Mechanical self-closing pump head structure

Abstract

The utility model relates to a mechanical self-closing pump head structure which comprises a pressing cap internally provided with a first assembly space, one side of the pressing cap is provided with a through hole communicated with the first assembly space, a nozzle is arranged in the first assembly space of the pressing cap, the end of the first side of the nozzle is exposed out of the through hole in one side of the pressing cap, and a liquid outlet channel is arranged in the nozzle. The nozzle is provided with a liquid inlet communicated with the liquid outlet channel, a liquid outlet communicated with the liquid outlet channel is formed in the end, exposed out of the penetrating hole, of the nozzle, and is characterized in that a plunger capable of sealing the liquid outlet is movably arranged in the liquid outlet channel of the nozzle, and a driving mechanism connected with the plunger and used for driving the plunger to move is further arranged in the pressing cap. The plunger can always keep the trend of closing the liquid outlet under the driving mechanism, and can also be driven by the driving mechanism to open the liquid outlet under the pressing effect of external force on the pressing cap. Compared with the prior art, the utility model has the advantage that the plunger can seal the liquid outlet when not in use.

Description

Technical Field

[0001] The utility model relates to a mechanical self-closing pump head structure. Background Art

[0002] As people's living standards improve, their demand for cosmetics is also increasing, and a wide variety of cosmetics with different packaging have appeared on the market. In order to facilitate the removal of cosmetics from lotion bottles, the mouth of existing lotion bottles is mostly equipped with a lotion pump, which generally includes a pump core and a pump head connected to the pump core. The pump core generally includes a pump body, a piston seat, a piston rod, a connecting seat, a lotion conduit and an elastic reset member, wherein the piston seat and the piston rod are arranged inside the pump body, and the connecting seat is sealed and installed on the upper end of the pump body; the lower end of the lotion conduit extends into the pump body and cooperates with the piston seat and the piston rod, the upper end of the lotion conduit extends upward from the pump body, and an lotion channel is arranged inside the lotion conduit, and the elastic reset member is arranged outside the pump body and sleeved on the lotion conduit, the lower end of the elastic reset member abuts against the connecting seat, and the upper end of the elastic reset member abuts against the lotion conduit. For details, please refer to the Chinese patent with announcement number CN212830199U (patent number ZL202020714423.0). The pump head generally includes a push cap, in which a liquid outlet channel is provided. The push cap is connected to the top of the pump core, and the liquid outlet channel in the push cap is connected to the liquid outlet of the lotion conduit. However, in the existing pump head, the liquid outlet channel in the push cap is directly connected to the outside, and the liquid outlet cannot be sealed when the push cap is not in use, so that air is easily in contact with the lotion to cause deterioration, and adverse reactions are easily generated after use. Therefore, the pump head structure of the existing lotion pump needs to be further improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a mechanical self-closing pump head structure with a liquid outlet that can be automatically closed by pressing a cap when not in use, in view of the above-mentioned prior art.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a mechanical self-closing pump head structure, including a push cap with a first assembly space provided therein, a through hole communicated with the first assembly space provided on one side of the push cap, a nozzle provided in the first assembly space of the push cap, a first side end of the nozzle exposed from the through hole on one side of the push cap, a liquid outlet channel provided inside the nozzle, a liquid inlet communicated with the liquid outlet channel provided on the nozzle, a liquid outlet communicated with the liquid outlet channel provided at the end of the nozzle exposed from the through hole, characterized in that: a plunger capable of closing the liquid outlet is movably provided in the liquid outlet channel of the nozzle, a driving mechanism connected to the plunger for driving the plunger to move is also provided in the push cap, the plunger can always maintain a tendency to close the liquid outlet under the driving mechanism, and can also drive the plunger to open the liquid outlet through the driving mechanism when the push cap is pressed by an external force.

[0005] As an improvement, the first assembly space is horizontally arranged inside the push cap, and a vertically arranged liquid guide tube connected to the first assembly space is also provided inside the push cap. A second assembly space located outside the first assembly space and the liquid guide tube is also formed inside the push cap. The end of the plunger passes through the first assembly space and is located in the second assembly space, and the driving mechanism is arranged in the second assembly space.

[0006] Further improved, the driving mechanism comprises:

[0007] A connecting seat is movably arranged in the second assembly space of the push cap, a connecting conduit is arranged in the middle of the connecting seat, and an upper end of the connecting conduit is inserted in the liquid guiding tube;

[0008] A balancing support member is fixedly connected in the second assembly space of the push cap;

[0009] The middle part of the rotating seesaw is rotatably connected to the balance support, the upper end of the rotating seesaw is connected to the end of the plunger located in the second assembly space, and the lower end of the rotating seesaw is against the connecting seat.

[0010] As a further improvement, the outer sleeve of the plunger is provided with a retaining ring, which is assembled in the liquid outlet channel of the nozzle, and a plunger return spring is also arranged in the liquid outlet channel of the nozzle, one end of the plunger return spring is against the retaining ring, and the other end of the plunger return spring is against the inner wall of the first assembly space of the push cap.

[0011] As a further improvement, a first U-shaped split arm is formed at the upper end of the rotating rocker, and the first U-shaped split arm is clamped and connected to the end of the plunger located in the second assembly space.

[0012] As a further improvement, a second U-shaped split arm which is arranged obliquely is formed at the lower end of the rotating seesaw, and the second U-shaped split arm is sleeved outside the conduit.

[0013] As a further improvement, a guide ring is provided in the first assembly space of the push cap, and the second side end of the nozzle is sleeved outside the guide ring.

[0014] As a further improvement, a positioning groove is formed on the outer wall of the connecting seat, and correspondingly, a positioning rib cooperating with the positioning groove is formed on the inner wall of the second assembly space of the push cap. When the connecting seat is assembled in the second assembly space of the push cap, the positioning rib is movably inserted in the positioning groove.

[0015] Compared with the prior art, the advantages of the utility model are: a plunger is arranged inside the nozzle of the present application, so that the liquid outlet can be closed when not in use, thereby preventing external air from entering the nozzle and contacting the emulsion to cause the emulsion to deteriorate, and through the arrangement of the driving mechanism, when the press cap is pressed by external force, the driving mechanism drives the plunger to open the liquid outlet, and when the pressure is released, the driving mechanism always maintains the tendency of closing the liquid outlet, so that the liquid outlet of the entire pump head has an automatic sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the pump head structure in an embodiment of the utility model.

[0017] Figure 2 It is a schematic cross-sectional view of the pump head structure in an embodiment of the utility model.

[0018] Figure 3 It is a three-dimensional exploded view of the pump head structure in the embodiment of the utility model.

[0019] Figure 4 This is a schematic cross-sectional view of a lotion pump using the pump head structure in an embodiment of the utility model. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] like Figures 1 to 3 The pump head structure of the lotion pump comprises a push cap 1, a nozzle 2, a plunger 3, a plunger return spring 4, a connecting seat 5, a balancing support 6 and a rotating rocker 7, wherein the upper side of the inner side of the push cap 1 is provided with a first assembly space 12 arranged horizontally, the side wall of the upper side of the push cap 1 is provided with a through hole 11 connected to the first assembly space 12, the nozzle 2 is fixedly arranged in the first assembly space 12 of the push cap 1, the first side end of the nozzle 2 is exposed from the through hole 11 on one side of the push cap 1, a liquid outlet channel 23 is provided inside the nozzle, and a liquid outlet channel 23 is provided on the nozzle 3, a liquid inlet 22 connected to the nozzle 2 is provided at the first end of the nozzle exposed from the perforation with a liquid outlet 21 connected to the liquid outlet channel 23, the plunger 3 is movably arranged in the liquid outlet channel 23 of the nozzle 2 and can close the liquid outlet 21, the plunger return spring 4, the connecting seat 5, the balance support 6 and the rotating rocker 7 together constitute a driving mechanism, the driving mechanism is connected to the plunger 3, the plunger 3 can always keep the tendency of closing the liquid outlet 21 under the driving mechanism, and can also drive the plunger 3 to open the liquid outlet 21 through the driving mechanism when the push cap 1 is pressed by an external force.

[0022] In this embodiment, a vertically arranged liquid guide tube 14 communicating with the first assembly space 12 is also provided inside the push cap 1. A second assembly space 13 located outside the first assembly space 12 and the liquid guide tube 14 is also formed inside the push cap 1. The end of the plunger 3 passes through the first assembly space 12 and is located in the second assembly space 13. A retaining ring 31 is sleeved on the outside of the plunger 3. The retaining ring 31 is assembled in the liquid outlet channel 23 of the nozzle 2. The plunger return spring 4 is arranged in the liquid outlet channel 23 of the nozzle 2. One end of the plunger return spring 4 abuts against the retaining ring 31, and the other end of the plunger return spring 4 abuts against the inner wall of the first assembly space of the push cap. A guide ring 15 is provided in the first assembly space 12 of the push cap 1, and the second side end of the nozzle 2 is sleeved outside the guide ring 15.

[0023] The connecting seat 5 is movably arranged in the second assembly space 13 of the pressing cap 1, and a connecting conduit 51 is arranged in the middle of the connecting seat 5, and the upper end of the connecting conduit 51 is inserted in the liquid guiding tube 14; the balancing support 6 is fixedly connected in the second assembly space 13 of the pressing cap 1, and is sleeved outside the liquid guiding tube 14; the middle part of the rotating seesaw 7 is rotatably connected to the balancing support 6, and a first U-shaped split fork arm is formed at the upper end of the rotating seesaw 7, and the first U-shaped split fork arm is clamped and connected with the second side end of the plunger located in the second assembly space, and a second U-shaped split fork arm is formed at the lower end of the rotating seesaw 7, which is inclined, and the second U-shaped split fork arm is sleeved outside the conduit 14 and abuts against the upper side end surface of the connecting seat 5. A positioning groove 52 is formed on the outer wall of the connecting seat 5, and correspondingly, a positioning convex rib 16 cooperating with the positioning groove is formed on the inner wall of the second assembly space of the pressing cap 1, and when the connecting seat 5 is assembled in the second assembly space of the pressing cap, the positioning convex rib 16 is movably inserted in the positioning groove 52.

[0024] Due to the elastic restoring force of the plunger restoring spring 4, the plunger 3 always has a tendency to keep the liquid outlet 21 closed, that is, the first side end of the plunger 3 will be sealed against the liquid outlet 21. When the pressing cap is pressed by an external force, the pressing cap moves downward, and the connecting seat 5 will also move downward synchronously at the same time. However, since the connecting seat 5 is connected to the pump core of the lotion pump, the descending distance of the connecting seat 5 will be affected by the pump core 8, so the descending distance of the connecting seat 5 will be less than the descending distance of the pressing cap, see Figure 4 As shown, at this time, the upper end surface of the connecting seat 5 will apply an upward force to the lower end of the rotating seesaw 7, and the rotating seesaw 7 will rotate around the middle, the lower end of the rotating seesaw 7 will move upward, and the upper end of the rotating seesaw 7 will move away from the liquid outlet 21. The upper end of the rotating seesaw 7 will drive the plunger 3 to move away from the liquid outlet 21. At this time, the first side end of the plunger 3 is away from the liquid outlet 21, and the liquid outlet 21 is opened, and the emulsion can be sprayed out through the liquid outlet 21 of the nozzle. When the external force disappears, the plunger 3 is reset under the elastic reset force of the plunger reset spring 4, and the first end of the plunger 3 continues to be sealed against the liquid outlet 21.

Claims

1. A mechanical self-closing pump head structure, comprising a push cap with a first assembly space provided therein, a through hole communicating with the first assembly space provided on one side of the push cap, a nozzle provided in the first assembly space of the push cap, a first side end of the nozzle exposed from the through hole on one side of the push cap, a liquid outlet channel provided inside the nozzle, a liquid inlet communicated with the liquid outlet channel provided on the nozzle, and a liquid outlet communicated with the liquid outlet channel provided at the end of the nozzle exposed from the through hole, Features: A plunger is movably provided in the liquid outlet channel of the nozzle and can close the liquid outlet. A driving mechanism connected to the plunger and used to drive the plunger to move is also provided in the push cap. The plunger can always maintain a tendency to close the liquid outlet under the driving mechanism, and can also drive the plunger to open the liquid outlet through the driving mechanism when the push cap is pressed by an external force.

2. The mechanical self-closing pump head structure according to claim 1, Features: The first assembly space is horizontally arranged inside the push cap, and a vertically arranged liquid guide tube connected to the first assembly space is also provided inside the push cap. A second assembly space located outside the first assembly space and the liquid guide tube is also formed inside the push cap. The end of the plunger passes through the first assembly space and is located in the second assembly space, and the driving mechanism is arranged in the second assembly space.

3. The mechanical self-closing pump head structure according to claim 2, Features: The driving mechanism comprises: A connecting seat is movably arranged in the second assembly space of the push cap, a connecting conduit is arranged in the middle of the connecting seat, and an upper end of the connecting conduit is inserted in the liquid guiding tube; A balancing support member is fixedly connected in the second assembly space of the push cap; The middle part of the rotating seesaw is rotatably connected to the balance support, the upper end of the rotating seesaw is connected to the end of the plunger located in the second assembly space, and the lower end of the rotating seesaw is against the connecting seat.

4. The mechanical self-closing pump head structure according to claim 3, Features: The outer sleeve of the plunger is provided with a retaining ring, which is assembled in the liquid outlet channel of the nozzle. A plunger return spring is also arranged in the liquid outlet channel of the nozzle, one end of the plunger return spring is against the retaining ring, and the other end of the plunger return spring is against the inner wall of the first assembly space of the push cap.

5. The mechanical self-closing pump head structure according to claim 3, Features: A first U-shaped split fork arm is formed at the upper end of the rotating rocker, and the first U-shaped split fork arm is clamped and connected to the end of the plunger located in the second assembly space.

6. The mechanical self-closing pump head structure according to claim 3, Features: The lower end of the rotating seesaw is formed with a second U-shaped split fork arm which is arranged obliquely, and the second U-shaped split fork arm is sleeved outside the conduit.

7. The mechanical self-closing pump head structure according to claim 3, Features: The outer wall of the connecting seat is formed with a positioning groove, and correspondingly, the inner wall of the second assembly space of the push cap is formed with a positioning rib that cooperates with the positioning groove. When the connecting seat is assembled in the second assembly space of the push cap, the positioning rib is movably inserted in the positioning groove.

8. The mechanical self-closing pump head structure according to claim 1, Features: A guide ring is arranged in the first assembly space of the push cap, and the second side end of the nozzle is sleeved outside the guide ring.

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