Improved emulsion switch pump

Abstract

The application relates to an improved structure of a cream switch pump, which comprises a spiral ring, a pump core assembly, a head cap, a switch part and a locking part. The spiral ring comprises a large ring and a sleeve, the large ring is sleeved in the sleeve in a circumferential rotating mode and is used for locking connection with a container; the locking part comprises a locking block which can be matched with a push piece during the rotation of the sleeve and the switch part and is moved in a radial direction, the locking block is aligned with or staggered with the bottom of the head cap, thereby realizing the up and down limiting of the head cap or not. The spiral ring of the application adopts a matched structure of the sleeve and the large ring which can rotate relatively, and the switch part and the locking part are arranged in the sleeve and the large ring. After the large ring is installed with the container, the sleeve is rotated, the radial extrusion of the locking part by the switch part is realized, the alignment of the locking block with the lower end of the head cap is realized, thereby realizing the locking or unlocking of the head cap in the up and down direction. The reliability of the switch can be affected by the external force misoperation, the interference between the head cap and the pump core assembly is eliminated, and the operation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of lotion pumps, and in particular to an improved structure of a lotion switch pump. Background Art

[0002] Lotion bottles typically consist of a spray nozzle and a bottle body. Pressing the spray nozzle of a lotion pump causes liquid cream-like cosmetic lotion to flow out of the container. To prevent accidental release of liquid when not in use, a switch lock is often installed on the pump head.

[0003] For example, the Chinese patent "Locking Anti-leakage Lotion Pump" (application number: CN202120043672.6) with authorization announcement number CN214987286U discloses a structure in which the switch is in the shape of an "8", the inner diameter of the large through hole at one end of the opening is larger than the inner diameter of the small through hole at the other end, and an inwardly protruding transition edge is provided between the inner diameters of the large through hole and the small through hole of the opening. The small through hole of the switch is buckled with the outer diameter of the inner cap sleeve of the large circle. When the switch moves from the small through hole to the large through hole, the head cap is pressed, and the large through hole of the switch is buckled with the outer diameter of the outer cap opening of the head cap; at the same time, the small through hole of the switch is buckled with the small boss of the head cap. The above scheme can realize the locking of the head cap, but the switch structure is exposed outside the pump head, which not only affects the appearance, but also is prone to failure due to external force. The Chinese patent "Anti-loosening lotion bottle" (application number: CN202221915123.4) with authorization announcement number CN217674355U discloses a structure, which includes a press pump and a bottle body, and the bottle body is provided with a bottle mouth. The press pump includes a locking bottle cap for locking and fixing with the bottle mouth, the upper inner wall of the locking bottle cap is provided with an internal thread, and the lower inner wall of the locking bottle cap is evenly distributed with convex teeth, and a locking groove is formed between adjacent convex teeth. The upper part of the bottle mouth is provided with an external thread threadedly connected to the internal thread along the circumferential direction, and the bottle mouth is provided with a locking tooth that matches the locking groove. The locking tooth is embedded in the locking groove and is stuck by the front and rear convex teeth to prevent the locking bottle cap from loosening and rotating by itself. When the locking bottle cap is rotated by external force, the convex tooth can slide forward along the tooth surface of the locking tooth to tighten the locking bottle cap or slide backward to unscrew the locking bottle cap. The above solution has the lock structure built-in, which can avoid accidental contact with external force. However, since the switch structure needs to be operated by rotating the head cap, and the head cap is connected to the piston rod, the rotation process may cause the head cap and the piston ring to separate due to motion interference, affecting normal use.

[0004] Therefore, further improvements are needed to the switch structure of the current lotion pump. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide an improved structure of an emulsion switch pump with a built-in switch to improve switch reliability in view of the current status of the existing technology.

[0006] The second technical problem to be solved by the present invention is to provide an improved structure of an emulsion switch pump that can switch the switch state by rotating the spiral and eliminate motion interference in response to the current status of the existing technology.

[0007] The technical solution adopted by the present invention to solve at least one of the above technical problems is:

[0008] An improved structure of an emulsion switch pump, comprising:

[0009] The screw ring has an assembly opening on the top;

[0010] A pump core assembly is disposed below the spiral coil and has its top portion passing upward through the assembly opening;

[0011] A head cap is arranged to pass through the assembly opening and is connected to the upper end of the pump core assembly so as to be movable up and down;

[0012] The spiral coil includes a large coil and an outer sleeve. The large coil is rotatably sleeved in the outer sleeve and is used to be locked and connected to the container. A partition is provided in the middle of the large coil for the pump core assembly to pass through and is locked and connected to the container.

[0013] Also includes:

[0014] A switch member is sleeved on the outer periphery of the head cap and constrained on the outer jacket and rotates synchronously with the outer jacket, and the switch member is provided with a paddle extending downward and close to the inner wall of the large circle;

[0015] The locking part is arranged on the partition and includes a locking block that can cooperate with the paddle to move radially during the rotation of the outer sleeve and the switch part. The locking block is aligned or staggered with the bottom of the head cap in the upper and lower directions as it moves radially, thereby realizing the upper and lower limit of the head cap.

[0016] Preferably, the locking member includes an annular rib and at least two locking blocks spaced apart on the annular rib, the paddles are spaced apart on the outer periphery of the annular rib, and the minimum distance between the paddles and the annular rib is less than the thickness of the portion of the locking block outside the annular rib. With such a structure, as the switch member rotates, when the paddles and the locking block are offset, there is no contact between the paddles and the annular rib, and the annular rib and the locking block will not be subjected to radial forces and remain in place, that is, the locking block is arranged corresponding to the periphery of the head cap, and the bottom of the head cap is not blocked and can move up and down; the switch member continues to rotate, and when the paddles and the locking block gradually come into contact, the paddles squeeze the locking block to deform the annular rib and move the locking block radially inward until the locking block corresponds to the lower end of the head cap, and the bottom of the head cap is blocked and cannot move up and down, thereby limiting the head cap; the above-mentioned action can be achieved by rotating the outer sleeve, which is easy to operate.

[0017] Preferably, the outer peripheral wall of the locking block forms an arc surface that gradually arches outward along the rotation direction of the outer sleeve, and the downstream part of the arc surface is missing to form a bayonet that can engage with the rear end of the paddle when the locking block is squeezed inward by the paddle. This structure can provide guidance and buffering for the cooperation between the paddle and the locking block, improve the rotation stability, and when the outer sleeve is rotated to the state where the head cap is limited, the paddle is elastically squeezed outward in the radial direction by the locking block, and at the same time, the bayonet limits the rear end of the paddle, thereby improving the reliability of the head cap in the locked state; when it is necessary to cancel the limit on the head cap, the outer sleeve continues to rotate, and the paddle can be released by simply overcoming the radial deformation elastic force of the annular rib, which is labor-saving and convenient to operate.

[0018] Preferably, the thickness of the paddle gradually decreases along the rotation direction of the outer sleeve, and the distance between the inner wall of the paddle and the annular rib increases from the front end to the rear end. The front end of the paddle forms the initial end that first contacts the outer peripheral wall of the locking block as it rotates, and the rear end of the paddle forms the limiting end that can engage with the bayonet to limit the position. This structure further improves stability during rotation, saves effort, and is convenient.

[0019] Preferably, the upper surface of the partition is provided with limiting ribs for constraining the radial movement of the locking block to form a slideway, and at least two sets of limiting ribs are arranged at intervals in the circumferential direction of the partition to form the slideway. The above structure can limit the movement direction of the locking block to achieve precise locking and unlocking of the head cap.

[0020] Preferably, the annular rib is provided with a protrusion protruding radially outward, located between two adjacent locking blocks, and configured to compress and engage with the inner wall of the paddle as the switch rotates, thereby pushing the locking blocks radially outward through deformation. During the unlocking process, the outer sleeve is rotated, and when the paddle leaves the limiting notch of the locking block and continues to rotate, the inner wall of the paddle gradually presses the annular rib inward through the protrusion, causing the annular rib between the two adjacent locking blocks to deform inward. At this time, the locking blocks will expand outward until they are arranged on the outer periphery of the corresponding head cap, thereby achieving unlocking. The above structure ensures unlocking through direct mechanical drive, which improves reliability.

[0021] In order to facilitate assembly, the assembly opening is opened on the top wall of the outer shell, and the switch component includes a plug-in sleeve that is placed on the outer periphery of the head cap and is plugged and locked with the assembly opening of the outer shell. The lower end of the plug-in sleeve is provided with a supporting edge that rests on the inner top wall of the outer shell, and the paddle is provided on the lower surface of the supporting edge.

[0022] Preferably, the inner top wall of the outer sleeve is provided with a stopper opening communicating with the assembly opening, and the support edge is provided with a stopper block protruding from the upper portion thereof and capable of being engaged in the stopper opening to limit the circumferential movement of the switch member relative to the outer sleeve. This structure is conducive to improving the assembly reliability between the locking member and the outer sleeve.

[0023] Preferably, in the assembled state, the outer edge of the support edge is arranged corresponding to the inside of the large circle, and in the unlocked state, the lower surface of the support edge is arranged corresponding to the top of the locking block.

[0024] In the present invention, the inner top wall of the outer sleeve is provided with circumferentially arranged first latching teeth. Accordingly, the top of the large ring is provided with second latching teeth that engage with the first latching teeth after the large ring moves upward, thereby circumferentially retaining the outer sleeve and the large ring. The inner circumferential wall of the outer sleeve is provided with a circumferentially arranged raised ring near the bottom edge. Accordingly, the outer circumferential wall of the large ring is provided with a raised rib located above the raised ring and capable of cooperating with the raised ring to prevent the large ring from separating from the outer sleeve. The above structure is adopted to enable the head cap to be locked or not when the spiral coil rotates, and at the same time, to avoid interference between the rotation of the spiral coil and the container. Therefore, a structure is adopted that can make the outer sleeve and the large coil rotate synchronously in the circumferential direction when the large coil is installed, and allow the outer sleeve to rotate freely relative to the large coil after installation is completed; when the large coil needs to be connected to the container, the outer sleeve is pressed down so that the outer sleeve and the large coil are circumferentially limited and can rotate synchronously, thereby realizing the locking of the large coil and the container. After the large coil is connected to the container, when it is necessary to rotate the outer sleeve to control whether the head cap is locked or not, the outer sleeve is slightly lifted to cancel the circumferential limit between the outer sleeve and the large coil.

[0025] Compared with the prior art, the advantages of the present invention are that: the spiral coil of the present invention adopts a relatively rotatable outer sleeve and large sleeve matching structure, and is provided with a switch component and a locking component built into the outer sleeve and the large sleeve. After the large sleeve and the container are installed, the outer sleeve is rotated, and the locking block and the lower end of the head cap can be aligned or not by radially squeezing the locking component by the switch component, thereby locking or unlocking the head cap in the upper and lower directions. This not only avoids the influence of external force misoperation on the reliability of the switch, but also eliminates the interference between the head cap and the pump core assembly, making operation convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of Example 1 of the present invention;

[0027] Figure 2 for Figure 1 Cross-sectional view (longitudinal section);

[0028] Figure 3 for Figure 1 Exploded view of

[0029] Figure 4 for Figure 1 Cross-sectional view (cross section);

[0030] Figure 5 This is a cross-sectional view (transverse section) of Example 2 of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0032] Example 1:

[0033] like Figures 1 to 4 As shown, the improved structure of the lotion switch pump of this embodiment includes a coil 1, a pump core assembly 2, a cap 3, a switch member 4, and a locking member 5. The coil 1 has an assembly opening 111 at its top; the pump core assembly 2 is disposed below the coil 1 and extends upward through the assembly opening 111; the cap 3 is arranged to be movable vertically through the assembly opening 111 and is connected to the upper end of the pump core assembly 2.

[0034] In this embodiment, the spiral coil 1 includes a large coil 12 and an outer sleeve 11. The large coil 12 can be rotatably arranged in the outer sleeve 11 and is used to be locked and connected to the container (which can be a bottle body). A partition 121 is provided in the middle of the large coil 12 for the pump core assembly 2 to pass through and is locked and connected to it.

[0035] The switch component 4 is sleeved on the outer periphery of the head cap 3 and constrained on the outer sleeve 11 and rotates synchronously with the outer sleeve 11. The switch component 4 is provided with a paddle 41 extending downward and close to the inner wall of the large circle 12; the locking component 5 is provided on the partition 121, and includes a locking block 51 that can cooperate with the paddle 41 during the rotation of the outer sleeve 11 and the switch component 4 to move radially. The locking block 51 is aligned or staggered with the bottom of the head cap 3 in the upper and lower directions as it moves radially, thereby realizing the upper and lower limit of the head cap 3.

[0036] Specifically, the locking member 5 includes an annular rib 52 and at least two locking blocks 51 spaced apart from the rib 52. Two, three, four, or more locking blocks 51 can be provided as needed; in this embodiment, three are provided. Accordingly, there are three paddles 41 spaced apart around the periphery of the annular rib 52. The minimum distance between the paddles 41 and the annular rib 52 is less than the thickness of the locking blocks 51 located outside the annular rib 52. With such a structure, as the switch member 4 rotates, when the paddle 41 and the locking block 51 are offset, there is no contact between the paddle 41 and the annular rib 52, and the annular rib 52 and the locking block 51 will not be subjected to radial force and remain in place, that is, the locking block 51 is arranged corresponding to the outer periphery of the head cap 3, and the bottom of the head cap 3 is not blocked and can move up and down; the switch member 4 continues to rotate, and when the paddle 41 and the locking block 51 gradually come into contact, the paddle 41 squeezes the locking block 51 to deform the annular rib 52 and cause the locking block 51 to move radially inward until the locking block 51 corresponds to the lower end of the head cap 3, and the bottom of the head cap 3 is blocked and cannot move up and down, thereby realizing the limitation of the head cap 3; the above action can be achieved by rotating the outer sleeve 11, which is easy to operate.

[0037] The outer peripheral wall of the locking block 51 forms an arc surface 511 that gradually arches outward along the rotation direction of the outer sleeve 11. The downstream part of the arc surface 511 is missing to form a bayonet 512 that can be engaged with the rear end of the paddle 41 when the locking block 51 is squeezed inward by the paddle 41. This structure can provide guidance and buffering for the cooperation between the paddle 41 and the locking block 51, thereby improving the rotation stability. When the outer sleeve 11 is rotated to the state where the head cap 3 is limited, the paddle 41 is elastically squeezed outward in the radial direction by the locking block 51. At the same time, the bayonet 512 limits the rear end of the paddle 41, thereby improving the reliability of the head cap 3 in the locked state. When it is necessary to cancel the limit on the head cap 3, the outer sleeve 11 is continued to rotate. It is only necessary to overcome the radial deformation elastic force of the annular rib 52 to release the paddle 41. The operation is labor-saving and convenient.

[0038] The thickness of the paddle 41 gradually decreases along the rotation direction of the outer sleeve 11, and the distance between the inner wall of the paddle 41 and the annular rib 52 increases from the front end to the rear end. The front end of the paddle 41 forms an initial end 411 that first contacts the outer peripheral wall of the locking block 51 as it rotates, while the rear end of the paddle 41 forms a limiting end 412 that engages with the latch 512 for locking. This structure further improves stability during rotation, saves effort, and is convenient.

[0039] The upper surface of the partition 121 is provided with limiting ribs 123 for constraining the radial movement of the locking block 51 to form a slide 122. At least two groups of limiting ribs 123 are arranged at intervals in the circumferential direction of the partition 121 to form the slide 122. The above structure can limit the movement direction of the locking block 51 to achieve precise locking and unlocking of the head cap 3.

[0040] To facilitate assembly, an assembly opening 111 is provided on the top wall of the outer shell 11. The switch member 4 includes a plug-in sleeve 42 that is sleeved on the outer periphery of the head cap 3 and plugged and locked with the assembly opening 111 of the outer shell 11. The lower end of the plug-in sleeve 42 is provided with a support edge 43 that rests on the inner top wall of the outer shell 11, and the paddle 41 is provided on the lower surface of the support edge 43. The inner top wall of the outer shell 11 is provided with a limit opening 112 that communicates with the assembly opening 111. The support edge 43 is provided with a limit block 431 that can be locked in the limit opening 112 to limit the circumferential movement of the switch member 4 relative to the outer shell 11. When assembled, the outer edge of the support edge 43 is arranged corresponding to the inside of the large circle 12. When unlocked, the lower surface of the support edge 43 is arranged corresponding to the top of the locking block 51.

[0041] In this embodiment, the inner top wall of the outer sleeve 11 is provided with circumferentially arranged first latching teeth 113. Accordingly, the top of the large ring 12 is provided with second latching teeth 124 that engage with the first latching teeth 113 after the large ring 12 moves upward, thereby circumferentially limiting the outer sleeve 11 and the large ring 12. The inner circumferential wall of the outer sleeve 11 is provided with a circumferentially arranged raised ring 114 near the bottom edge. Accordingly, the outer circumferential wall of the large ring 12 is provided with a raised rib 125 located above the raised ring 114 and capable of cooperating with the raised ring 114 to prevent the large ring 12 from separating from the outer sleeve. The above structure is adopted to enable the head cap 3 to be locked or not when the coil 1 rotates, and at the same time, to avoid interference between the rotation of the coil 1 and the container. Therefore, a structure is adopted that can make the outer sleeve 11 and the large coil 12 rotate circumferentially synchronously when the large coil 12 is installed, and allow the outer sleeve 11 to rotate freely relative to the large coil 12 after installation is completed; when the large coil 12 needs to be connected to the container, the outer sleeve 11 is pressed down and rotated, so that the outer sleeve 11 and the large coil 12 are circumferentially limited and can rotate synchronously, thereby realizing the locking of the large coil 12 and the container. After the large coil 12 is connected to the container, when it is necessary to rotate the outer sleeve 11 to control whether the head cap 3 is locked or not, the outer sleeve 11 is slightly lifted to cancel the circumferential limit between the outer sleeve 11 and the large coil 12.

[0042] The spiral coil 1 of this embodiment adopts a structure in which an outer sleeve 11 and a large coil 12 can rotate relative to each other, and a switch member 4 and a locking member 5 are built into the outer sleeve 11 and the large coil 12. After the large coil 12 and the container are installed, the outer sleeve 11 is rotated, and the locking member 5 can be radially squeezed by the switch member 4 to achieve alignment of the locking block 51 with the lower end of the head cap 3, thereby locking or unlocking the head cap 3 in the upper and lower directions. This not only avoids the influence of external force misoperation on the reliability of the switch, but also eliminates the interference between the head cap 3 and the pump core assembly 2, making operation convenient.

[0043] Example 2:

[0044] The difference between this embodiment and embodiment 1 is that: Figure 5 As shown, the annular rib 52' is provided with a protrusion 521' protruding radially outward. The protrusion 521' is located between two adjacent locking blocks 51' and is used to squeeze and fit with the inner wall of the paddle 41' as the switch member 4' rotates, thereby pushing the locking block 51' radially outward through deformation.

[0045] During the unlocking process, the outer sleeve 11' is rotated. When the paddle 41' leaves the limiting notch 512' of the locking block 51' and continues to rotate, the inner wall of the paddle 41' gradually squeezes the annular rib 52' inward through the protrusion 521', causing the annular rib 52' between the two adjacent locking blocks 51' to deform inward. At this time, the locking block 51' will expand outward until it is arranged at the outer periphery of the corresponding head cap 3', and unlocking can be achieved. The above structure is adopted to ensure unlocking through direct mechanical drive, and the reliability is better.

[0046] After the above structure is provided, the height of the annular rib 52 ′ can be increased.

[0047] In the present specification and claims, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Because the embodiments disclosed herein can be arranged in various orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An improved structure of an emulsion switch pump, comprising: The screw ring has an assembly opening on the top; A pump core assembly is disposed below the spiral coil and has its top portion passing upward through the assembly opening; A head cap is arranged to pass through the assembly opening and is connected to the upper end of the pump core assembly so as to be movable up and down; The invention is characterized in that: the spiral coil comprises a large coil and an outer sleeve, the large coil is rotatably sleeved in the outer sleeve and is used to be locked and connected with the container, and a partition is provided in the middle of the large coil for the pump core assembly to pass through and be locked and connected with the container; Also includes: A switch member is sleeved on the outer periphery of the head cap and constrained on the outer jacket and rotates synchronously with the outer jacket, and the switch member is provided with a paddle extending downward and close to the inner wall of the large circle; The locking part is arranged on the partition and includes a locking block that can cooperate with the paddle to move radially during the rotation of the outer sleeve and the switch part. The locking block is aligned or staggered with the bottom of the head cap in the upper and lower directions as it moves radially, thereby realizing the upper and lower limit of the head cap.

2. The improved structure of the emulsion switch pump according to claim 1, characterized in that: The locking piece includes an annular rib and at least two locking blocks spaced apart on the annular rib. The paddles are spaced apart on the outer periphery of the annular rib. The minimum distance between the paddles and the annular rib is less than the thickness of the locking blocks outside the annular rib.

3. The improved structure of the emulsion switch pump according to claim 2, characterized in that: The outer peripheral wall of the locking block forms an arc surface that gradually arches outward along the rotation direction of the outer sleeve, and the downstream part of the arc surface is missing to form a slot that can be engaged with the rear end of the paddle when the locking block is squeezed inward by the paddle.

4. The improved structure of the emulsion switch pump according to claim 3, characterized in that: The thickness of the pick gradually becomes thinner along the rotation direction of the outer sleeve, and the distance between the inner wall surface of the pick and the annular rib increases from the front end to the rear end. The front end of the pick forms an initial end that first contacts the outer peripheral wall of the locking block as it rotates, and the rear end of the pick forms a limiting end that can be engaged with the bayonet to limit the position.

5. The improved structure of the emulsion switch pump according to claim 2, characterized in that: The upper surface of the partition is provided with limiting ribs for constraining the radial movement of the locking block to form a slideway, and at least two groups of limiting ribs are arranged at intervals in the circumferential direction of the partition to form the slideway.

6. The improved structure of the emulsion switch pump according to claim 2, characterized in that: The annular rib is provided with a protrusion protruding radially outward, and the protrusion is located between two adjacent locking blocks, and is used to squeeze and fit with the inner wall of the paddle as the switch rotates, thereby pushing the locking block radially outward through deformation.

7. The improved structure of the emulsion switch pump according to any one of claims 1 to 6, characterized in that: The assembly opening is opened on the top wall of the outer shell, and the switch component includes a plug-in sleeve that is placed on the outer periphery of the head cap and is plugged and locked with the assembly opening of the outer shell. The lower end of the plug-in sleeve is provided with a supporting edge that rests on the inner top wall of the outer shell, and the paddle is provided on the lower surface of the supporting edge.

8. The improved structure of the emulsion switch pump according to claim 7, characterized in that: The inner top wall of the outer sleeve is provided with a limiting opening connected to the assembly opening, and the support edge is convexly provided with a limiting block that can be clamped in the limiting opening to limit the circumferential movement of the switch component relative to the outer sleeve.

9. The improved structure of the emulsion switch pump according to claim 7, characterized in that: In the assembled state, the outer edge of the support edge is arranged corresponding to the inside of the large circle, and in the unlocked state, the lower surface of the support edge is arranged corresponding to the top of the locking block.

10. The improved structure of the emulsion switch pump according to any one of claims 1 to 6, characterized in that: The inner top wall of the outer sleeve is provided with first latching teeth arranged along the circumferential direction. Correspondingly, the top of the large circle is provided with second latching teeth that can engage with the first latching teeth after the large circle moves upward to limit the outer sleeve and the large circle in the circumferential direction.

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