All-plastic pressing pump with safety rib plastic spring

Abstract

The invention discloses an all-plastic pressing pump with a safety rib plastic spring, which comprises a bottle locking cap provided with a pump body. The pump body is internally provided with a liquid storage cavity, a communication port communicated with the liquid storage cavity, a one-way valve capable of controlling the communication port to be opened to enable liquid to enter the liquid storage cavity, a pumping assembly capable of relatively sliding up and down, and a locking cover capable of preventing the pumping assembly from being separated from the pump body. The upper end of the pumping assembly is provided with a pressing head which can drive the pumping assembly to move downwards so that air pressure can be generated in the liquid storage cavity to extrude liquid in the liquid storage cavity to flow out. A plastic spring is arranged between the locking cover and the pressing head, can elastically press the pressing head to drive the pumping assembly to move upwards to reset so that negative pressure can be generated in the liquid storage cavity, the one-way valve can be opened to suck liquid into the liquid storage cavity, and the plastic spring is of an elastic opening annular thin-wall structure into which one end of the pressing head can be inserted. A safety rib is connected between the two ends of the opening of the plastic spring, and when the pressing head is pressed down to extrude the inner wall of the plastic spring, the plastic spring is opened to break the safety rib.

Description

Technical Field

[0001] The present invention relates to a fully plastic pressing pump with an insurance rib plastic spring.

Background Art

[0002] In the daily chemical field, as a commonly used opening and closing device for liquid product containers, the anti-theft function of the pressing pump has always been the focus of industry attention. Currently, the main anti-theft technologies for pressing pumps on the market are as disclosed in the Chinese patent with the publication number CN210823540U. By setting an easily tearable connecting member on the dental appliance, the dental appliance body is connected to the tearing ring through a matching structure of a convex block and a depression. When the pressing pump is illegally opened, the easily tearable connecting member breaks, and the tearing ring is separated from the dental appliance body, thus achieving the anti-theft effect of leaving a mark on opening. However, the defect is that it can only prevent the illegal disassembly of the dental appliance and the bottle mouth, and there is no anti-theft design for the pressing head part of the pressing pump, so there is a risk that the pressing head is opened in advance.

[0003] Then, in response to the need for anti-theft of the pressing head, some manufacturers have developed an anti-theft emulsion pump as disclosed in the Chinese patent with the publication number CN2670264Y. An insurance block connected to the pump cover is added on the nozzle side of the pressing head. When the pressing head rotates in the opening direction, the insurance block is toggled off by the nozzle, and consumers can judge whether the product has been opened by observing whether the insurance block exists. Although this solution makes up for the blank of anti-theft of the pressing head, it adds an additional insurance block part, resulting in an increase in production cost. Moreover, more importantly, the above existing pressing pumps all use a metal spring as a reset element, and it is difficult to recycle the metal spring and the plastic main body as a whole. When the product is recycled, the metal spring and the plastic parts need to be disassembled and separated, which does not meet the environmental protection requirements.

[0004] Therefore, the present invention is precisely produced based on the above deficiencies.

Summary of the Invention

[0005] The object of the present invention is to overcome the deficiencies of the prior art and provide a fully plastic pressing pump with an insurance rib plastic spring that can be used for anti-theft and supports overall recycling.

[0006] The present invention is realized through the following technical solutions:

[0007] A fully plastic pressing pump with a plastic spring having a safety rib, comprising a locking bottle cap 1 that can be fixed on a liquid storage bottle. A pump body 2 is provided on the locking bottle cap 1. A liquid storage cavity 3, a communication port 4 communicating with the liquid storage cavity 3, a one-way valve 5 that can control the opening of the communication port 4 to allow liquid to enter the liquid storage cavity 3, a pumping assembly 6 that can slide up and down relatively, and a locking cover 7 that can prevent the pumping assembly 6 from detaching from the pump body 2 are provided in the pump body 2. A pressing head 8 that can drive the pumping assembly 6 downward to generate air pressure in the liquid storage cavity 3 to squeeze the liquid in the liquid storage cavity 3 out is provided at the upper end of the pumping assembly 6. It is characterized in that: a plastic spring 9 that can elastically press the pressing head 8 to drive the pumping assembly 6 to move upward and reset to generate negative pressure in the liquid storage cavity 3 to open the one-way valve 5 and suck the liquid into the liquid storage cavity 3 is provided between the locking cover 7 and the pressing head 8. The plastic spring 9 is an elastic open annular thin-walled structure into which one end of the pressing head 8 can be inserted. A safety rib 91 is connected between the two ends of the opening of the plastic spring 9. When the pressing head 8 is pressed to squeeze the inner wall of the plastic spring 9, the plastic spring 9 expands and the safety rib 91 breaks.

[0008] For the fully plastic pressing pump with a plastic spring having a safety rib as described above, it is characterized in that: the two ends of the opening of the plastic spring 9 are staggered with each other to form an opening gap 92. The safety rib 91 is provided in the opening gap 92 and its two ends are respectively connected to the inner side surface and the outer side surface opposite to the inner side surface of the plastic spring 9.

[0009] For the fully plastic pressing pump with a plastic spring having a safety rib as described above, it is characterized in that: the safety rib 91 is provided at a place far away from the outlet of the opening gap 92, and the cross-sectional area of the safety rib 91 gradually becomes smaller in the extending direction from the inner side surface to the outer side surface of the plastic spring 9.

[0010] For the fully plastic pressing pump with a plastic spring having a safety rib as described above, it is characterized in that: the plastic spring 9 includes a plurality of continuously and alternately connected concave portions 93 and convex portions 94, and the concave portions 93 and the convex portions 94 are arc-shaped.

[0011] For the fully plastic pressing pump with a plastic spring having a safety rib as described above, it is characterized in that: an outwardly protruding reinforcing rib 95 is provided on the outer side surface of the plastic spring 9.

[0012] For the fully plastic pressing pump with a plastic spring having a safety rib as described above, it is characterized in that: the pumping assembly 6 includes a pump rod 61 whose upper end passes through the locking cover 7 and is inserted into the pressing head 8 and whose lower end extends into the liquid storage cavity 3, and a piston 62 that is sleeved on the pump rod 61 and can move relative to the pump rod 61 and is driven by the pump rod 61. A liquid outlet channel 611 communicating with the liquid outlet end of the pressing head 8 is provided in the pump rod 61. A liquid inlet 612 sealed by the piston 62 is provided at the lower end of the pump rod 61. When the pump rod 61 moves downward relative to the piston 62, the liquid inlet 612 is opened so that the liquid in the liquid storage cavity 3 can enter the liquid outlet channel 611.

[0013] The all-plastic pressing pump with safety rib plastic spring as described above is characterized in that the pump body 2, bottle lock cover 1, one-way valve 5, locking cover 7, pressing head 8, and pumping assembly 6 are all made of plastic injection molding.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. The present invention adopts a fully plastic spring structure design to completely abandon the traditional metal spring, avoid the problem of separating and recycling metal and plastic, reduce recycling costs, and meet environmental protection requirements; and through the safety rib structure on the plastic spring, when the pressing head is pressed for the first time, the safety rib breaks to form an anti-theft indicator mark. The overall structure is simple, and additional parts such as safety blocks are eliminated. Through the integrated design of the plastic spring and the safety rib, the strength and stability of the plastic spring are increased, the number of parts is reduced, and the production cost is reduced.

[0016] 2. In the present invention, the inner concave part and the outer convex part of the plastic spring are designed to be arc-shaped, combined with reinforcing ribs, which not only ensures elastic reset performance but also improves structural strength, ensuring long-term stability.

[0017] 3. In the present invention, the cross-sectional area of the safety rib gradually decreases in the direction extending from the inner side surface to the outer side surface, so that the safety rib close to the outer side surface can be accurately broken when subjected to force, and the safety rib is arranged at a place far away from the exit of the open gap to avoid the broken safety rib from getting stuck at the end of the plastic spring when the plastic spring retracts, thereby ensuring the smoothness of the press-reset cycle.

Brief Description of the Drawings

[0018] Figure 1 is a schematic diagram of the structure of the present invention when the pressing head is not pressed;

[0019] Figure 2 is a three-dimensional diagram of the plastic spring in the initial state;

[0020] Figure 3 is a top view of the plastic spring of the present invention;

[0021] Figure 4 is a schematic diagram of the structure of the present invention when the pressing head is pressed;

[0022] Figure 5 It is a three-dimensional image of a plastic spring in an expanded state. [Specific implementation method]

[0023] The present invention will be further described below in conjunction with the accompanying drawings:

[0024] like Figures 1 to 5As shown in the figure, a fully plastic pressing pump with a safety-reinforced plastic spring includes a lock cap 1 that can be fixed on a liquid container bottle. A pump body 2 is provided on the lock cap 1. Inside the pump body 2, there is a liquid storage cavity 3, a communication port 4 communicating with the liquid storage cavity 3, a one-way valve 5 that can control the opening of the communication port 4 to allow liquid to enter the liquid storage cavity 3, a pumping assembly 6 that can slide up and down relatively, and a locking cap 7 that can prevent the pumping assembly 6 from detaching from the pump body 2. At the upper end of the pumping assembly 6, there is a pressing head 8 that can drive the pumping assembly 6 downward to generate air pressure in the liquid storage cavity 3 to squeeze the liquid in the liquid storage cavity 3 out. Between the locking cap 7 and the pressing head 8, there is a plastic spring 9 that can elastically press the pressing head 8 to drive the pumping assembly 6 to move upward and reset, generating negative pressure in the liquid storage cavity 3 to open the one-way valve 5 and suck the liquid into the liquid storage cavity 3. The plastic spring 9 is an elastic open-ring thin-wall structure into which one end of the pressing head 8 can be inserted. A safety rib 91 is connected between the two open ends of the plastic spring 9. When the pressing head 8 is pressed down to squeeze the inner wall of the plastic spring 9, the plastic spring 9 expands and the safety rib 91 breaks. Specifically, the lock cap 1 is fixed on the bottle mouth of the liquid container bottle through a threaded or snap structure, and can cooperate with the tooth cap anti-theft design to achieve double protection. The communication port 4 at the bottom of the pump body 2 is communicated with the liquid in the bottle through a straw 10, and a one-way valve 5 is installed at the communication port 4, only allowing liquid to flow into the liquid storage cavity 3. The locking cap 7 is snap-fitted inside the pump body 2, and a central hole is provided in the middle for the upper end of the pump rod 61 to pass through and be inserted into the pressing head 8. The lower end of the plastic spring 9 abuts against the locking cap 7, and the upper end is sleeved on the outer side of the lower end of the pressing head 8. When the user first uses the pressing head 8, pressing down the pressing head 8 drives the pump rod 61 to move downward, and the liquid in the liquid storage cavity 3 is squeezed through the liquid inlet 612 into the liquid outlet channel 611 and discharged from the pressing head 8. At the same time, the pressing head 8 squeezes the inner wall of the plastic spring 9, causing the open ring piece to expand and the opening to enlarge, and the safety rib 91 breaks due to the force exceeding the strength threshold.

[0025] The present invention adopts a fully plastic spring structure design, completely abandoning the traditional metal spring, avoiding the problem of separating and recycling metal and plastic, reducing the recycling cost, and meeting the environmental protection requirements. Moreover, through the safety rib structure on the plastic spring, when the pressing head is pressed for the first time, the safety rib breaks, forming an anti-theft indication mark. The overall structure is simple, eliminating additional parts such as safety blocks. Through the integrated design of the plastic spring and the safety rib, the strength and stability of the plastic spring are increased, the number of parts is reduced, and the production cost is reduced.

[0026] As Figure 2 and Figure 3As shown, the two ends of the opening of the plastic spring 9 are staggered to form an opening gap 92, and the safety rib 91 is arranged in the opening gap 92 and its two ends are respectively connected to the inner side surface and the outer side surface opposite to the inner side surface of the plastic spring 9. The inner side surface of the plastic spring 9 is the side wall facing the center of the plastic spring 9, and the outer side surface of the plastic spring 9 is the other side wall away from the center of the plastic spring 9. The safety rib 91 spans the gap 92 and its two ends are respectively fixedly connected to the two side walls.

[0027] Furthermore, the safety rib 91 is arranged at a place far away from the exit of the opening gap 92, and the cross-sectional area of the safety rib 91 gradually decreases in the direction extending from the inner side to the outer side of the plastic spring 9. In the present invention, the cross-sectional area of the safety rib gradually decreases in the direction extending from the inner side to the outer side, so that the end of the safety rib close to the outer side is precisely broken when subjected to force, and the safety rib is arranged at a place far away from the exit of the opening gap, so as to avoid the broken safety rib from getting stuck at the end of the plastic spring when the plastic spring retracts, thereby ensuring the smoothness of the press-reset cycle.

[0028] In the present invention, the plastic spring 9 includes a plurality of continuously and alternately connected inner concave portions 93 and outer convex portions 94, and the inner concave portions 93 and the outer convex portions 94 are arc-shaped. The annular wall of the plastic spring 9 is composed of the continuous arc-shaped inner concave portions 93 and the outer convex portions 94 to form a wave structure, which effectively improves the resilience. When the pressing head 8 is pressed downward, the lower end of the pressing head 8 presses the inner convex surface of the inner concave portion 93 to open the plastic spring 9.

[0029] Specifically, the outer side surface of the plastic spring 9 is provided with a reinforcing rib 95 protruding outward, which improves the structural strength while ensuring the elastic reset performance, thereby ensuring long-term stability.

[0030] In the present invention, the pumping assembly 6 includes a pump rod 61 whose upper end passes through the locking cover 7 and is plugged into the pressing head 8 and whose lower end extends into the liquid storage chamber 3, a piston 62 which is sleeved on the pump rod 61 and can be moved relative to the pump rod 61 and driven by the pump rod 61, a liquid outlet channel 611 which is connected to the liquid outlet end of the pressing head 8 is provided in the pump rod 61, and a liquid inlet 612 sealed by the piston 62 is provided at the lower end of the pump rod 61. After the pump rod 61 moves downward relative to the piston 62, the liquid inlet 612 is opened so that the liquid in the liquid storage chamber 3 can enter the liquid outlet channel 611. When the pressing head 8 on the top is pressed, the pressing head 8 drives the pump rod 61 so that the pump rod 61 moves downward relative to the piston 62, and then the liquid inlet 612 opens. Then the pressing head 8 is continued to be pressed so that the pump rod 61 drives the piston 62 to move downward to generate air pressure, and the liquid in the liquid storage chamber 3 is sent to the liquid outlet end of the pressing head 8 through the liquid inlet 612 and the liquid outlet channel 611; when the pressing head 8 is pressed to pump the liquid out, the plastic spring 9 presses the pressing head 8 to drive the pump rod 61 and the piston 62 to move upward and reset, and a negative pressure is generated in the liquid storage chamber 3 to suck the liquid from the product bottle for the next user to use.

[0031] In the present invention, the pump body 2, the bottle cap lock 1, the one-way valve 5, the locking cap 7, the pressing head 8, and the pumping assembly 6 are all injection-molded from plastic, achieving a fully plastic structure design, enabling efficient recycling, and can be directly recycled without decomposition.

Claims

1. A fully plastic pressing pump with a safety ribbed plastic spring, comprising a locking bottle cap (1) that can be fixed on a liquid storage bottle, a pump body (2) is provided on the locking bottle cap (1), a liquid storage cavity (3), a communication port (4) communicating with the liquid storage cavity (3), a one-way valve (5) that can control the opening of the communication port (4) to allow liquid to enter the liquid storage cavity (3), a pumping assembly (6) that can slide up and down relatively, and a locking cover (7) that can prevent the pumping assembly (6) from detaching from the pump body (2) are provided in the pump body (2), a pressing head (8) that can drive the pumping assembly (6) downward to generate air pressure in the liquid storage cavity (3) to squeeze the liquid in the liquid storage cavity (3) out is provided at the upper end of the pumping assembly (6), and it is characterized in that: A plastic spring (9) is provided between the locking cover (7) and the pressing head (8). The plastic spring (9) can elastically press the pressing head (8) to drive the pumping assembly (6) to move upward and reset, generating a negative pressure in the liquid storage cavity (3) to open the one-way valve (5) and suck the liquid into the liquid storage cavity (3). The plastic spring (9) is an elastic open-ring thin-wall structure into which one end of the pressing head (8) can be inserted. A safety rib (91) is connected between the two ends of the opening of the plastic spring (9). When the pressing head (8) is pressed to squeeze the inner wall of the plastic spring (9), the plastic spring (9) expands to break the safety rib (91).

2. The all-plastic pressing pump with a plastic spring having safety ribs according to claim 1, wherein: The two ends of the opening of the plastic spring (9) are staggered with each other to form an opening gap (92). The safety rib (91) is arranged in the opening gap (92), and the two ends are respectively connected to the inner side surface and the outer side surface opposite to the inner side surface of the plastic spring (9).

3. The all-plastic pressing pump with a plastic spring having a safety rib according to claim 2, wherein: The safety rib (91) is arranged at a position far from the outlet of the opening gap (92), and the cross-sectional area of the safety rib (91) gradually decreases in the extending direction from the inner side surface to the outer side surface of the plastic spring (9).

4. The all-plastic pressing pump with a plastic spring having safety ribs according to claim 1, characterized in that: The plastic spring (9) includes a plurality of continuously and alternately connected concave portions (93) and convex portions (94), and the concave portions (93) and the convex portions (94) are arc-shaped.

5. The all-plastic pressing pump with a plastic spring with safety ribs according to claim 1, characterized in that: The outer side surface of the plastic spring (9) is provided with outwardly protruding reinforcing ribs (95).

6. The all-plastic pressing pump with a plastic spring with a safety rib according to claim 1, characterized in that: The pumping assembly (6) includes a pump rod (61) whose upper end passes through the locking cover (7) and is inserted into the pressing head (8), and whose lower end extends into the liquid storage cavity (3), and a piston (62) sleeved on the pump rod (61) and capable of moving relative to the pump rod (61) and driven by the pump rod (61). An outlet channel (611) communicating with the liquid outlet end of the pressing head (8) is arranged in the pump rod (61). The lower end of the pump rod (61) is provided with an inlet (612) sealed by the piston (62). When the pump rod (61) moves downward relative to the piston (62), the inlet (612) is opened so that the liquid in the liquid storage cavity (3) can enter the outlet channel (611).

7. The all-plastic pressing pump with a plastic spring having a safety rib according to claim 1, wherein: The pump body (2), the lock bottle cap (1), the one-way valve (5), the locking cover (7), the pressing head (8), and the pumping assembly (6) are all injection molded from plastic.

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