A cream pump head capable of adjusting the gear

Abstract

The application relates to the technical field of lotion pump heads, in particular discloses a lotion pump head capable of adjusting gears, which comprises a bottle cap, an installation neck body is integrally formed on the upper end of the bottle cap, a gear adjusting mechanism for limiting the lower position of the pump head body is installed on the outer wall of the installation neck body, the gear adjusting mechanism comprises at least two ring bodies which are vertically stacked and rotationally installed on the outside of the installation neck body, a limiting block for limiting the lower position of the pump head body is formed on the outer wall of the ring body, a limiting gland for limiting the axial movement of the ring body is installed on the outside of the upper end of the installation neck body through screw threads, and a vertical sliding groove matched with the limiting block is formed on the inner wall of the pump head body. The beneficial effect is that, through the gear adjusting mechanism, users can select different pressing strokes according to actual needs, thereby accurately controlling the pump-out amount each time, avoiding product waste caused by excessive use, and being especially suitable for expensive cosmetics and helping to reduce long-term use cost.

Description

Technical Field

[0001] This application relates to the field of emulsion pump head technology, and in particular to an emulsion pump head with adjustable settings. Background Technology

[0002] A lotion pump, also known as a lotion dispensing pump or lotion press pump, is a packaging component commonly used in cosmetics and personal care products. Its main function is to dispense liquid or semi-liquid products such as lotions, creams, shampoos, and shower gels into a metered and convenient manner for use by pressing. A traditional lotion pump typically consists of a locking cap, pump chamber, pump head, main column, secondary column, piston, glass beads, a spring mechanism, and a locking cap that secures the main column, secondary column, and piston to the pump chamber.

[0003] To avoid waste, precise dosage control is necessary when using some expensive cosmetics. For example, serums and eye drops sometimes only require a micro-pump, while creams or gels sometimes only require half a pump. Current lotion pumps rely entirely on experience to control the pump's pressure, making it impossible to precisely control the amount dispensed each time, easily leading to waste. Utility Model Content

[0004] This application proposes an adjustable emulsion pump head to solve the above-mentioned problems.

[0005] The technical solution of this application is implemented as follows:

[0006] An adjustable emulsion pump head includes a cap, an integrally formed mounting neck at the upper end of the cap, a suction tube fixed inside the mounting neck, a piston rod slidably mounted inside the suction tube, a guide sealing sleeve restricting the rotation of the piston rod at the upper end of the suction tube, a return spring mounted at the lower end of the piston rod, a first stop ball mounted inside the suction tube below the return spring, a pump head body mounted at the upper end of the piston rod, an adjustable mechanism restricting the downward movement of the pump head body mounted on the outer wall of the mounting neck, the adjustable mechanism including at least two vertically stacked and rotatably mounted outside the mounting neck, a limiting block formed on the outer wall of the rings restricting the downward movement of the pump head body, a limiting pressure cap restricting the axial movement of the rings threaded onto the outer side of the upper end of the mounting neck, a vertical sliding groove formed on the inner wall of the pump head body cooperating with the limiting block, and an outlet tube with an inner cavity communicating with the inner cavity of the piston rod fixed on the side wall of the pump head body.

[0007] Furthermore, a second baffle ball is placed at the upper end of the piston rod to restrict the backflow of liquid within the pump head body.

[0008] Furthermore, the outer wall of the mounting neck is formed with several layered mounting steps, and multiple ring bodies are rotatably mounted on different steps of the layered mounting steps.

[0009] Furthermore, the horizontal cross-sectional dimension of the limiting block on the upper ring body is not greater than the cross-sectional dimension of the limiting block on the lower ring body, and the upper side of the limiting block on the lower ring body is provided with a connecting protrusion extending to the lower side of the limiting block on the upper ring body, and the connecting protrusion is in contact with the limiting block of the upper ring body.

[0010] Furthermore, the outer wall of the mounting neck is formed with at least one rotating limiting groove that vertically penetrates all the layered mounting steps, and the inner wall of the ring is formed with a rotating block that extends into the rotating limiting groove.

[0011] Furthermore, the ring body is specifically divided into a primary ring body, a secondary ring body, and a tertiary ring body. A primary limiting block is formed on the outer wall of the primary ring body, a secondary limiting block is formed on the outer wall of the secondary ring body, and a tertiary limiting block is formed on the outer wall of the tertiary ring body. The upper ends of the secondary and tertiary limiting blocks are all formed with connecting protrusions.

[0012] Furthermore, a positioning mark is formed on the outer wall of the pump head body at the limit position corresponding to the limit block.

[0013] By adopting the above technical solution, the beneficial effects of this application are as follows:

[0014] 1. With the gear adjustment mechanism, users can select different pressing strokes according to actual needs, thereby accurately controlling the pump volume each time and avoiding product waste caused by overuse. It is especially suitable for expensive cosmetics and helps reduce long-term use costs.

[0015] 2. The gear adjustment mechanism has a simple structure, consisting of multiple rings, limit blocks, and vertical slides. It is easy to operate; users only need to rotate the rings to switch gears without complicated steps, which improves the intuitiveness and convenience of user operation.

[0016] 3. The gear adjustment mechanism adopts a layered design, with the ring body linked by protrusions to ensure the continuity and stability of gear switching, avoid misoperation, and improve the reliability of the device.

[0017] 4. The positioning marks on the outer wall of the pump head provide intuitive position indication, making it easy for users to quickly identify the current settings and further optimizing the user experience.

[0018] 5. The overall structure is compact, easy to install and manufacture, highly compatible with existing emulsion pump components, and easy to promote and apply to various cosmetic packaging to meet diverse market demands. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the main sectional view of this application;

[0021] Figure 2 This is a perspective view of this application;

[0022] Figure 3 This is an isopyroscopic sectional view of this application;

[0023] Figure 4 This is a schematic diagram of the first explosion of the gear shifting mechanism in this application;

[0024] Figure 5 This is a second explosion diagram of the gear shifting mechanism of this application.

[0025] The annotations in the attached figures are explained as follows:

[0026] 1. Bottle cap; 2. Mounting neck; 21. Layered mounting steps; 22. Rotary limiting groove; 23. Limiting cap; 3. Gear adjustment mechanism; 31. Primary ring; 32. Secondary ring; 33. Tertiary ring; 34. Primary limiting block; 35. Secondary limiting block; 36. Tertiary limiting block; 37. Rotating block; 38. Connecting protrusion; 4. Suction tube; 5. Guide sealing sleeve; 6. Piston rod; 7. Pump head body; 71. Discharge tube; 72. Vertical slide groove; 73. Positioning mark; 8. First stop ball; 9. Return spring; 10. Second stop ball. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] like Figures 1-5As shown, an adjustable emulsion pump head includes a cap 1, with an integrally formed mounting neck 2 at the upper end of the cap 1. A suction tube 4 is fixed inside the mounting neck 2, and a piston rod 6 is slidably mounted inside the suction tube 4. The piston rod 6 has a hollow structure, with a rubber piston plate slidably mounted inside the upper end of the suction tube 4 at its lower end. A sliding seal is achieved by the contact between the rubber piston plate and the inner wall of the suction tube 4. A guide sealing sleeve 5 is installed at the upper end of the suction tube 4 to restrict the rotation of the piston rod 6. This guide sealing sleeve 5 engages with a protrusion on the outer wall of the piston rod 6 through an internal keyway, preventing the piston rod 6 from rotating while maintaining a seal, ensuring that the piston rod 6 only rotates within the pump. The piston rod 6 can move axially, improving its reliability and service life. A return spring 9 is installed at the lower end of the piston rod 6, providing an upward restoring force so that the piston rod 6 automatically returns to its original position after being pressed, achieving continuous pumping. A first stop ball 8 is installed inside the suction pipe 4 below the return spring 9. The first stop ball 8 acts as a one-way valve, preventing liquid from flowing back into the container from the suction pipe 4, ensuring that only a predetermined amount of liquid is discharged with each press. A pump head body 7 is installed at the upper end of the piston rod 6. A gear adjustment mechanism 3 is installed on the outer wall of the mounting neck 2 to limit the downward movement of the pump head body 7. The gear adjustment mechanism 3 includes... Three vertically stacked and rotatably mounted rings are installed outside the mounting neck 2. The rings are divided into a primary ring 31, a secondary ring 32, and a tertiary ring 33. A primary limiting block 34 is formed on the outer wall of the primary ring 31, a secondary limiting block 35 is formed on the outer wall of the secondary ring 32, and a tertiary limiting block 36 is formed on the outer wall of the tertiary ring 33. The upper ends of the secondary limiting blocks 35 and the tertiary limiting blocks 36 are both formed with connecting protrusions 38. The gear adjustment mechanism 3 changes the position of the limiting blocks by rotating the rings, thereby limiting the downward stroke of the pump head body 7 and realizing the adjustment of the liquid output at different gears to meet the user's needs for different emulsion dosages. A limiting cap 23 is threadedly installed on the upper outer side of the mounting neck 2, pressing against the upper surface of the first-stage ring 31. The limiting cap 23 fixes the axial position of the ring, preventing the ring from falling off, while allowing the ring to rotate freely. A vertical sliding groove 72 is formed on the inner wall of the pump head body 7, which cooperates with the limiting block. The vertical sliding groove 72 is slidably connected to the limiting block, allowing the pump head body 7 to move along the limiting block when it is pressed down, but the pressing depth is limited by the blocking of the limiting block, thereby controlling the liquid output. A liquid outlet pipe 71 is fixed on the side wall of the pump head body 7, which communicates with the inner cavity of the piston rod 6. The liquid outlet pipe 71 is used to guide the liquid out of the inner cavity of the piston rod 6.

[0029] In another preferred embodiment of the present invention, a second baffle ball 10 is placed at the upper end of the piston rod 6 to restrict the backflow of liquid in the pump head body 7. The second baffle ball 10 closes the channel when the piston rod 6 rises to prevent liquid from flowing back from the pump head body 7 into the piston rod 6, thereby ensuring the accuracy of liquid dispensing and avoiding waste.

[0030] In another preferred embodiment of the present invention, the outer wall of the mounting neck 2 is formed with a layered mounting ladder 21 having at least three steps. The first-level ring 31, the second-level ring 32, and the third-level ring 33 are rotatably mounted on different steps of the layered mounting ladder 21 from top to bottom. There is a gap between the upper and lower end faces of the first-level ring 31, the second-level ring 32, and the third-level ring 33 to reduce the friction when the rings rotate. The layered mounting ladder 21 provides an independent mounting platform, allowing each ring to rotate independently without interfering with each other, while ensuring accurate axial positioning of the rings and improving the stability and accuracy of gear adjustment.

[0031] In another preferred embodiment of the present invention, the horizontal cross-sectional dimension of the limiting block on the upper ring body is not greater than the cross-sectional dimension of the limiting block on the lower ring body, and the cross-sectional dimension of the lowest limiting block is smaller than the cross-sectional dimension of the vertical slide groove 72. A connecting protrusion 38 extending to the lower side of the limiting block on the upper ring body is provided on one side of the upper end of the limiting block. The connecting protrusion 38 is 0.5-1mm high and contacts the limiting block of the upper ring body. This design allows the lower ring body to rotate synchronously through the connecting protrusion 38 when the upper ring body is rotated counterclockwise, and the upper ring body to rotate synchronously through the connecting protrusion 38 when the lower ring body is rotated clockwise, thereby achieving linkage adjustment, simplifying user operation, and ensuring that the limiting block positions are coordinated to avoid gear confusion.

[0032] As another preferred embodiment of the present invention, at least one rotating limiting groove 22 is formed on the outer wall of the mounting neck 2, which vertically penetrates all the layered mounting steps 21, and a rotating block 37 is formed on the inner wall of the ring, extending into the rotating limiting groove 22. The rotating limiting groove 22 and the rotating block 37 cooperate to limit the rotation angle of the ring, prevent the ring from rotating excessively and affecting the gear adjustment speed, and improve the reliability and safety of gear adjustment.

[0033] As another preferred embodiment of the present invention, a positioning mark 73 is formed on the outer wall of the pump head body 7 at the position corresponding to the limit block. The positioning mark 73 provides a visual reference for the user, helps to quickly identify the current gear, and improves the user experience and ease of operation (the positioning mark 73 can correspond to any limit position of the rotating limit groove 22, making it easy for the user to identify the position of the limit block).

[0034] The working principle of this application is as follows:

[0035] The working principle of the emulsion pump head in this application is based on the control of the downward stroke of the pump head body 7 by the gear adjustment mechanism 3, thereby realizing the precise adjustment of the pumping volume.

[0036] First, the pump head body 7 is connected to the suction pipe 4 via the piston rod 6. The suction pipe 4 is equipped with a return spring 9 and a first stop ball 8. The upper end of the piston rod 6 is equipped with a second stop ball 10 to prevent liquid backflow. The inner wall of the pump head body 7 is formed with a vertical sliding groove 72, which cooperates with the limiting block on the ring body. The ring body is rotatably mounted on the layered mounting steps 21 of the mounting neck body 2, and its horizontal rotation angle is limited by the cooperation of the rotation limiting groove 22 and the rotating block 37. The axial vertical movement of the ring body is limited by the limiting pressure cover 23, ensuring that the ring body can only rotate and cannot be displaced axially.

[0037] When in use, install the straw at the lower end of the suction tube 4, and then tighten the bottle cap 1 onto the bottle body through the threaded groove (a sealing gasket is placed inside the bottle cap 1). When the user presses the pump head body 7, the piston rod 6 slides downward in the suction tube 4, generating negative pressure to draw the product out of the container and discharge it through the outlet tube 71.

[0038] The downward movement distance of the pump head body 7 is limited by the alignment state between the limiting block on the ring and the vertical slide groove 72:

[0039] When the limiting block of the first-stage ring 31 is not aligned with the vertical slide groove 72, the lower end of the pump head body 7 will abut against the upper surface of the first-stage limiting block 34 when it moves down, resulting in the shortest downward stroke and achieving micro-pump output.

[0040] When the first-stage ring 31 is rotated to align the first-stage limiting block 34 with the vertical slide groove 72, but the second-stage limiting block 35 is not aligned, the pump head body 7 will move down and abut against the upper end face of the second-stage limiting block 35, increasing the downward stroke and the pump output correspondingly.

[0041] When the secondary ring 32 is rotated, the primary ring 31 is driven to rotate synchronously through the connecting protrusion 38 on it, so that the primary and secondary limit blocks 35 are aligned with the vertical slide groove 72. However, when the tertiary limit block 36 is not aligned, the pump head body 7 moves down and abuts against the upper end face of the tertiary limit block 36, and the downward stroke is further increased.

[0042] When the three-stage ring 33 is rotated, all rings are rotated through the connecting protrusion 38, so that all limit blocks are aligned with the vertical slide groove 72, and the pump head body 7 can be moved down to the limit position to achieve the maximum pumping volume.

[0043] After being pressed, the return spring 9 pushes the piston rod 6 and the pump head body 7 back to their original positions, preparing for the next operation. Through this multi-stage limiting mechanism, users can select different speeds by rotating the ring to precisely control the pump output, adapting to different needs from micro-pump to full-pump. Throughout the process, the first stop ball 8 and the second stop ball 10 ensure unidirectional liquid flow, prevent backflow, and guarantee pumping efficiency.

[0044] Components not described in detail in this article are existing technologies.

[0045] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An adjustable emulsion pump head, comprising a bottle cap (1), wherein an integrally formed mounting neck (2) is formed on the upper end of the bottle cap (1), a suction tube (4) is fixed inside the mounting neck (2), a piston rod (6) is slidably mounted inside the suction tube (4), a guide sealing sleeve (5) for restricting the rotation of the piston rod (6) is installed on the upper end of the suction tube (4), a return spring (9) is installed on the lower end of the piston rod (6), a first stop ball (8) is installed inside the suction tube (4) at a position below the return spring (9), and a pump head body (7) is installed on the upper end of the piston rod (6), characterized in that: The mounting neck (2) is equipped with a gear adjustment mechanism (3) that restricts the downward movement of the pump head body (7). The gear adjustment mechanism (3) includes at least two vertically stacked and rotatably mounted rings on the outside of the mounting neck (2). A limiting block is formed on the outer wall of the rings to restrict the downward movement of the pump head body (7). A limiting pressure cap (23) that restricts the axial movement of the rings is threaded onto the upper outer side of the mounting neck (2). A vertical sliding groove (72) that cooperates with the limiting block is formed on the inner wall of the pump head body (7). An outlet pipe (71) whose inner cavity communicates with the inner cavity of the piston rod (6) is fixed on the side wall of the pump head body (7).

2. The emulsion pump head with adjustable speed according to claim 1, characterized in that: The piston rod (6) has a second baffle ball (10) placed at the upper end inside to restrict the backflow of liquid in the pump head body (7).

3. The emulsion pump head with adjustable speed according to claim 1, characterized in that: The outer wall of the mounting neck (2) is formed with several layered mounting steps (21), and multiple ring bodies are rotated and installed on different steps of the layered mounting steps (21).

4. The emulsion pump head with adjustable speed according to claim 1, characterized in that: The horizontal cross-sectional dimension of the limiting block on the upper ring body is not greater than the cross-sectional dimension of the limiting block on the lower ring body. The upper side of the limiting block on the lower ring body is provided with a connecting protrusion (38) extending to the lower side of the limiting block on the upper ring body. The connecting protrusion (38) contacts the limiting block of the upper ring body.

5. The emulsion pump head with adjustable speed according to claim 3, characterized in that: The outer wall of the mounting neck (2) is formed with at least one rotating limiting groove (22) that vertically penetrates all the layered mounting steps (21), and the inner wall of the ring is formed with a rotating block (37) that extends into the rotating limiting groove (22).

6. The emulsion pump head with adjustable speed according to claim 1, characterized in that: The pump head body (7) has a positioning mark (73) formed on the outer wall corresponding to the limit position of the limiting block.

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