A safety locking device for lotion pump

Abstract

The present invention relates to a safety locking device for a lotion pump, comprising a spiral ring, a pressing head, and a locking sleeve. The locking sleeve can be circumferentially rotatably sleeved on the outer periphery of a first assembly sleeve. The locking sleeve is a C-shaped structure. The inner wall of the locking sleeve and the outer wall of the first assembly sleeve are correspondingly provided with a matching structure that can make the C-shaped structure expand or reset in the radial direction. The locking sleeve of the present invention is very small in size and compactly matched with the lotion pump itself. When the lotion pump is not needed, the locking sleeve is rotated to be in an expanded state. The upper end surface of the locking sleeve is arranged corresponding to the lower end surface of the third assembly sleeve, which can prevent the pressing head from pressing downward. When the lotion pump is needed, the locking sleeve is rotated to be in a reset state. The upper end surface of the locking sleeve is arranged corresponding to the cavity inside the third assembly sleeve. At this time, the pressing head can be pressed downward. The entire locking and unlocking process is realized by the elastic deformation and reset of the locking sleeve itself, and the occurrence stroke is small, stable and reliable, and easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of lotion pumps, and in particular to a safety locking device for lotion pumps. Background Art

[0002] Lotion pumps are widely used. In order to prevent the head of the lotion pump from being accidentally pressed down and causing lotion leakage during transportation or in daily life, a locking structure that can lock or unlock the head is usually provided on the top of the lotion pump.

[0003] For example, the Chinese patent "Safety Clip for Lotion Pump" (application number: CN201110034451.3) with authorization announcement number CN102616478B discloses a structure, which includes: a first annular portion, the first annular portion having a notch and a first diameter; and a second annular portion, the second annular portion also having a notch and a second diameter, wherein the first annular portion and the second annular portion are mutually connected through their respective notch portions, and the first diameter of the first annular portion is smaller than the second diameter of the second annular portion. Using the above structure, when locking is required, the first annular portion with a smaller diameter is clamped under the push head, and when unlocking is required, the second annular portion with a larger diameter is placed under the push head. Although the above structure is relatively simple, the locking and unlocking process requires a relatively large force to be realized, which is inconvenient to use, and in the unlocked state, the clip will shake relative to the pump head, and there is a possibility of mistakenly clamping the push head, which will greatly affect the user experience. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a lotion pump safety locking device which is convenient for locking a push head and has good stability in the locked state in view of the current status of the prior art.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a lotion pump safety locking device, including a spiral coil and a pressing head, an opening and a first assembly sleeve extending upward around the opening are arranged on the top wall of the spiral coil, the pressing head is movably arranged on the spiral coil and has a second assembly sleeve that can be inserted into the first assembly sleeve, the pressing head is also provided with a third assembly sleeve arranged corresponding to the periphery of the first assembly sleeve, and also includes a locking sleeve that can be rotatably sleeved on the periphery of the first assembly sleeve, the locking sleeve is a C-shaped structure, and the inner wall of the locking sleeve and the outer wall of the first assembly sleeve are correspondingly provided with a matching structure that can make the C-shaped structure expand or reset in the radial direction;

[0006] When the C-shaped structure is in an expanded state, the upper end surface of the locking sleeve is arranged to correspond to the lower end surface of the third assembly sleeve to prevent the pressing head from pressing downward;

[0007] In the reset state of the C-shaped structure, the upper end surface of the locking sleeve is arranged corresponding to the cavity inside the third assembly sleeve to allow the pressing head to press downward.

[0008] In the present invention, a longitudinally extending first concave pit is arranged on the outer wall surface of the first assembly sleeve, and correspondingly, a convex portion that can match the depth of the first concave pit and thus be inserted into the first concave pit is arranged on the inner wall surface of the locking sleeve, and a second concave pit that is spaced apart from the first concave pit and has a smaller depth than the first concave pit is also arranged on the outer wall surface of the first assembly sleeve; the first concave pit, the second concave pit and the convex portion together constitute the matching structure;

[0009] When the locking sleeve is rotated until the convex portion is in a mating contact state with the second concave pit, the locking sleeve is in an expanded state;

[0010] When the locking sleeve is rotated until the convex portion is in a mating contact state with the first concave pit, the locking sleeve is in a reset state.

[0011] The locking sleeve of the present invention is made of plastic, and is easy to expand when squeezed and can automatically return to its original state when the external force is eliminated. When the lotion pump is not in use, the locking sleeve is rotated until the convex part abuts against the second pit. Since the size of the convex part is larger than the size of the second pit, the locking sleeve is squeezed by the inner wall of the second pit and expands radially. At this time, the expanded locking sleeve is arranged exactly corresponding to the lower end surface of the third assembly sleeve of the press head. When the press head is pressed downward, the locking sleeve abuts against the third assembly sleeve to prevent the press head from moving downward. When the lotion pump is used, the locking sleeve is rotated until the convex part abuts against the first pit. Since the size of the convex part matches the size of the first pit, the first pit is only used to accommodate the convex part and will not squeeze the convex part. The locking sleeve is in a reset state. At this time, the locking sleeve is arranged in the space between the second assembly sleeve and the third assembly sleeve of the press head, eliminating the limiting effect on the press head, and the press head can be pressed downward.

[0012] Preferably, the cross-sections of the first and second concave pits are both arc-shaped structures, and the edges on both sides of the arc-shaped structures are smoothly transitioned to the outer wall surface of the first assembly sleeve, and correspondingly, the convex part is an arc-shaped convex column smoothly transitioned to the inner wall surface of the locking sleeve with the edges on both sides. With this structure, consumers can save effort when turning the locking sleeve, while reducing the wear on the locking sleeve and the first assembly sleeve, thereby increasing the service life.

[0013] In order to improve the matching stability, there are at least two first pits and at least two second pits, and the first pits and the second pits are alternately arranged in the circumferential direction of the first assembly set.

[0014] Preferably, the thickness of the upper portion of the first assembly sleeve is smaller than that of the lower portion, a step surface is formed between the upper portion and the lower portion of the first assembly sleeve, the first pit and the second pit both extend downward from the step surface, and the deepest portion of the first pit is arranged close to the outer wall surface of the upper portion of the first assembly sleeve, and the depth of the second pit is 1 / 8 to 1 / 2 of the depth of the first pit. This structure limits the top of the locking sleeve and the first assembly sleeve, which is conducive to improving the compactness and stability of the fit.

[0015] Preferably, the top edge of the locking sleeve has a limiting ring extending inward and covering the step surface, and the top inner edge of the limiting ring is provided with a vertically extending arc-shaped guide rib; when the locking sleeve is in the expanded state, the arc-shaped guide rib forms a radial limit with the inner wall surface of the third assembly sleeve of the pressing head; when the locking sleeve is in the reset state, the arc-shaped guide rib forms a radial limit with the outer wall surface of the upper part of the first assembly sleeve. The above structure can ensure that the locking sleeve is exactly corresponding to the third assembly sleeve in the expanded state.

[0016] Further preferably, a sliding groove extending in the circumferential direction is provided on the outer wall surface of the lower end of the first assembly sleeve, and correspondingly, a convex clamp that can be locked in the sliding groove and reciprocate along the sliding groove is provided on the inner wall surface of the locking sleeve. This structure constrains the rotation stroke of the locking sleeve, which is convenient for locking or unlocking the push head; at the same time, the cooperation between the convex clamp and the sliding groove also constrains the bottom of the locking sleeve to the first assembly sleeve, and this structure cooperates with the above-mentioned limiting ring and step surface to form a limiting structure to prevent the locking sleeve from detaching from the first assembly sleeve.

[0017] In order to facilitate the operation of consumers, a toggle block is arranged on the outer peripheral wall of the locking sleeve.

[0018] The lotion pump of the present invention further comprises a pump core assembly for pumping liquid from bottom to top, wherein the pump core assembly is arranged in the spiral coil and has a guide channel arranged corresponding to the first assembly set and the second assembly set.

[0019] Compared with the prior art, the advantages of the present invention are: the locking sleeve of the present invention is very small in size and fits tightly with the lotion pump itself. When the lotion pump is not needed, the locking sleeve is rotated to be in an expanded state, and the upper end surface of the locking sleeve is arranged corresponding to the lower end surface of the third assembly sleeve, which can prevent the pressing head from pressing downward. When the lotion pump is needed, the locking sleeve is rotated to be in a reset state, and the upper end surface of the locking sleeve is arranged corresponding to the cavity inside the third assembly sleeve. At this time, the pressing head can be pressed downward. The entire locking and unlocking process is achieved through the elastic deformation and reset of the locking sleeve itself, with a small stroke, stable and reliable, and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2 for Figure 1 Cross-sectional view (button head is not restricted);

[0022] Figure 3 A cross-sectional view of an embodiment of the present invention (the push head is not restricted);

[0023] Figure 4 Another cross-sectional view of an embodiment of the present invention (the button head is in a restricted position state);

[0024] Figure 5 The matching structure of the convex card and the slide groove in the embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the spiral coil in an embodiment of the present invention;

[0026] Figure 7 for Figure 6 A top view of

[0027] Figure 8 Schematic diagram of the structure of the locking sleeve in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings.

[0029] like Figures 1 to 8 As shown, the lotion pump safety locking device of this embodiment includes a spiral coil 1, a pressing head 2, and a locking sleeve 3. The top wall of the spiral coil 1 is provided with an opening 11 and a first assembly sleeve 12 extending upward around the opening 11. The pressing head 2 is movably disposed on the spiral coil 1 and has a second assembly sleeve 21 that can be inserted into the first assembly sleeve 12. The pressing head 2 is also provided with a third assembly sleeve 22 arranged corresponding to the periphery of the first assembly sleeve 12.

[0030] The locking sleeve 3 can be rotatably sleeved on the outer periphery of the first assembly sleeve 12 in the circumferential direction. The locking sleeve 3 is a C-shaped structure. The inner wall of the locking sleeve 3 and the outer wall of the first assembly sleeve 12 are correspondingly provided with a matching structure that can make the C-shaped structure expand or reset in the radial direction. In the expanded state of the C-shaped structure, the upper end surface of the locking sleeve 3 is arranged corresponding to the lower end surface of the third assembly sleeve 22 to prevent the pressing head 2 from pressing downward. In the reset state of the C-shaped structure, the upper end surface of the locking sleeve 3 is arranged corresponding to the cavity inside the third assembly sleeve 22 to allow the pressing head 2 to press downward.

[0031] In this embodiment, a longitudinally extending first concave pit 121 is provided on the outer wall surface of the first assembly sleeve 12, and correspondingly, a convex portion 31 is provided on the inner wall surface of the locking sleeve 3, which can match the depth of the first concave pit 121 and thus be inserted into the first concave pit 121. A second concave pit 122 is also provided on the outer wall surface of the first assembly sleeve 12, which is spaced apart from the first concave pit 121 and has a depth less than that of the first concave pit 121; the first concave pit 121, the second concave pit 122 and the convex portion 31 together constitute the above-mentioned matching structure. When the locking sleeve 3 rotates to the state where the convex portion 31 is in a matching contact state with the second concave pit 122, the locking sleeve 3 is in an expanded state; when the locking sleeve 3 rotates to the state where the convex portion 31 is in a matching contact state with the first concave pit 121, the locking sleeve 3 is in a reset state.

[0032] The locking sleeve 3 of this embodiment is made of plastic, which is easy to expand when squeezed and can automatically return to its original state when the external force is removed.

[0033] The cross-sections of the first concave pit 121 and the second concave pit 122 are both arc-shaped structures, and the edges on both sides of the arc-shaped structures are smoothly transitioned to the outer wall surface of the first assembly sleeve 12. Correspondingly, the convex part 31 is an arc-shaped convex column smoothly transitioned to the inner wall surface of the locking sleeve 3 with the edges on both sides. With this structure, consumers can save effort when rotating the locking sleeve 3, and at the same time reduce the wear of the locking sleeve 3 and the first assembly sleeve 12, thereby increasing the service life.

[0034] In order to improve the matching stability, in this embodiment, there are two first pits 121 and two second pits 122 , and the first pits 121 and the second pits 122 are alternately arranged in the circumferential direction of the first assembly sleeve 12 .

[0035] In this embodiment, the thickness of the upper portion 12a of the first assembly sleeve 12 is less than the thickness of the lower portion 12b, and a step surface 120 is formed between the upper portion 12a and the lower portion 12b of the first assembly sleeve 12. The first pit 121 and the second pit 122 both extend downward from the step surface 120, and the deepest part of the first pit 121 is arranged close to the outer wall surface of the upper portion 12a of the first assembly sleeve 12, and the depth of the second pit 122 is 1 / 8 to 1 / 2 of the depth of the first pit 121. This structure limits the top of the locking sleeve 3 and the first assembly sleeve 12, which is conducive to improving the compactness and stability of the fit.

[0036] The top edge of the locking sleeve 3 has a limit ring 32 extending inward and covering the step surface 120, and a vertically extending arc-shaped guide rib 33 is provided at the top inner edge of the limit ring 32; when the locking sleeve 3 is in the expanded state, the arc-shaped guide rib 33 forms a radial limit with the inner wall surface of the third assembly sleeve 22 of the pressing head 2, that is, to avoid the expansion transition and being located outside the third assembly sleeve 22, so as to ensure that the upper end of the locking sleeve 3 in the expanded state is arranged corresponding to the lower end of the third assembly sleeve 22. When the locking sleeve 3 is in the reset state, the arc-shaped guide rib 33 forms a radial limit with the outer wall surface of the upper part 12a of the first assembly sleeve 12, so as to avoid the protrusion 31 and the first pit 121 from being too compact, so as to facilitate consumers to switch the state of the locking sleeve 3.

[0037] The outer wall surface of the lower end of the first assembly sleeve 12 of this embodiment is provided with a circumferentially extending slide groove 123, and correspondingly, the inner wall surface of the locking sleeve 3 is provided with a convex clamp 34 that can be locked in the slide groove 123 and reciprocate along the slide groove 123, and the width of the convex clamp 34 is much smaller than the length of the slide groove 123. This structure constrains the rotation stroke of the locking sleeve 3, which is convenient for locking or unlocking the push head 2; at the same time, the cooperation of the convex clamp 34 and the slide groove 123 also constrains the bottom of the locking sleeve 3 on the first assembly sleeve 12, and this structure cooperates with the above-mentioned limiting ring 32 and the step surface 120 to form a limiting structure to prevent the locking sleeve 3 from being separated from the first assembly sleeve 12.

[0038] In order to facilitate the operation of the consumer, a toggle block 35 is provided on the outer peripheral wall of the locking sleeve 3 .

[0039] When the lotion pump is not in use, the locking sleeve 3 is rotated until the convex portion 31 abuts against the second concave pit 122. Since the size of the convex portion 31 is larger than that of the second concave pit 122, the locking sleeve 3 is squeezed by the inner wall of the second concave pit 122 and expands radially. At this time, the expanded locking sleeve 3 is arranged just corresponding to the lower end surface of the third assembly sleeve 22 of the pressing head 2. When the pressing head 2 is pressed downward, the locking sleeve 3 abuts against the third assembly sleeve 22 to prevent the pressing head 2 from moving downward. When the lotion pump is used, the locking sleeve 3 is rotated until the convex portion 31 abuts against the first concave pit 121. Since the size of the convex portion 31 matches that of the first concave pit 121, the first concave pit 121 is only used to accommodate the convex portion 31 without squeezing the convex portion 31, and the locking sleeve 3 is in a reset state. At this time, the locking sleeve 3 is arranged corresponding to the space between the second assembly sleeve 21 and the third assembly sleeve 22 of the pressing head 2, eliminating the limiting effect on the pressing head 2, and the pressing head 2 can be pressed downward. The locking sleeve 3 of this embodiment is very small in size and fits tightly with the lotion pump. The entire locking and unlocking process is achieved through the elastic deformation and resetting of the locking sleeve 3 itself, with a small stroke, stable and reliable, and easy operation.

[0040] The lotion pump of this embodiment further comprises a pump core assembly 5 for pumping liquid from bottom to top. The pump core assembly 5 is arranged in the spiral ring 1 and has a guide channel 51 arranged corresponding to the first assembly sleeve 12 and the second assembly sleeve 21 .

[0041] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A lotion pump safety locking device, comprising a spiral coil and a pressing head, wherein an opening is arranged on the top wall of the spiral coil and a first assembly sleeve extending upward around the opening, the pressing head is arranged on the spiral coil so as to be movable up and down and has a second assembly sleeve that can be inserted into the first assembly sleeve, and the pressing head is also provided with a third assembly sleeve arranged corresponding to the periphery of the first assembly sleeve, characterized in that: It also includes a locking sleeve that can be circumferentially rotatably sleeved on the outer periphery of the first assembly sleeve, the locking sleeve is a C-shaped structure, and the inner wall of the locking sleeve and the outer wall of the first assembly sleeve are correspondingly provided with a matching structure that can make the C-shaped structure expand or reset in the radial direction; When the C-shaped structure is in an expanded state, the upper end surface of the locking sleeve is arranged to correspond to the lower end surface of the third assembly sleeve to prevent the pressing head from pressing downward; In the reset state of the C-shaped structure, the upper end surface of the locking sleeve is arranged corresponding to the cavity inside the third assembly sleeve to allow the pressing head to press downward; A longitudinally extending first concave pit is arranged on the outer wall surface of the first assembly sleeve, and correspondingly, a convex portion that can match the depth of the first concave pit so as to be inserted into the first concave pit is arranged on the inner wall surface of the locking sleeve, and a second concave pit that is spaced apart from the first concave pit and has a smaller depth than the first concave pit is also arranged on the outer wall surface of the first assembly sleeve; the first concave pit, the second concave pit and the convex portion together constitute the matching structure; When the locking sleeve is rotated until the convex portion is in a mating contact state with the second concave pit, the locking sleeve is in an expanded state; When the locking sleeve rotates until the convex portion is in a mating contact state with the first concave pit, the locking sleeve is in a reset state; The cross sections of the first pit and the second pit are both arc-shaped structures; there are at least two first pits and at least two second pits.

2. The lotion pump safety locking device according to claim 1, characterized in that: Both side edges of the arc-shaped structure are smoothly connected to the outer wall surface of the first assembly sleeve, and correspondingly, the convex portion is an arc-shaped convex column smoothly connected to the two side edges and the inner wall surface of the locking sleeve.

3. The lotion pump safety locking device according to claim 1, characterized in that: The first recesses and the second recesses are alternately arranged in a circumferential direction of the first assembly sleeve.

4. The lotion pump safety locking device according to claim 1, characterized in that: The thickness of the upper part of the first assembly sleeve is smaller than that of the lower part, and a step surface is formed between the upper part and the lower part of the first assembly sleeve. The first pit and the second pit both extend downward from the step surface, and the deepest part of the first pit is arranged close to the outer wall surface of the upper part of the first assembly sleeve, and the depth of the second pit is 1 / 8 to 1 / 2 of the depth of the first pit.

5. The lotion pump safety locking device according to claim 4, characterized in that: The top edge of the locking sleeve has a limiting ring extending inwardly and covering the step surface, and the top inner edge of the limiting ring is provided with a vertically extending arc-shaped guide rib; When the locking sleeve is in an expanded state, the arc-shaped guide rib and the inner wall surface of the third assembly sleeve of the pressing head form a radial limit; When the locking sleeve is in the reset state, the arc-shaped guide rib and the outer wall surface of the upper portion of the first assembly sleeve form a radial limit.

6. The lotion pump safety locking device according to claim 5, characterized in that: A sliding groove extending in the circumferential direction is provided on the outer wall surface of the lower end of the first assembly sleeve, and correspondingly, a convex clamp which can be clamped in the sliding groove and reciprocate along the sliding groove is provided on the inner wall surface of the locking sleeve.

7. The lotion pump safety locking device according to any one of claims 1 to 6, characterized in that: A toggle block is arranged on the outer peripheral wall of the locking sleeve.

8. The lotion pump safety locking device according to any one of claims 1 to 6, characterized in that: It also includes a pump core assembly for pumping liquid from bottom to top. The pump core assembly is arranged in the spiral coil and has a guide channel arranged corresponding to the first assembly set and the second assembly set.

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