Pump body of extrusion bottle

Abstract

The extrusion bottle pump body comprises a pump core assembly, a shoulder sleeve and a pressing cap, the pump core assembly comprises a connecting cover, a lock cover, an upper pump rod, a discharging rod and a piston, a main body is arranged in the center of the connecting cover, the lock cover is connected to one end of the main body, the upper pump rod is connected into the lock cover, and the piston is arranged on the shoulder sleeve. The discharging rod is connected to the upper pump rod, and the lower end part of the discharging rod is located in the main body; the piston is connected to the discharging rod and located in the main body; the pump core assembly further comprises a first elastic piece and a second elastic piece, the first elastic piece and the second elastic piece are arranged on the lock cover in a sleeving mode, one end of the first elastic piece and one end of the second elastic piece abut against the lock cover, and the other end of the first elastic piece and the other end of the second elastic piece abut against the pump rod abutting against the lock cover. The double elastic pieces are arranged in the pump body, the double elastic pieces can release explosive force instantly in the pressing and resetting process, the pumping speed is increased, the pumping amount is increased, and the better pumping effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pump bodies, and particularly relates to a squeezing bottle pump body. Background Art

[0002] A pump body is a pumping mechanism that can pump out the contents of a squeezing bottle for consumers to use.

[0003] Most of the existing pump bodies are internally provided with springs. Some metal springs are prone to oxidation and rust due to long-term contact with the contents, thus polluting the contents. Moreover, due to defects in the design of the pump body, there are disadvantages such as relatively slow pump start, relatively unstable pumping volume, and poor pumping effect during use. Summary of the Utility Model

[0004] The utility model aims to solve at least one problem existing in the prior art. For this purpose, the purpose of the utility model is to provide a double-spring external pump with a simple structure, convenient installation, fast pump start, relatively stable pumping volume, and good pumping effect.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A squeezing bottle pump body includes a pump core assembly, a shoulder sleeve, and a pressing cap. The shoulder sleeve is sleeved outside the pump core assembly, the pressing cap is arranged at the top of the pump core assembly. The pump core assembly includes a connection cover, a locking cover, an upper pump rod, a discharge rod, and a piston. A main body is arranged at the central position of the connection cover. The locking cover is connected to one end of the main body. The upper pump rod is connected in the locking cover. The discharge rod is connected to the upper pump rod and the lower part is located in the main body. The piston is connected to the discharge rod and is located in the main body. The pump core assembly further includes a first elastic member and a second elastic member. Both the first elastic member and the second elastic member are sleeved on the locking cover. One end of both the first elastic member and the second elastic member abuts against the locking cover, and the other end abuts against the upper pump rod.

[0007] Further on the basis of the above solution, two installation cavities are arranged on the locking cover, including a first installation cavity and a second installation cavity. The bottom end of the first elastic member is located in the first installation cavity, and the bottom end of the second elastic member is located in the second installation cavity.

[0008] Further on the basis of the above solution, the pump core assembly further includes a plugging member. The plugging member is arranged at the feed port of the main body. A limiting convex ring is arranged on the inner wall of the main body. The plugging member is located below the limiting convex ring.

[0009] Further on the basis of the above solution, the plugging member includes an outer ring, a plurality of connecting rods, and a plug. One end of the connecting rod is connected to the outer ring, and the other end is connected to the plug. The plug is located at the center of the outer ring.

[0010] Further based on the above solution, it further includes a valve sheet, and the valve sheet is arranged in the discharge port of the pressing cap.

[0011] Further based on the above solution, the top of the pressing cap is a concave arc-shaped structure.

[0012] Further based on the above solution, an outer edge is arranged at the bottom of the pressing cap, an inner edge is arranged at the top of the shoulder sleeve, and the outer edge is located below the inner edge.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. A double elastic member is arranged in the pump body. During the process of pressing and resetting, the double elastic member can instantaneously release explosive force, accelerate the pumping speed, increase the pumping volume, and have a better pumping effect.

[0015] 2. Both of the double elastic members are external type and will not contact the content during the pumping process, reducing the probability of oxidation and rust of the elastic member, and further improving the hygienic safety of the content in the bottle body. Description of the Drawings

[0016] Figure 1 is a cross-sectional view of the extrusion bottle pump body of the utility model;

[0017] Figure 2 is a three-dimensional view of the plugging member of the utility model.

[0018] In the figure:

[0019] 1. Pump core assembly, 11. Connecting cover, 111. Main body, 1111. Limit convex ring, 12. Locking cover, 121. First installation cavity, 122. Second installation cavity, 13. Upper pump rod, 14. Discharge rod, 15. Piston, 16. First elastic member, 17. Second elastic member, 18. Plugging member, 181. Outer ring, 182. Connecting rod, 183. Plug;

[0020] 2. Shoulder sleeve, 21. Inner edge;

[0021] 3. Pressing cap, 31. Outer edge;

[0022] 4. Valve sheet. Detailed Embodiments

[0023] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are only examples of the devices consistent with some aspects of the present application as detailed in the appended claims.

[0024] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those of ordinary skill in the field to which this utility model belongs. The words such as "a" or "an" used in the specification and claims of this application do not denote a limitation of quantity but mean that there is at least one. "Plurality" includes two, which is equivalent to at least two. Words such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. Words such as "connected" or "coupled" are not limited to physical or mechanical connections and may include electrical connections, whether direct or indirect. The singular forms of "a", "the" and "said" used in the specification and appended claims of this application are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0025] Please specifically refer to Figure 1-2 , a squeeze bottle pump body, comprising a pump core assembly 1, a shoulder sleeve 2 and a pressing cap 3. The shoulder sleeve 2 is sleeved outside the pump core assembly 1, and the pressing cap 3 is arranged on the top of the pump core assembly 1. Specifically, the pump core assembly 1 includes a connecting cover 11, a locking cover 12, an upper pump rod 13, a discharge rod 14 and a piston 15. A main body 111 is arranged at the central position of the connecting cover 11. The locking cover 12 is fixedly connected to one end of the main body 111 in a snap-fit manner. The upper pump rod 13 is connected in the locking cover 12. The pressing cap 3 is inserted into the upper pump rod 13. The discharge rod 14 is connected to the upper pump rod 13 and the lower part thereof is located in the main body 111. The piston 15 is connected to the discharge rod 14 and is located in the main body 111. The outer wall of the piston 15 is in close fit with the inner wall of the main body 111, and the inner wall of the piston 15 is in close fit with the outer wall of the discharge rod 14. Further, the pump core assembly 1 further includes a first elastic member 16 and a second elastic member 17. Both the first elastic member 16 and the second elastic member 17 are sleeved on the locking cover 12. One end of both the first elastic member 16 and the second elastic member 17 abuts against the locking cover 12, and the other end abuts against the upper pump rod 13 which also abuts against the locking cover 12. The first elastic member 16 and the second elastic member 17 play a role in resetting. When the pressing cap 3 is pressed, the two elastic members act together to instantaneously release explosive force, accelerating the pumping speed and increasing the pumping volume, and having a better pumping effect.

[0026] In this embodiment, the first elastic member 16 and the second elastic member 17 are metal springs. Optionally, the first elastic member 16 and the second elastic member 17 can also be all-plastic springs.

[0027] In order to ensure that the elastic member does not shift in position during compression or rebound, two installation cavities are provided on the lock cover 12, including a first installation cavity 121 and a second installation cavity 122. The bottom end of the first elastic member 16 is located in the first installation cavity 121, and the bottom end of the second elastic member 17 is located in the second installation cavity 122.

[0028] The pump core assembly 1 further includes a plugging member 18. The plugging member 18 is disposed at the feed inlet of the main body 111. A limiting convex ring 1111 is provided on the inner wall of the main body 111, and the plugging member 18 is located below the limiting convex ring 1111. The plugging member 18 includes an outer ring 181, four connecting rods 182, and a plug 183. One end of the connecting rod 182 is connected to the outer ring 181, and the other end is connected to the plug 183. The plug 183 is located at the center of the outer ring 181.

[0029] In this embodiment, the plugging member 18 is made of rubber material. The connecting rod 182 has elasticity. The plug 183 is a circular plug 183, which is adapted to the feed inlet of the main body 111 to improve the airtight performance. Under normal conditions, the plug 183 plugs the feed inlet of the main body 111 to prevent the content from flowing out. When pressing the head cap to pump the content, the connecting rod 182 deforms and the plug 183 rises, and the feed inlet of the main body 111 is opened, and the content flows into the main body 111.

[0030] An extrusion bottle pump body further includes a valve piece 4. The valve piece 4 is a one-way valve piece 4 and is made of rubber material. The valve piece 4 is disposed in the discharge port of the pressing cap 3. Under normal conditions, the valve piece 4 plugs the discharge port of the pressing cap 3 to prevent the content from flowing out. When pressing the head cap to pump the content, the valve piece 4 will open, and the content flows out from the discharge port of the pressing cap 3.

[0031] The top of the pressing cap 3 is a concave arc-shaped structure. When the content is pumped out, it will stay on the pressing cap 3 and will not flow out peripherally. Consumers can take it here.

[0032] An outer edge 31 is provided at the bottom of the pressing cap 3, and an inner edge 21 is provided at the top of the shoulder sleeve 2. The outer edge 31 is located below the inner edge 21. The inner edge 21 restricts the movement of the outer edge 31, so that the pressing cap 3 is restricted in the space formed by the shoulder sleeve 2 and the connecting cover 11, that is, this space is the movement space of the pressing cap 3.

[0033] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A squeeze bottle pump body, comprising a pump core assembly, a shoulder sleeve and a pressing cap, wherein the shoulder sleeve is arranged outside the pump core assembly, the pressing cap is arranged on the top of the pump core assembly, the pump core assembly comprises a connecting cover, a locking cover, an upper pump rod, a discharging rod and a piston, a main body is arranged at the center of the connecting cover, the locking cover is connected to one end of the main body, the upper pump rod is connected to the locking cover, the discharging rod is connected to the upper pump rod and the lower end part is located in the main body, the piston is connected to the discharging rod and is located in the main body, characterized in that: The pump core assembly also includes a first elastic member and a second elastic member, the first elastic member and the second elastic member are both sleeved on the lock cover, one end of the first elastic member and the second elastic member are in contact with the lock cover, and the other end is in contact with the pump rod on the lock cover; two installation cavities are provided on the lock cover, including a first installation cavity and a second installation cavity, the bottom end of the first elastic member is located in the first installation cavity, and the bottom end of the second elastic member is located in the second installation cavity.

2. The squeeze bottle pump body according to claim 1, characterized in that: The pump core assembly also includes a blocking piece, which is arranged at the feed inlet of the main body. A limiting convex ring is arranged on the inner wall of the main body, and the blocking piece is located below the limiting convex ring.

3. The squeeze bottle pump body according to claim 2, characterized in that: The plugging member comprises an outer ring, a plurality of connecting rods and a plug. One end of the connecting rod is connected to the outer ring, and the other end is connected to the plug. The plug is located at the center of the outer ring.

4. The squeeze bottle pump body according to claim 1 or 3, characterized in that: It also includes a valve plate, which is arranged in the discharge port of the pressing cap.

5. The squeeze bottle pump body according to claim 1, characterized in that: The top of the pressing cap is a concave arc-shaped structure.

6. The squeeze bottle pump body according to claim 1, characterized in that: The bottom of the pressing cap is provided with an outer edge, the top of the shoulder sleeve is provided with an inner edge, and the outer edge is located below the inner edge.

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