Pressing pump low in cost and convenient to assemble
By designing the main column and auxiliary column of the press pump as a centrally symmetrical structure, the problems of difficult mold design and assembly errors in the existing technology are solved, and low-cost and efficient assembly is achieved.
Patent Information
- Application Number
- CN202610175880.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-06
- Publication Date
- 2026-05-15
AI Technical Summary
The non-centrally symmetrical structure of the main column and auxiliary column in the existing push pump makes mold design difficult and assembly errors more likely, increasing costs and complexity.
The design adopts a centrally symmetrical structure with main and secondary columns, and reduces the difficulty of mold design and simplifies the assembly process through the design of connecting plates and reinforcing ribs.
It reduces mold design costs and the probability of assembly errors, improves assembly efficiency, and reduces labor and equipment costs.
Smart Images
Figure CN122040567A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a push pump, and more particularly to a low-cost and easy-to-assemble push pump. Background Technology
[0002] The press pump includes a body, a threaded cap, and a press head. The body contains a main column, a secondary column, and a piston. The secondary column is fixedly connected to the lower end of the main column, and the main column is fixedly connected to the lower end of the press head. The piston sleeve is set on the outer periphery of the main column and the secondary column. By pressing the press head, the main column, the secondary column, and the piston move downward, thereby completing the liquid dispensing.
[0003] However, in existing push pumps, the main column and the auxiliary column are generally not centrally symmetrical structures. That is, the existing main column and auxiliary column have a fixed installation direction. This design increases the difficulty of designing and processing the parts molds, and makes assembly prone to errors and inconvenient.
[0004] A push-pump with a secondary spring is disclosed in a prior patent published by the same applicant as this application, with publication number CN120576058A. In that patent, neither the main column nor the secondary column is a centrally symmetrical structure. During installation, the installation direction of the main column and the secondary column must be determined first, which not only makes the mold design difficult, but also makes it easy to make mistakes during assembly. Summary of the Invention
[0005] To solve the above-mentioned technical problems, the purpose of this invention is to provide a low-cost and easy-to-assemble push pump.
[0006] The technical solution adopted by the present invention to solve the problem is: a low-cost and easy-to-assemble push pump, including a main column and a secondary column, wherein the main column is used to transport liquid, the secondary column is installed at the lower end of the main column, and the main column and / or the secondary column adopts a centrally symmetrical structure.
[0007] As a further improvement to the above technical solution, it also includes a body and a piston, wherein the piston is movably connected to the body, and the main column and / or the auxiliary column drive the piston to move; the main column, the auxiliary column and the piston are all centrally symmetrical structures.
[0008] As a further improvement to the above technical solution, the main column adopts a centrally symmetrical structure; the main column includes an outer tube and an inner tube, the outer tube is sleeved on the outer periphery of the inner tube, a first liquid passage is formed between the outer tube and the inner tube, and the outer tube and the inner tube are connected together by a connecting piece; the connecting piece is fan-shaped, the connecting piece has an inner arc edge and an outer arc edge, the arc length of the inner arc edge is smaller than the arc length of the outer arc edge, the inner arc edge is fixedly connected to the outer wall of the inner tube, and the outer arc edge is fixedly connected to the inside of the outer tube; both ends of the outer arc edge are provided with reinforcing ribs.
[0009] As a further improvement to the above technical solution, the secondary column adopts a centrally symmetrical structure; the secondary column includes a disc portion, the upper and lower sides of the disc portion are recessed inward so that the edges bulge out at the upper and lower ends to form convex edges; a first connecting column is provided on the upper and lower sides of the disc portion.
[0010] As a further improvement to the above technical solution, it also includes a pusher head, wherein a second connecting post is provided inside the pusher head, and both the first and second connecting posts are provided with convex rings on their outer peripheries; both the upper and lower ends of the inner wall of the inner tube are provided with annular holes, and the first and second connecting posts are respectively inserted into the upper and lower ends of the inner tube, and the convex rings are engaged in the annular holes.
[0011] As a further improvement to the above technical solution, the push head includes a middle ring and an outer ring. The middle ring surrounds the outer periphery of the second connecting post, and the outer ring surrounds the outer periphery of the middle ring. An annular groove is provided on the lower outer wall of the middle ring, and the upper end of the outer tube is engaged with the annular groove.
[0012] As a further improvement to the above technical solution, it also includes a threaded cap and a body. The threaded cap includes an upper extension and a lower extension that are interconnected. The body is installed in the lower extension. The diameter of the upper extension is smaller than the diameter of the outer ring and larger than the diameter of the middle ring. When the push head is moved downward by an external force, the upper extension is inserted between the middle ring and the outer ring.
[0013] As a further improvement to the above technical solution, an annular blind hole with its upper end closed is provided between the middle ring and the outer ring, and the upper extension is movably connected in the annular blind hole; an annular platform is provided at the lower end of the upper extension, and an annular gap is provided between the upper extension and the middle ring, and a return spring is installed in the annular gap, with the upper and lower ends of the return spring abutting against the upper bottom wall of the annular blind hole and the annular platform, respectively.
[0014] As a further improvement to the above technical solution, the length of the inner tube is greater than the length of the outer tube, and the upper and lower ends of the inner tube extend out of the outer tube; there is a gap between the lower end of the outer tube and the upper end of the convex edge, and the piston is installed in the gap.
[0015] The beneficial effects of this invention are: by designing the main column and the secondary column as a centrally symmetrical structure, the main column and the secondary column themselves are not distinguished by their front and back, and there is no need to determine the installation direction in advance during installation, which reduces the mold design cost and facilitates assembly. Attached Figure Description
[0016] The present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments.
[0017] Figure 1 This is a cross-sectional view of the structure of the present invention; Figure 2 This is a schematic diagram of the main column structure of the present invention; Figure 3 This is a schematic diagram of the structure of the secondary column of the present invention; Figure 4 for Figure 1 Enlarged structural diagram at point A; Figure 5 for Figure 1 Enlarged structural diagram at point B; Figure 6 This is a partial structural cross-sectional view of the present invention after the press head is pressed down; Figure 7 This is a schematic diagram of the overall structure of the present invention; In the diagram: 1-Main column, 11-Inner tube, 111-Annular hole, 12-Outer tube, 13-Connecting piece, 14-Reinforcing rib, 2-Secondary column, 21-Disc, 211-Protruding edge, 22-First connecting column, 221-Protruding ring, 3-Push head, 31-Second connecting column, 32-Middle ring, 321-Annular groove, 33-Outer ring, 34-Annular blind hole, 4-Threaded cap, 41-Upper extension, 411-Annular platform, 42-Lower extension, 5-Body, 6-Reset spring, 71-First liquid passage, 72-Second liquid passage, 73-Liquid passage gap, 8-Piston Detailed Implementation In all embodiments of the present invention, unless otherwise emphasized, temperature and pressure are at normal temperature and pressure. Unless otherwise specified, the equipment can be used according to conventional settings.
[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.
[0019] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.
[0020] Reference Figures 1 to 7 A low-cost and easy-to-assemble push-pump includes a main column 1 and a secondary column 2. The main column 1 is used to transport liquid, and the secondary column 2 is installed at the lower end of the main column 1. The main column 1 and / or the secondary column 2 adopt a centrally symmetrical structure. By adopting a fully symmetrical structure (centrally symmetrical structure), the design and processing difficulty of accessory molds is reduced, and the mold cost is reduced; the probability of assembly errors is reduced, manual installation is convenient, and labor costs are reduced; the design and processing difficulty of installation equipment is reduced, and equipment costs are reduced.
[0021] In a preferred embodiment, the system further includes a body 5 and a piston 8. The piston 8 is movably connected within the body 5. The main column 1 and the auxiliary column 2 drive the piston 8 to move up and down. The main column 1, the auxiliary column 2, and the piston 8 are all centrally symmetrical structures, which further reduces mold costs and the probability of assembly errors, making assembly convenient while maintaining low cost.
[0022] In a preferred embodiment, the main column 1 adopts a centrally symmetrical structure (i.e., symmetrical in all directions); the main column 1 includes an outer tube 12 and an inner tube 11, the outer tube 12 is sleeved on the outer periphery of the inner tube 11, a first liquid passage 71 is formed between the outer tube 12 and the inner tube 11, and the outer tube 12 and the inner tube 11 are connected together by a connecting piece 13; the connecting piece 13 is fan-shaped, and has an inner arc edge and an outer arc edge, the arc length of the inner arc edge is smaller than the arc length of the outer arc edge, the inner arc edge is fixedly connected to the outer wall of the inner tube 11, and the outer arc edge is fixedly connected to the inside of the outer tube 12; both ends of the outer arc edge are provided with reinforcing ribs 14, the main column 1 is integrally formed, and the setting of the connecting piece 13 and the reinforcing ribs 14 improves the structural stability of the main column 1.
[0023] In a preferred embodiment, the secondary column 2 adopts a centrally symmetrical structure; the secondary column 2 includes a disk portion 21, the middle of the upper and lower sides of the disk portion 21 is recessed inward so that the edges bulge upward and downward, and the bulging part is defined as a convex edge 211; a first connecting column 22 is provided on the upper and lower sides of the disk portion 21.
[0024] In a preferred embodiment, the device further includes a push head 3, which has a second connecting post 31 inside. The outer periphery of both the first connecting post 22 and the second connecting post 31 is provided with a protruding ring 221. The upper and lower ends of the inner wall of the inner tube 11 are provided with annular holes 111. The first connecting post 22 and the second connecting post 31 are respectively inserted into the upper and lower ends of the inner tube 11, and the protruding ring 221 is engaged in the annular hole 111, thereby fixing the push head 3, the main post 1 and the auxiliary post 2 together.
[0025] In a preferred embodiment, the pusher head 3 includes a middle ring portion 32 and an outer ring portion 33. The middle ring portion 32 surrounds the outer periphery of the second connecting post 31, and the outer ring portion 33 surrounds the outer periphery of the middle ring portion 32. A second liquid passage 72 is formed between the middle ring portion 32 and the second connecting post 31. An annular groove 321 is provided on the lower outer wall of the middle ring portion 32, and the upper end of the outer tube portion 12 is engaged with the annular groove 321, thereby connecting the first liquid passage 71 and the second liquid passage 72 together.
[0026] In some embodiments, the device further includes a threaded cap 4 and a body 5. The threaded cap 4 includes an upper extension 41 and a lower extension 42 that are interconnected. The middle portions of the upper extension 41 and the lower extension 42 are both hollowed out. The inner wall of the lower extension 42 is provided with threads. The body 5 is installed inside the lower extension 42. The diameter of the upper extension 41 is smaller than the diameter of the outer ring 33, and the diameter of the upper extension 41 is larger than the diameter of the middle ring 32. When the push head 3 is moved downward by an external force, the upper extension 41 is inserted between the middle ring 32 and the outer ring 33.
[0027] In a preferred embodiment, an annular blind hole 34 (i.e., having an upper bottom wall) with its upper end closed is provided between the middle ring portion 32 and the outer ring portion 33. The upper extension portion 41 is movably connected within the annular blind hole 34. An annular platform 411 is provided at the lower end of the upper extension portion 41. The annular platform 411 extends inward. An annular gap is provided between the upper extension portion 41 and the middle ring portion 32. A reset spring 6 is installed within the annular gap. The upper and lower ends of the reset spring 6 abut against the upper bottom wall of the annular blind hole 34 and the annular platform 411, respectively. The push head 3 is reset by installing the reset spring 6.
[0028] In a preferred embodiment, the length of the inner tube 11 is greater than the length of the outer tube 12, and the upper and lower ends of the inner tube 11 extend out of the outer tube 12; there is a gap between the lower end of the outer tube 12 and the upper end of the protrusion 211, and the piston 8 is installed within this gap. Figure 7 As shown (reset spring 6 omitted), when the push-button 3 is pressed down, the lower end of the outer tube 12 is inserted into the piston 8, causing the protruding edge 211 to disengage from the piston 8. A liquid passage gap 73 is formed between the piston 8 and the protruding edge 211. The liquid in the body 5 enters the first liquid passage channel 71 through the liquid passage gap 73 and flows upward into the second liquid passage channel 72, and finally exits from the liquid outlet of the push-button 3.
[0029] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present invention.
Claims
1. A low-cost and easy-to-assemble push-pump, comprising a main column (1) and a secondary column (2), wherein the main column (1) is used to convey liquid, and the secondary column (2) is installed at the lower end of the main column (1), characterized in that: The main column (1) and / or the secondary column (2) adopt a centrally symmetrical structure.
2. The push pump as described in claim 1, characterized in that: It also includes a body (5) and a piston (8), the piston (8) being movably connected within the body (5), and the main column (1) and / or the auxiliary column (2) driving the piston (8) to move; The main column (1), the secondary column (2), and the piston (8) are all centrally symmetrical structures.
3. A low-cost and easy-to-assemble push pump as described in claim 2, characterized in that: The main column (1) adopts a centrally symmetrical structure; The main column (1) includes an outer tube (12) and an inner tube (11). The outer tube (12) is sleeved on the outer periphery of the inner tube (11). A first liquid passage (71) is formed between the outer tube (12) and the inner tube (11). The outer tube (12) and the inner tube (11) are connected together by a connecting piece (13). The connecting piece (13) is fan-shaped and has an inner arc edge and an outer arc edge. The arc length of the inner arc edge is smaller than the arc length of the outer arc edge. The inner arc edge is fixedly connected to the outer wall of the inner tube (11), and the outer arc edge is fixedly connected to the inside of the outer tube (12). Both ends of the outer arc edge are provided with reinforcing ribs (14).
4. A low-cost and easy-to-assemble push pump as described in claim 3, characterized in that: The secondary column (2) adopts a centrally symmetrical structure; The sub-column (2) includes a disc portion (21), the upper and lower sides of the disc portion (21) are recessed inward so that the edges protrude to the upper and lower ends to form a convex edge (211). The disk portion (21) has first connecting posts (22) on its upper and lower sides.
5. A low-cost and easy-to-assemble push pump as described in claim 4, characterized in that: It also includes a pusher (3), in which a second connecting post (31) is provided, and a protruding ring (221) is provided on the outer periphery of both the first connecting post (22) and the second connecting post (31). The inner tube (11) has an annular hole (111) at both the upper and lower ends of its inner wall. The first connecting post (22) and the second connecting post (31) are respectively inserted into the upper and lower ends of the inner tube (11), and the convex ring (221) is engaged in the annular hole (111).
6. A low-cost and easy-to-assemble push pump as described in claim 5, characterized in that: The push head (3) includes a middle ring (32) and an outer ring (33), the middle ring (32) surrounding the outer periphery of the second connecting post (31), and the outer ring (33) surrounding the outer periphery of the middle ring (32); An annular groove (321) is provided on the lower outer wall of the middle ring (32), and the upper end of the outer tube (12) is engaged in the annular groove (321).
7. A low-cost and easy-to-assemble push pump as described in claim 6, characterized in that: It also includes a threaded cap (4) and a body (5), the threaded cap (4) including an upper extension (41) and a lower extension (42) that are interconnected, and the body (5) is installed in the lower extension (42); The diameter of the upper extension (41) is smaller than the diameter of the outer ring (33), and the diameter of the upper extension (41) is larger than the diameter of the middle ring (32); when the push head (3) moves downward under external force, the upper extension (41) is inserted between the middle ring (32) and the outer ring (33).
8. A low-cost and easy-to-assemble push pump as described in claim 7, characterized in that: An annular blind hole (34) with its upper end closed is provided between the middle ring (32) and the outer ring (33), and the upper extension (41) is movably connected inside the annular blind hole (34); The lower end of the upper extension (41) is provided with an annular platform (411), and an annular gap is provided between the upper extension (41) and the middle ring (32). A reset spring (6) is installed in the annular gap, and the upper and lower ends of the reset spring (6) abut against the upper bottom wall of the annular blind hole (34) and the annular platform (411) respectively.
9. A low-cost and easy-to-assemble push pump as described in claim 4, characterized in that: The length of the inner tube (11) is greater than the length of the outer tube (12), and the upper and lower ends of the inner tube (11) extend out of the outer tube (12). There is a gap between the lower end of the outer tube (12) and the upper end of the protrusion (211), and the piston (8) is installed in the gap.