Cosmetic bottle pump head with back suction function

Abstract

The utility model discloses a cosmetic bottle pump head with a back suction function, which comprises an outer cover (1), a pump assembly (2) and a button (3), the pump assembly (2) comprises a pump body (4) arranged in the outer cover (1), an inner ring sleeve (5) is arranged in the pump body (4), a movable elastic pump rod (6) is arranged in the inner ring sleeve (5), and the button (3) is embedded at the upper end of the elastic pump rod (6); a linkage part (7) is arranged at the tail end of the elastic pump rod (6), and a main piston piece (8) and an auxiliary piston piece (9) which are connected with each other are arranged in the pump body (4); and the upper end of the piston main piece (8) extends into the pump body (4). Liquid in the spray head can be sucked back through the arranged back-suction cavity, emulsion dripping is reduced, the structure is simple, practicability is high, and sanitation and safety are achieved.

Description

Technical Field

[0001] The utility model relates to the field of cosmetic bottle components, in particular to a cosmetic bottle pump head with a back-suction function. Background Art

[0002] Cosmetic containers with nozzles are widely used because they are convenient for taking liquid, paste or gel materials. When using traditional cosmetic containers, there is often a problem of excess material flowing out of the nozzle outlet. In order to improve this problem, there is a kind of anti-drip spray head assembly, such as the Chinese utility model patent with announcement number CN209788890U, which discloses a button, a nozzle and a pump assembly. The button has a button body and a connector built in the button body, the nozzle is installed in the button body, and the pump assembly has an outer cover, an inner cover, a pump body, a pump body seat, a pressure rod and a linkage rod. A circle of movable annular grooves are concavely provided on the inner side wall of the upper shaft end of the pressure rod, a step portion is also formed integrally on the inner side wall of the pressure rod, and a circle of linkage edges are integrally provided on the outer side wall of the connector, and the linkage edges are movably embedded in the movable annular grooves; an elastic member is also provided between the pressure rod and the connector, and the lower part of the elastic member is elastically arranged between the bottom end of the connector and the step portion. When the pump assembly is reset, the elastic part increases the distance between the connector and the pressure rod, so that the remaining material in the nozzle outlet can be sucked back under the action of vacuum siphon. However, the elastic effect of the elastic part will decrease after a period of use, and the effect of the back-sucking will also decrease. Secondly, the emulsion contacts the elastic part, and the emulsion may corrode the elastic part and contaminate the emulsion. Utility Model Content

[0003] The purpose of the utility model is to provide a cosmetic bottle pump head with a back-suction function. The utility model can realize the back-suction of liquid in the spray head through the back-suction cavity, reduce the dripping of lotion, and has a simple structure, strong practicality, and is hygienic and safe.

[0004] The technical solution of the utility model: a cosmetic bottle pump head with a back-suction function comprises an outer cover, a pump assembly and a button, the pump assembly comprises a pump body arranged in the outer cover, an inner ring sleeve is arranged in the pump body, a movable elastic pump rod is arranged in the inner ring sleeve, and the button is embedded in the upper end of the elastic pump rod; the end of the elastic pump rod has a linkage part, and a piston main part and a piston auxiliary part connected to each other are arranged in the pump body; the upper end of the piston main part extends into the pump body, and the outer ring groove of the linkage part and the upper end of the piston main part form a back-suction chamber, and the back-suction chamber is connected with the internal channel of the pump body through the through hole; the linkage part passes through the piston main part and fits with the piston auxiliary part.

[0005] In the above-mentioned cosmetic bottle pump head with back-suction function, an inner ring portion is provided on the inner side of the outer cover, an inner groove for embedding the pump body is provided at the lower end of the inner ring portion, and a sealing ring is provided on the bottom side of the upper ring portion of the pump body.

[0006] In the aforementioned cosmetic bottle pump head with a back-suction function, a stepped opening is provided at the upper end of the inner ring portion, and a stepped portion matching the stepped opening is provided on the outer side of the inner ring sleeve.

[0007] In the aforementioned cosmetic bottle pump head with a back-suction function, the lower end of the piston main component has a ring end, and the upper end of the piston auxiliary component has a ring groove that fits with the ring end.

[0008] In the aforementioned cosmetic bottle pump head with back-suction function, a pump valve is provided at the tail end of the pump body.

[0009] In the aforementioned cosmetic bottle pump head with back-suction function, the elastic pump rod includes a rod body and a spring sleeved on the outside of the rod body, the upper end of the spring abuts against the top end of the rod body, and the lower end of the spring abuts against the upper end of the inner ring sleeve.

[0010] In the aforementioned cosmetic bottle pump head with a back-suction function, the interior of the button is provided with a channel tube, and the upper end of the rod body is provided with an end groove that fits with the button.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. In the utility model, when the button is pressed, the elastic pump rod moves downward, and a gap is generated between the linkage part at the end of the elastic pump rod and the piston sub-component. At this time, the chamber of the back-suction chamber is smaller, and the emulsion enters the elastic pump rod from the pump body and finally flows out from the liquid outlet of the button. When the elastic pump rod is reset, the back-suction chamber formed by the annular groove around the upper end of the piston main component and the linkage part increases, generating suction, and the residual material at the button outlet will return to the elastic pump rod, reducing the dripping of the emulsion. Compared with increasing the volume of the back-suction chamber by arranging an elastic part, the utility model is achieved by improving the structure, and has a simple structure, strong applicability, and is hygienic and safe.

[0013] 2. By setting a sealing ring, the gap between the pump body and the inside of the outer cover can be sealed to prevent the emulsion from flowing out through the connection gap.

[0014] 3. The piston main part and the piston auxiliary part are connected through a mutually engaging structure, and the connection method is simple and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 is a schematic diagram of the suction chamber;

[0018] Figure 4 is a schematic diagram of the ring groove;

[0019] Figure 5 This is a schematic diagram of the stair entrance.

[0020] Explanation of the marks in the accompanying drawings: 1. Outer cover; 2. Pump assembly; 3. Button; 4. Pump body; 5. Inner ring sleeve; 6. Elastic pump rod; 7. Linkage part; 8. Piston main part; 9. Piston auxiliary part; 10. Suction chamber; 11. Inner ring part; 12. Inner groove; 13. Sealing ring; 14. Step mouth; 15. Step part; 16. Ring end; 17. Ring groove; 18. Pump valve; 19. Rod body; 20. Spring; 21. Channel tube; 22. End groove. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] Embodiment: A cosmetic bottle pump head with a back-sucking function comprises an outer cover 1, a pump assembly 2 and a button 3, as shown in the attached Figure 1 and 2 As shown, the pump assembly 2 includes a pump body 4 disposed in an outer cover 1, an inner ring sleeve 5 is installed in the pump body 4, the upper end of the inner ring portion 11 has a stepped opening 14, and the outer side of the inner ring sleeve 5 has a stepped portion 15 that fits with the stepped opening 14, as shown in the attached Figure 5 As shown, the stable installation of the inner ring sleeve is achieved through a stepped structure, a movable elastic pump rod 6 is installed in the inner ring sleeve 5, the button 3 is embedded in the upper end of the elastic pump rod 6, the elastic pump rod 6 includes a rod body 19 and a spring 20 sleeved on the outside of the rod body 19, the upper end of the spring 20 is in contact with the top of the rod body 19, and the lower end of the spring 20 is in contact with the upper end of the inner ring sleeve 5, and the spring can be stably sleeved on the rod body, the button 3 has a channel tube 21 inside, and the upper end of the rod body 19 has an end groove 22 that fits with the button 3, so as to achieve a stable connection between the button and the rod body; the end of the elastic pump rod 6 has a linkage part 7, and the pump body 4 is installed with a piston main part 8 and a piston auxiliary part 9 that are connected to each other; the upper end of the piston main part 8 extends into the pump body 4, and the outer ring groove of the linkage part 7 and the upper end of the piston main part 8 form a suction chamber 10, as shown in the attached Figure 3 As shown, the suction chamber 10 is connected with the internal channel of the pump body 4 through a through hole; the linkage part 7 passes through the piston main part 8 and fits with the piston auxiliary part 9, the tail end of the linkage part is a conical structure, and the inner end surface of the piston auxiliary part is also an inner conical surface, and the linkage part and the piston auxiliary part fit each other.

[0023] The inner side of the outer cover 1 has an inner ring portion 11, and the lower end of the inner ring portion 11 is provided with an inner groove 12 for embedding the pump body 4. Figure 4As shown, a sealing ring 13 is provided at the bottom side of the upper ring portion of the pump body 4. By providing the sealing ring, the gap between the pump body and the inside of the outer cover can be sealed to prevent the emulsion from flowing out through the gap of the connection. The lower end of the piston main component 8 has a ring end 16, and the upper end of the piston auxiliary component 9 has a ring groove 17 that fits with the ring end 16. The piston main component and the piston auxiliary component are connected by a mutually engaging structure, and the connection method is simple and the connection is stable. The tail end of the pump body 4 is provided with a pump valve 18, and the pump valve is in airtight contact with the support ring platform in the pump body.

[0024] The working principle of the utility model is as follows: when the button is pressed, the elastic pump rod moves downward, and a gap is generated between the linkage part at the end of the elastic pump rod and the piston sub-part. At this time, the chamber of the back-suction chamber is smaller, and the emulsion enters the elastic pump rod from the pump body and finally flows out from the liquid outlet of the button. When the elastic pump rod is reset, the back-suction chamber formed by the annular groove around the upper end of the piston main part and the linkage part increases, generating suction, and the residual material at the button outlet will return to the elastic pump rod, reducing the dripping of the emulsion. Compared with increasing the volume of the back-suction chamber by arranging an elastic part, the utility model is achieved by improving the structure, and has a simple structure, strong applicability, and is hygienic and safe.

Claims

1. A cosmetic bottle pump head with a back-suction function, comprising an outer cover (1), a pump assembly (2) and a button (3), characterized in that: The pump assembly (2) comprises a pump body (4) arranged in an outer cover (1), an inner ring sleeve (5) being arranged in the pump body (4), a movable elastic pump rod (6) being arranged in the inner ring sleeve (5), and the button (3) being embedded in the upper end of the elastic pump rod (6); a linkage portion (7) being provided at the end of the elastic pump rod (6), and a piston main component (8) and a piston auxiliary component (9) being connected to each other being provided in the pump body (4); the upper end of the piston main component (8) extending into the pump body (4), the outer ring groove of the linkage portion (7) and the upper end of the piston main component (8) forming a suction chamber (10), and the suction chamber (10) being connected to the internal channel of the pump body (4) via a through hole; the linkage portion (7) passing through the piston main component (8) and fitting with the piston auxiliary component (9).

2. The cosmetic bottle pump head with back-suction function according to claim 1, characterized in that: An inner ring portion (11) is provided on the inner side of the outer cover (1), an inner groove (12) for embedding the pump body (4) is provided at the lower end of the inner ring portion (11), and a sealing ring (13) is provided on the bottom side of the upper ring portion of the pump body (4).

3. The cosmetic bottle pump head with back-suction function according to claim 2, characterized in that: The upper end of the inner ring portion (11) is provided with a stepped opening (14), and the outer side of the inner ring sleeve (5) has a stepped portion (15) that fits with the stepped opening (14).

4. The cosmetic bottle pump head with back-suction function according to claim 1, characterized in that: The lower end of the piston main component (8) is provided with a ring end portion (16), and the upper end of the piston auxiliary component (9) is provided with a ring groove (17) which matches with the ring end portion (16).

5. The cosmetic bottle pump head with back-suction function according to claim 1, characterized in that: A pump valve (18) is provided at the rear end of the pump body (4).

6. The cosmetic bottle pump head with back-suction function according to claim 1, characterized in that: The elastic pump rod (6) comprises a rod body (19) and a spring (20) sleeved on the outside of the rod body (19), the upper end of the spring (20) abuts against the top end of the rod body (19), and the lower end of the spring (20) abuts against the upper end of the inner ring sleeve (5).

7. The cosmetic bottle pump head with back-suction function according to claim 6, characterized in that: The button (3) has a channel tube (21) inside, and the upper end of the rod body (19) has an end groove (22) that fits with the button (3).

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