged in the container body, wherein a flow channel for liquid to flow out is arranged in the container body, the air pump component comprises a pump head, a pump core, an air pump spring, a pump body and an air pump piston, a user presses the pump head, the air pump piston slides downwards in the container body, air in the container body is compressed through the air pump piston, and accordingly liquid in the container body is pumped out, the liquid flows out through the flow channel, the user releases the pump head, and the air pump piston is reset under the driving of the air pump spring, so that the liquid is not pumped out any more. In the use, when the user loosens the pump head, the liquid that has not been pumped in the runner flows back to the container body in, but because the texture of liquid such as emulsion, essence or cream is comparatively thick, in the backward flow, the circumstances such as the easy pollution that causes of more thick liquid and air contact and the easy solidification that takes place of more thick liquid residue to the runner in to influence follow-up use.

Disclosure of Invention

In order to reduce the situations that liquid in a container bottle remains in a runner and solidification and the like in the using process, the application provides a springless all-plastic push type cream bottle.

The application provides a no spring plastic push type cream bottle adopts following technical scheme:

the bottle comprises a bottle body, a pressing top cover arranged above the bottle body and a pump body assembly arranged in the bottle body, wherein the bottle body comprises an outer shell and an inner shell slidably installed in the outer shell, an installation cavity for slidably installing the inner shell is formed in the outer shell, a containing cavity for containing liquid is formed in the inner shell, and the pressing top cover is installed at the top of the inner shell; the pump body assembly comprises a piston piece arranged in the accommodating cavity in a sliding manner, a soft pump arranged in the mounting cavity and abutted to the bottom side of the inner shell for driving the piston piece to slide, a first one-way valve arranged at the bottom side of the soft pump for allowing external air to flow into the soft pump, and a second one-way valve arranged at the bottom side of the inner shell for allowing air in the soft pump to flow into the inner shell; the pressing top cover is provided with a liquid outlet channel for liquid to flow out, the pressing top cover slides in the liquid outlet channel to be provided with a liquid outlet piston for opening and closing the liquid outlet channel, the liquid outlet piston is connected with the piston piece through a connecting shaft, and the piston piece drives the liquid outlet piston to slide.

By adopting the technical scheme, when the springless full-plastic push type cream bottle is used, liquid such as emulsion, cream and the like is contained in the containing cavity of the inner shell, a user presses the top cover to push the inner shell downwards, so that the soft pump at the bottom side of the inner shell is extruded, air flowing in the soft pump through the first one-way valve flows into the inner shell through the second one-way valve, so that the piston part in the inner shell is extruded upwards through air pressure, the liquid outlet piston is driven to slide upwards, the liquid outlet channel is opened, and meanwhile, the piston part presses the liquid upwards, so that the liquid in the containing cavity can be pumped out; when the user loosens the top cap, the soft pump resumes the original state according to self form for the piston spare loses gas pressure effect, thereby slides downwards according to gravity reason, drives out liquid piston and slides downwards from this, thereby closes the drain passageway, because the slip of out liquid piston, reducible liquid is because comparatively sticky and remain in the drain passageway, and can close the drain passageway through out liquid piston and better separate external air and dust etc. and get into the holding cavity through the drain passageway in, the condition such as solidification takes place in the drain passageway can be reduced from this, also the condition such as pollution or oxidation take place for the liquid in the reducible holding cavity.

Optionally, one side of pressing the top cap towards the piston part is provided with the conduction ring body, set up the via hole that runs through its both ends on the conduction ring body, the via hole forms to go out the liquid passageway, go out the liquid piston towards the one end of piston part be provided with the spacing convex part of conduction ring body tip slip butt.

Through adopting above-mentioned technical scheme, when the liquid piston drives the slip through the slip of piston spare, when the liquid in the holding cavity uses more, the piston spare only need upwards slide more distance and just can pump the liquid, and when the in-process that the piston spare upwards slided, the spacing convex part of liquid piston offsets with the tip of switch-on ring body to can play limiting displacement to the slip of liquid piston, reducible liquid piston takes place at the condition emergence of the drive roll-off via hole of piston spare.

Optionally, the connecting shaft includes at least two hard tube bodies and a hose body for connecting two hard tube bodies, one hard tube body can be arranged in another hard tube body in a penetrating way.

Through adopting above-mentioned technical scheme, when the spacing convex part of play liquid piston offsets with the tip that switches on the ring body, because link to each other through a connecting axle between piston spare and the play liquid piston, when play liquid piston stops upwards sliding, easily influence the upward sliding of piston spare, set up the connecting axle into two at least hard body and be used for connecting the hose body of two hard body from this, when play liquid piston stops upwards sliding, a hard body upwards slides under the effect of hose body and wears in another hard body, so that the piston spare can continue upwards sliding, the condition that can reduce play liquid piston to the sliding of piston spare plays the influence takes place.

Optionally, the one end that switches on the ring body and deviate from the piston spare is provided with out liquid guiding portion, go out liquid piston deviate from the one end of piston spare be provided with go out the direction cone portion of liquid guiding portion adaptation.

Through adopting above-mentioned technical scheme, when liquid flows out through the via hole, the play liquid guiding portion that switches on the ring body tip can play the guide effect to the outflow of liquid, and be provided with on the piston member with play the direction cone portion of liquid guiding portion adaptation also can play the guide effect to the outflow of liquid simultaneously, when stopping pumping out liquid, also can seal the via hole with the direction cone portion of play liquid guiding portion adaptation to can improve the sealing performance of play liquid piston.

Optionally, the springless all-plastic pressing type cream bottle further comprises a sealing cover detachably mounted on the top side of the inner shell and covered on the upper side of the pressing top cover.

Through adopting above-mentioned technical scheme, when storing liquid through the full plastic push type cream bottle of no spring, can install sealed lid in inner shell top side, make sealed lid from this and close in pressing the top cap upside to the accessible is sealed the via hole further, reduces external air or impurity and gets into the holding cavity through the clearance between via hole pore wall and the play liquid piston, thereby can further improve the leakproofness of no spring full plastic push type cream bottle.

Optionally, the liquid outlet piston is provided with a sealing convex ring which is in sealing contact with the edge of the through hole at the end part of the guide cone part, which is far away from the piston part.

Through adopting above-mentioned technical scheme, when the user loosens and presses the top cap, the piston piece loses power and drives out liquid piston when sliding downwards and slide downwards for the sealed bulge loop that the end that goes out the liquid piston and deviate from the piston piece seals the clearance between via hole and the liquid piston sooner, and reducible top cap surface is pressed liquid after user contact and is passed through the via hole backward flow to the holding cavity in, thereby reducible exposing to the condition emergence of the pollution lower floor liquid in the holding cavity of external liquid backward flow to the holding cavity, thereby improves the purity degree of liquid in the holding cavity.

Optionally, the pressing top cover is provided with a first guide surface for liquid to flow out at the edge of one side of the through hole, which is away from the piston member.

Through adopting above-mentioned technical scheme, when liquid is pressed out by the piston member, liquid flows out through the via hole, and the first guide face of accessible pressing top cap surface plays the guide effect to the flow of liquid to the condition that the external liquid of accessible first guide face sets up further reduces to pump out flows back to the holding cavity in takes place.

Optionally, the liquid outlet piston is provided with a second guide surface on an end surface facing away from the piston member for liquid outflow.

Through adopting above-mentioned technical scheme, when liquid is pressed out by the piston member, liquid flows out through the via hole, and the second guide face on the accessible play liquid piston tip plays the guide effect to the flow of liquid to the condition that the external liquid of accessible second guide face set up further reduction pump back to the holding cavity in takes place.

Optionally, a side of the sealing cover facing the pressing top cover is provided with a blocking convex part propped against the top side of the pressing top cover, and the pressing top cover is provided with a clamping ring groove at the periphery of the through hole for clamping the end part of the blocking convex part.

Through adopting above-mentioned technical scheme, when closing sealed lid, seal the sealed seal towards the wall convex part sealing card of pressing top cap one side go into the joint annular on the pressing top cap to the accessible cuts off the cooperation of convex part and joint annular and carries out further sealedly to the via hole, thereby can further improve the leakproofness of this no spring all-plastic pressing formula cream frost bottle.

Optionally, a liquid pressing groove for clamping the conducting ring body is formed in one side, facing the pressing top cover, of the piston piece.

Through adopting above-mentioned technical scheme, in the use, when the liquid in the holding chamber gradually reduces, uses to the later stage, and when the piston piece upwards slided to being close to one side of pressing the top cap, switch on the ring body but joint in the liquid recess of pressing of piston piece to reducible piston piece and press the clearance size between the top cap, can pump the liquid in the holding chamber more completely, reducible liquid volume that remains to the holding chamber in.

In summary, the present application includes at least one of the following beneficial technical effects:

the application includes the body, presses top cap and pump body subassembly, and pump body subassembly includes piston spare, soft pump, first check valve and second check valve, presses the top cap to be provided with out liquid piston in liquid passageway, goes out liquid piston and links to each other with the piston spare through a connecting axle, because the slip of going out liquid piston, reducible liquid is because comparatively sticky and remain in liquid passageway, and can close liquid passageway through out liquid piston and better wall outside air and dust etc. get into the holding cavity through liquid passageway.

The connecting shaft comprises at least two hard pipe bodies and a hose body for connecting the two hard pipe bodies, wherein one hard pipe body can be penetrated into the other hard pipe body, and when the liquid outlet piston stops sliding upwards, the one hard pipe body slides upwards to penetrate into the other hard pipe body under the action of the hose body, so that the piston piece can continue sliding upwards;

the application still including demountable installation in inner shell top side and lid in press the sealed lid of top lid upside, accessible sealed lid is further sealed the via hole, reduces outside air or impurity and gets into the holding cavity through the clearance between via hole pore wall and the play liquid piston.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a springless full plastic push type cream bottle according to an embodiment of the present application.

Fig. 2 is a cross-sectional view of the overall structure of a springless all-plastic push-type cream bottle according to an embodiment of the present application.

Fig. 3 is an enlarged view of fig. 2 at a.

Fig. 4 is an enlarged view of fig. 2 at B.

Fig. 5 is an enlarged view of fig. 2 at C.

Fig. 6 is a schematic cross-sectional view of a piston member of a springless full plastic push type cream bottle of an embodiment of the present application, pressed to an upper limit position.

Reference numerals illustrate: 1. a body of the bottle body; 11. an outer housing; 111. a mounting chamber; 12. an inner housing; 121. a receiving chamber; 122. a mounting convex part; 123. the second limiting bulge; 124. a second fixed collar; 13. a fixed ring body; 131. a first fixed collar; 2. pressing the top cover; 21. installing a clamping groove; 22. the first limiting protrusion; 23. a liquid outlet channel; 24. conducting the ring body; 241. a via hole; 242. a liquid outlet guide part; 25. a first guide surface; 26. the clamping ring groove is connected; 3. sealing cover; 31. a partition convex portion; 4. a pump body assembly; 41. a piston member; 411. a liquid pressing groove; 412. a mounting groove; 42. a soft pump; 43. a first one-way valve; 44. a second one-way valve; 5. a liquid outlet piston; 51. a guide cone portion; 52. a second guide surface; 53. sealing the convex ring; 54. a limit protrusion; 55. a receiving groove; 6. a connecting shaft; 61. a hard tube body; 62. a hose body.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses a spring-free all-plastic push type cream bottle. Referring to fig. 1 and 2, the spring-free full-plastic push type cream bottle comprises a bottle body 1, a push top cover 2 arranged above the bottle body 1, a sealing cover 3 detachably arranged on the bottle body 1 and covered on the outer side of the push top cover 2, and a pump body assembly 4 arranged in the bottle body 1 and used for pumping out liquid in the bottle body 1.

Referring to fig. 2, the body 1 includes an outer case 11 and an inner case 12 slidably installed up and down inside the outer case 11. The outer casing 11 is provided with a mounting chamber 111 for slidably mounting the inner casing 12, and the pump body assembly 4 is also mounted in the mounting chamber 111 and is built in the bottom side of the inner casing 12. The internal casing 12 is provided with the holding cavity 121 that is used for holding the liquid in, press the top cap 2 to install in the top of internal casing 12, press the top cap 2 and the installation mode of internal casing 12 can have a variety, in this embodiment, press the top cap 2 to dismantle the joint in the top of internal casing 12, see fig. 3, press the top cap 2 to one side of internal casing 12 to offer the installation draw-in groove 21, the top side of internal casing 12 is provided with the installation convex part 122 of joint in the installation draw-in groove 21, and press the top cap 2 to be provided with first spacing protruding 22 on the cell wall of installation draw-in groove 21, the internal casing 12 also is provided with the second spacing protruding 123 with first spacing protruding 22 meshing on the top of installation convex part 122, the fixed cooperation of accessible first spacing protruding 22 and second spacing protruding 123 plays the spacing effect to the installation of pressing the top cap 2, can improve the stability of pressing the top cap 2 installation, and this installation mode is comparatively convenient.

Referring to fig. 2, the sealing cover 3 is detachably mounted on the bottle body 1, in this embodiment, the sealing cover 3 is mounted on the outer side of the top of the inner shell 12 by threads, and meanwhile, the pressing top cover 2 can be sealed by the sealing cover 3, because in this embodiment, the liquid in the inner shell 12 needs to be pumped out by pressing the top cover 2, the pump can be sealed by the sealing cover 3, and external air or impurities and the like can be reduced from entering the accommodating cavity 121 of the inner shell 12, so that the tightness of the springless full-plastic pressing type cream bottle can be improved.

Referring to fig. 2, the pump body assembly 4 includes a piston member 41 slidably disposed in the accommodating chamber 121, a soft pump 42 disposed in the mounting chamber 111 and abutting against the bottom side of the inner housing 12 for driving the piston member 41 to slide, a first check valve 43 disposed at the bottom side of the soft pump 42 for allowing the external air of the outer housing 11 to flow into the soft pump 42, and a second check valve 44 disposed at the bottom side of the inner housing 12 for allowing the air in the soft pump 42 to flow into the inner housing 12. The pressing top cover 2 is provided with a liquid outlet channel 23 for liquid to flow out, in this embodiment, a conducting ring 24 is disposed on a side of the pressing top cover 2 facing the piston member 41, and a conducting hole 241 penetrating through the upper and lower ends of the conducting ring 24 is formed on the conducting ring 24, and the conducting hole 241 is formed as the liquid outlet channel 23 for liquid to flow out. In this embodiment, the pressing top cover 2 is made of elastic plastic material, and the conducting ring 24 and the pressing top cover 2 are integrally injection molded, so that the structure has strong stability.

Referring to fig. 2, a side of the piston member 41 facing the pressing top cover 2 is provided with a liquid pressing groove 411 for the conductive ring body 24 to be snapped in. In this embodiment, the side of the piston member 41 facing the pressing top cover 2 is attached to the bottom side of the pressing top cover 2, and when the piston member 41 slides to a side close to the pressing top cover 2, the conducting ring 24 can be clamped in the liquid pressing groove 411 of the piston member 41, so that the gap between the piston member 41 and the pressing top cover 2 can be reduced, and when the liquid in the accommodating chamber 121 gradually decreases, the piston member 41 is attached to the pressing top cover 2, so that the liquid in the accommodating chamber 121 can be pumped out more completely, and the amount of the liquid remaining in the accommodating chamber 121 can be reduced.

Referring to fig. 2, the springless full plastic push type cream bottle further comprises a liquid outlet piston 5 which is arranged in the liquid outlet channel 23 in a sliding manner up and down and is used for opening and closing the liquid outlet channel 23. The tapping piston 5 is connected to a piston member 41 disposed in the inner housing 12 via a connecting shaft 6, and the tapping piston 5 is driven to slide by the piston member 41.

In the use process, a user presses the top cover 2 to downwards extrude the inner shell 12, so that the inner shell 12 extrudes the soft pump 42 at the bottom side of the inner shell, gas in the soft pump 42 flows into the inner shell 12 through the second one-way valve 44, so that the piston piece 41 in the inner shell 12 is extruded upwards through air pressure, and simultaneously the liquid outlet piston 5 is driven to slide upwards, the liquid outlet channel 23 is opened, and liquid can be pumped out through the liquid outlet channel 23 along with the extrusion of the piston piece 41. When the user releases the pressing cap 2, the soft pump 42 sucks the external air through the first check valve 43 to restore the original shape, the inner housing 12 slides upward, and the piston member 41 loses power to slide downward due to gravity, thereby driving the liquid outlet piston 5 to slide downward and closing the liquid outlet channel 23.

Referring to fig. 4, the top side of the outer case 11 is mounted with a fixing ring body 13 and the inner side of the fixing ring body 13 is provided with a first fixing collar 131 for abutting against the inner case 12. The outer side of the inner shell 12 is provided with a second fixing convex ring 124 in sliding abutting fit with the first fixing ring 13, in this embodiment, the fixing ring 13 is screw-mounted on the top side of the outer shell 11, and the outer shell 11 and the first fixing convex ring 131 are integrally injection molded. The second fixing collar 124 is integrally injection molded with the inner housing 12. When the soft pump 42 is restored, the soft pump 42 drives the inner shell 12 to slide upwards in the outer shell 11, and after the inner shell 12 slides upwards for a certain distance, the first fixed ring 13 on the inner shell 12 abuts against the second fixed ring 13 on the fixed ring 13, so that the sliding of the inner shell 12 can be limited, and the occurrence of the sliding of the inner shell 12 from the outer shell 11 can be reduced.

Referring to fig. 5, the conducting ring body 24 is provided with a liquid outlet guide 242 at an end facing away from the piston member 41. One end of the tapping piston 5 facing away from the piston member 41 is provided with a guiding cone 51 adapted to the tapping guide 242. In the present embodiment, the liquid discharge guide 242 is provided as a portion having a guide slope provided so as to gradually spread in a direction away from the piston member 41, and the guide taper portion 51 of the liquid discharge piston 5 is provided with a tapered surface fitting the guide slope. When the liquid flows out through the through hole 241, the liquid outlet guide portion 242 at the end of the through ring 24 can guide the liquid to flow out, and the guide cone portion 51 matched with the liquid outlet guide portion 242 is arranged on the piston member 41 and can also guide the liquid to flow out, when the liquid is stopped from being pumped out, the guide cone portion 51 matched with the liquid outlet guide portion 242 can also seal the through hole 241, so that the sealing performance of the liquid outlet piston 5 can be improved.

Referring to fig. 5, the pressing cap 2 is provided with a first guide surface 25 for the outflow of liquid at a side edge of the through hole 241 facing away from the piston member 41. In the present embodiment, the first guide surface 25 is provided so as to gradually decrease in a direction away from the through hole 241. When the liquid is pressed out by the piston member 41, the liquid flows out through the through hole 241, and the first guide surface 25 pressed against the surface of the top cover 2 can guide the flow of the liquid, so that the condition that the liquid pumped out of the outside flows back into the accommodating chamber 121 can be further reduced by the arrangement of the first guide surface 25.

Referring to fig. 5, the tapping piston 5 is provided with a second guiding surface 52 for tapping liquid on the side end surface facing away from the piston member 41. In the present embodiment, the second guide surface 52 is provided so as to gradually decrease in a direction away from the through hole 241. When the liquid is pressed out by the piston member 41, the liquid flows out through the through hole 241, and the second guide surface 52 on the end of the liquid outlet piston 5 can guide the flow of the liquid, so that the condition that the liquid pumped out from the outside flows back into the accommodating chamber 121 can be further reduced by the arrangement of the second guide surface 52.

Referring to fig. 5, the tapping piston 5 is provided with a sealing collar 53 in sealing abutment with the rim of the through hole 241 at the end of the guiding cone 51 remote from the piston member 41. The connection manner between the sealing convex ring 53 and the liquid outlet piston 5 can be various, and in this embodiment, the sealing convex ring 53 and the liquid outlet piston 5 are integrally injection molded. When the user releases the pressing top cover 2, the piston member 41 loses power and slides downwards to drive the liquid outlet piston 5 to slide downwards, so that the sealing convex ring 53 at the end part of the liquid outlet piston 5, which is away from the piston member 41, seals the gap between the through hole 241 and the liquid outlet piston 5 relatively quickly, thereby reducing the backflow of liquid, which is contacted with the user and presses the surface of the top cover 2, into the accommodating chamber 121 through the through hole 241, and reducing the occurrence of the condition that the liquid exposed to the outside flows back into the accommodating chamber 121 to pollute the lower liquid, and improving the purity of the liquid in the accommodating chamber 121.

Referring to fig. 5, the side of the sealing cover 3 facing the pressing top cover 2 is provided with a partition protrusion 31 abutting against the top side of the pressing cover. The pressing top cover 2 has a snap ring groove 26 provided on the periphery of the through hole 241 for the end of the partition protrusion 31 to be snapped in. In the present embodiment, the partition boss 31 is injection molded integrally with the seal cover 3. When the sealing cover 3 is covered, the sealing cover 3 is sealed and clamped into the clamping ring groove 26 on the pressing top cover 2 towards the blocking convex part 31 on one side of the pressing top cover 2, so that the through hole 241 is further sealed by the matching of the blocking convex part 31 and the clamping ring groove 26, and the sealing performance of the springless full-plastic pressing type cream bottle can be further improved.

Referring to fig. 2, a limit protrusion 54 slidably abutting against the end of the conducting ring 24 is provided at one end of the liquid outlet piston 5 facing the piston member 41. In this embodiment, the limiting protrusion 54 is configured as an annular plate, and the annular plate is connected with the liquid outlet piston 5 through a connecting rod, and a gap for flowing through liquid is formed on the annular plate, so that interference of the limiting protrusion 54 on flowing through of the liquid can be reduced. When the liquid outlet piston 5 slides through the sliding drive of the piston member 41, when the liquid in the accommodating chamber 121 is more, the piston member 41 needs to slide upwards for a larger distance to pump the liquid, and when the piston member 41 slides upwards, the limit protrusion 54 of the liquid outlet piston 5 abuts against the end of the conducting ring 24, so that the sliding of the liquid outlet piston 5 can be limited, and the situation that the liquid outlet piston 5 slides out of the conducting hole 241 under the driving of the piston member 41 can be reduced. And the outer diameter of the limiting convex part 54 is smaller than that of the conducting ring 24, so that when the piston member 41 slides upwards to the upper limit position, the limiting convex part 54 is reduced to have an interference effect on the upward movement of the piston member 41, and the piston member 41 can pump the liquid in the accommodating chamber 121 more completely.

Referring to fig. 2, the connecting shaft 6 includes at least two hard tubes 61 and a flexible tube 62 for connecting the two hard tubes 61, and one hard tube 61 may be inserted into the other hard tube 61. In this embodiment, the connecting shaft 6 includes three hard tubes 61 and the three hard tubes 61 are connected by a flexible tube 62, the flexible tube 62 is made of rubber, and the bottom hard tube 61 is inserted into the middle hard tube 61 along with the rising of the piston 41, and the middle hard tube 61 is inserted into the upper hard tube 61, so as to be compressed in a one-to-one manner. When the limit protrusion 54 of the liquid outlet piston 5 abuts against the end of the conducting ring 24, the piston member 41 is connected with the liquid outlet piston 5 through a connecting shaft 6, so that when the liquid outlet piston 5 stops sliding upwards, the upward sliding of the piston member 41 is easy to influence, the connecting shaft 6 is provided with at least two hard pipe bodies 61 and a hose body 62 for connecting the two hard pipe bodies 61, when the liquid outlet piston 5 stops sliding upwards, the hard pipe body 61 slides upwards through the other hard pipe body 61 under the action of the hose body 62, the piston member 41 can slide upwards continuously, and the situation that the liquid outlet piston 5 influences the sliding of the piston member 41 can be reduced.

Referring to fig. 6, a receiving groove 55 for the connecting shaft 6 to compress and retract is formed in the side of the liquid outlet piston 5 facing the piston member 41. The piston member 41 is provided with a mounting groove 412 for mounting the end of the hard tube 61 on the side facing the tapping piston 5. When the piston member 41 slides upwards to the upper limit position, the top side of the upper piston 41 abuts against the bottom side of the pressing top cover 2, so that the accommodating groove 55 of the liquid outlet piston 5 abuts against the mounting groove 412 of the piston member 41 to form a space for the conduction ring 24, the limit protrusion 54 and the connecting shaft 6 which are retracted to be clamped in, and therefore, the interference effect of the conduction ring 24, the limit protrusion 54 and the connecting shaft 6 on the upward movement of the piston member 41 can be reduced.

Referring to fig. 1 and 2, in the present embodiment, since the inner housing 12 is sleeved in the outer housing 11, and the inner housing 12 and the outer housing 11 are both cylindrical, the inner housing 12 is rotatably disposed in the outer housing 11, a rotation locking member is disposed between the inner housing 12 and the outer housing 11, when the inner housing 12 is rotated rightward, the inner housing 12 is in an unlocked state and can be pressed downward, and when the inner housing 12 is rotated leftward, the inner housing 12 is in a locked state, thereby improving the stability of the cream bottle in an unused state. Since the rotation locking member is not an important invention point of the present application, it is not described in detail herein.

The implementation principle of the spring-free all-plastic push type cream bottle provided by the embodiment of the application is as follows:

when the springless full-plastic push type cream bottle is used, liquid such as emulsion, cream and the like is contained in the containing cavity 121 of the inner shell 12, a user presses the top cover 2 to push the inner shell 12 downwards, so that the soft pump 42 at the bottom side of the inner shell 12 is extruded, air flowing in the soft pump 42 through the first one-way valve 43 flows into the inner shell 12 through the second one-way valve 44, the piston piece 41 in the inner shell 12 is pushed upwards through air pressure, the liquid outlet piston 5 is driven to slide upwards, the liquid outlet channel 23 is opened, and meanwhile, the piston piece 41 presses the liquid upwards, so that the liquid in the containing cavity 121 can be pumped out; when the user releases the pressing top cover 2, the soft pump 42 returns to its original state according to its own form, so that the piston member 41 loses the gas pressure effect, and slides downwards according to the gravity, thereby driving the liquid outlet piston 5 to slide downwards, so as to close the liquid outlet channel 23, and the liquid remaining in the liquid outlet channel 23 due to the relatively viscous liquid outlet piston 5 can be reduced.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The spring-free full-plastic push type cream bottle is characterized by comprising a bottle body (1), a push top cover (2) arranged above the bottle body (1) and a pump body assembly (4) arranged in the bottle body (1), wherein the bottle body (1) comprises an outer shell (11) and an inner shell (12) slidably arranged in the outer shell (11), an installation cavity (111) for slidably installing the inner shell (12) is arranged in the outer shell (11), a containing cavity (121) for containing liquid is arranged in the inner shell (12), and the push top cover (2) is arranged at the top of the inner shell (12); the pump body assembly (4) comprises a piston member (41) arranged in the accommodating cavity (121) in a sliding manner, a soft pump (42) arranged in the mounting cavity (111) and abutted against the bottom side of the inner shell (12) for driving the piston member (41) to slide, a first one-way valve (43) arranged at the bottom side of the soft pump (42) for allowing external air to flow into the soft pump (42), and a second one-way valve (44) arranged at the bottom side of the inner shell (12) for allowing air in the soft pump (42) to flow into the inner shell (12); the liquid outlet device is characterized in that a liquid outlet channel (23) for liquid to flow out is arranged on the pressing top cover (2), the pressing top cover (2) slides in the liquid outlet channel (23) and is provided with a liquid outlet piston (5) for opening and closing the liquid outlet channel (23), the liquid outlet piston (5) is connected with the piston piece (41) through a connecting shaft (6), and the piston piece (41) drives the liquid outlet piston (5) to slide.

2. The springless full-plastic push type cream bottle as claimed in claim 1, wherein a conducting ring body (24) is arranged on one side of the push top cover (2) facing the piston member (41), a conducting hole (241) penetrating through two ends of the conducting ring body (24) is formed in the conducting ring body (24), the conducting hole (241) is formed into the liquid outlet channel (23), and a limit convex part (54) in sliding abutting connection with the end part of the conducting ring body (24) is arranged on one end of the liquid outlet piston (5) facing the piston member (41).

3. A springless full plastic squeeze cream bottle as defined in claim 1, wherein said connecting shaft (6) comprises at least two rigid tubes (61) and a flexible tube (62) for connecting two of said rigid tubes (61), one of said rigid tubes (61) being insertable into the other of said rigid tubes (61).

4. A springless full-plastic push type cream bottle as claimed in claim 2, characterized in that the conducting ring body (24) is provided with a liquid outlet guide part (242) at one end facing away from the piston member (41), and the liquid outlet piston (5) is provided with a guide cone part (51) adapted to the liquid outlet guide part (242) at one end facing away from the piston member (41).

5. A springless full plastic push type cream bottle as defined in claim 2, further comprising a sealing cover (3) detachably mounted on the top side of said inner housing (12) and covering the upper side of said push top cover (2).

6. The springless full plastic push type cream bottle of claim 4, wherein said liquid outlet piston (5) is provided with a sealing collar (53) in sealing abutment with the edge of said through hole (241) at the end of said guiding cone (51) remote from said piston member (41).

7. A springless, all-plastic, push-type cream bottle as claimed in claim 2, characterized in that the push cap (2) is provided with a first guide surface (25) for the outflow of liquid at the edge of the side of the through hole (241) facing away from the piston member (41).

8. A springless, all-plastic, push-type cream bottle as claimed in claim 1, characterized in that the tapping piston (5) is provided with a second guide surface (52) for tapping liquid on the side face facing away from the piston member (41).

9. The springless full plastic push type cream bottle as set forth in claim 5, wherein a blocking protrusion (31) abutting against the top side of the push cap (2) is provided on one side of the push cap (3) facing the push cap (2), and a clamping ring groove (26) for clamping the end of the blocking protrusion (31) is provided on the periphery of the through hole (241) of the push cap (2).

10. A springless full plastic push type cream bottle as claimed in claim 2, wherein a liquid pressing groove (411) for the conductive ring body (24) to be clamped in is formed on one side of the piston member (41) facing the push top cover (2).