Sanitary pollution-preventing cosmetic trial liquid taking device

Abstract

This invention discloses a hygienic and pollution-proof cosmetic sample dispenser, comprising a receiving container consisting of a packaging box, a liquid bottle, a connector, a protective cap, and a cover plate. The receiving container contains multiple pumps adapted to the liquid bottle. Through the coordinated design of the packaging box, connector, pumps, protective cap, and cover plate, this invention allows for the categorized, centralized storage, and sealed protection of multiple liquid cosmetic samples, preventing dust and contamination and ensuring cleanliness and hygiene. Simultaneously, the protective cap integrates multiple sets of first and second arms in the center, with synchronous opening and closing actions achieved via a bevel gear assembly. This allows for clamping and positioning of pumps of different sizes, limiting the pump's pressing stroke and enabling precise control of the dispensed volume per use, avoiding excessive dispensing and effectively improving the user's cosmetic trial experience.

Description

Technical Field

[0001] This invention relates to the field of cosmetic testing equipment technology, specifically a hygienic and pollution-proof cosmetic testing liquid dispenser. Background Technology

[0002] In scenarios such as offline cosmetic stores, beauty product testing, and new product trials, the display and use of samples of liquid cosmetics (including foundation, serum, lotion, toner, etc.) are extremely common. To meet the demand for simultaneous testing of multiple categories of cosmetics, the industry generally uses containers such as dispensing bottles, simple press-pump bottles, and multi-compartment storage boxes to store samples for consumers to experience and use.

[0003] Traditional multi-category cosmetic samples are often stored in individual bottles, resulting in cluttered storage, large space consumption, and inconvenient store display management. Furthermore, the containers for storing cosmetic samples are directly exposed to the external environment, making them susceptible to contamination from dust, lint, and other contaminants. Additionally, due to their direct exposure, accidental activation of the pump on the container can cause it to press and dispense liquid, leading to unnecessary dispensing. In this case, the cosmetic sample delivered by the pump may be directly sprayed onto the container surface, causing contamination. Summary of the Invention

[0004] The purpose of this invention is to provide a hygienic and pollution-proof cosmetic sample dispenser, which solves the problems of messy storage, weak pollution prevention, uncontrollable liquid dispensing volume, and serious material waste in the existing technology.

[0005] The objective of this invention can be achieved through the following technical solutions: A hygienic and pollution-proof cosmetic sample dispenser includes a receiving container consisting of a packaging box, a connector, a protective cover, and a cover plate. The receiving container contains multiple press pumps. The protective cover contains a positioning mechanism, which includes a control column. A support is fixedly connected to the bottom surface of the control column. The support contains a first hollow block and a second hollow block arranged symmetrically. The outer walls of the first hollow block and the second hollow block have the same number of first and second arms. A pair of adjacent first and second arms form a positioning part. The arc-shaped inner end face of the positioning part is clamped to the outer wall of the press pump moving part 4c. The support is equipped with a bevel gear assembly consisting of a first bevel gear, a second bevel gear, and a transmission bevel gear. This bevel gear assembly is used to realize the opening and closing of the fixed point.

[0006] Preferably, the support consists of two parallel support plates, a central ring, and multiple uprights; the ring is located between the two support plates and is fixedly connected to the upper and lower support plates by multiple uprights arranged in a circular array to form a stable support frame; with the ring as the dividing line, the first hollow block is rotatably disposed in the upper region of the ring, and the second hollow block is rotatably disposed in the lower region of the ring.

[0007] Preferably, the second arm is located below the first arm, and the end of the second arm away from the second hollow block is integrally formed with an end block, the top surface of which is flush with the top surface of the first arm.

[0008] Preferably, a first bevel gear is fixed inside the first hollow block, and a second bevel gear is fixed inside the second hollow block. The first bevel gear and the second bevel gear are arranged coaxially. At least one transmission bevel gear is rotatably assembled on the inner wall of the ring, and the first bevel gear, the transmission bevel gear, and the second bevel gear mesh in sequence.

[0009] Preferably, the first bevel gear and the second bevel gear are fixedly connected to the corresponding hollow block by a central shaft. After the two central shafts pass outward through the hollow block, they are rotatably connected to the upper and lower support plates of the support through bearings, thus limiting the axial position of the transmission component. Limiting grooves are opened on the outer walls of the first hollow block and the second hollow block, and the upright of the support is embedded in the limiting groove.

[0010] Preferably, a locking assembly is provided at one end of the second bevel gear, the locking assembly including a threaded rod and a locking nut; a central shaft fixedly connected to the second bevel gear has a threaded rod coaxially fixed at one end extending to the lower part of the support, and a nut is threaded onto the outer wall of the threaded rod.

[0011] Preferably, a lifting mechanism is provided between the end of the control column away from the support and the protective cover. The lifting mechanism includes an upper guide frame and a lower guide frame. The upper guide frame is fixed at the center of the top surface of the protective cover, and the lower guide frame is fixed at the center of the inner top surface of the protective cover. The two are arranged coaxially to form a vertical guide channel.

[0012] Preferably, the outer wall of the control column is machined with liquid output scale lines along the axial direction, and a radial threaded hole is opened at the corresponding position of each liquid output scale line. A locking screw is rotatably assembled on the side wall of the upper guide frame, and one end of the locking screw is screwed into any threaded hole of the control column to lock and fix the height of the control column.

[0013] Preferably, the packaging box is a hollow cylindrical structure with an open top, and its inner bottom surface is provided with multiple liquid bottles, which respectively hold different types of liquid cosmetic samples. Multiple mounting heads are evenly arrayed and fixed on the top surface of the connector along the circumferential direction. The number of mounting heads is the same as the number of liquid bottles inside the packaging box, and each mounting head is coaxially aligned with the corresponding liquid bottle. The internal thread of the press pump connection part 4a is screwed and locked with the external thread of the mounting head.

[0014] Preferably, the protective cover has openings on the side wall corresponding to each mounting head, and a cover plate is hinged to one side of each opening via a miniature rotating shaft. A magnetic block is embedded in the inner wall of the free end of the cover plate away from the hinge point, and a magnetic attraction component is fitted on the side wall of the connector corresponding to each opening.

[0015] The beneficial effects of this invention are: 1. This invention, through the coordinated design of packaging box, connector, press pump, protective cover, and cover plate, can classify, centrally store, and seal multiple liquid cosmetic trial packs, preventing them from getting dusty or contaminated and ensuring their cleanliness and hygiene. Simultaneously, the protective cover integrates multiple sets of first and second arms in the middle, relying on a bevel gear assembly to achieve synchronous opening and closing of the two arms. This allows for clamping and positioning of press pump moving parts of different sizes, limiting the press pump's stroke and achieving precise control of the liquid volume dispensed per batch, avoiding excessive dispensing and effectively improving the user's cosmetic trial experience.

[0016] 2. The present invention, through the control column, upper guide frame, lower guide frame and locking screw, can adjust the vertical position of the first arm and the second arm inside the protective cover, so that the vertical position of the first arm and the second arm and the moving part 4c of the press pump changes, thereby adjusting the liquid volume at the press pump to meet the liquid volume requirements of different trial scenarios. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cover opening structure of the present invention; Figure 3 This is a cross-sectional view of the internal structure of the packaging box of this invention; Figure 4 This is a schematic diagram of the combined structure of the protective cover and connector of the present invention; Figure 5 This is a schematic diagram of the cooperative structure of the press pump and the positioning mechanism of the present invention; Figure 6 This is a schematic diagram of the fixed-point mechanism structure of the present invention; Figure 7 This is an exploded view of the support, first arm, and second arm structure of the present invention; Figure 8 This is the present invention. Figure 6 Enlarged view of the structure at point A in the middle; Figure 9 This is a cross-sectional view of the positioning mechanism of the present invention; Figure 10 This is a schematic diagram of the lifting mechanism of the present invention.

[0019] In the diagram: 1. Packaging box; 11. Liquid bottle; 2. Connector; 21. Threaded part; 22. Mounting head; 3. Protective cover; 31. Cover plate; 32. Magnetic block; 4. Press pump; 5. Positioning mechanism; 51. Control column; 52. Support; 521. Support plate; 522. Ring; 523. Upright pole; 53. First hollow block; 54. Second hollow block; 55. First support arm; 56. Second support arm; 561. End block; 57. First bevel gear; 58. Second bevel gear; 59. Transmission bevel gear; 6. Locking assembly; 61. Threaded rod; 62. Nut; 7. Limiting groove; 8. Lifting mechanism; 81. Upper guide frame; 82. Lower guide frame; 83. Locking screw; 84. Threaded hole. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] See Figures 1 to 10 As shown, a hygienic and pollution-proof cosmetic sample dispenser includes a receiving container consisting of a packaging box 1, a connector 2, a protective cap 3, and a cover plate 31, used for the classified centralized storage and sealed protection of multiple liquid cosmetic samples. See Figures 2 to 4 As shown, the packaging box 1 is a hollow cylindrical structure with an open top. Multiple liquid bottles 11 are located on its inner bottom surface, each holding different types of liquid cosmetic samples (such as foundation, serum, lotion, etc.). The inner wall of the packaging box 1's opening is machined with internal threads for assembly with the connector 2. The connector 2 is a ring-shaped support structure with an integrally extended threaded component 21 on its bottom surface. The external threads on the outer wall of the threaded component 21 are matched and screwed onto the internal threads on the inner wall of the packaging box 1's opening, achieving a detachable and fixed connection between the connector 2 and the packaging box 1. An annular sealing ring can be added to the top surface of the threaded component 21, which, when tightened, fits against the end face of the packaging box 1's opening, improving internal sealing and reducing liquid evaporation.

[0022] Multiple mounting heads 22 are evenly arrayed and fixed on the top surface of the connector 2 along the circumferential direction. The number of mounting heads 22 is the same as the number of liquid bottles 11 inside the packaging box 1, and each mounting head 22 is coaxially aligned with its corresponding liquid bottle 11 to ensure accurate pipeline alignment and smooth liquid dispensing. All mounting heads 22 have external threads machined on their outer walls for use with the press pump 4, enabling one pump per bottle and independent dispensing of a single product.

[0023] See Figures 4 to 5 As shown, each set of mounting heads 22 is independently equipped with a set of pressing pumps 4. The pressing pump 4 is composed of four parts: a connecting part 4a, a suction tube part 4b, a moving part 4c, and a pressing part 4d. The connecting part 4a and the suction tube part 4b integrate a built-in pump core structure (not shown in the attached figure). When assembling the pressing pump 4, the suction tube part 4b is vertically inserted into the central through hole of the mounting head 22, extending axially into the inside of the packaging box 1 and penetrating into the bottom area of ​​the corresponding liquid bottle 11 to ensure that the liquid in the liquid bottle 11 can be fully drawn until the connecting part 4a is completely fitted onto the outer wall of the mounting head 22. By rotating the connecting part 4a, the inner thread teeth of the connecting part 4a are screwed into the outer thread teeth of the mounting head 22 and locked, thus completing the quick sealing and fixing of the pressing pump 4.

[0024] The conventional liquid dispensing principle of the press pump 4 is as follows: When the user applies downward pressure to the pressing part 4d, the pressing part 4d drives the moving part 4c to contract inward into the pump core, squeezing the internal space of the pump chamber and creating a negative pressure difference in the pump chamber. The negative pressure of the suction tube part 4b draws the liquid inside the liquid bottle 11 and finally delivers the liquid to the liquid outlet at the end of the pressing part 4d, completing a single liquid dispensing operation. After the external pressing pressure is removed, the built-in pump core of the press pump 4 automatically and elastically resets, the pump chamber pressure returns to normal, and the liquid is returned to replenish the liquid, preparing for the next liquid dispensing. The cyclic dispensing is stable and reliable.

[0025] See Figure 2 As shown, a protective cover 3 is fixedly installed on the top surface of the connector 2. The protective cover 3 covers all the mounting heads 22 and the top area of ​​the pump 4, forming an overall dustproof protective base. Openings are made on the side wall of the protective cover 3 at the corresponding positions of each mounting head 22 to expose the pressing part, making it convenient for users to press and dispense liquid. An independent dustproof cover plate 31 is hinged to one side of each opening via a miniature rotating shaft, so that the cover plate 31 can be flipped open and closed. A special identification label is set on the outer surface of the cover plate 31, which can accurately mark the category name of the cosmetic sample at the corresponding position, so as to facilitate users to quickly identify and classify the sample, and avoid misuse.

[0026] To ensure the sealing and stability of the cover plate 31 after it is closed, a magnetic block 32 is embedded in the inner wall of the free end of the cover plate 31 away from the hinge point. At the same time, magnetic attraction components are embedded in the side wall of the connector 2 and at the corresponding positions of each opening. When the cover plate 31 is fully closed, it is locked and fixed by magnetic attraction, which can completely cover the liquid dispensing opening of the protective cover 3 and completely enclose the press pump 4 inside the protective cover 3, effectively isolating it from external dust, droplets, and moisture, and preventing the liquid outlet of the press part from being contaminated. To optimize the user experience, an integrated handle notch can be opened on the free end of the cover plate 31, allowing the cover plate 31 to be opened with one hand without auxiliary tools, making the operation convenient and efficient.

[0027] See Figures 4 to 9As shown, to achieve precise control of the liquid volume dispensed per operation and to accommodate pumps 4 of different diameters, a positioning mechanism 5 is installed inside the protective cover 3. This mechanism serves both radial clamping and axial travel limiting functions. The positioning mechanism 5 includes a control column 51, a support 52, a first hollow block 53, a second hollow block 54, a first support arm 55, a second support arm 56, and a bevel gear assembly. The entire assembly is coaxially arranged with the pump 4 at the center inside the protective cover 3. Specifically: The support 52 is fixed to the bottom surface of the control column 51 and consists of two parallel support plates 521, a middle ring 522 and multiple uprights 523. The ring 522 is located between the two support plates 521 and is fixedly connected to the upper and lower support plates 521 through multiple uprights 523 arranged in a circular array to form a stable support frame. Using ring 522 as a boundary, the upper region of ring 522 is rotatably fitted with a first hollow block 53, and the lower region of ring 522 is rotatably fitted with a second hollow block 54. Multiple arc-shaped first arms 55 are fixed along the circumferential array on the outer wall of the first hollow block 53, and the same number of arc-shaped second arms 56 are fixed along the circumferential array on the outer wall of the second hollow block 54. The second arms 56 are located directly below the first arms 55. A pair of adjacent first arms 55 and second arms 56 form a fixed point, with the arc-shaped inner end face of the fixed point facing the press pump 4 and able to abut against the outer wall of the moving part 4c.

[0028] See Figure 5 As shown, it should be noted that the diameter of the moving part 4c is smaller than the diameter of the pressing part 4d, and the top surface of the fixed part is the limiting reference surface. When the pressing part 4d is pressed down, it drives the moving part 4c to move down synchronously until the bottom surface of the pressing part 4d abuts against the top surface of the fixed part, and the downward stroke is forcibly blocked, thereby limiting the maximum liquid output of a single press and avoiding excessive liquid intake and waste.

[0029] See Figure 6 As shown, the second arm 56 has an integrally formed thickened end block 561 at the end away from the second hollow block 54. The top surface of the end block 561 is flush with the top surface of the first arm 55, so that the entire limiting top surface of the fixed point is on the same horizontal plane, increasing the contact area with the bottom surface of the pressing part.

[0030] See Figure 7 and Figure 9As shown, the synchronous opening and closing of all fixed parts is achieved through a bevel gear assembly to adapt to the moving parts of the press pump 4 with different diameters. The bevel gear assembly includes a first bevel gear 57, a second bevel gear 58, and a transmission bevel gear 59. The first bevel gear 57 is fixed inside the first hollow block 53, and the second bevel gear 58 is fixed inside the second hollow block 54. The first bevel gear 57 and the second bevel gear 58 are arranged coaxially. At least one transmission bevel gear 59 is rotatably assembled on the inner wall of the ring 522 (the transmission smoothness is better when two sets are arranged symmetrically). The first bevel gear 57, the transmission bevel gear 59, and the second bevel gear 58 mesh in sequence. When the second bevel gear 58 rotates in the forward direction, the first bevel gear 57 is driven to rotate synchronously in the reverse direction through the reversing transmission of the transmission bevel gear 59, so as to realize the coaxial reverse rotation of the first hollow block 53 and the second hollow block 54, thereby causing all the first support arms 55 and the second support arms 56 to clamp inward or open outward synchronously, and uniformly adjust the clamping inner diameter of all fixed parts to adapt to press pumps 4 of different specifications.

[0031] The first bevel gear 57 and the second bevel gear 58 are respectively fixedly connected to the corresponding hollow blocks via a central shaft. After the two central shafts pass outward through the hollow blocks, they are rotatably connected to the upper and lower support plates 521 of the support 52 via bearings, which limits the axial position of the transmission components. The outer walls of the first hollow block 53 and the second hollow block 54 are provided with limit grooves 7. The upright rod 523 of the support 52 is embedded in the limit grooves 7 to limit the maximum rotation angle of the hollow blocks and prevent the support arm from overtravel and causing structural jamming.

[0032] To prevent the first support arm 55 and the second support arm 56 from loosening or shifting after adjustment, a locking assembly 6 is provided at the drive end of the second bevel gear 58. The locking assembly 6 includes a threaded rod 61 and a locking nut 62. Specifically, a central shaft fixedly connected to the second bevel gear 58 has a threaded rod 61 coaxially fixed at one end extending to the lower part of the support 52; a nut 62 is threaded onto the outer wall of the threaded rod 61. During operation, loosening the nut 62 and rotating the threaded rod 61 will drive the second bevel gear 58 to rotate, completing the adjustment of the support arm opening degree; after adjustment, tightening the nut 62 will make the end face of the nut 62 tightly abut against the bottom surface of the support 52, realizing the circumferential locking of the threaded rod 61 and the support 52, thereby locking the entire bevel gear transmission assembly and the support arm position.

[0033] Specifically, by controlling the upward movement of the fixed point, the top surface of the end of the fixed point abuts against the top surface of the reset pressing part 4d, thereby locking the pressing part 4d of the pressing pump 4, preventing the pressing part 4d from moving downward, and preventing leakage from the pressing pump 4 when it is not in use.

[0034] See Figure 4 and Figure 10As shown, to adapt to the liquid dispensing requirements of different trial scenarios and achieve precise liquid adjustment at multiple levels, a lifting mechanism 8 is set up. This mechanism can adjust the installation height of the fixing mechanism 5 as a whole, changing the downward stroke limit reference, thereby changing the maximum downward stroke of the press pump 4 and achieving gradient adjustment of the liquid dispensing volume. The lifting mechanism 8 mainly consists of an upper guide frame 81, a lower guide frame 82, and a locking screw 83. Specifically: The upper guide frame 81 is fixed at the center of the top surface of the protective cover 3, and the lower guide frame 82 is fixed at the center of the inner top surface of the protective cover 3. The two are coaxially aligned to form a vertical guide channel. An axial limiting protrusion is integrally formed on the inner wall of the lower guide frame 82, and a matching axial groove is opened on the outer wall of the control column 51. The protrusion is locked inside the groove to achieve circumferential limiting of the control column 51, so that the control column 51 can only move up and down along the axial direction and cannot rotate circumferentially, thus avoiding the offset or misalignment of the fixed point mechanism 5 during the adjustment process. A limiting side block is fixed at the top of the control column 51. The outer diameter of the side block is precisely matched with the inner diameter of the upper guide frame 81 to form an upper limit structure, which can effectively prevent the control column 51 from falling out of the guide frame.

[0035] The outer wall of the control column 51 is machined with liquid output scale lines along the axial direction. The scale accuracy can be set to a gradient of 0.5 g / mL, or the scale interval can be customized according to actual production needs, intuitively displaying the liquid output parameters of each level. Each level has a corresponding radial threaded hole 84. The upper guide frame 81 is rotatably fitted with a locking screw 83. The threaded end of the locking screw 83 can be precisely screwed into any level threaded hole 84 of the control column 51 to lock and fix the height of the control column 51. During the adjustment process, the raising and lowering of the control column 51 can drive the entire bottom fixing mechanism 5 to move up and down synchronously, changing the initial vertical distance between the top surface of the fixing part and the bottom surface of the pressing part, directly adjusting the maximum downward stroke of the pressing pump 4, and realizing the switching of multiple liquid output levels. With the adjustment of the radial clamping diameter of the fixing mechanism 5, it can simultaneously adapt to different specifications of pressing pumps 4 and different quantitative liquid dispensing needs.

[0036] Working principle: S1: Filling and Assembly: Unscrew the connector 2 at the opening of the packaging box 1 to expose the individual liquid bottles 11 inside. Fill the liquid cosmetic samples of different types into the corresponding liquid bottles 11 to complete the sorting and loading. Then, align the connector 2 with the opening of the packaging box 1 and tighten it to ensure a tight seal. Manually lift the magnetic cover 31 of the protective cover 3 to expose the mounting heads 22. Screw the matching press pump 4 one by one onto the corresponding mounting head 22, ensuring that the straw is vertically inserted into the bottom of the liquid bottle 11 to complete the filling and assembly of the entire equipment. S2: Discharge rate adjustment: Loosen the locking screw 83 on the side wall of the upper guide frame 81, refer to the standard scale line on the outer wall of the control column 51, adjust the height of the control column 51 up and down according to the trial requirements, switch to the target discharge rate, tighten the locking screw 83 after adjustment, lock the position of the control column 51, and determine the maximum downward stroke of the press pump 4. S3: Clamping Limit Adjustment: Loosen the locking nut 62 on the outer side of the threaded rod 61 at the lower part of the support 52 to release the locking state of the bevel gear assembly; rotate the threaded rod 61 to drive the second bevel gear 58 to rotate, and through the reversing of the transmission bevel gear 59, synchronously drive the first bevel gear 57 to rotate, thereby completing the synchronous opening and closing adjustment of the upper and lower support arms, so that the arc-shaped inner wall of each fixed point part is tightly attached to the outer wall of the moving part 4c of the press pump 4, and is compatible with the specifications of the press pump 4; after adjustment, tighten the locking nut 62 to lock the bevel gear assembly and the position of multiple support arms; S4: Quantitative dispensing and sealed storage: During trial use, open the cover 31 of the corresponding product type and press down the pressing part of the press pump 4 at a uniform speed until the bottom surface of the pressing part 4d abuts against the top surface of the fixed point part, and the stroke ends, completing a single precise quantitative dispensing; after the pressing force is removed, the pump core in the press pump 4 automatically resets and replenishes the material; after use, loosen the cover 31, and it will automatically close and lock through magnetic attraction.

[0037] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A hygienic and pollution-proof cosmetic sample dispenser, comprising a receiving container consisting of a packaging box (1), a connector (2), a protective cover (3), and a cover plate (31), wherein the receiving container is provided with multiple press pumps (4). Its features are: The protective cover (3) is provided with a fixing mechanism (5). The fixing mechanism (5) includes a control column (51). The bottom surface of the control column (51) is fixedly connected to a support (52). The support (52) is provided with a first hollow block (53) and a second hollow block (54) arranged symmetrically in the upper and lower parts. The outer walls of the first hollow block (53) and the second hollow block (54) are provided with a first arm (55) and a second arm (56) of the same number. A set of adjacent first arms (55) and second arms (56) constitute a fixing part. The arc-shaped inner end face of the fixing part is clamped on the outer wall of the moving part 4c of the press pump (4). The support (52) is provided with a bevel gear assembly consisting of a first bevel gear (57), a second bevel gear (58) and a transmission bevel gear (59), which is used to realize the opening and closing of the fixed part.

2. The hygienic and pollution-proof cosmetic sample dispenser according to claim 1, characterized in that: The support (52) consists of two parallel support plates (521) on the top and bottom, a central ring (522) and multiple uprights (523). The ring (522) is located between the two support plates (521) and is fixedly connected to the upper and lower support plates (521) by multiple uprights (523) arranged in a circular array to form a stable support frame. With the ring (522) as the dividing line, the first hollow block (53) is rotatably set in the upper region of the ring (522), and the second hollow block (54) is rotatably set in the lower region of the ring (522).

3. The hygienic and pollution-proof cosmetic sample dispenser according to claim 2, characterized in that: The second arm (56) is located below the first arm (55). The end of the second arm (56) away from the second hollow block (54) is integrally formed with an end block (561), and the top surface of the end block (561) is flush with the top surface of the first arm (55).

4. The hygienic and pollution-proof cosmetic sample dispenser according to claim 1, characterized in that: The first hollow block (53) has a first bevel gear (57) fixed inside, and the second hollow block (54) has a second bevel gear (58) fixed inside. The first bevel gear (57) and the second bevel gear (58) are arranged coaxially. At least one transmission bevel gear (59) is rotatably assembled on the inner wall of the ring (522). The first bevel gear (57), the transmission bevel gear (59), and the second bevel gear (58) mesh in sequence.

5. A hygienic and pollution-proof cosmetic sample dispenser according to claim 4, characterized in that: The first bevel gear (57) and the second bevel gear (58) are respectively fixedly connected to the corresponding hollow block through a central shaft. After the two central shafts pass through the hollow block outward, they are rotatably connected to the upper and lower support plates (521) of the support (52) through bearings, which limits the axial position of the transmission component. The outer walls of the first hollow block (53) and the second hollow block (54) are provided with limit grooves (7), and the upright (523) of the support (52) is embedded in the limit groove (7).

6. The hygienic and pollution-proof cosmetic sample dispenser according to claim 4, characterized in that: A locking component (6) is provided at one end of the second bevel gear (58). The locking component (6) includes a threaded rod (61) and a locking nut (62). A central shaft fixedly connected to the second bevel gear (58) has a threaded rod (61) coaxially fixed at one end extending to the lower part of the support (52). A nut (62) is threaded onto the outer wall of the threaded rod (61).

7. A hygienic and pollution-proof cosmetic sample dispenser according to claim 1, characterized in that: A lifting mechanism (8) is provided between the end of the control column (51) away from the support (52) and the protective cover (3). The lifting mechanism (8) includes an upper guide frame (81) and a lower guide frame (82). The upper guide frame (81) is fixed at the center of the top surface of the protective cover (3), and the lower guide frame (82) is fixed at the center of the inner top surface of the protective cover (3). The two are arranged coaxially to form a vertical guide channel.

8. A hygienic and pollution-proof cosmetic sample dispenser according to claim 7, characterized in that: The outer wall of the control column (51) is machined with liquid output scale lines along the axial direction. Each liquid output scale line is provided with a radial threaded hole (84). The upper guide frame (81) is rotatably fitted with a locking screw (83). One end of the locking screw (83) is screwed into any threaded hole (84) of the control column (51) to lock and fix the height of the control column (51).

9. A hygienic and pollution-proof cosmetic sample dispenser according to claim 1, characterized in that: The packaging box (1) is a hollow cylindrical structure with an open top. Multiple liquid bottles (11) are provided on the bottom surface of the box, which respectively hold different types of liquid cosmetic samples. Multiple mounting heads (22) are evenly arrayed and fixed on the top surface of the connector (2) along the circumferential direction. The number of mounting heads (22) is the same as the number of liquid bottles (11) inside the packaging box (1), and each mounting head (22) is coaxially aligned with the corresponding liquid bottle (11). The internal thread of the connecting part 4a of the press pump (4) is screwed and locked with the external thread of the outer wall of the mounting head (22).

10. A hygienic and pollution-proof cosmetic sample dispenser according to claim 1, characterized in that: The protective cover (3) has openings on its side wall and at the corresponding positions of each mounting head (22). Each opening has a cover plate (31) hinged to one side by a miniature rotating shaft. The inner wall of the free end of the cover plate (31) away from the hinge point is fitted with a magnetic block (32). At the same time, a magnetic attraction component is fitted on the side wall of the connector (2) at the corresponding position of each opening.

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