Cosmetic brush capable of switching loose powder types

Abstract

The utility model discloses a cosmetic brush capable of switching loose powder types, which comprises a bottle body, at least two mutually independent powder bins are circumferentially distributed in the bottle body around the central axis of the bottle body, the upper part of the bottle body is provided with discharge ports which are communicated with the powder bins in a one-to-one correspondence manner, and the discharge ports are communicated with the powder bins in a one-to-one correspondence manner. The upper portion of the bottle body is movably connected with a brush head capable of rotating around the central axis of the bottle body, the brush head is provided with a powder outlet channel and bristles located at the output end of the powder outlet channel, and the brush head rotates relative to the bottle body so that the input end of the powder outlet channel can only communicate with one of the discharging ports. According to the cosmetic brush with the structure, when the types of the loose powder need to be replaced, the brush head only needs to be driven to rotate relative to the bottle body, and the input end of the powder outlet channel can be switched to be communicated with the discharging port of the other powder bin, so that the types of the loose powder are replaced, and the cosmetic efficiency and the use experience feeling are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cosmetics, in particular to a cosmetic brush capable of switching the types of loose powder. Background Art

[0002] In the makeup industry, makeup brushes for applying loose powder are a common type of cosmetics. The loose powder particles attached to the bristles are transferred to the skin during the application process. Depending on the desired makeup effect, the color and particle size of the loose powder need to change accordingly. However, each loose powder brush can only supply one type of loose powder, and users can only equip multiple loose powder brushes to meet their makeup needs. Especially for loose powders of multiple similar colors in the same color system, users need to find makeup brushes with different types of loose powder one by one, which is not conducive to improving makeup efficiency and has a poor user experience. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a makeup brush with switchable loose powder types, which is integrated with at least two loose powders. By rotating to switch the loose powder types, it is beneficial to improve makeup efficiency and user experience.

[0004] According to an embodiment of the utility model, a makeup brush with switchable loose powder types includes: a bottle body, at least two independent powder bins are distributed in a circle around the central axis of the bottle body, the upper part of the bottle body is provided with a discharge port connected to the powder bins in a one-to-one correspondence, the upper part of the bottle body is movably connected with a brush head that can rotate around the central axis of the bottle body, the brush head is provided with a powder discharge channel and bristles located at the output end of the powder discharge channel, and the brush head is rotated relative to the bottle body so that the input end of the powder discharge channel is only connected to one of the discharge ports.

[0005] The makeup brush capable of switching the type of loose powder according to the embodiment of the utility model has at least the following beneficial effects:

[0006] When the type of loose powder of the makeup brush with the above structure needs to be changed, it is only necessary to drive the brush head to rotate relative to the bottle body, and the input end of the powder outlet channel can be switched to connect with the outlet of another powder bin, thereby realizing the change of loose powder type, which is beneficial to improving makeup efficiency and user experience.

[0007] In some embodiments of the utility model, the brush head is provided with a limiting ring coaxial with the central axis of the bottle body, and the upper part of the bottle body is provided with a plurality of limiting hooks extending upward to abut against the upper end surface of the limiting ring, and when the brush head rotates relative to the bottle body, the limiting hooks move along the upper end surface of the limiting ring to prevent the brush head and the bottle body from separating.

[0008] In some embodiments of the utility model, one of the bottle body and the brush head is provided with a circle of circular guide grooves coaxial with the limiting circular ring, and the other is provided with a circular protrusion matching with the circular guide groove, the limiting hook comprises an elastic connecting arm extending upward and a hook portion formed at the upper end of the elastic connecting arm, the lower end face of the limiting circular ring is inclined inward from bottom to top, and the hook portion has an assembly inclined surface matching with the lower end face of the limiting circular ring.

[0009] In some embodiments of the present invention, an angle positioning mechanism is provided between the bottle body and the brush head, and the angle positioning mechanism is used to keep the input end of the powder outlet channel connected to the corresponding outlet.

[0010] In some embodiments of the utility model, the brush head is provided with a circle of limiting rings coaxial with the central axis of the bottle body, and the upper part of the bottle body is provided with limiting hooks whose number is consistent with the powder bin, and the limiting hooks include an elastic connecting arm extending upward and a hook portion formed at the upper end of the elastic connecting arm to abut against the upper end surface of the limiting ring, and the angle positioning mechanism includes a plurality of positioning grooves formed on the inner circumferential wall of the limiting ring and a plurality of positioning protrusions formed on the outer circumferential wall of the elastic connecting arm and corresponding to the positioning grooves one by one, and when the input end of the powder outlet channel is connected to any of the outlet ports, each of the positioning protrusions is combined with the corresponding positioning groove.

[0011] In some embodiments of the utility model, the brush head includes a mounting seat and a bracket, the bristles and the powder outlet channel are both arranged on the bracket, and the bracket is threadedly connected to the mounting seat.

[0012] In some embodiments of the utility model, the powder outlet channel includes a powder storage pipe and a powder discharge pipe connected to the upper end of the powder storage pipe, the powder discharge pipe and the powder storage pipe are both vertically arranged in the center of the brush head, and the inner diameter of the powder discharge pipe is smaller than the inner diameter of the powder storage pipe, the bristles are arranged on the outside of the powder discharge pipe, and the brush head is provided with a feeding port at the side edge of the lower end of the powder storage pipe, and the brush head rotates relative to the bottle body so that one of its discharge ports is connected to the powder storage pipe.

[0013] In some embodiments of the present invention, three radially distributed partitions are provided inside the bottle body, the central axis of the bottle body is located at the intersection of the three partitions, the powder bin is located between two adjacent partitions, the discharge port is a fan-shaped through hole located between two adjacent partitions, the feed port can be stacked directly above the discharge port and is consistent with the shape and size of the discharge port, and the vertex of the fan-shaped through hole points to the central axis of the bottle body.

[0014] In some embodiments of the utility model, the bottle body includes a sleeve with an opening at the lower end and a bottom cover threadedly connected to the opening of the sleeve, the partition is formed inside the sleeve, the discharge port passes through the top wall of the sleeve, a cushion block is provided between the bottom cover and the lower end opening of the sleeve, the cushion block is provided with three embedding slots for respectively inserting the lower ends of the partitions, and the cushion block is provided with a sealing plug extending into the powder bin between adjacent embedding slots.

[0015] In some embodiments of the utility model, the bottle body is telescopically provided with a middle bundle movably mounted on the outside of the brush head along its length direction, and the middle bundle is lifted and lowered relative to the brush head to gather or unfold the bristles, and the middle bundle is buckled and connected to a cap body that accommodates the bristles and the brush head.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a cross-sectional schematic diagram of an embodiment of a makeup brush capable of switching the type of loose powder of the present utility model;

[0019] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A;

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the bottle body of the embodiment;

[0021] Figure 4 A schematic structural diagram of an embodiment of a mounting base;

[0022] Figure 5 It is a structural schematic diagram of an embodiment of a sleeve.

[0023] Reference numerals:

[0024] Bottle body 100; powder bin 101; sleeve 110; bottom cover 120; discharge port 111; annular protrusion 112; cushion block 130; embedded slot 131; sealing plug 132; partition 140; brush head 200; bristles 201; mounting seat 210; annular guide groove 211; bracket 220; powder discharge channel 300; powder storage pipe 310; powder discharge pipe 320; feed port 330; limiting hook 400; limiting ring 500; elastic connecting arm 410; hook 420; assembly slope 421; positioning groove 610; positioning protrusion 620; middle beam 700; cap body 800. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1 and Figure 2The utility model is a makeup brush with switchable loose powder types, comprising: a bottle body 100, at least two independent powder bins 101 are distributed circumferentially around the central axis of the bottle body 100, the upper part of the bottle body 100 is provided with a discharge port 111 connected with the powder bins 101 in a one-to-one correspondence, the upper part of the bottle body 100 is movably connected with a brush head 200 that can rotate around the central axis of the bottle body 100, the brush head 200 is provided with a powder discharge channel 300 and bristles 201 located at the output end of the powder discharge channel 300, and the brush head 200 rotates relative to the bottle body 100 so that the input end of the powder discharge channel 300 is only connected to one of the discharge ports 111.

[0030] When the makeup brush of the above structure needs to change the type of loose powder, it is only necessary to drive the brush head 200 to rotate relative to the bottle body 100, and the input end of the powder outlet channel 300 can be switched to communicate with the outlet 111 of another powder bin 101, thereby changing the type of loose powder, which is beneficial to improving makeup efficiency and user experience. The user can configure the number of powder bins 101 according to specific needs and choose to put the required type of loose powder into the corresponding powder bin 101.

[0031] See also Figure 1 and Figure 2 In some embodiments of the utility model, the brush head 200 is provided with a circle of limiting rings 500 coaxial with the central axis of the bottle body 100, and the upper part of the bottle body 100 is provided with a plurality of limiting hooks 400 extending upward to abut against the upper end surface of the limiting ring 500. When the brush head 200 rotates relative to the bottle body 100, the limiting hooks 400 move along the upper end surface of the limiting ring 500 to prevent the brush head 200 and the bottle body 100 from separating. It can be understood that the cooperation between the limiting hooks 400 and the limiting rings 500 not only realizes the rotation connection between the brush head 200 and the bottle body 100, but also reserves the space and position for the brush head 200 and the bottle body 100 to set the above-mentioned powder outlet channel 300 and the outlet 111 in the middle part, which helps to improve the compactness of the makeup brush structure while satisfying the function of switching the type of loose powder by rotation.

[0032] See also Figure 2In some embodiments of the utility model, in order to further improve the reliability of the brush head 200 rotating relative to the bottle body 100 and limit the relative movement of the brush head 200 and the bottle body 100, the brush head 200 is provided with a circle of circular guide grooves 211 coaxial with the limiting circular ring 500, and the upper part of the bottle body 100 is provided with a circular protrusion 112 matched with the circular guide groove 211. In order to facilitate the assembly of the limiting hook 400, the limiting hook 400 includes an elastic connecting arm 410 extending upward and a hook portion 420 formed at the upper end of the elastic connecting arm 410. The lower end surface of the limiting circular ring 500 is inclined inward from bottom to top, and the hook portion 420 has an assembly inclined surface 421 matched with the lower end surface of the limiting circular ring 500. When assembling the brush head 200 on the bottle body 100, align the center position of the brush head 200 with the center position of the bottle body 100. At this time, the assembly bevel 421 of the hook portion 420 abuts against the lower end surface of the limiting ring 500, and then pressure is applied downward to the brush head 200. The assembly bevel 421 moves upward along the lower end surface of the limiting ring 500 to enter the inner circumferential wall of the limiting ring 500. Each elastic connecting arm 410 produces elastic deformation to move closer to each other. When the hook portion 420 reaches the upper end surface of the limiting ring 500, the elastic connecting arm 410 restores the elastic deformation, and the hook portion 420 abuts downward against the upper end surface of the limiting ring 500.

[0033] See also Figure 3 and Figure 4 In some embodiments of the present invention, an angle positioning mechanism is provided between the bottle body 100 and the brush head 200, and the angle positioning mechanism is used to keep the input end of the powder outlet channel 300 connected to the corresponding outlet 111. When the user chooses to use the loose powder in a powder bin 101, the angle positioning mechanism can keep the relative angle between the brush head 200 and the bottle body 100 relatively stable, so as to prevent the brush head 200 from rotating when the bristles 201 are brushing the skin.

[0034] See also Figure 3 and Figure 4In some embodiments of the utility model, the brush head 200 is provided with a circle of limiting rings 500 coaxial with the central axis of the bottle body 100, and the upper part of the bottle body 100 is provided with limiting hooks 400 whose number is consistent with the powder bin 101. The limiting hooks 400 include an upwardly extending elastic connecting arm 410 and a hook portion 420 formed at the upper end of the elastic connecting arm 410 to abut against the upper end surface of the limiting ring 500. The angle positioning mechanism includes a plurality of positioning grooves 610 formed on the inner circumferential wall of the limiting ring 500 and a plurality of positioning protrusions 620 formed on the outer circumferential wall of the elastic connecting arm 410 and corresponding to the positioning grooves 610. When the input end of the powder outlet channel 300 is connected to any discharge port 111, each positioning protrusion 620 is combined with the corresponding positioning groove 610. It can be understood that the cooperation between the limiting hook 400 and the limiting ring 500 realizes the rotational connection between the brush head 200 and the bottle body 100. The angle positioning mechanism of the above structure cleverly utilizes the structure of the limiting hook 400 and the limiting ring 500 to locate the relative angle position between the brush head 200 and the bottle body 100, which greatly simplifies the structure of the cosmetic brush and reduces the cost of production and assembly. Among them, the multiple positioning grooves 610 and the multiple positioning protrusions 620 are evenly spaced, that is, the angle difference between adjacent positioning grooves 610 and the angle difference between adjacent positioning protrusions 620 are equal.

[0035] See also Figure 2 In some embodiments of the utility model, the brush head 200 includes a mounting seat 210 and a bracket 220, the bristles 201 and the powder outlet channel 300 are both arranged on the bracket 220, and the bracket 220 is threadedly connected to the mounting seat 210, so as to facilitate the removal of the brush head 200 from the bottle body 100 to clean the bristles 201 or replace the bristles 201.

[0036] See also Figure 2In some embodiments of the utility model, the powder outlet channel 300 includes a powder storage pipe 310 and a powder discharge pipe 320 connected to the upper end of the powder storage pipe 310, the powder discharge pipe 320 and the powder storage pipe 310 are both vertically arranged in the center of the brush head 200, and the inner diameter of the powder discharge pipe 320 is smaller than the inner diameter of the powder storage pipe 310, the bristles 201 are arranged on the outside of the powder discharge pipe 320, and the brush head 200 is provided with a feeding port 330 at the side edge of the lower end of the powder storage pipe 310, and the brush head 200 rotates relative to the bottle body 100 so that its discharge port 111 is connected to the powder storage pipe 310. It can be understood that the powder outlet channel 300 can be connected with different powder bins 101 as the brush head 200 rotates relative to the bottle body 100, that is, the input end of the powder outlet channel 300 is offset relative to the center of the brush head 200, so the feed port 330 is located at the side edge of the lower end of the powder storage pipe 310. At this time, the flow rate of loose powder output will be greatly affected, and the inner diameter of the powder storage pipe 310 is larger than the inner diameter of the powder discharge pipe 320 to improve this situation. The loose powder in the powder bin 101 passes through the outlet 111 and the feed port 330 in turn and then enters the powder storage pipe 310 for standby. The loose powder in the powder storage pipe 310 is then discharged through the powder discharge pipe 320.

[0037] See also Figure 5 In some embodiments of the present invention, three radially distributed partitions 140 are provided inside the bottle body 100, the central axis of the bottle body 100 is located at the intersection of the three partitions 140, the powder bin 101 is located between two adjacent partitions 140, the discharge port 111 is a fan-shaped through hole located between two adjacent partitions 140, the feed port 330 can be stacked directly above the discharge port 111 and is consistent with the shape and size of the discharge port 111, and the vertex of the fan-shaped through hole points to the central axis of the bottle body 100. It can be understood that the cross section of the powder bin 101 of the above structure is also fan-shaped, and the fan-shaped through hole is conducive to discharging more loose powder in accordance with the shape of the powder bin 101. The feed port 330 is stacked directly above the discharge port 111 to avoid the accumulation of loose powder in the gap between the brush head 200 and the bottle body 100. The vertex of the fan-shaped through hole points to the central axis of the bottle body 100, which is conducive to shortening the path of loose powder discharge and improving the smoothness and efficiency of loose powder discharge.

[0038] See also Figure 3 In some embodiments of the utility model, the bottle body 100 includes a sleeve 110 with an opening at the lower end and a bottom cover 120 threadedly connected to the opening of the sleeve 110, the partition 140 is formed inside the sleeve 110, the discharge port 111 passes through the top wall of the sleeve 110, and a cushion block 130 is provided between the bottom cover 120 and the lower end opening of the sleeve 110. The cushion block 130 is provided with three embedding slots 131 for respectively inserting the lower ends of the partitions 140, and the cushion block 130 is provided with a sealing plug 132 extending into the powder bin 101 between adjacent embedding slots 131.

[0039] See also Figure 1 In some embodiments of the utility model, the bottle body 100 is telescopically provided with a middle bundle 700 that is movably mounted on the outside of the brush head 200 along its length direction. The middle bundle 700 is lifted and lowered relative to the brush head 200 to gather or unfold the bristles 201. The middle bundle 700 is snap-connected with a cap body 800 that contains the bristles 201 and the brush head 200. When in use, the cap body 800 is first removed, and the middle bundle 700 is slid downward, and the bristles 201 can be unfolded. When the makeup brush needs to be stored, the middle bundle 700 is slid upward, the bristles 201 are gathered, and the cap body 800 can be installed on the middle bundle 700.

[0040] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A makeup brush capable of switching the type of loose powder, characterized in that: include: A bottle body (100), wherein at least two mutually independent powder bins (101) are distributed in a circle around the central axis of the bottle body (100), an upper portion of the bottle body (100) is provided with a discharge port (111) which is connected to the powder bins (101) in a one-to-one correspondence, and a brush head (200) which can rotate around the central axis of the bottle body (100) is movably connected to the upper portion of the bottle body (100), and the brush head (200) is provided with a powder discharge channel (300) and bristles (201) located at the output end of the powder discharge channel (300), and the brush head (200) is rotated relative to the bottle body (100) so that the input end of the powder discharge channel (300) is only connected to one of the discharge ports (111).

2. A makeup brush capable of switching the type of loose powder according to claim 1, characterized in that: The brush head (200) is provided with a circle of limiting rings (500) coaxial with the central axis of the bottle body (100), and the upper part of the bottle body (100) is provided with a plurality of limiting hooks (400) extending upward to abut against the upper end surface of the limiting ring (500); when the brush head (200) rotates relative to the bottle body (100), the limiting hooks (400) move along the upper end surface of the limiting ring (500) to prevent the brush head (200) and the bottle body (100) from separating.

3. A makeup brush capable of switching the type of loose powder according to claim 2, characterized in that: One of the bottle body (100) and the brush head (200) is provided with a circle of circular guide grooves (211) coaxial with the circular limit ring (500), and the other is provided with a circular protrusion (112) matched with the circular guide groove (211); the limiting hook (400) comprises an elastic connecting arm (410) extending upward and a hook portion (420) formed at the upper end of the elastic connecting arm (410); the lower end surface of the limiting circular limit ring (500) is inclined inward from bottom to top, and the hook portion (420) has an assembly inclined surface (421) matched with the lower end surface of the limiting circular limit ring (500).

4. A makeup brush capable of switching the type of loose powder according to claim 1, characterized in that: An angle positioning mechanism is provided between the bottle body (100) and the brush head (200), and the angle positioning mechanism is used to maintain the input end of the powder outlet channel (300) in communication with the corresponding outlet (111).

5. A makeup brush capable of switching the type of loose powder according to claim 4, characterized in that: The brush head (200) is provided with a circle of limiting rings (500) coaxial with the central axis of the bottle body (100); the upper part of the bottle body (100) is provided with limiting hooks (400) whose number is consistent with the powder bin (101); the limiting hooks (400) include an elastic connecting arm (410) extending upward and a hook portion (420) formed at the upper end of the elastic connecting arm (410) to abut against the upper end surface of the limiting ring (500); The angle positioning mechanism comprises a plurality of positioning grooves (610) formed on the inner peripheral wall of the limiting ring (500) and a plurality of positioning protrusions (620) formed on the outer peripheral wall of the elastic connecting arm (410) and corresponding one-to-one to the positioning grooves (610); when the input end of the powder outlet channel (300) is connected to any of the outlet ports (111), each of the positioning protrusions (620) is combined with the corresponding positioning groove (610).

6. A makeup brush capable of switching the type of loose powder according to claim 1, characterized in that: The brush head (200) comprises a mounting seat (210) and a bracket (220), the bristles (201) and the powder outlet channel (300) are both arranged on the bracket (220), and the bracket (220) is threadedly connected to the mounting seat (210).

7. A makeup brush capable of switching the type of loose powder according to claim 1, characterized in that: The powder outlet channel (300) comprises a powder storage pipe (310) and a powder discharge pipe (320) connected to the upper end of the powder storage pipe (310); the powder discharge pipe (320) and the powder storage pipe (310) are both vertically arranged in the center of the brush head (200); the inner diameter of the powder discharge pipe (320) is smaller than the inner diameter of the powder storage pipe (310); the bristles (201) are arranged outside the powder discharge pipe (320); the brush head (200) is provided with a feeding port (330) at the side edge of the lower end of the powder storage pipe (310); the brush head (200) rotates relative to the bottle body (100) so that one of the discharge ports (111) is connected to the powder storage pipe (310).

8. A makeup brush capable of switching the type of loose powder according to claim 7, characterized in that: The bottle body (100) is provided with three radially distributed partitions (140) inside, the central axis of the bottle body (100) is located at the intersection of the three partitions (140), the powder bin (101) is located between two adjacent partitions (140), the discharge port (111) is a fan-shaped through hole located between two adjacent partitions (140), the feed port (330) can be stacked directly above the discharge port (111) and is consistent with the shape and size of the discharge port (111), and the vertex of the fan-shaped through hole points to the central axis of the bottle body (100).

9. A makeup brush capable of switching the type of loose powder according to claim 8, characterized in that: The bottle body (100) comprises a sleeve (110) with an opening at the lower end and a bottom cover (120) threadedly connected to the opening of the sleeve (110); the partition (140) is formed inside the sleeve (110); the discharge port (111) passes through the top wall of the sleeve (110); a cushion block (130) is provided between the bottom cover (120) and the lower end opening of the sleeve (110); the cushion block (130) is provided with three insertion slots (131) for inserting the lower ends of the partition (140) respectively; and the cushion block (130) is provided with a sealing plug (132) extending into the powder bin (101) between adjacent insertion slots (131).

10. A makeup brush capable of switching the type of loose powder according to claim 1, characterized in that: The bottle body (100) is telescopically provided with a middle bundle (700) movably mounted on the outside of the brush head (200) along its length direction; the middle bundle (700) is lifted and lowered relative to the brush head (200) to gather or unfold the bristles (201); the middle bundle (700) is snap-connected to a cap body (800) that accommodates the bristles (201) and the brush head (200).

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