One-way valve, toothbrush and personal care equipment

Abstract

The utility model relates to a one-way valve which comprises a valve body, a flow channel is arranged in the valve body, the end face of one end of the valve body is a valve face, a notch is formed in the valve face, and the notch is constructed to penetrate from the surface of the valve face to the flow channel. At least part of the area of the valve face is constructed to be a concave part which is concave towards the interior of the valve body, the notch is located in the concave part, the valve face comprises two first protruding parts which are arranged in a spaced mode, the first protruding parts are arranged in a protruding mode in the direction away from the valve body, and the concave part is formed by the space defined by the two first protruding parts. After flowing out of the notch, the fluid is contained in the sunken part, and the problem that materials are wasted due to the fact that the materials cannot be controlled is solved. The utility model further relates to a toothbrush and personal care equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a check valve, a toothbrush and a personal care device. Background Art

[0002] A check valve is a valve with the ability of one-way conduction and reverse cut-off, also known as a non-return valve. It can prevent the backflow of the medium on a specific pipeline, ensuring that the fluid can only flow in one direction. In a material personal care device, there is generally a material outlet for conveying materials, and the materials are conveyed out through the material outlet. However, in most cases, there is no backflow cut-off component such as a check valve at the material outlet, which is likely to cause the backflow of materials, resulting in the mixing and pollution of the conveyed materials and the materials in the flow channel. Taking a toothbrush with integrated paste as an example, there is a toothpaste outlet at the brush head of the toothbrush. The toothpaste is conveyed to the bristles through the toothpaste outlet and the toothpaste outlet is in an open state. At this time, the toothpaste conveyed outside the material outlet and other external media may flow back or enter the flow channel through the outlet, thereby polluting the toothpaste in the flow channel.

[0003] Some personal care devices are provided with check valves, but the structures of the check valves are different. For example, the valve surface of the check valve is a plane or a convex surface. The design of the plane or convex surface may cause the conveyed materials to overflow. For example, toothpaste overflows at the toothbrush head, but some parts of the brush head are not covered by toothpaste, and the toothpaste overflows from both sides, and the toothpaste drips everywhere, further causing waste of toothpaste and aesthetic problems in use. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a check valve, a toothbrush and a personal care device to solve the problem that the flow direction of materials cannot be controlled.

[0005] To achieve the above object, the technical solution adopted in the embodiment of the utility model is: a check valve, including a valve body, a flow channel is arranged inside the valve body, one end face of the valve body is a valve surface, a notch is arranged on the valve surface, the notch is configured to penetrate from the surface of the valve surface to the flow channel, at least part of the area of the valve surface is configured as a recessed part recessed into the valve body, and the notch is located in the recessed part.

[0006] Optionally, the valve surface includes two first convex parts arranged at intervals, the first convex parts protrude away from the valve body, and the space enclosed by the two first convex parts forms the recessed part.

[0007] Optionally, the valve face has two edge regions disposed oppositely on both sides thereof in a first direction, the two first convex portions are respectively disposed corresponding to the edge regions, and the outer surface of one first convex portion away from the other first convex portion is connected to the corresponding outer surface of the valve body, and the first direction is parallel to the radial direction of the valve body.

[0008] Optionally, the first convex portion includes a top surface at an end away from the valve body, and the top surface is a curved surface.

[0009] Optionally, the recessed portion includes a side surface and a concave bottom surface, and one surface of one first convex portion close to the other first convex portion forms the side surface of the recessed portion;

[0010] The side surface is a curved surface or a flat surface;

[0011] At least part of the concave bottom surface is at least one of a flat surface, a concave surface and a convex surface.

[0012] Optionally, the connection between the side surface and the concave bottom surface is a smoothly transitioned curved surface.

[0013] Optionally, the notch extends vertically from the surface of the valve face into the valve body along the axial direction of the valve body, or the notch extends obliquely from the surface of the valve face into the valve body relative to the axial direction of the valve body.

[0014] Optionally, the angle between the notch and the axial direction of the valve body is 5 to 80 degrees.

[0015] Optionally, at least one partition wall is provided inside the valve body, the partition wall divides the flow channel into at least two independent sub-flow channels, at least two notches are provided on the valve face, and at least two notches are in one-to-one correspondence and communication with at least two sub-flow channels.

[0016] Optionally, at least one notch extends vertically from the surface of the valve face into the valve body along the axial direction of the valve body, or at least one notch extends obliquely from the surface of the valve face into the valve body relative to the axial direction of the valve body.

[0017] Optionally, a first notch and a second notch are provided on the valve face, the valve face is provided with a center line extending in a direction perpendicular to the first direction, the first notch and the second notch are respectively provided on both sides of the center line, and both the first notch and the second notch are obliquely provided relative to the axial direction of the valve body.

[0018] Optionally, in the direction from one of the first convex portions to the other first convex portion, third notches, fourth notches, and fifth notches are arranged at intervals on the valve surface.

[0019] Optionally, at least one partition wall is arranged inside the valve body, the partition wall divides the flow channel into at least two sub-flow channels, at least one notch is arranged on the valve surface, and at least one of the notches includes a sixth notch, and the sixth notch is correspondingly communicated with at least two of the sub-flow channels.

[0020] Optionally, through holes are arranged on the partition wall between two adjacent sub-flow channels, and the through holes are configured to penetrate through the partition wall to communicate the two adjacent sub-flow channels.

[0021] An embodiment of the present invention further provides a toothbrush, the toothbrush head includes a brush handle and a brush plate, bristles and the above-mentioned one-way valve are arranged on the brush plate; a receiving cavity for receiving toothpaste is arranged inside the handle, the toothbrush head is provided with a channel for communicating with the receiving cavity, and the one-way valve is communicated with the channel.

[0022] An embodiment of the present invention further provides a personal care device, including a handle and a care head, and the above-mentioned one-way valve is arranged on the care head.

[0023] The beneficial effect of the present invention is that for the one-way valve provided by the present invention, a concave portion is arranged on the valve surface, and a notch is arranged on the concave portion. After the fluid flows out from the notch, it is received in the concave portion, avoiding the problem of material waste caused by uncontrollable material. Description of the Drawings

[0024] Figure 1 One of the schematic structural diagrams of the one-way valve with a double flow channel in the embodiment of the present invention;

[0025] Figure 2 Two of the schematic structural diagrams of the one-way valve with a double flow channel in the embodiment of the present invention;

[0026] Figure 3 Three of the schematic structural diagrams of the one-way valve with a double flow channel in the embodiment of the present invention;

[0027] Figure 4 Four of the schematic structural diagrams of the one-way valve with a double flow channel in the embodiment of the present invention;

[0028] Figure 5 One of the schematic structural diagrams of the one-way valve with a triple flow channel in the embodiment of the present invention;

[0029] Figure 6 Two of the schematic structural diagrams of the one-way valve with a triple flow channel in the embodiment of the present invention;

[0030] Figure 7 Shows the third structural schematic diagram of the one-way valve with three flow channels in the embodiment of the present utility model;

[0031] Figure 8 Shows the fourth structural schematic diagram of the one-way valve with three flow channels in the embodiment of the present utility model;

[0032] Figure 9 Shows the fluid flow direction schematic diagram where one notch corresponds to one sub-flow channel;

[0033] Figure 10 Shows the fluid flow direction schematic diagram where one notch corresponds to at least two sub-flow channels;

[0034] Figure 11 Shows the first structural schematic diagram of the toothbrush head in the embodiment of the present utility model;

[0035] Figure 12 Shows the second structural schematic diagram of the toothbrush head in the embodiment of the present utility model;

[0036] Figure 13 Shows the cross-sectional view of the toothbrush head in the embodiment of the present utility model;

[0037] Figure 14 Shows the first structural schematic diagram of the one-way valve and soft bristles in the embodiment of the present utility model;

[0038] Figure 15 Shows the second structural schematic diagram of the one-way valve and soft bristles in the embodiment of the present utility model;

[0039] Figure 16 Shows the exploded schematic diagram of the toothbrush head in the embodiment of the present utility model.

[0040] Explanation of reference numerals: 1 valve body; 21 recessed part; 22 first convex part; 211 concave bottom surface; 212 side surface; 213 top surface; 2001 center line; 301 partition wall; 3011 through hole; 201 first notch; 202 second notch; 203 third notch; 204 fourth notch; 205 fifth notch; 206 sixth notch; 31 first sub-flow channel, 32 second sub-flow channel; 33 third sub-flow channel; 34 fourth sub-flow channel; 35 fifth sub-flow channel; 36 sixth sub-flow channel; 37 seventh sub-flow channel; 10 one-way valve; 20 brush handle; 30 brush plate; 3001 hard bristles; 3002 soft bristles; 3003 blocking part. Detailed implementation manner

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0042] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. Similarly, terms such as "a", "an", or "the" do not denote a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or items appearing before the term cover the elements or items listed after the term and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0043] Features such as "parallel", "perpendicular", and "identical" used in the embodiments of the present disclosure include the strict meanings of "parallel", "perpendicular", "identical", etc., as well as cases with certain tolerances such as "substantially parallel", "substantially perpendicular", "substantially identical", etc. Considering measurements and tolerances associated with the measurement of specific quantities (e.g., limitations of the measurement system), it means within the acceptable deviation range for a specific value determined by those of ordinary skill in the art. For example, "substantially" can mean within one or more standard deviations, or within 3% or 5% of the value.

[0044] Referring Figures 1 - 8 As shown, this embodiment provides a one-way valve, including a valve body 1. A flow channel is provided inside the valve body 1. One end of the valve body 1 is provided with a fluid inlet communicating with the flow channel. The end face of the other end of the valve body 1 is a valve face. A notch is provided on the valve face. The notch is configured to penetrate from the surface of the valve face to the flow channel, and the notch is configured to be opened by the pressure exerted by the fluid entering the flow channel.

[0045] At least a part of the valve face is configured as a recessed portion 21 recessed into the valve body, and the notch is located in the recessed portion 21.

[0046] In the related art, the valve surface of the one-way valve is a flat surface or a convex surface protruding away from the valve body. After the material flows out from the cut on the valve surface, it directly overflows uncontrollably, and it is easy to overflow and drip when the material does not completely cover the required area, resulting in waste of the material. In this embodiment, at least a part of the valve surface is configured as a recessed portion 21 recessed into the valve body, and the cut is located in the recessed portion 21. The recessed portion 21 is equivalent to a buffer space. After the fluid flows out from the cut, it is controlled within the recessed portion 21, avoiding the problem of material waste caused by uncontrollable material.

[0047] It should be noted that there are various specific structural forms for forming the recessed portion 21. In some embodiments of this embodiment, at least in the first direction (refer to Figure 3 the X direction in), the valve surface includes two first convex portions 22 arranged at intervals. The first convex portions 22 protrude away from the valve body, and the space enclosed by the two first convex portions 22 forms the recessed portion 21, wherein the first direction is parallel to the radial direction of the valve body 1.

[0048] At least in the first direction, the valve surface includes two first convex portions 22 arranged at intervals. The extending direction of the first convex portions 22 is parallel to the axial direction of the valve body 1, and the first convex portions 22 protrude and extend away from the valve body 1. The cut is located in the recessed portion 21 between the two first convex portions 22.

[0049] The arrangement of the two first convex portions 22 can control the flow direction of the fluid, so that the fluid flows along a second direction perpendicular to the first direction (the second direction is perpendicular to the axial direction of the valve body 1). For example, when a one-way valve is provided on a toothbrush, refer to Figures 11 - 16 , the head of the toothbrush is generally a strip structure. When setting the one-way valve, the long side direction of the head can be perpendicular to the first direction, so that when the toothpaste flows out from the one-way valve onto the toothbrush, it can flow along the long side direction of the head, avoiding the situation of toothpaste overflowing and dripping from the short side direction.

[0050] In an exemplary embodiment, in the circumferential direction of the valve body 1, a plurality of the first convex portions 22 are provided, and the plurality of first convex portions 22 and the region of the valve surface located between the plurality of first convex portions 22 enclose to form a receiving groove.

[0051] In an exemplary embodiment, the two first convex portions 22 are provided at the edge regions on the opposite sides of the valve surface in the first direction, and the outer surface of one first convex portion 22 away from the other first convex portion 22 is connected to the corresponding outer surface of the valve body 1.

[0052] It should be noted that the connection form between the outer surface of one of the first convex portions 22 away from the other first convex portion 22 and the corresponding outer surface of the valve body 1 includes the cases of being flush and / or non-flush. For example, the two first convex portions are respectively defined as a first sub-convex portion and a second sub-convex portion. The outer surface of the first sub-convex portion away from the second sub-convex portion is flush with the corresponding outer surface of the valve body 1, and the outer surface of the second sub-convex portion away from the first sub-convex portion is flush with the corresponding outer surface of the valve body 1; or, the outer surface of the first sub-convex portion away from the second sub-convex portion is non-flush with the corresponding outer surface of the valve body 1, and the outer surface of the second sub-convex portion away from the first sub-convex portion is non-flush with the corresponding outer surface of the valve body 1; or, the outer surface of the first sub-convex portion away from the second sub-convex portion is flush with the corresponding outer surface of the valve body 1, and the outer surface of the second sub-convex portion away from the first sub-convex portion is non-flush with the corresponding outer surface of the valve body 1; or, the outer surface of the first sub-convex portion away from the second sub-convex portion is non-flush with the corresponding outer surface of the valve body 1, and the outer surface of the second sub-convex portion away from the first sub-convex portion is flush with the corresponding outer surface of the valve body 1.

[0053] Adopting the above solution can increase the distance between the two first convex portions 22, thereby increasing the size of the space formed by enclosing the area between the two first convex portions 22 and the valve surface located between the two first convex portions 22, so as to more effectively prevent material overflow. And the outer surface of one of the first convex portions 22 away from the other first convex portion 22 being flush with the corresponding outer surface of the valve body 1 can increase the aesthetic appearance of the one-way valve.

[0054] Reference Figure 3 , in an exemplary embodiment, the first convex portion 22 includes the top end surface 213 of one end of the valve body 1, and the top end surface 213 is a curved surface. The curved surface setting can avoid harm to users or other components in actual applications. For example, when applied to a toothbrush, it can avoid harm to people's gums during brushing.

[0055] Exemplarily, the top end surface 213 is a convex surface protruding away from the valve body 1, making the fluid flow more smoothly.

[0056] Exemplarily, the valve body 1 and the first convex portion 22 are integrally formed, and the material used for the valve body 1 and the material of the first convex portion 22 are also the same. Flexible materials such as soft glue or silica gel can be used to protect the corresponding parts of the user when the one-way valve is applied to items such as toothbrushes, for example, the function of protecting the gums.

[0057] In an exemplary embodiment, the recessed portion 21 includes a side surface 212 and a concave bottom surface 211. Figure 3The side surface 212 and the concave bottom surface 211 are demarcated by a dashed line therein (it should be noted that Figure 3 the dashed line in Figure 3 is only for better illustrating the positional relationship between the side surface 212 and the concave bottom surface 211, and actually this dashed line does not exist), one side of one first convex portion 22 close to another first convex portion 22 forms the side surface 212 of the recessed portion 21; the side surface 212 is a curved surface or a flat surface, and at least part of the region of the concave bottom surface 211 is at least one of a flat surface, a concave surface and a convex surface.

[0058] It should be noted that when the side surface 212 is a curved surface, this curved surface can be a concave surface or a convex surface.

[0059] The side surface 212 can be a concave surface, that is, one side of one first convex portion 22 close to another first convex portion 22 can be a concave surface, that is, a surface recessed in a direction away from another first convex portion 22, so as to increase the size of the recessed portion 21, can accommodate more fluid, more effectively avoid the overflow of materials, and can also make the fluid flow out more smoothly from the cut.

[0060] The side surface 212 can be a convex surface, that is, one side of one first convex portion 22 close to another first convex portion 22 can be a convex surface, that is, a surface convexly provided in a direction close to another first convex portion 22, increasing the blocking force.

[0061] The side surface 212 can be a flat surface, that is, one side of one first convex portion 22 close to another first convex portion 22 can also be a flat surface, and this flat surface can be arranged parallel to the axial direction of the valve body 1 or can be arranged obliquely to the axial direction of the valve body 1. When this flat surface is arranged obliquely to the axial direction of the valve body 1, the cross-section of the two first convex portions 22 and the region on the valve surface between the two convex portions forms an inverted trapezoid structure, that is, the distance between the two convex portions gradually increases along the direction away from the valve body 1, more effectively avoiding the overflow of materials.

[0062] It should be noted that the recessed portion 21 includes two side surfaces 212 located on opposite sides of the concave bottom surface 211, and the structural forms of the two side surfaces 212 can be the same or different. The specific structural forms of the two side surfaces 212 can be as follows:

[0063] The two side surfaces 212 can both be curved surfaces. Among them, the two side surfaces 212 can both be convex surfaces or concave surfaces, or one of the two side surfaces 212 is a convex surface and the other of the two side surfaces 212 is a concave surface.

[0064] The two side surfaces 212 may also both be flat surfaces. Among them, the two side surfaces may both be arranged parallel to the axial direction of the valve body 1, or both be inclined to the axial direction of the valve body 1, or one of the two side surfaces 212 is arranged parallel to the axial direction of the valve body 1, and the other of the two side surfaces 212 is inclined to the axial direction of the valve body 1.

[0065] One of the two side surfaces 212 is a curved surface, and the other of the two side surfaces 212 is a flat surface. Specifically, one of the two side surfaces 212 is a convex surface, and the other of the two side surfaces 212 is a flat surface, and this flat surface is arranged parallel to the axial direction of the valve body 1; or one of the two side surfaces 212 is a convex surface, and the other of the two side surfaces 212 is a flat surface, and this flat surface is inclined to the axial direction of the valve body 1; or, one of the two side surfaces 212 is a concave surface, and the other of the two side surfaces 212 is a flat surface, and this flat surface is arranged parallel to the axial direction of the valve body 1; or one of the two side surfaces 212 is a concave surface, and the other of the two side surfaces 212 is a flat surface, and this flat surface is inclined to the axial direction of the valve body 1.

[0066] In an exemplary embodiment, the connection between the side surface 212 and the concave bottom surface 211 is a smoothly transitioning curved surface or a flat surface.

[0067] It should be noted that at least part of the concave bottom surface 211 is at least one of a flat surface, a concave surface, and a convex surface, and the number of regions of the concave bottom surface 211 that are flat surfaces, concave surfaces, or convex surfaces can be set according to actual needs, and the arrangement can be set according to actual needs. For example, when the concave bottom surface 211 is at least two of a flat surface, a concave surface, and a convex surface, the concave bottom surface 211 can be in the shape of a grid pattern or a stripe pattern. When the concave bottom surface 211 is in the shape of a stripe pattern, the at least two of the flat surface, the concave surface, and the convex surface extend in a second direction perpendicular to the first direction (the second direction is parallel to the radial direction of the valve body).

[0068] It should be noted that the notch can be a strip-shaped notch, the extending direction of the notch is perpendicular or parallel to the first direction, or the included angle between the extending direction of the notch and the first direction is an acute angle. It should be noted that the length of the notch in its extending direction is less than the length of the recess 21, so that the notch is completely located within the corresponding recess 21.

[0069] In an exemplary embodiment, at least part of the concave bottom surface 211 is a concave surface and a convex surface that are staggered in the first direction, presenting a wavy structure.

[0070] Exemplarily, the concave surface may be a curved surface. For example, the cross-section of the concave surface has a U-shaped structure. The concave surface may also include an inclined surface. For example, the cross-section of the concave surface has a V-shaped structure, but is not limited thereto.

[0071] Exemplarily, the convex surface may be a curved surface. For example, the cross-section of the convex surface has an n-shaped structure. The convex surface may also include an inclined surface. For example, the cross-sectional shape of the convex surface may have an inverted V-shaped structure.

[0072] In an exemplary embodiment, the incision extends vertically from the surface of the valve face into the valve body along the axial direction of the valve body, or the incision is inclined from the surface of the valve face into the valve body relative to the axial direction of the valve body.

[0073] In the first direction, the valve face has a center line 2001. The incision may be inclined relative to the axial cross-section passing through the center line 2001. The cross-section perpendicular to the axial cross-section is a radial cross-section. The incision may be inclined with respect to the radial cross-section.

[0074] Preferably, the incision is inclined relative to the axial direction of the valve body 1, which can more effectively avoid the problem of fluid overflow.

[0075] Reference Figure 3 , Exemplarily, the angle a between the incision and the axial direction of the valve body 1 may be 5 to 80 degrees. In some embodiments, the angle a between the incision and the axial direction of the valve body 1 is 10 to 60 degrees, but is not limited thereto.

[0076] It should be noted that the angle a between the incision and the axial direction of the valve body 1 is formed because the incision extends from the surface of the valve face obliquely into the interior of the valve body relative to the axial direction of the valve body 1.

[0077] When using a one-way valve with a single flow channel to transport fluid, during the transportation process, different types of fluids remain on the wall surface of the flow channel, and it is easy to have a situation where different types of fluids are mixed or contaminated with each other. To address this problem, in the embodiments of the present example, at least one partition wall 301 is provided in the valve body. The partition wall divides the flow channel into at least two independent sub-flow channels, and at least two incisions corresponding to the at least two sub-flow channels are provided on the valve face. Figures 1 - 4 Schematic diagram of the flow channel including two sub-flow channels (i.e., double sub-flow channels) Figures 4 - 8Schematic diagram of the flow channel including three sub - flow channels. Different sub - flow channels can transport different fluids. When transporting different fluids, the problem of residual mixing or cross - contamination of different fluids is avoided; different sub - flow channels can also transport the same fluid. When transporting the same fluid simultaneously, the amount of fluid transported can be increased and the transportation time can be shortened.

[0078] It should be noted that the fluid can specifically be toothpaste, skin care products, etc., which is determined according to the actual scenario.

[0079] Exemplarily, at least part of the notch extends vertically from the surface of the valve face along the axial direction of the valve body into the valve body, or at least part of the notch extends obliquely from the surface of the valve face into the valve body relative to the axial direction of the valve body.

[0080] Reference Figures 1 - 4 In an exemplary embodiment, at least two of the sub - flow channels include a first sub - flow channel 31 and a second sub - flow channel 32. A first notch 201 corresponding to and communicating with the first sub - flow channel 31 and a second notch 202 corresponding to and communicating with the second sub - flow channel 32 are provided on the valve face;

[0081] The valve face is provided with a center line 2001 extending in a direction perpendicular to the first direction. The first notch 201 and the second notch 202 are respectively arranged on both sides of the center line 2001, and both the first notch 201 and the second notch 202 are inclined relative to the axial direction of the valve body, or both the first notch 201 and the second notch 202 can extend vertically along the axial direction of the valve body, or one of the first notch 201 and the second notch 202 is inclined relative to the axial direction of the valve body, and the other of the first notch 201 and the second notch 202 extends vertically along the axial direction of the valve body.

[0082] In some embodiments, both the first notch 201 and the second notch 202 are inclined relative to the axial direction of the valve body 1. At this time, the inclination directions of the first notch 201 and the second notch 202 can be the same or opposite. Preferably, the inclination directions of the first notch 201 and the second notch 202 are opposite, which is more conducive to the independent setting of the corresponding first sub - flow channel 31 and second sub - flow channel 32.

[0083] In an exemplary embodiment, the first notch 201 and the second notch 202 are symmetrically arranged on both sides of the center line 2001.

[0084] It should be noted that the setting of the positions of the first incision 201 and the second incision 202 is not limited to the above description. For example, one of the first incision 201 and the second incision 202 can be provided on the center line 2001.

[0085] In some specific embodiments, in the first direction, the concave bottom surface 211 includes a first region and a second region, the first region and the second region are symmetrically arranged with respect to the center line 2001, the first incision 201 is provided in the first region, and the second incision 202 is provided in the second region. The first region can be at least one of a concave surface, a convex surface, a flat surface, or an inclined surface. The second region can be at least one of a concave surface, a convex surface, a flat surface, or an inclined surface. The shapes of the first region and the second region can be the same or different.

[0086] Reference Figures 4 - 8 , in an exemplary embodiment, at least two of the sub-channels include a third sub-channel 33, a fourth sub-channel 34, and a fifth sub-channel 35 arranged in sequence in the one direction, and the valve surface is provided with a third incision 203 corresponding to and communicating with the third sub-channel 33, a fourth incision 204 corresponding to and communicating with the fourth sub-channel 34, and a fifth incision 205 corresponding to and communicating with the fifth sub-channel 35;

[0087] In the first direction, the third incision 203, the fourth incision 204, and the fifth incision 205 are arranged at intervals.

[0088] It should be noted that the arrangement manner of the third sub-channel 33, the fourth sub-channel 34, and the fifth sub-channel 35 can be set according to actual needs and is not limited to the above description.

[0089] In an exemplary embodiment, the fourth incision 204 is located on the center line 2001, and the third incision 203 and the fifth incision 205 are symmetrically arranged on both sides of the center line 2001.

[0090] Exemplarily, at least one of the third incision 203, the fourth incision 204, and the fifth incision 205 is inclined with respect to the axial direction of the valve body 1, or the third incision 203, the fourth incision 204, and the fifth incision 205 all extend perpendicularly along the axial direction of the valve body.

[0091] In an exemplary embodiment, the fourth cut 204 is vertically extended along the axial direction of the valve body, the third cut 203 and the fifth cut 205 are both inclined with respect to the axial direction of the valve body 1, and the third cut 203 and the fifth cut 205 are symmetrically arranged with respect to the fourth cut 204. It should be noted that the third cut 203 and the fifth cut 205 may also be asymmetrically arranged with respect to the fourth cut 204; the fourth cut 204 may not be arranged on the center line 2001, and no limitation is made here.

[0092] Exemplarily, the sizes of the third sub-channel 33, the fourth sub-channel 34 and the fifth sub-channel 35 can be set according to actual needs, and can be the same or different, and no limitation is made here.

[0093] In some specific embodiments, in the first direction, the concave bottom surface 211 includes a third region, a fourth region and a fifth region. The third cut 203 is arranged on the third region, the fourth cut 204 is arranged on the fourth region, and the fifth cut 205 is arranged on the fifth region. The third region can be at least one of a concave surface, a convex surface, a flat surface and an inclined surface, the fourth region can be at least one of a concave surface, a convex surface, a flat surface and an inclined surface, and the fifth region can be at least one of a concave surface, a convex surface, a flat surface and an inclined surface. The shapes of the third region, the fourth region and the fifth region can be the same or different.

[0094] It should be noted that Figure 9 is a schematic diagram of the fluid flow direction where one cut corresponds to one sub-channel, Figure 9 and the dashed arrows in it indicate the fluid flow direction. Figure 9 shows the structural form with two sub-channels arranged. The fluid of the first sub-channel 31 flows out from the first cut 201, and the fluid of the second sub-channel 32 flows out from the second cut 202. However, the corresponding manner of the cuts and sub-channels in this embodiment is not limited to the above. For example, at least one partition wall 301 is arranged inside the valve body 1, the partition wall 301 divides the flow channel into at least two sub-channels, at least one of the cuts is arranged on the valve surface, and at least one of the cuts includes a sixth cut 206, and the sixth cut 206 is correspondingly communicated with at least two of the sub-channels.

[0095] In an exemplary embodiment, through holes 3011 are arranged on the partition wall 301 between two adjacent sub-channels, and the through holes 3011 are configured to penetrate through the partition wall 301 to communicate the two adjacent sub-channels.

[0096] Specifically, referring to Figure 10 , Figure 10A schematic diagram of the fluid flow direction in which one notch corresponds to and connects two sub-channels is shown. Figure 10 The dashed arrows in represent the fluid flow direction. At least two of the sub-channels include a sixth sub-channel 36 and a seventh sub-channel 37. The sixth sub-channel 36 and the seventh sub-channel 37 are connected through the through-hole 3011 to share one notch, that is, the sixth notch 206. A through-hole 3011 is provided on the partition wall 301 between the sixth sub-channel 36 and the seventh sub-channel 37. After the fluid in the sixth sub-channel 36 passes through the through-hole 3011 and enters the seventh sub-channel 37, it flows out from the sixth notch 206, and the fluid in the seventh sub-channel 37 directly flows out from the sixth notch 206.

[0097] It should be noted that Figure 10 A schematic diagram of the fluid flow direction in which one notch corresponds to and connects two sub-channels is shown, but in an embodiment where one notch corresponds to and connects multiple sub-channels, the number of sub-channels corresponding to and connected by one notch is not limited to two.

[0098] It should be noted that in an embodiment where one notch corresponds to and connects multiple sub-channels and at least two notches are provided on the valve surface, the number of sub-channels corresponding to and connected by at least two of the notches may be the same or different.

[0099] It should be noted that in an embodiment where one notch corresponds to and connects multiple sub-channels and at least two notches are provided on the valve surface, the sub-channels corresponding to the same notch are connected to each other, and the sub-channels corresponding to different notches are independent of each other (i.e., not connected).

[0100] It should be noted that in a valve body 1, it may only include a structural form in which one notch corresponds to and connects one sub-channel, or it may only include a structural form in which one notch corresponds to and connects at least two sub-channels, or it may also include both of the above structural forms, that is, a one-to-one correspondence connection relationship exists between a part of the notches and the corresponding sub-channels, and a relationship in which one notch corresponds to and connects at least two sub-channels exists between another part of the notches and the corresponding sub-channels.

[0101] It should be noted that the valve body may be a cylinder or a cuboid structure, and no limitation is made here.

[0102] Reference Figures 11 - 16 In addition, an embodiment of the present invention further provides a toothbrush, including a handle and a toothbrush head. The toothbrush head includes a brush handle 20 and a brush plate 30. The brush plate 30 is provided with bristles, and the one-way valve 10 is provided on the brush plate 30. A receiving cavity for accommodating toothpaste is provided in the handle, and a channel for communicating with the receiving cavity is provided on the toothbrush head. The one-way valve is communicated with the channel.

[0103] Exemplarily, the height of the one-way valve 10 is lower than that of the bristles to avoid affecting the normal use of the bristles.

[0104] Exemplarily, since the one-way valve 10 is made of a flexible material, the one-way valve 10 can be reused as a bristle.

[0105] Exemplarily, the one-way valve 10 is entirely made of a flexible material, such as soft rubber or silicone, which is beneficial to protecting the gums.

[0106] Exemplarily, the brush plate 30 is in a strip structure. The one-way valve 10 includes a valve body 1. One end of the valve body 1 is provided with a toothpaste inlet, and the other end of the valve body 1 is provided with a valve surface. A recessed portion 21 is provided on the valve surface. A cut is provided on the recessed portion 21. The cut can be in a strip structure, and the extending direction of the length of the cut is parallel to the extending direction of the long side of the brush plate 30 (refer to Figure 11 the Y direction in

[0107] When squeezing the cut of the toothpaste one-way valve and opening the cut, the toothpaste flows out to the toothbrush head. The recessed portion 21 constitutes a buffer space for the toothpaste, avoiding the direct overflow of the toothpaste after flowing out of the cut and resulting in material waste. When the brushing mode is turned off, since the one-way valve is made of a flexible material, the cut is automatically closed, playing a role in preventing the toothpaste from flowing back.

[0108] Combined with Figure 1 and Figure 11 , in the first direction (refer to Figure 11 the X direction in

[0109] Exemplarily, the bristles further include soft bristles 3002 and hard bristles 3001.

[0110] Exemplarily, the soft bristles and the one-way valve are injection-molded into an integral structure. Figure 14 and Figure 15 are schematic diagrams of the soft bristles 3002 and the one-way valve 10 injection-molded into an integral structure. Figure 16 shows the exploded schematic diagram of the soft bristles 3002 and the one-way valve 10 injection-molded into an integral structure and the toothbrush head. Such a setting facilitates the installation of the one-way valve 10 and enhances the installation stability of the one-way valve 10.

[0111] Refer to Figures 11 - 16 , exemplarily, in the direction from the handle to the toothbrush head, that is, the extending direction of the long side of the brush plate 30 (refer toFigure 11 In the Y direction (in the Y direction in the figure), the one-way valve 10 is disposed close to the brush handle 20. A blocking portion 3003 is provided on the side of the one-way valve 10 close to the brush handle 20. The shape of the blocking portion 3003 is arc-shaped, and the orthographic projection of the one-way valve 10 on the blocking portion 3003 is located on the blocking portion 3003, so as to be able to block the toothpaste flowing out of the one-way valve 10 from moving in the direction close to the brush handle 20.

[0112] Exemplarily, the material of the blocking portion 3003 is a flexible material. The blocking portion 3003 can adopt the same material as that of the one-way valve 10, for example, soft rubber or silica gel.

[0113] Exemplarily, the blocking portion 3003 can be reused as bristles.

[0114] Exemplarily, the valve body 1 of the one-way valve includes a first part and a second part in its axial direction. The first part is embedded in the brush plate 30, and the second part is exposed outside the brush plate 30. The valve surface is located at one end of the second part away from the first part, and the second part and the toothbrush bristles are on the same side of the brush plate 30.

[0115] Exemplarily, the radial cross-sectional area of the second part is less than or equal to the radial cross-sectional area of the first part, but not limited thereto.

[0116] Exemplarily, the toothbrush can be a manual toothbrush or an electric toothbrush.

[0117] An embodiment of the present invention further provides a personal care device, including a handle and a care head, and the above-mentioned one-way valve is provided on the care head.

[0118] Exemplarily, the personal care device can be a toothbrush, a bottled structure for skin care products, etc.

[0119] The following points need to be explained:

[0120] (1) The drawings in the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0121] (2) For clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of the layer or region is enlarged or reduced, that is, these drawings are not drawn according to the actual scale. It can be understood that when an element such as a layer, a film, a region or a substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element or there can be intermediate elements.

[0122] (3) Without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain new embodiments.

[0123] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present utility model, and the present utility model is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these modifications and improvements are also regarded as the protection scope of the present utility model.

Claims

1. A one-way valve, characterized in that: A valve body is provided with a flow channel inside the valve body, an end surface of one end of the valve body is a valve face, a cutout is provided on the valve face, the cutout is configured to pass through from the surface of the valve face to the flow channel, at least a part of the valve face is configured to be a recessed portion recessed toward the inside of the valve body, and the cutout is located in the recessed portion; The valve surface includes two first convex portions which are arranged at an interval, the first convex portions are arranged to protrude in a direction away from the valve body, and the space enclosed by the two first convex portions forms the recessed portion.

2. The one-way valve according to claim 1, characterized in that: The valve face has two edge areas relatively arranged on both sides thereof in the first direction, the two first protrusions are respectively arranged in the edge areas, and the outer surface of one of the first protrusions away from the other first protrusion is connected to the corresponding outer surface of the valve body, and the first direction is parallel to the radial direction of the valve body.

3. The one-way valve according to claim 1, characterized in that: The first convex portion includes a top end surface away from one end of the valve body, and the top end surface is a curved surface.

4. The one-way valve according to claim 1, characterized in that: The concave portion includes a side surface and a concave bottom surface, and a side of one of the first convex portions close to another first convex portion forms the side surface of the concave portion; The side surface is a curved surface or a flat surface; At least a portion of the concave bottom surface is at least one of a flat surface, a concave surface and a convex surface.

5. The one-way valve according to claim 4, characterized in that: The connection between the side surface and the concave bottom surface is a curved surface with a smooth transition.

6. The one-way valve according to claim 1, characterized in that: The cutout extends perpendicularly from the surface of the valve face along the axial direction of the valve body toward the inside of the valve body, or the cutout extends obliquely from the surface of the valve face relative to the axial direction of the valve body toward the inside of the valve body.

7. The one-way valve according to claim 1 or 6, characterized in that: The included angle between the cutout and the axial direction of the valve body is 5 to 80 degrees.

8. The one-way valve according to claim 2, characterized in that: At least one partition wall is arranged inside the valve body, and the partition wall divides the flow channel into at least two independent sub-flow channels. At least two cutouts are arranged on the valve surface, and at least two cutouts are connected to at least two sub-flow channels in a one-to-one correspondence.

9. The one-way valve according to claim 8, characterized in that: At least one of the cutouts extends vertically from the surface of the valve face along the axial direction of the valve body toward the inside of the valve body, or at least one of the cutouts extends obliquely from the surface of the valve face toward the inside of the valve body relative to the axial direction of the valve body.

10. The one-way valve according to claim 8, characterized in that: The valve surface is provided with a first incision and a second incision, and the valve surface includes a center line extending in a direction perpendicular to the first direction, the first incision and the second incision are respectively arranged on both sides of the center line, and the first incision and the second incision are both inclined relative to the axial direction of the valve body.

11. The one-way valve according to claim 8, characterized in that: In a direction from one of the first protrusions to another of the first protrusions, a third cutout, a fourth cutout and a fifth cutout arranged at intervals are provided on the valve surface.

12. The one-way valve according to claim 1, characterized in that: At least one partition wall is arranged inside the valve body, and the partition wall divides the flow channel into at least two sub-flow channels. At least one of the cutouts is arranged on the valve surface, and at least one of the cutouts includes a sixth cutout, and the sixth cutout is arranged to communicate with at least two of the sub-flow channels.

13. The one-way valve according to claim 12, characterized in that: A through hole is arranged on the partition wall between two adjacent sub-flow channels, and the through hole is configured to penetrate the partition wall to connect the two adjacent sub-flow channels.

14. A toothbrush, characterized in that: It comprises a handle and a toothbrush head, wherein the toothbrush head comprises a brush handle and a brush plate, the brush plate is provided with bristles and a one-way valve as claimed in any one of claims 1 to 13; a accommodating cavity for accommodating toothpaste is provided in the handle, the toothbrush head is provided with a channel for communicating with the accommodating cavity, and the one-way valve is communicated with the channel.

15. A personal care device, characterized in that The invention comprises a handle and a care head, wherein the care head is provided with a one-way valve according to any one of claims 1 to 13.

Images