Pump head assembly and liquid storage bottle

Abstract

This invention discloses a pump head assembly and a storage bottle. The pump head assembly includes: a pump head; a pressing unit disposed on the pump head; and a top valve disposed on the pressing unit. The pressing unit drives the top valve to move under the action of an external force. During the movement, the top valve pushes the pump head to move, causing the pump head to dispense liquid. The position of the top valve on the pressing unit is adjustable. By adjusting the position of the top valve on the pressing unit, the distance by which the pump head is moved is changed, thereby adjusting the liquid dispensing rate of the pump head. The pump head assembly of this invention, by incorporating the pressing unit and the top valve, allows for the adjustment of the liquid dispensing rate of the pump head by changing the distance the pump head is moved through the top valve, thereby avoiding waste.

Description

Technical Field

[0001] This invention relates to the field of pump head technology, and more specifically to a pump head assembly and a liquid storage bottle. Background Technology

[0002] People frequently use various bottled liquids in their daily lives, such as cosmetics, shower gels, shampoos, and hand soaps. For ease of use, most existing bottled liquids are pump-operated, dispensing liquid by pressing. Although the cap designs vary slightly between different bottle types, the underlying principle is similar. Current caps are all press-operated, dispensing a fixed amount of liquid per press, making it impossible to adjust the flow and potentially leading to waste. Summary of the Invention

[0003] This invention discloses a pump head assembly and a liquid storage bottle, which solves the problem that the liquid output of existing pump head assemblies is fixed each time it is pressed and cannot be adjusted.

[0004] According to one aspect of the present invention, a pump head assembly is disclosed, comprising: a pump head; a pressing unit disposed on the pump head; and a top valve disposed on the pressing unit, wherein the pressing unit is used to drive the top valve to move under the action of an external force, and the top valve pushes the pump head to move during the movement, thereby causing the pump head to discharge liquid; the position of the top valve on the pressing unit is adjustable, and the top valve changes the distance by which it pushes the pump head to move by adjusting its position on the pressing unit, thereby adjusting the liquid discharge rate of the pump head.

[0005] Furthermore, the pressing unit includes: a knob sleeve fitted onto the top valve, a portion of the top valve extending beyond the knob sleeve; the knob sleeve is movable relative to the pump head; under external force, the knob sleeve drives the top valve to move toward the pump head, the top valve abuts against the pump head and pushes the pump head to move; the position of the top valve relative to the knob sleeve is adjustable, and the length of the portion extending from the knob sleeve is changed by adjusting the position of the top valve on the knob sleeve, thereby changing the distance by which the top valve pushes the pump head to move.

[0006] Furthermore, the pressing unit also includes a knob rotatably mounted on the knob sleeve. The knob is driven and connected to the top valve. The knob is used to drive the top valve to rotate, and the length of the part of the top valve extending out of the knob sleeve is adjusted by rotation.

[0007] Further, the knob includes: a top cover located outside the knob sleeve; a limiting sleeve connected to the top cover, the limiting sleeve being located inside the knob sleeve, and the top valve being disposed inside the limiting sleeve; the limiting sleeve is provided with a limiting groove, and the outer peripheral wall of the top valve is provided with a limiting protrusion, the limiting protrusion being located inside the limiting sleeve, and the two ends of the limiting protrusion engaging with the limiting groove to limit the valve so that the top valve rotates with the knob, and simultaneously, the top valve is movable in the direction of the rotation axis of the knob to adjust the length of the portion extending out of the knob sleeve.

[0008] Furthermore, the inner wall of the knob sleeve is provided with an internal thread, and the limiting protrusion is provided with an external thread that matches the internal thread.

[0009] Furthermore, the limiting sleeve is provided with a first positioning part, and the inner wall of the knob sleeve is provided with a second positioning part. When the knob rotates relative to the knob sleeve to a preset position, the first positioning part and the second positioning part cooperate to limit the knob from continuing to rotate.

[0010] Furthermore, the first positioning part is a positioning bead, and the second positioning part is a positioning hole that matches the positioning bead.

[0011] Furthermore, the pressing unit also includes a mounting base disposed on the pump head, and the knob sleeve is movably disposed on the mounting base.

[0012] Furthermore, the pressing unit also includes: a housing, sleeved on the outside of the mounting base, both the mounting base and the housing are provided with clearance grooves, the clearance grooves on the mounting base and the housing are positioned correspondingly, and the liquid outlet pipe of the pump head extends from the clearance groove to the outside of the housing.

[0013] According to a second aspect of the present invention, a liquid storage bottle is disclosed, comprising the pump head assembly described above.

[0014] In operation, pressure is applied to the pressing unit, causing it to move the top valve a fixed distance toward the pump head. During this movement, the top valve presses against the pump head and pushes the pump core, thus dispensing liquid. To adjust the dispensing volume, the position of the top valve on the pressing unit is adjusted, increasing or decreasing the distance between the top valve and the pump head. Since the distance the pressing unit moves the top valve is fixed each time, changes in this distance alter the distance the top valve pushes the pump core, resulting in a change in the dispensing volume.

[0015] The pump head assembly of the present invention, by setting a pressing unit and a top valve, allows the pump head to be moved a distance by adjusting the position of the top valve on the pressing unit, thereby adjusting the liquid output of the pump head and avoiding waste. Furthermore, since the pressing unit moves the top valve the same distance each time, i.e., the stroke is the same each time, the feel during pressing is consistent, thus improving the user experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pump head assembly according to Embodiment 1 of the present invention;

[0017] Figure 2 This is a cross-sectional view of the pressing unit of the pump head assembly according to Embodiment 1 of the present invention;

[0018] Figure 3 This is a schematic diagram of the top valve of the pump head assembly according to Embodiment 1 of the present invention;

[0019] Figure 4 This is another structural schematic diagram of the top valve of the pump head assembly in Embodiment 1 of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the knob of the pump head assembly according to Embodiment 1 of the present invention;

[0021] Figure 6 This is an assembly diagram of the knob and top valve of the pump head assembly according to Embodiment 1 of the present invention;

[0022] Figure 7 This is a schematic diagram of the knob sleeve of the pump head assembly according to Embodiment 1 of the present invention;

[0023] Figure 8 This is a schematic diagram of the guide rail structure of the pump head assembly according to Embodiment 1 of the present invention;

[0024] Figure 9 This is a schematic diagram of the mounting base of the pump head assembly according to Embodiment 1 of the present invention;

[0025] Figure 10 This is a schematic diagram of the outer shell of the pump head assembly according to Embodiment 1 of the present invention;

[0026] Legend: 10. Pump head; 11. Pump core; 20. Pressing unit; 21. Knob sleeve; 211. Internal thread; 212. Second positioning part; 213. Slide groove; 22. Knob; 221. Top cover; 222. Limiting sleeve; 223. Limiting groove; 224. First positioning part; 225. Limiting rib; 23. Mounting base; 24. Housing; 25. Clearance groove; 26. Guide rail; 27. Guide sleeve; 30. Top valve; 31. Limiting protrusion; 32. External thread. Detailed Implementation

[0027] The present invention will be further described below with reference to embodiments, but is not limited to the contents of the specification.

[0028] like Figures 1 to 10 According to Embodiment 1 of the present invention, a pump head assembly is disclosed, including a pump head 10, a pressing unit, and a top valve 30. The pressing unit is disposed on the pump head 10. The top valve 30 is disposed on the pressing unit 20. The pressing unit 20 is used to drive the top valve 30 to move under the action of an external force. During the movement, the top valve 30 pushes the pump head 10 to move, so that the pump head 10 dispenses liquid. The position of the top valve 30 on the pressing unit 20 is adjustable. By adjusting the position of the top valve 30 on the pressing unit 20, the distance by which the pump head 10 is pushed to move is changed, thereby adjusting the liquid dispensing volume of the pump head 10.

[0029] In use, pressure is applied to the pressing unit 20, causing it to move the top valve 30 a fixed distance toward the pump head 10. During this movement, the top valve 30 presses against the pump head 10 and pushes the pump core 11 of the pump head 10 to move, thereby dispensing liquid from the pump head 10. When it is necessary to adjust the dispensing volume, the position of the top valve 30 on the pressing unit 20 is adjusted to increase or decrease the distance between the top valve 30 and the pump head 10. Since the distance that the pressing unit 20 moves the top valve 30 is fixed each time, when the distance between the top valve 30 and the pump head 10 changes, the distance that the top valve 30 pushes the pump core 11 of the pump head 10 to move also changes, thereby changing the dispensing volume.

[0030] The pump head assembly of the present invention, by setting a pressing unit 20 and a top valve 30, allows the pump head 10 to be moved a distance by adjusting the position of the top valve 30 on the pressing unit 20, thereby adjusting the liquid output of the pump head 10 and avoiding waste. Furthermore, since the pressing unit 20 moves the top valve 30 the same distance each time, i.e., the pressing stroke is the same each time, the feel during pressing is consistent, thus improving the user experience.

[0031] like Figure 1 and Figure 2As shown, the pressing unit 20 includes a knob sleeve 21 and a cylindrical top valve 30. The knob sleeve 21 is fitted onto the top valve 30, and part of the top valve 30 extends to the outside of the knob sleeve 21. The knob sleeve 21 is movable relative to the pump head 10. Under the action of external force, the knob sleeve 21 drives the top valve 30 to move toward the pump head 10. The top valve 30 abuts against the pump head 10 and pushes the pump head 10 to move. The position of the top valve 30 relative to the knob sleeve 21 is adjustable. By adjusting the position of the top valve 30 on the knob sleeve 21, the length of the part of the top valve 30 extending out of the knob sleeve 21 is changed, thereby changing the distance that the top valve 30 pushes the pump head 10 to move. The knob sleeve 21 is positioned opposite the pump core 11 of the pump head 10, with a certain gap between them. The knob sleeve 21 can be moved closer to or further away from the pump core 11. A portion of the top valve 30 is located inside the knob sleeve 21, while the other portion extends outside the knob sleeve 21, positioned between the knob sleeve 21 and the pump core 11. When the knob sleeve 21 moves closer to the pump core 11, the top valve 30 also moves with the knob sleeve 21 and abuts against the pump core 11, thus discharging liquid from the pump head 10. When the liquid flow rate needs to be adjusted, the position of the top valve 30 on the knob sleeve 21 can be adjusted, changing the length of the portion of the top valve 30 extending from the knob sleeve 21, allowing the top valve 30 to move closer to or further away from the pump core 11. This causes the top valve 30 to push the pump core 11 closer or further away, thereby changing the liquid flow rate.

[0032] like Figures 2 to 6 As shown, the pressing unit 20 also includes a knob 22, which is rotatably mounted on a knob sleeve 21. The knob 22 is driven by a top valve 30, and the knob 22 drives the top valve 30 to rotate. The length of the part of the top valve 30 extending out of the knob sleeve 21 is adjusted by rotating the knob 22. By using the knob 22, the knob sleeve 21, and the top valve 30 in cooperation, the length of the part of the top valve 30 extending out of the knob sleeve 21 can be adjusted by rotating the knob 22, making the adjustment process convenient and quick.

[0033] like Figure 5 and Figure 6As shown, the knob 22 includes a top cover 221 and a limiting sleeve 222. The top cover 221 is located outside the knob sleeve 21, and anti-slip ridges are provided on the outer periphery of the top cover 221. The limiting sleeve 222 is connected to the top cover 221 and is located inside the knob sleeve 21. The top valve 30 is located inside the limiting sleeve 222. A limiting groove 223 is provided on the limiting sleeve 222, and a limiting protrusion 31 is provided on the outer peripheral wall of the top valve 30. The limiting protrusion 31 is located inside the limiting sleeve 222, and the two ends of the limiting protrusion 31 are limited and engaged with the limiting groove 223 so that the top valve 30 rotates with the knob 22. At the same time, the top valve 30 can move in the direction of the rotation axis of the knob 22 to adjust the length of the part extending out of the knob sleeve 21. By setting a limiting sleeve 222, and through the limiting groove 223 on the limiting sleeve 222 cooperating with the limiting protrusion 31 of the top valve 30, while ensuring the circumferential limitation of the top valve 30, the top valve 30 can be moved along the axis of the knob 22 (which is also the axis of the top valve 30 itself), thereby realizing the adjustment of the length of the part extending out of the knob sleeve 21, and thus adjusting the distance of the pump core 11 to move, thereby realizing the adjustment of the liquid output.

[0034] like Figure 3 and Figure 4 As shown, the inner wall of the knob sleeve 21 is provided with an internal thread 211, and the limiting protrusion 31 is provided with an external thread 32 that matches the internal thread 211. By providing the external thread 32 on the limiting protrusion 31, when the top valve 30 rotates, the cooperation between the internal thread 211 and the external thread 32 causes the top valve 30 to move in its own axial direction, thereby adjusting the length of the part extending out of the knob sleeve 21, and further adjusting the distance that pushes the pump core 11 to move, thus adjusting the liquid output.

[0035] It should be noted that the circumferential length of the limiting protrusion 31 matches the circumferential width of the limiting groove 223, and the external thread 32 is a threaded segment provided on the limiting protrusion 31. The two ends of the threaded segment and the two ends of the limiting protrusion 31 respectively form two sets of limiting end faces, which are matched with the limiting groove 223 for limiting.

[0036] like Figure 6 and Figure 7 As shown, the limiting sleeve 222 is provided with a first positioning part 224, and the inner wall of the knob sleeve 21 is provided with a second positioning part 212. When the knob 22 rotates relative to the knob sleeve 21 to a preset position, the first positioning part 224 and the second positioning part 212 engage in a limiting cooperation to restrict the knob 22 from continuing to rotate. By setting the positioning parts, the knob 22 can be adjusted to a preset position, ensuring that the liquid dispensing volume is the same each time it is adjusted, thus improving the user experience.

[0037] It should be noted that there can be multiple second positioning units 212, thereby achieving multi-level adjustment and allowing for adjustment of the liquid output as needed. Specifically, when the pressing unit 20 is adjusted to position 0 (i.e., the off position) by knob 22, the portion of the adjusting top valve 30 extending out of the knob sleeve 21 is at its shortest. When the knob sleeve 21 moves the top valve 30 to its maximum stroke, the top valve 30 cannot reach the pump core 11 of the pump head 10, thus preventing accidental contact and waste. Besides position 0, the pressing unit 20 also has positions 1, 2, and 3. When the pressing unit 20 is adjusted to positions 1, 2, and 3 by knob 22, liquid can be dispensed by pressing the pressing unit 20, although the liquid output differs for each position. For example, in position 1, the portion of the top valve 30 extending beyond the knob sleeve 21 is slightly longer in position 0 than in positions 1 and 2. Therefore, when the knob sleeve 21 moves the top valve 30 to its maximum stroke, the top valve 30 can abut against the pump core 11 of the pump head 10 and push the pump core 11 to move. However, the distance the pump core 11 moves is relatively short, resulting in a smaller liquid output. When the pressing unit 20 is in positions 2 and 3, the moving distance of the pump core 11 increases sequentially, thus increasing the liquid output accordingly. Furthermore, because the adjusting knob is located at the top, and the numbers for each position are located on the outer surface of the knob sleeve, operation and reading are easier, and there is greater freedom and feasibility in production and appearance design.

[0038] The inner wall of the knob sleeve 21 is also provided with a sliding groove 213, which is arranged circumferentially along the inner wall of the knob sleeve 21. The outer periphery of the limiting sleeve 222 is provided with a limiting rib 225, which is located in the sliding groove 213, thereby realizing the axial limiting fit of the knob sleeve 21, while the knob sleeve 21 can rotate relative to it in the circumferential direction.

[0039] Preferably, the first positioning part 224 is a positioning bead, and the second positioning part 212 is a positioning hole that matches the positioning bead.

[0040] like Figure 8 Already and Figure 9 As shown, the pressing unit 20 further includes a mounting base 23, which is disposed on the pump head 10. The knob sleeve 21 is movably disposed on the mounting base 23. Preferably, the knob sleeve 21 is provided with a guide rail 26, and the mounting base 23 is provided with a guide sleeve 27. The guide rail 26 and the guide sleeve 27 cooperate to allow the knob sleeve 21 to be movably disposed on the mounting base 23. The guide rail 26 is provided with a return spring. When the external force disappears, the return spring can return the knob sleeve 21 to the starting position.

[0041] like Figure 10As shown, the pressing unit 20 also includes a housing 24, which is fitted over the mounting base 23. Both the mounting base 23 and the housing 24 are provided with clearance grooves 25, which correspond in position to each other. The outlet pipe of the pump head 10 extends from the clearance groove 25 to the outside of the housing 24. By providing the housing 24, the overall design can be made simpler and more aesthetically pleasing.

[0042] According to a second embodiment of the present invention, a liquid storage bottle is disclosed, including the pump head assembly described above.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A pump head assembly, characterized by The pump head (10) comprises: a pressing unit (20) arranged on the pump head (10); a top valve (30) arranged on the pressing unit (20), the pressing unit (20) being used to drive the top valve (30) to move under the action of an external force, the top valve (30) pushing the pump head (10) to move during the movement, and the pump head (10) discharging liquid; the position of the top valve (30) on the pressing unit (20) being adjustable, the top valve (30) changing the distance of pushing the pump head (10) to move by adjusting the position on the pressing unit (20), so as to adjust the discharging amount of the pump head (10); the pressing unit (20) comprising: a knob sleeve (21) sleeved on the top valve (30), part of the top valve (30) extending to the outside of the knob sleeve (21), the knob sleeve (21) being movable relative to the pump head (10), under the action of an external force, the knob sleeve (21) driving the top valve (30) to move towards the pump head (10), the top valve (30) abutting against the pump head (10) and pushing the pump head (10) to move; the position of the top valve (30) relative to the knob sleeve (21) being adjustable, the top valve (30) changing the length of the part extending out of the knob sleeve (21) by adjusting the position on the knob sleeve (21), so as to change the distance of pushing the pump head (10) to move; a knob (22) rotatably arranged on the knob sleeve (21), the knob (22) being drivingly connected with the top valve (30), the knob (22) being used to drive the top valve (30) to rotate, the top valve (30) changing the length of the part extending out of the knob sleeve (21) by rotating; a mounting seat (23) arranged on the pump head (10), the knob sleeve (21) being movably arranged on the mounting seat (23). The knob (22) comprises:

2. The pump head assembly of claim 1, wherein, a top cover (221) located outside the knob sleeve (21); a limiting sleeve (222) connected with the top cover (221), the limiting sleeve (222) being located in the knob sleeve (21), and the top valve (30) being arranged in the limiting sleeve (222); a limiting groove (223) being arranged on the limiting sleeve (222), and a limiting protrusion (31) being arranged on the outer peripheral wall of the top valve (30), the limiting protrusion (31) being located in the limiting sleeve (222), and the two ends of the limiting protrusion (31) being limitingly matched with the limiting groove (223), so that the top valve (30) rotates with the knob (22), and at the same time, the top valve (30) is movable in the direction of the rotation axis of the knob (22), so as to change the length of the part extending out of the knob sleeve (21).

3. The pump head assembly according to claim 2, wherein an inner thread (211) is arranged on the inner wall of the knob sleeve (21), and an outer thread (32) matched with the inner thread (211) is arranged on the limiting protrusion (31).

4. The pump head assembly according to claim 2, wherein ​ The limiting sleeve (222) is provided with a first positioning part (224), and the inner wall of the knob sleeve (21) is provided with a second positioning part (212), the first positioning part (224) and the second positioning part (212) limit and cooperate to limit the knob (22) from continuing to rotate when the knob (22) rotates relative to the knob sleeve (21) to a preset position.

5. The pump head assembly of claim 4, wherein, The first positioning part (224) is a positioning bead, and the second positioning part (212) is a positioning hole matched with the positioning bead.

6. The pump head assembly of claim 1, wherein, The pressing unit (20) further comprises: A shell (24) is sleeved outside the mounting seat (23), and the mounting seat (23) and the shell (24) are both provided with an avoiding groove (25), the avoiding groove (25) on the mounting seat (23) and the avoiding groove (25) on the shell (24) are in position correspondence, and a liquid outlet pipe of the pump head (10) extends from the avoiding groove (25) to outside the shell (24).

7. A liquid storage bottle characterized by comprising: A pump head assembly comprising any one of claims 1 to 6.

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