Brush head of electric toothbrush and electric toothbrush

Abstract

The utility model discloses a brush head of an electric toothbrush and the electric toothbrush, and the brush head comprises a brush plate component and a brush rod component. The brush plate component comprises a brush plate and bristles, the brush plate is provided with a bristle planting area, the bristles are provided with free ends and fixed ends, and the bristles are fixed to the bristle planting area through the fixed ends. The brush rod component at least comprises a brush rod which comprises a first connecting rod, a second connecting rod and a third connecting rod; wherein the first connecting rod is connected with the bristles; the third connecting rod is used for being connected with a driving assembly of the electric toothbrush, the second connecting rod is connected between the first connecting rod and the third connecting rod, and the first connecting rod deviates towards the side away from the free ends of the bristles relative to the third connecting rod in the direction perpendicular to the brush plate, so that the first connecting rod and the third connecting rod have a height difference in the direction perpendicular to the brush plate. According to the brush head, shaking of the brush head in the using process can be effectively reduced, and then the user experience of a user in the tooth brushing process is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of personal care technology, and in particular to a brush head of an electric toothbrush and an electric toothbrush. Background Art

[0002] The center of gravity of the electric toothbrush head is usually relatively forward. After the electric toothbrush and the brush head are adapted for use, the electric toothbrush will consume more power, affecting the life of the electric toothbrush motor. Moreover, since the center of gravity of the brush head is relatively forward, the brush head will shake significantly during use, resulting in a poor brushing experience. Utility Model Content

[0003] The main purpose of the embodiments of the present application is to provide an electric toothbrush head and an electric toothbrush, aiming to effectively reduce the shaking of the brush head during use, thereby effectively improving the user experience of the user during the brushing process.

[0004] In a first aspect, the present application provides a brush head for an electric toothbrush, comprising:

[0005] The brush plate component includes a brush plate and bristles, wherein the brush plate has a bristle planting area, the bristles have a free end and a fixed end, and the bristles are fixed to the bristle planting area through the fixed end;

[0006] The brush rod component comprises at least a brush rod, wherein the brush rod comprises a first connecting rod, a second connecting rod and a third connecting rod;

[0007] In which, the first connecting rod is connected to the bristles; the third connecting rod is used to connect to the drive assembly of the electric toothbrush, the second connecting rod is connected between the first connecting rod and the third connecting rod, and the first connecting rod is offset relative to the third connecting rod in a direction perpendicular to the brush plate toward the side of the free end away from the bristles, so that the first connecting rod and the third connecting rod have a height difference in the direction perpendicular to the brush plate.

[0008] It can be seen from the technical solution provided by the present application that the brush head of the electric toothbrush provided by the present application is provided with bristles on a brush plate component, and a brush plate component with bristles is connected through a brush rod component, and the brush rod of the brush rod component includes a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod is used to connect the brush plate component, the third connecting rod is used to connect the driving assembly of the electric toothbrush, and the second connecting rod is provided between the first connecting rod and the third connecting rod, and after the first connecting rod and the third connecting rod are connected through the second connecting rod, the first connecting rod is vertically connected to the brush plate component. In the direction of the brush plate, the third connecting rod is offset toward the free end away from the bristles, so that the first connecting rod and the third connecting rod have a height difference in the direction of the brush plate perpendicular to the brush plate component, so that the center of gravity of the brush head is located on the central axis of the third connecting rod. After the brush head is connected to the output shaft of the driving assembly, the center of gravity of the brush head is on the output shaft of the driving assembly or the extension line of the output shaft. Finally, during the rotation or deflection process, the center of gravity of the brush head is on the output shaft or the extension line of the output shaft, which can effectively reduce the shaking of the brush head and improve the user experience of the user during brushing.

[0009] In some embodiments, a height difference between the first connecting rod and the third connecting rod in a direction perpendicular to the brush plate is H, and satisfies 2.5 mm ≥ D ≥ 1 mm.

[0010] In this embodiment, the height difference between the first connecting rod and the third connecting rod in the direction perpendicular to the brush plate is set within a preset range, so that the center of gravity of the brush head is located on the central axis of the third connecting rod while miniaturizing the brush head structure.

[0011] In some embodiments, projections of the first link, the second link, and the third link in a first direction extend in the same direction, and the first direction is the extending direction of the third link.

[0012] In this embodiment, based on the projections of the first connecting rod, the second connecting rod and the third connecting rod in the direction perpendicular to the brush plate extending in the same direction, the wind resistance of the brush head during deflection can be effectively reduced, thereby reducing the shaking of the brush head during use.

[0013] In some embodiments, the second connecting rod includes a first connecting end and a second connecting end opposite each other, the first connecting end being used to connect to the first connecting rod, and the second connecting end being used to connect to the third connecting rod. After the first connecting rod and the third connecting rod are connected via the second connecting rod, a first angle is formed between an extension direction of the second connecting rod and an extension direction of the first connecting rod, and a second angle is formed between an extension direction of the third connecting rod and an extension direction of the second connecting rod. Optionally, the first angle is equal to the second angle.

[0014] In this embodiment, the second connecting rod is a straight rod. After the second connecting rod connects the first connecting rod and the third connecting rod, a bending portion is formed between the first connecting rod and the second connecting rod, and a bending portion is formed between the second connecting rod and the third connecting rod, so that the first connecting rod and the third connecting rod have a height difference in the direction perpendicular to the brush plate, so that the center of gravity of the brush head is on the output shaft of the drive assembly or the extension line of the output shaft. Finally, during the rotation or deflection process of the brush head, the center of gravity is on the output shaft or the extension line of the output shaft, which can effectively reduce the shaking of the brush head and improve the user experience of the user during brushing.

[0015] In some embodiments, the second connecting rod includes a first connecting end and a second connecting end relative to each other, the first connecting end is used to connect the first connecting rod, and the second connecting end is used to connect the third connecting rod, wherein at least one arc-shaped connecting portion or bending portion is formed between the first connecting end and the second connecting end, so that after the first connecting rod and the third connecting rod are connected through the second connecting rod, the first connecting rod and the third connecting rod have a height difference in a direction perpendicular to the brush plate.

[0016] In this embodiment, the second connecting rod has at least one arc-shaped connecting portion or a bent portion. After the second connecting rod connects the first connecting rod and the third connecting rod, the first connecting rod and the third connecting rod have a height difference in the direction perpendicular to the brush plate, so that the center of gravity of the brush head is on the output shaft of the drive assembly or the extension line of the output shaft. Finally, during the rotation or deflection process, the center of gravity of the brush head is on the output shaft or the extension line of the output shaft, which can effectively reduce the shaking of the brush head and improve the user experience of the user during brushing.

[0017] In some embodiments, the length of the first link is L1, the length of the second link is L2, and the length of the third link is L3; wherein, the length L3 of the third link is greater than or equal to the length L2 of the second link, and the length L2 of the second link is greater than or equal to the length L1 of the first link; or, the length L3 of the third link is greater than or equal to the length L1 of the first link, and the length L1 of the first link is greater than or equal to the length L2 of the second link.

[0018] In some embodiments, the brush head further includes a soft rubber part, which covers a partial area of ​​the brush rod part or a partial area of ​​the brush plate part; wherein the partial area of ​​the brush rod part at least includes an area in the back area of ​​the first connecting rod that overlaps with the projection of the bristle area of ​​the brush plate in a direction perpendicular to the brush plate.

[0019] Optionally, the soft rubber component further covers at least a portion of a peripheral area of ​​the first connecting rod, and the peripheral area is connected to a back area of ​​the first connecting rod.

[0020] Optionally, the brush plate includes a first surface, a second surface and a third surface, the first surface and the second surface are arranged opposite to each other, the third surface is located between the first surface and the second surface and connects the first surface and the second surface; the hair planting area is located on the first surface, and the second surface is fixedly connected to the connection adaptation area of ​​the first connecting rod; the soft rubber part at least covers the second adaptation area and the third surface.

[0021] Optionally, the soft rubber component also covers at least a portion of the second connecting rod and the third connecting rod.

[0022] In this embodiment, the brush head is also provided with a soft rubber part. By covering a part of the brush rod part or a part of the brush plate part with the soft rubber part, the soft rubber part can absorb part of the noise caused by the vibration of the brush head. When the part of the brush head provided with the soft rubber part touches the teeth, the soft properties of the soft rubber part can achieve touch buffering, thereby reducing the discomfort caused by the collision between the brush head and the teeth, thereby improving the user experience of the user during brushing.

[0023] In some embodiments, the distance between the free end of the bristle and the surface of the third connecting rod near the free end of the bristle is greater than or equal to 5 mm. By setting a reasonable bristle length, the probability of the brush plate of the brush head hitting the teeth during brushing can be effectively reduced, and the cleaning power of the brush head on the teeth can be improved.

[0024] In a second aspect, the present application also provides an electric toothbrush, comprising: the aforementioned brush head and a main unit provided with a driving assembly.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of the brush head of an electric toothbrush provided in one embodiment of the present application;

[0028] Figure 2 A schematic diagram of the exploded structure of a brush head provided in one embodiment of the present application;

[0029] Figure 3 A schematic cross-sectional view of a brush head provided in one embodiment of the present application;

[0030] Figure 4 A schematic diagram of the back structure of a brush head provided in one embodiment of the present application;

[0031] Figure 5 A schematic cross-sectional view of a brush head provided in another embodiment of the present application;

[0032] Figure 6 This is a schematic cross-sectional view of a brush head with a soft rubber component provided in another embodiment of the present application;

[0033] Figure 7 for Figure 6 A schematic diagram of the back structure of the brush head provided in the embodiment;

[0034] Figure 8 A schematic diagram of the three-dimensional structure of an electric toothbrush provided in an embodiment of the present application;

[0035] Figure 9 This is a schematic diagram of the three-dimensional structure of the main body of the electric toothbrush provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] In the description of this application, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0038] With the improvement of living standards, electric toothbrushes have gradually become part of people's daily lives. However, many manufacturers currently do not pay much attention to the mass distribution of electric toothbrush heads, resulting in a relatively random distribution of brush head mass. The center of gravity of common electric toothbrush heads is relatively forward. After the electric toothbrush and brush head are adapted for use, it will lead to higher power consumption of the electric toothbrush, affecting the life of the electric toothbrush motor. In addition, because the center of gravity of the brush head is relatively forward, the brush head will shake significantly during use, resulting in a poor brushing experience.

[0039] In order to solve the above technical problems, the present application provides an electric toothbrush head and an electric toothbrush, which aim to effectively reduce the shaking of the brush head during use, thereby effectively improving the user experience during the user's brushing process.

[0040] Some implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. The following embodiments and features in the embodiments may be combined with each other unless there is any conflict.

[0041] See also Figures 1 to 4 , Figure 1 This is a schematic diagram of the three-dimensional structure of the brush head of an electric toothbrush provided in one embodiment of the present application. Figure 2 Schematic diagram of the explosion structure of the brush head.

[0042] like Figure 1 and Figure 2 As shown, a brush head 10 of an electric toothbrush includes a brush plate component 11 and a brush rod component 12. The brush plate component 11 includes a brush plate 111 and bristles 112. The brush plate 111 has a bristle planting area 1111, and the bristles 112 are fixed to the bristle planting area 1111 of the brush plate 111. For example, the bristle planting area 1111 of the brush plate 111 is provided with a plurality of bristle planting holes. The bristles 112 have opposing free ends and fixed ends. The fixed ends of the bristles 112 are fixedly connected to the bristle planting holes in the bristle planting area 1111 of the brush plate 111, thereby achieving a fixed connection between the bristles 112 and the brush plate 111.

[0043] Optionally, the brush plate 111 is a non-metallic brush plate, which fixes the bristles 112 to avoid the influence of rust on the brush head caused by the metal brush plate fixing the bristles 112. It is understood that the non-metallic brush plate includes but is not limited to a plastic brush plate made of plastic materials such as ABS and PC.

[0044] Optionally, the brush plate 111 is a metal brush plate, and the bristles 112 are fixed by the metal brush plate to increase the weight of the brush head. It can be understood that the metal brush plate includes alloy, copper, and aluminum. Figures 2 to 5 As shown, the brush rod component 12 includes a brush rod 121 including a first connecting rod 1211, a second connecting rod 1212 and a third connecting rod 1213. Optionally, the brush plate 111 can fix the bristles 112 in a manner with or without copper planting.

[0045] Optionally, the first connecting rod 1211 is connected to the bristles 112. Exemplarily, the first connecting rod 1211 is integrally formed with the brush plate 111 of the brush plate component 11, and a bristle planting hole is provided in the bristle planting area 1111 of the brush plate 111, and the bristles 112 are fixed by the bristle planting hole, or the first connecting rod 1211 and the brush plate 111 are separately provided, and the first connecting rod 1211 is connected to the brush plate 111 away from the side where the bristles 112 are provided by gluing, ultrasonic welding, etc.

[0046] The third connecting rod 1213 is used to connect with the driving assembly of the electric toothbrush, and the second connecting rod 1212 is connected between the first connecting rod 1211 and the third connecting rod 1213, and the first connecting rod 1211 is offset relative to the third connecting rod 1213 in a direction perpendicular to the brush plate 111 toward the free end side away from the bristles 112, so that the first connecting rod 1211 and the third connecting rod 1213 have a height difference in a direction perpendicular to the brush plate 111, so that the center of gravity of the brush head 10 is located on the central axis of the third connecting rod 1213. When the driving assembly of the electric toothbrush drives the brush head to swing or move up and down, the central axis of the third connecting rod 1213 coincides with the axis of the driving shaft of the driving assembly. When the center of gravity of the brush head is located on the central axis of the third connecting rod 1213, when the brush head is swinging or moving up and down, it can avoid large vibration or offset of the brush head, reduce the shaking of the brush head during movement, and thereby reduce the power loss of the electric toothbrush.

[0047] Exemplarily, the first connecting rod 1211 is used to connect the brush plate component 11, the third connecting rod 1213 is used to connect the driving assembly of the electric toothbrush, and the second connecting rod 1212 is arranged between the first connecting rod 1211 and the third connecting rod 1213 to connect the first connecting rod 1211 and the third connecting rod 1213.

[0048] After the first link 1211 and the third link 1313 are connected by the second link 1212, the first link 1211 is offset relative to the third link 1213 to the side away from the bristles 122, so that the first link 1211 and the third link 1213 have a height difference D in the direction perpendicular to the brush plate 111, that is, the first link 1211 and the third link 1213 have a height difference D in the second direction, so that the center of gravity of the brush head is located on the central axis of the third link 1213, that is, the extension directions of the first link 1211 and the third link 1213 are not on the same straight line, as shown in FIG. Figure 3 shown.

[0049] Optionally, the height difference between the first connecting rod 1211 and the third connecting rod 1213 in a direction perpendicular to the brush plate is D, and satisfies 2.5 mm ≥ D ≥ 1 mm. For example, the height difference D can be, but is not limited to, 1 mm, 1.2 mm, 1.5 mm, 2 mm, or 2.5 mm.

[0050] Optionally, the length of the first connecting rod 1211 is L1, the length of the second connecting rod 1212 is L2, and the length of the third connecting rod 1213 is L3. The length L3 of the third connecting rod 1213 is greater than or equal to the length L2 of the second connecting rod 1212, and the length L2 of the second connecting rod 1212 is greater than or equal to the length L1 of the first connecting rod 1211. Alternatively, the length L3 of the third connecting rod 1213 is greater than or equal to the length L1 of the first connecting rod 1211, and the length L1 of the first connecting rod 1211 is greater than or equal to the length L2 of the second connecting rod 1212.

[0051] It can be understood that the length of the first connecting rod 1211 refers to the extension length of the first connecting rod 1211 in the first direction. Similarly, the length of the second connecting rod 1212 refers to the extension length of the second connecting rod 1212 in the first direction, and the length of the third connecting rod 1213 refers to the extension length of the third connecting rod 1213 in the first direction. After the brush head 10 provided in the embodiment of the present application adopts the above-mentioned embodiment, the center of gravity of the brush head 10 can be on the output shaft of the drive assembly used to drive the brush head to rotate or deflect, or on the extension line of the output shaft. After the brush head 10 is connected to the output shaft of the drive assembly, the brush head 10 is driven by the drive assembly to rotate or deflect. Since the center of gravity is on the output shaft or the extension line of the output shaft, the shaking of the brush head can be effectively reduced, thereby improving the user experience during the brushing process.

[0052] Furthermore, the height difference D between the first link 1211 and the third link 1213 in a direction perpendicular to the brush plate 111 is set within a preset range, so that the center of gravity of the brush head 100 is located on the central axis of the third link 1213 while miniaturizing the structure of the brush head.

[0053] In some embodiments, in order to reduce the resistance of the brush head during rotation or deflection, so as to reduce the shaking of the brush head caused by excessive resistance or inertia during use, the projections of the first link 1211, the second link 1212 and the third link 1213 in the direction perpendicular to the brush plate 111 have the same extension direction, and the first link 1211, the second link 1212 and the third link 1213 all extend in the first direction, that is, the extension directions of the projections of the first link 1211, the second link 1212 and the third link 1213 in the direction perpendicular to the brush plate 111 are on the same straight line in the first direction, that is, the projection of the brush rod 12 in the first direction is a straight line, that is, the projection in the extension direction of the third link 1213 is a straight line, as shown in FIG. Figure 4 shown.

[0054] In some embodiments, after the first link 1211 and the third link 1313 are connected by the second link 1212, the first link 1211 and the third link 1213 have a height difference D in a direction perpendicular to the brush plate 111. A specific implementation method may be: the second link 1212 includes a first connecting end and a second connecting end relative to each other, the first connecting end is used to connect the first link 1211, and the second connecting end is used to connect the third link 1213, and after the first link 1211 and the third link 1213 are connected by the second link 1212, there is a first angle α between the extension direction of the second link 1212 and the extension direction of the first link 1211, and there is a second angle β between the extension direction of the third link 1213 and the extension direction of the second link 1212. Optionally, the first angle α is equal to the second angle β, as shown in FIG. Figure 3 and Figure 4 shown.

[0055] That is, at least the second link 1212 is a straight rod. After the second link 1212 connects the first link 1211 and the third link 1213, a bending portion is formed between the first link 1211 and the second link 1212, and a bending portion is formed between the second link 1212 and the third link 1213, so that the first link 1211 and the third link 1213 have a height difference in the direction perpendicular to the brush plate 111, so that the center of gravity of the brush head 10 can be on the output shaft of the driving component for driving the brush head to rotate or deflect or on the extension line of the output shaft, and finally, when the brush head 10 rotates or deflects under the drive of the driving component, since the center of gravity is on the output shaft or the extension line of the output shaft, the shaking of the brush head can be effectively reduced, thereby improving the user experience of the user during brushing.

[0056] See also Figure 5 , after the first link 1211 and the third link 1313 are connected by the second link 1212, the specific implementation method of the first link 1211 and the third link 1213 having a height difference D in a direction perpendicular to the brush plate 111 can be: the second link 1212 includes a first connecting end and a second connecting end relative to each other, the first connecting end is used to connect the first link 1211, and the second connecting end is used to connect the third link 1213, wherein at least one arc-shaped connecting portion or bending portion is formed between the first connecting end and the second connecting end, so that after the first link 1211 and the third link 1213 are connected by the second link 1212, the first link 1211 and the third link 1213 have a height difference in a direction perpendicular to the brush plate 111, and the first link 1211 is offset relative to the third link 1213 to the side away from the bristles 122, so that the center of gravity of the brush head is located on the central axis of the third link 1213.

[0057] Unlike the previous embodiment, in this embodiment, the second connecting rod 1212 has at least one arc-shaped connecting portion or a bent portion. After the second connecting rod 1212 connects the first connecting rod 1211 and the third connecting rod 1213, the first connecting rod 1211 and the third connecting rod 1213 have a height difference in the direction perpendicular to the brush plate 111, so that the center of gravity of the brush head 10 can be on the output shaft of the driving assembly for driving the brush head to rotate or deflect or on the extension line of the output shaft. After the brush head is connected to the output shaft of the driving assembly, the brush head 10 is finally rotated or deflected under the drive of the driving assembly. Since the center of gravity is on the output shaft or the extension line of the output shaft, the shaking of the brush head can be effectively reduced, thereby improving the user experience of the user during brushing.

[0058] See also Figure 6 and Figure 7In some embodiments, the brush head 10 further includes a soft rubber part 13, which covers a partial area of ​​the brush rod component 12, wherein the partial area of ​​the brush rod component 12 includes at least an area in the back area of ​​the first connecting rod 1211 that overlaps with the projection of the bristle planting area of ​​the brush plate 111 in a direction perpendicular to the brush plate 111.

[0059] For example, the soft rubber part 13 covers the X part of the back area of ​​the first connecting rod 1211, and the X part of the back area of ​​the first connecting rod 1211 coincides with the projection of the hair planting area of ​​the brush plate 111 in the second direction. Figure 7 shown.

[0060] Optionally, the soft rubber member 13 further covers at least a portion of the peripheral area of ​​the first connecting rod 1211, and the peripheral area is connected to the back area of ​​the first connecting rod 1211. For example, the soft rubber member 13 further covers a Y portion of the peripheral area of ​​the first connecting rod 1211, and the Y portion is connected to an X portion of the back area of ​​the first connecting rod 1211, as shown in FIG. Figure 7 shown.

[0061] Optionally, the soft plastic member 13 also covers at least a portion of the second connecting rod 1212 and the third connecting rod 1213. For example, the soft plastic member 13 also covers the outer surface of the second connecting rod 1212 and the outer surface of the third connecting rod 1213. Figure 6 shown.

[0062] In some embodiments, the soft rubber part 13 also covers a partial area of ​​the brush plate component 11. For example, the brush plate 111 includes a first surface 1112, a second surface 1114 and a third surface 1113. The first surface 1112 and the second surface 1114 are arranged opposite to each other, and the third surface 1113 is located between the first surface 1112 and the second surface 1114 and connects the first surface 1112 and the second surface 1114. The hair planting area 1111 is located on the first surface 1112, and the second surface 1114 is fixedly connected to the connection adaptation area 1214 of the first connecting rod 1211. The soft rubber part 13 covers at least the third surface 1113 of the brush plate 111, or covers a partial area of ​​the third surface 1113 of the brush plate 111, such as Figure 6 shown.

[0063] In this embodiment, the brush head 10 is also provided with a soft rubber part 13. By covering a partial area of ​​the brush rod part 12 or a partial area of ​​the brush plate 111 part with the soft rubber part 13, the soft rubber part 13 can absorb part of the noise caused by the vibration of the brush head. When the partial area of ​​the brush head provided with the soft rubber part 13 touches the teeth, the soft properties of the soft rubber part 13 can achieve touch buffering, thereby reducing the discomfort caused by the collision between the brush head and the teeth, thereby improving the user experience of the user during the brushing process.

[0064] In some embodiments, the thickness of a single layer of the soft rubber member 13 covering the brush rod component 12 and / or covering the brush rod component 12 is 0.4mm-1.6mm. Based on the single layer thickness of the soft rubber member 13 covering the brush rod component 12 being 0.4mm-1.6mm, that is, the single layer thickness of the soft rubber layer formed by the soft rubber member 13 covering the brush rod component 12 is 0.4mm-1.6mm, if the thickness of the soft rubber member 13 is too thick, the weight of the brush head 10 will be too heavy, resulting in insufficient vibration power of the electric toothbrush. If the thickness of the soft rubber member 13 is too thin, the shock-absorbing and buffering effect of the brush head 10 will be affected. Therefore, setting the thickness of the soft rubber member 13 within a reasonable range can effectively improve the brushing comfort of the user during the brushing process.

[0065] In some embodiments, the brush rod 121 is connected to the drive assembly of the electric toothbrush in such a manner that the third connecting rod 1213 of the brush rod 121 is provided with a drive connection portion, and the brush rod 121 forms a structural engagement or threaded fit with the drive assembly of the electric toothbrush through the drive connection portion, so that the brush head 10 can be connected to the drive assembly of the electric toothbrush through the brush rod 121.

[0066] For example, the brush rod component 12 of the brush head 10 further includes a connector 123, which is disposed at an end of the third connecting rod 1213 away from the connection with the second connecting rod 1212. The brush head 10 is detachably connected to the drive assembly of the electric toothbrush via the connector 123. The manner in which the connector 123 is detachably connected to the drive assembly of the electric toothbrush includes, but is not limited to, a structural snap connection, a threaded connection, an interference fit, and the like.

[0067] It is understandable that the connector 123 can be a metal connector, an alloy connector or a non-metal connector, which is not limited here.

[0068] In this embodiment, the connector 123 is provided and detachably connected to the driving assembly of the electric toothbrush, thereby facilitating the replacement of the brush head of the electric toothbrush.

[0069] In some embodiments, a distance W between the free end of the bristle 112 and the surface of the third connecting rod 1213 close to the free end of the bristle 112 is greater than or equal to 5 mm.

[0070] like Figure 3 As shown, when the third connecting rod 1213 is not covered with the soft rubber part 13, the distance W between the free end of the bristle 112 and the surface of the third connecting rod 1213 close to the free end of the bristle 112 is greater than or equal to 5 mm.

[0071] like Figure 6As shown, when the third connecting rod 1213 is covered with the soft plastic part 13, the distance W between the free end of the bristle 112 and the surface of the third connecting rod 1213 covering the soft plastic part 13 close to the free end of the bristle 112 is greater than or equal to 5 mm.

[0072] In this embodiment, by setting a reasonable length of the bristles 112, the probability of the brush plate 111 of the brush head 10 hitting the teeth during the brushing process is effectively reduced, and the cleaning power of the brush head 10 on the teeth can be improved.

[0073] See also Figure 8 and Figure 9 The present application also provides an electric toothbrush 100 including a main unit 20 and a brush head 10, wherein the main unit 20 includes a drive assembly 21 and a control assembly 22 connected to the drive assembly 21. The drive assembly 21 is detachably connected to the brush head 10 and is used to drive the brush head 10 to move. The user can trigger the control assembly 22 by pressing, sliding, pushing or pulling, etc., so that the control assembly 22 controls the drive assembly 21 to perform corresponding actions.

[0074] Optionally, the manner in which the drive assembly 21 and the brush head 10 are detachably connected includes but is not limited to structural engagement and threaded connection.

[0075] Illustratively, the control assembly 22 is connected to the drive assembly 21 via a connecting wire to supply power to the drive assembly 21 to drive the drive assembly 21 to move, thereby driving the brush head 10 to operate through the drive assembly 21. The control assembly 22 includes a circuit board and a power supply module, which includes but is not limited to a battery. The circuit board can be a single-sided board, a double-sided board, or a multi-layer board. This application does not specifically limit the type, model, and size of the circuit board.

[0076] It should be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0077] It should also be understood that the term "and / or" used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations. It should be noted that, in this article, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "including a..." does not exclude the presence of other identical elements in the process, method, article or system that includes the element.

[0078] The serial numbers of the embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments. The above description is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection of the claims.

Claims

1. A brush head for an electric toothbrush, characterized in that: include: The brush plate component includes a brush plate and bristles, wherein the brush plate has a bristle planting area, the bristles have a free end and a fixed end, and the bristles are fixed to the bristle planting area through the fixed end; The brush rod component comprises at least a brush rod, wherein the brush rod comprises a first connecting rod, a second connecting rod and a third connecting rod; In which, the first connecting rod is connected to the bristles; the third connecting rod is used to connect to the drive assembly of the electric toothbrush, the second connecting rod is connected between the first connecting rod and the third connecting rod, and the first connecting rod is offset relative to the third connecting rod in a direction perpendicular to the brush plate toward the side of the free end away from the bristles, so that the first connecting rod and the third connecting rod have a height difference in the direction perpendicular to the brush plate.

2. The brush head according to claim 1, characterized in that A height difference between the first connecting rod and the third connecting rod in a direction perpendicular to the brush plate is D, and satisfies 2.5 mm ≥ D ≥ 1 mm.

3. The brush head according to claim 1, characterized in that Projections of the first connecting rod, the second connecting rod, and the third connecting rod in a first direction extend in the same direction, and the first direction is the extending direction of the third connecting rod.

4. The brush head according to claim 3, characterized in that The second connecting rod includes a first connecting end and a second connecting end relative to each other, the first connecting end is used to connect the first connecting rod, and the second connecting end is used to connect the third connecting rod. After the first connecting rod and the third connecting rod are connected through the second connecting rod, there is a first angle between the extension direction of the second connecting rod and the extension direction of the first connecting rod, and there is a second angle between the extension direction of the third connecting rod and the extension direction of the second connecting rod.

5. The brush head according to claim 4, characterized in that The first angle is equal to the second angle.

6. The brush head according to claim 3, characterized in that The second connecting rod includes a first connecting end and a second connecting end relative to each other, the first connecting end is used to connect the first connecting rod, and the second connecting end is used to connect the third connecting rod, wherein at least one arc-shaped connecting portion or bending portion is formed between the first connecting end and the second connecting end, so that after the first connecting rod and the third connecting rod are connected through the second connecting rod, the first connecting rod and the third connecting rod have a height difference in the direction perpendicular to the brush plate.

7. The brush head according to any one of claims 4 to 6, characterized in that: The length of the first connecting rod is L1, the length of the second connecting rod is L2, and the length of the third connecting rod is L3; The length L3 of the third connecting rod is greater than or equal to the length L2 of the second connecting rod, and the length L2 of the second connecting rod is greater than or equal to the length L1 of the first connecting rod; Alternatively, the length L3 of the third connecting rod is greater than or equal to the length L1 of the first connecting rod, and the length L1 of the first connecting rod is greater than or equal to the length L2 of the second connecting rod.

8. The brush head according to claim 1, characterized in that The distance between the free end of the bristle and the surface of the third connecting rod close to the free end of the bristle is greater than or equal to 5 mm.

9. The brush head according to claim 1, characterized in that The brush head further comprises a soft rubber part, wherein the soft rubber part covers a part of the brush rod part and / or covers a part of the brush plate part; Wherein, the partial area of ​​the brush rod component at least includes an area in the back area of ​​the first connecting rod that overlaps with a projection of the bristle planting area of ​​the brush plate in a direction perpendicular to the brush plate.

10. The brush head according to claim 9, characterized in that The soft rubber component also covers at least a portion of the peripheral area of ​​the first connecting rod, and the peripheral area is connected to the back area of ​​the first connecting rod.

11. The brush head according to claim 10, characterized in that The brush plate includes a first surface, a second surface and a third surface, the first surface and the second surface are arranged opposite to each other, and the third surface is located between the first surface and the second surface and connects the first surface and the second surface; The hair planting area is located on the first surface, the second surface is fixedly connected to the connection adaptation area of ​​the first connecting rod, and the soft rubber component at least covers the third surface.

12. The brush head according to claim 9, characterized in that The soft rubber component also covers at least a portion of the second connecting rod and the third connecting rod.

13. An electric toothbrush, characterized in that: include: A brush head according to any one of claims 1 to 12 and a host provided with a drive assembly.

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