A toothbrush head and a power toothbrush

Abstract

The application discloses a toothbrush head and an electric toothbrush, wherein the toothbrush head comprises a head, an out-gel valve and bristles are arranged on a mounting surface of the head, a first out-gel channel extending to the out-gel valve is arranged in the head, and the first out-gel channel is used for flowing toothpaste; wherein the head is provided with a plurality of bristle holes formed by recessing from the mounting surface, the bristle holes are located around the out-gel valve, and the bristles are implanted into the bristle holes; the plurality of bristle holes comprise a second bristle hole; along a thickness direction of the head, a projection of a recess direction of the second bristle hole on a same plane as the first out-gel channel is overlapped; and along the thickness direction of the head, a recess depth of the second bristle hole is smaller than a spacing between a position of the mounting surface forming the second bristle hole and the first out-gel channel. The toothbrush head and the electric toothbrush are used for improving a cleaning effect, and can simplify a structure of the toothbrush head and facilitate gathering of the toothpaste.

Description

Technical Field

[0001] This invention relates to the field of toothbrush technology, and more particularly to a toothbrush head and an electric toothbrush. Background Technology

[0002] When using a toothbrush, toothpaste needs to be applied to the brush head before brushing. Some existing toothbrushes and toothpaste are separate products, requiring both a toothbrush and toothpaste to be prepared before brushing. The user then manually squeezes the toothpaste onto the brush head.

[0003] To optimize the brushing experience, some existing toothbrushes integrate a toothpaste container and a toothpaste driving component. This component propels the toothpaste from the container onto the brush head for automatic dispensing. However, to ensure the toothpaste flows to the brush head, channels are incorporated within the brush head. The design of these channels affects the bristle configuration.

[0004] Chinese utility model patent CN220937160U discloses a brush head with silicone pillars as bristles for cleaning teeth. The silicone pillars can be directly mounted on the brush head surface, eliminating the need for corresponding recesses in the toothbrush to prevent interference between these recesses and the channels within the brush head. However, toothpaste adheres weakly to silicone, so a dispensing guide plate is also included on the brush head to concentrate the toothpaste. This design results in a complex brush head structure, and the cleaning effect of the silicone pillars is weaker than that of traditional bristles.

[0005] Chinese utility model patent CN218852162U discloses a toothbrush with a toothpaste dispensing hole located at the bottom of the brush head, and bristles positioned above or to the sides of the dispensing hole. The channel within the brush head extends to the dispensing hole and stops there; at this point, the channel has virtually no impact on the bristle arrangement. However, by placing the dispensing hole at the bottom of the brush head, there is no bristle obstruction below it, causing toothpaste to easily overflow downwards from the dispensing hole, resulting in toothpaste waste. Summary of the Invention

[0006] The purpose of this invention is to provide a toothbrush head and an electric toothbrush that improve cleaning performance, simplify the brush head structure, and facilitate the gathering of toothpaste.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A toothbrush head includes a head, a toothpaste dispensing valve and bristles are provided on the mounting surface of the head, and a first toothpaste dispensing channel is provided inside the head extending to the toothpaste dispensing valve, the first toothpaste dispensing channel being used for toothpaste flow.

[0009] The head is provided with a plurality of brush holes formed by a recess in the mounting surface. The brush holes are located around the cream dispensing valve, and the brush bristles are inserted into the brush holes. The plurality of brush holes includes a second brush hole. Along the thickness direction of the head, the recessed direction of the second brush hole overlaps with the projection of the first cream dispensing channel on the same plane. Along the thickness direction of the head, the recessed depth of the second brush hole is less than the distance between the position of the second brush hole formed on the mounting surface and the first cream dispensing channel.

[0010] Preferably, it further includes a rod body connected to the head, the rod body being used to connect to a handle; one side of the head protrudes relative to the rod body along the thickness direction of the head and forms a protrusion having the mounting surface.

[0011] Preferably, the mounting surface is the surface of the protrusion, and the mounting surface protrudes relative to the rod body along the thickness direction of the head to form the protrusion.

[0012] Preferably, the mounting surface includes a first portion and a second portion, wherein the first portion protrudes relative to the rod body along the thickness direction of the head to form the protrusion.

[0013] Preferably, the thickness of the protrusion is 0.2 to 0.25 times the outer diameter of the connection point between the rod and the head;

[0014] And / or, the depth of the brush bristle pores is 0.35 to 0.4 times the thickness of the head;

[0015] And / or, the distance between the bottom wall of the brush bristle hole and the first paste dispensing channel is 0.35 to 0.4 times or 0.05 to 0.1 times the thickness of the head;

[0016] And / or, the diameter of the first ointment outlet channel is 0.21 to 0.27 times the thickness of the head.

[0017] Preferably, the thickness of the protrusion is 1.3mm to 1.8mm; the outer diameter of the connection between the rod and the head is 6.6mm to 7.2mm; the depth of the brush hole is 2.9mm to 3.5mm; the distance between the bottom wall of the brush hole and the first paste dispensing channel is 0.4mm to 0.8mm; the thickness of the head is 8.2mm to 8.8mm; and the diameter of the first paste dispensing channel is 1.7mm to 2.3mm.

[0018] Preferably, the toothbrush further includes a rod connected to the head, the rod being used to connect to the toothbrush handle; the rod is provided with a second toothbrush dispensing channel communicating with the first toothbrush dispensing channel, the first toothbrush dispensing channel being offset relative to the second toothbrush dispensing channel in a direction away from the mounting surface.

[0019] Preferably, the toothbrush further includes a rod connected to the head, the rod being used to connect to the toothbrush handle, the rod having a second toothbrush dispensing channel communicating with the first toothbrush dispensing channel; one side of the head protrudes relative to the rod along the thickness direction of the head and forms a protrusion having the mounting surface, and the first toothbrush dispensing channel is offset relative to the second toothbrush dispensing channel in a direction away from the mounting surface.

[0020] Preferably, the bristles are all inserted into the bristle holes to be fixed to the head, the paste dispensing valve is adjacent to and spaced apart from the bristles, and the paste dispensing valve communicates with the space between any adjacent bristles; the bristles located around the paste dispensing valve form a paste dispensing space, which is used to contain the paste discharged from the paste dispensing valve.

[0021] An electric toothbrush includes a toothpaste container, a handle, and a toothbrush head; the electric toothbrush has a connecting channel extending from the toothpaste container to the toothbrush head, wherein toothpaste in the toothpaste container can flow into the first toothpaste dispensing channel through the connecting channel and be discharged from the toothpaste dispensing valve.

[0022] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0023] By designing the second brush hole, the depth of its recess is less than the distance between the location of the second brush hole on the mounting surface and the first toothpaste dispensing channel. The bristles within the second brush hole can be fixed to the head via a bristle implantation method. This bristle implantation method allows for easier toothpaste adhesion, eliminating the need for baffles or other toothpaste-gathering components on the head, thus simplifying the head's structure. Furthermore, the multiple brush holes surrounding the toothpaste dispensing valve block the toothpaste discharged from the valve, effectively gathering the toothpaste and preventing it from detaching from the head. In addition, the implanted bristles provide better cleaning than existing silicone bristles, enhancing the toothbrush head's cleaning effect on the oral cavity. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an electric toothbrush according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the toothbrush head structure according to an embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of a toothbrush head according to an embodiment of the present invention;

[0027] Figure 4 This is a partial cross-sectional view of a toothbrush head according to an embodiment of the present invention;

[0028] Figure 5This is a partial cross-sectional view of a toothbrush head according to another embodiment of the present invention;

[0029] Figure 6 This is a partial cross-sectional view of a toothbrush head according to another embodiment of the present invention;

[0030] Figure 7 This is a partial structural diagram of the toothbrush head according to an embodiment of the present invention.

[0031] In the diagram: 100, toothbrush head; 1, head; 11, mounting surface; 111, back; 112, first part; 113, second part; 12, toothpaste dispensing valve; 13, bristles; 131, toothpaste dispensing space; 14, bristle hole; 141, first bristle hole; 142, second bristle hole; 143, soft bristle hole; 144, hard bristle hole; 15, first toothpaste dispensing channel; 16, protrusion; 17, partition wall; 2, handle; 21, second toothpaste dispensing channel; 22, bent section; 200, toothpaste container; 300, handle. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided to make the invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0033] The terms used to express position and direction in this invention are illustrated with reference to the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this invention.

[0034] like Figures 2 to 7 As shown, the present invention provides a toothbrush head 100, which includes a head 1 and a handle 2. The head 1 is connected to the handle 2.

[0035] Reference Figure 2 and Figure 3 The head 1 may be provided with bristles 13 and a paste dispensing valve 12, and a first paste dispensing channel 15 extending to the paste dispensing valve 12 may be provided inside the head 1. The first paste dispensing channel 15 can be used to supply paste flow, and one end of the first paste dispensing channel 15 can extend to the paste dispensing valve 12 so that the paste in the first paste dispensing channel 15 can be discharged to the outside of the head 1 through the paste dispensing valve 12.

[0036] The toothpaste dispensing valve 12 and the bristles 13 are located on the same side of the head 1. The toothpaste dispensed from the toothpaste dispensing valve 12 can be placed on the bristles 13, thus allowing toothpaste to adhere to the bristles 13 for brushing. The toothpaste dispensing valve 12 can be a one-way valve, meaning that the toothpaste dispensing valve 12 can only allow the toothpaste to flow outwards, and the toothpaste on the outside will not flow into the head 1 through the toothpaste dispensing valve 12.

[0037] In some specific embodiments, to facilitate the placement of the brush bristles 13 and the paste dispensing valve 12, a mounting surface 11 can be formed on one side of the head 1, and the brush head and the paste dispensing valve 12 are respectively disposed on the mounting surface 11; the mounting surface 11 can be a flat surface or a stepped surface. The brush bristles 13 can be disposed around the paste dispensing valve 12, and the height of the brush bristles 13 protruding from the mounting surface 11 is greater than the height of the paste dispensing valve 12 protruding from the mounting surface 11. The brush bristles 13 located around the paste dispensing valve 12 can form a paste dispensing space 131, and the portion of the paste dispensing valve 12 protruding from the mounting surface 11 is located within the paste dispensing space 131. When the paste is discharged from the paste dispensing valve 12, the paste will fill the paste dispensing space 131, and the paste can contact and adhere to the brush bristles 13 surrounding the paste dispensing space 131. The brush bristles 13 located around the paste dispensing valve 12 can be arranged adjacently to ensure that the paste discharged from the paste dispensing valve 12 can adhere to the brush bristles 13; and the space between the paste dispensing valve 12 and any adjacent brush bristles 13 is open, that is, there is no need to provide components such as baffles to block the paste dispensing valve 12 and any adjacent brush bristles 13.

[0038] To facilitate the adhesion of the ointment to the bristles 13, the bristles 13 can be installed on the head 1 by means of implantation into the bristle holes 14. When the bristles 13 are installed on the head 1 by means of implantation into the bristle holes 14, the bristles 13 can be needle-like bristles, that is, the bristles 13 do not need to be silicone pillars made of silicone material. Specifically, the head 1 is provided with bristle holes 14 formed by the recess of the mounting surface 11. Multiple bristle holes 14 can be provided, and multiple bristle holes 14 can be located around the ointment dispensing valve 12. Each bristle hole 14 is used to implant bristles 13, so that the bristles 13 can surround the ointment dispensing valve 12. The recess direction of the bristle hole 14 can be the thickness direction of the head 1. Multiple bristles 13 can be implanted in each bristle hole 14. For example, multiple bristles 13 form a bundle of bristles 13, and a bundle of bristles 13 is implanted into the corresponding first bristle hole 14. When the bristles 13 are needle-like bristles, a bundle of bristles 13 consists of multiple needle-like bristles 13. The toothpaste adheres strongly to this bundle of bristles 13, eliminating the need for baffles or other toothpaste-gathering components on the head 1, thus simplifying the head 1's structure. Furthermore, when the toothpaste dispensing valve 12 is located inside the bristles 13, the toothpaste dispensed from the valve 12 is directly blocked by the surrounding bristles 13, preventing toothpaste from overflowing and detaching from the brush head, thus avoiding toothpaste waste. All the bristles 13 on the head 1 can be fixed to the head 1 by being inserted into corresponding bristle holes 13.

[0039] When the brush hole 14 is provided for implanting the brush bristles 13, if the brush hole 14 is connected to the first cream dispensing channel 15, it will affect the flow within the first cream dispensing channel 15. To prevent the brush hole 14 from affecting the first cream dispensing channel 15, the depth of the brush hole 14 corresponding to the first cream dispensing channel 15 can be less than the distance between the mounting surface 11 and the first cream dispensing channel 15. Therefore, the brush hole 14 will not be recessed from the mounting surface 11 to connect with the first cream dispensing channel 15, that is, the setting of the brush hole 14 will not affect the first cream dispensing channel 15, thereby ensuring normal cream dispensing operation. Specifically, the brush hole 14 corresponding to the first cream dispensing channel 15 is the brush hole 14 that might connect with the first cream dispensing channel 15 when the recessed depth is relatively deep.

[0040] In some specific embodiments, the multiple brush holes 14 can be divided into first brush holes 141 and second brush holes 142. One or more first brush holes 141 can be provided. The projection of the first brush hole 141 onto the first cream dispensing channel 15 along the thickness direction of the head 1 does not overlap. The recess direction of the first brush hole 141 from the mounting surface 11 is parallel to the thickness direction of the head 1. In this case, the first brush hole 141 will not communicate with the first cream dispensing channel 15 due to excessive recess, meaning that the provision of the first brush hole 141 will not affect the first cream dispensing channel 15.

[0041] One or more second brush holes 142 may be provided. The second brush holes 142 may overlap with the projection of the first cream dispensing channel 15 onto the same plane along the thickness direction of the head 1. For example, the second brush holes 142 may partially or completely overlap with the projection of the first cream dispensing channel 15 onto the same plane along the thickness direction of the head 1. The recess direction of the second brush holes 142 from the mounting surface 11 is parallel to the thickness direction of the head 1. In this case, the second brush holes 142 may communicate with the first cream dispensing channel 15 due to excessive recess. Therefore, the recess depth of the second brush holes 142 along the thickness direction of the head 1 needs to be less than the interval between the mounting surface 11 and the first cream dispensing channel 15. The interval between the second brush holes 142 and the first cream dispensing channel 15 is filled by a partition wall 17, which separates the second brush holes 142 and the first cream dispensing channel 15.

[0042] In existing toothbrush heads, to prevent the bristles from interfering with the toothpaste dispensing channel, silicone pillars are used instead of bristles at the toothpaste dispensing channel position. These silicone pillars do not require bristle holes for installation, thus preventing interference with the toothpaste dispensing channel. However, using silicone pillars requires a baffle to collect toothpaste, and the cleaning effect of silicone pillars is relatively weak. In this application, by setting the second bristle hole 142, the recess depth of the second bristle hole 142 needs to be less than the interval between the position of the second bristle hole 142 formed on the mounting surface 11 and the first toothpaste dispensing channel 15. The bristle hole corresponding to the first toothpaste dispensing channel 15 can be fixed to the head 1 by bristle implantation, thereby improving the cleaning effect of the head 1. Furthermore, the bristles 13 formed by bristle implantation can stably adhere to toothpaste, eliminating the need for a baffle to collect toothpaste.

[0043] To ensure that the bristles 13 can be stably inserted into the bristle holes 14, the depth of the bristle holes 14 has certain requirements. That is, in the head 1, it is difficult to prevent the bristle holes 14 from interfering with the first paste dispensing channel 15 by shortening the depth of the bristle holes 14. In some specific embodiments, a protrusion 16 can be provided on one side of the head 1, which protrudes from the corresponding rod 2 along the thickness direction of the head 1. The protrusion 16 is specifically formed by the mounting surface 11 of the head 1. By providing the protrusion 16, the distance between the mounting surface 11 and the first paste dispensing channel 15 along the thickness direction of the head 1 can be increased. By increasing the degree of protrusion of the protrusion 16, the second bristle hole 142 can meet the depth requirements without communicating with the first paste dispensing channel 15.

[0044] Reference Figure 4 In some specific embodiments, the protrusion 16 can be formed by protruding from the entire mounting surface 11, that is, the entire mounting surface 11 is the surface of the protrusion 16, and all the bristles 13 are respectively inserted into the protrusion 16 at the positions corresponding to the bristle holes 14. The mounting surface 11 can be a plane.

[0045] Reference Figure 5 In some other embodiments, the protrusion 16 may be formed as a portion of the mounting surface 11. Specifically, the mounting surface 11 includes a first portion 112 and a second portion 113. Along the thickness direction of the head 1, the projection of the first portion 112 of the mounting surface 11 onto the same plane coincides with the projection of the first dispensing channel 15. Along the thickness direction of the head 1, the projection of the second portion 113 of the mounting surface 11 onto the same plane is separate from the projection of the first dispensing channel 15, that is, there is no overlap between the projection of the second portion 113 of the mounting surface 11 onto the same plane and the projection of the first dispensing channel 15.

[0046] The protrusion 16 can be formed by protruding from the first portion 112 of the mounting surface 11. In this case, the second portion 113 of the protrusion 16 may not protrude relative to the rod body 2 along the thickness direction of the head 1. The second brush hole 142, which may be connected to the first paste dispensing channel 15 due to its deep recess, is formed by recessing from the protrusion 16. By providing the protrusion 16, the distance between the recessed starting end of the second brush hole 142 (the end of the protrusion 16 facing away from the first paste dispensing channel 15) and the first paste dispensing channel 15 along the thickness direction of the head 1 can be increased, thereby preventing the second brush hole 142 from being recessed too deeply and connecting with the first paste dispensing channel 15. Wherein, when the protrusion 16 is formed by protruding from the first portion 112 of the mounting surface 11, the mounting surface 11 may not be a complete plane. The mounting surface 11 may be a stepped surface, that is, the first portion 112 of the mounting surface 11 is higher than the second portion 113 of the mounting surface 11.

[0047] Reference Figure 3 In some specific embodiments, if the protrusion of the protrusion 16 is too large, the head 1 will be too large, affecting the user's experience when using the head 1 for teeth cleaning. Conversely, if the protrusion of the protrusion 16 is too small, the second brush hole 142 may connect with the first toothpaste dispensing channel 15. To balance the protrusion of the protrusion 16, the thickness D1 of the protrusion 16 is 0.2 to 0.25 times the outer diameter D2 of the connection between the rod 2 and the head 1. When the head 1 does not have the protrusion 16, the thickness D6 of the head 1 and the outer diameter D2 of the connection between the rod 2 and the head 1 are essentially the same.

[0048] The first dispensing channel 15 can be formed by extending vertically from the center of the rod 2. The diameter D3 of the first dispensing channel 15 can be 0.21 to 0.27 times the thickness D6 of the head 1. The depth D4 of the brush hole 14 can be 0.35 to 0.4 times the thickness D6 of the head 1. For example, the depths of the first brush hole 141 and the second brush hole 142 are the same, and the depths of both the first brush hole 141 and the second brush hole 142 are 0.35 to 0.4 times the thickness of the head 1. The distance D5 between the bottom wall of the brush hole 14 and the first dispensing channel 15 is 0.05 to 0.1 times the thickness D6 of the head 1.

[0049] In some specific embodiments, the thickness D1 of the protrusion 16 can be 1.3mm to 1.8mm; the outer diameter D2 of the connection between the rod 2 and the head 1 can be 6.6mm to 7.2mm; the depth D4 of the brush hole 14 can be 2.9mm to 3.5mm; the distance D5 between the bottom wall of the brush hole 14 and the first paste dispensing channel 15 can be 0.4mm to 0.8mm; the thickness D6 of the head 1 can be 8.2mm to 8.8mm; and the diameter D3 of the first paste dispensing channel 15 can be 1.7mm to 2.3mm. Specifically, the thickness D1 of the protrusion 16 can be 1.56mm; the outer diameter D2 of the connection between the rod 2 and the head 1 can be 6.91mm; the depth D4 of the brush hole 14 can be 3.2mm; the distance D5 between the bottom wall of the brush hole 14 and the first paste dispensing channel 15 can be 0.6mm; the thickness D6 of the head 1 can be 8.47mm; and the diameter D3 of the first paste dispensing channel 15 can be 2mm.

[0050] Reference Figure 2 and Figure 3 The rod body 2 is provided with a second paste dispensing channel 21, which can communicate with the first paste dispensing channel 15. One end of the second paste dispensing channel 21 is used to receive paste from the handle 300. The paste flows from the second paste dispensing channel 21 toward the first paste dispensing channel 15 and can be discharged from the paste dispensing valve 12.

[0051] Reference Figure 3 In some specific embodiments, the axis of the first ointment outlet channel 15 may coincide with and be collinear with the axis of the second ointment outlet channel 21.

[0052] Reference Figure 6 In some specific embodiments, the first ointment dispensing channel 15 can be offset relative to the second ointment dispensing channel 21. Specifically, the first ointment dispensing channel 15 can be offset in a direction away from the mounting surface 11, in which case the axis of the first ointment dispensing channel 15 and the axis of the second ointment dispensing channel 21 are spaced apart, and the first ointment dispensing channel 15 and the second ointment dispensing channel 21 are connected by a bend 22. When the first ointment dispensing channel 15 is offset in a direction away from the mounting surface 11, the distance between the first ointment dispensing channel 15 and the mounting surface 11 increases along the thickness direction of the head 1. At this time, the second brush bristle hole 142 meets the depth requirements for implanting the brush bristles 13 while not communicating with the first ointment dispensing channel 15.

[0053] When the first paste dispensing channel 15 is offset toward the mounting surface 11, the back side 111 of the head 1 opposite to the mounting surface 11 can protrude relative to the rod body 2 along the thickness direction of the head 1. By making the back side 111 of the head 1 protrude, offset space can be reserved for the first paste dispensing channel 15, ensuring that the first paste dispensing channel 15 can still be located inside the head 1 after offset.

[0054] Reference Figure 4 and Figure 5 When setting the head 1 structure, the mounting surface 11 can be protruded relative to the rod 2 along the thickness direction of the head 1 to form a protrusion 16. The axis of the first ointment channel 15 coincides with and is collinear with the axis of the second ointment channel 21. The protrusion 16 ensures that the second brush hole 142 meets the depth requirements for implanting the brush bristles 13 while not communicating with the first ointment channel 15.

[0055] Or, refer to Figure 6 When setting the head 1 structure, the first paste dispensing channel 15 can be offset relative to the second paste dispensing channel 21, so that the first paste dispensing channel 15 is offset away from the mounting surface 11. The mounting surface 11 does not need to protrude relative to the rod 2 along the thickness direction of the head 1, while the back surface 111 can protrude relative to the rod 2 along the thickness direction of the head 1. By offsetting the first paste dispensing channel 15 away from the mounting surface 11, it is ensured that the second brush bristle hole 142 meets the depth requirements for implanting the brush bristles 13 while not communicating with the first paste dispensing channel 15.

[0056] At this time, the offset distance of the first dispensing channel 15 relative to the second dispensing channel 21, and the distance by which the back surface 111 protrudes relative to the rod body 2 along the thickness direction of the head 1, can be the same as or similar to the first thickness. The first thickness is the thickness of the protrusion 16 when only the protrusion 16 is used to prevent the second brush hole 142 from communicating with the first dispensing channel 15. The thickness of the head 1, the depth of the brush hole 14, the distance between the bottom wall of the brush hole 14 and the first dispensing channel 15, and the diameter of the first dispensing channel 15 can be the same as the corresponding parameters when only the protrusion 16 is used to prevent the second brush hole 142 from communicating with the first dispensing channel 15.

[0057] Alternatively, when setting the head 1 structure, the mounting surface 11 can protrude relative to the rod 2 along the thickness direction of the head 1 to form a protrusion 16. Simultaneously, the first ointment outlet channel 15 can be offset relative to the second ointment outlet channel 21, and the back surface 111 can protrude relative to the rod 2 along the thickness direction of the head 1. In this case, the arrangement of the protrusion 16 and the offset of the first ointment outlet channel 15 work together to ensure that the second brush bristle hole 142 meets the depth requirement for implanting the brush bristles 13 without communicating with the first ointment outlet channel 15. When the protrusion 16 and the offset of the first ointment outlet channel 15 work together, the amount of protrusion of the protrusion 16 along the thickness direction of the head 1 relative to the rod 2 and the amount of protrusion of the back surface 111 along the thickness direction of the head 1 relative to the rod 2 can be relatively small to balance the weight of the front and rear ends of the head 1.

[0058] At this time, the sum of the thickness of the protrusion 16 and the offset distance of the first dispensing channel 15 relative to the second dispensing channel 21 can be the same as or similar to the first thickness. The thickness of the head 1, the depth of the brush hole 14, the distance between the bottom wall of the brush hole 14 and the first dispensing channel 15, and the diameter of the first dispensing channel 15 can be the same as the corresponding parameters when only the protrusion 16 is used to prevent the second brush hole 142 from communicating with the first dispensing channel 15.

[0059] Reference Figure 7 In some specific embodiments, the brush pores 14 can be divided into soft pores 143 and hard pores 144. Specifically, among the multiple brush pores 14, a portion of the brush pores 14 are soft pores 143, and a portion of the brush pores 14 are hard pores 144. The soft pores 143 are used to implant soft bristles 13, and the hard pores 144 are used to implant hard bristles 13.

[0060] Soft pores 143 can be located on both sides of the dispensing valve 12 along the width direction of the head 1, for example, soft pores 143 are located on the left and right sides of the head 1. Hard pores 144 can be located on both sides of the length direction of the head 1 of the dispensing valve 12, for example, hard pores 144 are located on the inner side of the head 1 and the upper and lower sides of the head 1. That is, among the bristles 13 of the head 1, the bristles 13 located on the leftmost and outermost sides of the head 1 are soft bristles, while the bristles 13 located in the middle and on both sides of the head 1 are hard bristles. Among them, the first bristle pores 141 can all be hard pores 144, and a portion of the second bristle pores 142 are soft pores 143, and the other portion are hard pores 144.

[0061] When using head 1 for teeth cleaning, the length of head 1 is aligned with or nearly aligned with the direction of tooth alignment. At this time, the bristles 13 located in the middle and on both sides of head 1 primarily contact the teeth to clean them. Therefore, setting the bristles 13 in the middle and on both sides of head 1 to be stiff bristles can increase the cleaning effect on teeth. The leftmost and outermost bristles 13 of head 1 may come into contact with the gums. When the leftmost and rightmost bristles 13 of head 1 are set to soft bristles, the soft bristles cause less or virtually no damage to the gums, thus protecting them.

[0062] In other embodiments, the brush pores 14 may also be soft pores 143, which are entirely used for implanting soft bristles, or the brush pores 14 may be hard pores 144, which are entirely used for implanting hard bristles.

[0063] Reference Figure 1The present invention also provides an electric toothbrush, including a toothpaste container 200, a handle 300, and the aforementioned toothbrush head 100. The electric toothbrush has a connecting channel extending from the toothpaste container 200 to the toothbrush head 100 via a first toothpaste dispensing channel 15. A portion of the connecting channel may be located within the handle 300, and another portion may be located within the toothbrush head 100 via a second toothpaste dispensing channel 21. A peristaltic pump and a motor may be located within the handle 300. The peristaltic pump drives the toothpaste to flow, allowing it to flow from the toothpaste container 200 to the connecting channel, and the toothpaste can flow through the connecting channel into the first toothpaste dispensing channel 15 and finally be discharged from the toothpaste dispensing valve 12. The motor drives the toothbrush head 100 to vibrate, facilitating the cleaning of teeth.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the invention without departing from the principles and spirit of the invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A toothbrush head, characterized in that, Includes a head (1), on which a toothpaste dispensing valve (12) and bristles (13) are provided on the mounting surface (11) of the head (1), and a first toothpaste dispensing channel (15) extending to the toothpaste dispensing valve (12) is provided inside the head (1), the first toothpaste dispensing channel (15) being used for toothpaste flow; The head (1) is provided with a plurality of brush holes (14) formed by a recess in the mounting surface (11). The brush holes (14) are located around the cream dispensing valve (12), and the brush bristles (13) are inserted into the brush holes (14). Among the plurality of brush holes (14), there is a second brush hole (142). Along the thickness direction of the head (1), the recessed direction of the second brush hole (142) overlaps with the projection of the first cream dispensing channel (15) on the same plane. Along the thickness direction of the head (1), the recessed depth of the second brush hole (142) is less than the distance between the position of the second brush hole (142) formed by the mounting surface (11) and the first cream dispensing channel (15).

2. The toothbrush head according to claim 1, characterized in that, It also includes a rod (2) connected to the head (1), the rod (2) being used to connect to the handle (300); one side of the head (1) protrudes relative to the rod (2) along the thickness direction of the head (1) and forms a protrusion (16) having the mounting surface (11).

3. The toothbrush head according to claim 2, characterized in that, The mounting surface (11) is the surface of the protrusion (16), and the mounting surface (11) protrudes relative to the rod (2) along the thickness direction of the head (1) to form the protrusion (16).

4. The toothbrush head according to claim 2, characterized in that, The mounting surface (11) includes a first part (112) and a second part (113), wherein the first part (112) protrudes relative to the rod (2) along the thickness direction of the head (1) to form the protrusion (16).

5. The toothbrush head according to claim 2, characterized in that, The thickness of the protrusion (16) is 0.2 to 0.25 times the outer diameter of the connection between the rod (2) and the head (1); And / or, the depth of the brush bristle pores (14) is 0.35 to 0.4 times the thickness of the head (1); And / or, the distance between the bottom wall of the brush bristle hole (14) and the first paste outlet channel (15) is 0.35 to 0.4 times or 0.05 to 0.1 times the thickness of the head (1); And / or, the diameter of the first ointment outlet channel (15) is 0.21 to 0.27 times the thickness of the head (1).

6. The toothbrush head according to claim 5, characterized in that, The thickness of the protrusion (16) is 1.3mm to 1.8mm; the outer diameter of the connection between the rod (2) and the head (1) is 6.6mm to 7.2mm; the depth of the brush hole (14) is 2.9mm to 3.5mm; the distance between the bottom wall of the brush hole (14) and the first paste outlet channel (15) is 0.4mm to 0.8mm; the thickness of the head (1) is 8.2mm to 8.8mm; and the diameter of the first paste outlet channel (15) is 1.7mm to 2.3mm.

7. The toothbrush head according to claim 1, characterized in that, It also includes a rod (2) connected to the head (1), the rod (2) being used to connect to the toothbrush handle (300); the rod (2) is provided with a second toothbrush outlet channel (21) communicating with the first toothbrush outlet channel (15), the first toothbrush outlet channel (15) being offset relative to the second toothbrush outlet channel (21) in a direction away from the mounting surface (11).

8. The toothbrush head according to claim 1, characterized in that, It also includes a rod (2) connected to the head (1), the rod (2) being used to connect to the toothbrush handle (300), the rod (2) being provided with a second toothbrush dispensing channel (21) communicating with the first toothbrush dispensing channel (15); one side of the head (1) protrudes relative to the rod (2) along the thickness direction of the head (1) and forms a protrusion (16) having the mounting surface (11), and the first toothbrush dispensing channel (15) is offset relative to the second toothbrush dispensing channel (21) in a direction away from the mounting surface (11).

9. The toothbrush head according to claim 1, characterized in that, The bristles (13) are all inserted into the bristle holes (14) to be fixed to the head (1). The paste dispensing valve (12) is adjacent to and spaced apart from the bristles (13). The space between the paste dispensing valve (12) and any adjacent bristles (13) is open. The bristles (13) around the paste dispensing valve (12) form a paste dispensing space (131), which is used to accommodate the paste discharged from the paste dispensing valve (12).

10. An electric toothbrush, characterized in that, The electric toothbrush includes a toothpaste container (200), a handle (300), and a toothbrush head (100) as described in any one of claims 1 to 9. The electric toothbrush is provided with a connecting channel for a first toothpaste dispensing channel (15) extending from the toothpaste container (200) to the toothbrush head (100), wherein the toothpaste in the toothpaste container (200) can flow into the first toothpaste dispensing channel (15) through the connecting channel and be discharged from the toothpaste dispensing valve (12).

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