Oral care element and electric oral cleaning appliance

Abstract

An oral care element (110) and an electric oral cleaning appliance (100). The oral care element (110) comprises a main body (10), a contact element carrier (20), a first contact element cluster (30), and a second contact element cluster (40). The first contact element cluster (30) and the second contact element cluster (40) of the oral care element (110) have a length difference, such that the first contact element cluster (30) and the second contact element cluster (40) do not interfere with each other during swing, thereby not affecting the vibration transfer efficiency of a driving assembly (121) coupled to the main body (10), and thus achieving a better cleaning effect.

Description

Oral care components and electric oral cleaning appliances

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on July 20, 2023, with application number 202310912435.2, and with the invention name “Oral Care Element and Electric Oral Care Appliance”, the Chinese patent application filed with the China Patent Office on July 20, 2023, with application number 202310899579.9, and with the invention name “Oral Care Element and Electric Oral Care Appliance”, and the Chinese patent application filed with the China Patent Office on July 20, 2023, with application number 202310902111.0, and with the invention name “Oral Care Element and Electric Oral Care Appliance”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of oral care appliances, and in particular to oral care elements and electric oral cleaning appliances. Background Art

[0004] An electric toothbrush is a commonly used oral care appliance. Its general structure consists of a toothbrush head and a handle. A filament cluster is located on the front surface of one end of the toothbrush head. The other end of the toothbrush head can be coupled to or detached from the handle, which houses a vibration motor. During use, the user couples the toothbrush head to the handle. When the vibration motor in the handle is activated, the vibration generated is transmitted through the toothbrush head to the filament cluster, causing it to oscillate at high speed. This high-speed oscillation removes food debris or stains from teeth or gums.

[0005] In the prior art, electric toothbrushes are usually provided with multiple bristle clusters. When the electric toothbrush is in operation, the high-speed swinging of adjacent bristle clusters will interfere with each other, resulting in a lower vibration transmission efficiency of the vibration motor and affecting the cleaning effect.

[0006] The bristle ratio is a key parameter for electric toothbrushes. A high bristle ratio results in higher water absorption, which increases the drying time after cleaning and facilitates bacterial growth. A low bristle ratio, on the other hand, can make the oral care element less soft and comfortable. Existing electric toothbrushes struggle to achieve both comfort and drying speed.

[0007] Summary of the Invention

[0008] In view of this, the present application provides an oral care element and an electric oral cleaning device to solve the problem of swing interference between the brush filament clusters when the electric toothbrush in the prior art is used.

[0009] In a first aspect, the present application provides an oral care element, comprising: a main body, the main body comprising a proximal end and a distal end extending along the axis of the main body, the distal end being used to couple with a drive assembly; a contact element carrier retained at the proximal end, the contact element carrier having a front surface, a first channel and a second channel respectively connected to the front surface, and a transverse axis passing through the center point of the front surface and perpendicular to the front surface; the first channel and the second channel are not connected to each other, and in the radial direction of the transverse axis passing through the first channel and the second channel at the same time, the inner edge of the first channel is located outside the outer edge of the second channel; a first contact element cluster passes through the first channel and extends from the front surface, the first contact element cluster extends along the extension direction of the transverse axis, and the end forms an almost continuous first cleaning area surface; the first contact element cluster is formed by a plurality of first contact elements, and the first contact elements are connected to the transverse axis The cross section perpendicular to the line has a maximum diameter or a maximum circumscribed circle diameter in the range of 3mil to 4mil; the second contact element cluster passes through the second channel and extends from the front surface, and the second contact element cluster extends along the extension direction of the transverse axis, and the end forms an almost continuous second cleaning area surface; the second contact element cluster is formed by multiple second contact elements, and the cross section of the second contact element perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter in the range of 4mil to 6mil; the contact element carrier exists in the cross section of the first channel and the second channel, and the difference between the maximum length of the first contact element extending from the front surface and the shortest length of the second contact element extending from the front surface does not exceed 3mm, or the difference between the maximum length of the second contact element extending from the front surface and the shortest length of the first contact element extending from the front surface in the cross section does not exceed 3mm.

[0010] Optionally, the contact element carrier comprises a plurality of disconnected first channels.

[0011] Optionally, the contact element carrier comprises a plurality of disconnected second channels.

[0012] Optionally, the cross-section of the first contact elements passing through some of the multiple first channels perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter of 3 mil, and the cross-section of the first contact elements passing through another part of the multiple first channels perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter of 4 mil.

[0013] Optionally, a cross section of the second contact element perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter of 5 mil.

[0014] Optionally, when the distal end is coupled to the driving assembly and driven by the driving assembly, the first contact element and the second contact element are driven to swing back and forth, and the setting of the first contact element cluster and the second contact element cluster satisfies the coefficient k, k = |A1-A2|÷L1, 1.6≦k≦2.4; wherein A1 is the swing amplitude of the first contact element, A2 is the swing amplitude of the second contact element, and L1 is the distance between the adjacent edges of the first channel and the second channel.

[0015] Optionally, a first projection length of a portion of the first contact element cluster extending out of the front surface on the transverse axis is in the range of 5mm to 12mm, and / or a second projection length of a portion of the second contact element cluster extending out of the front surface on the transverse axis is in the range of 5mm to 12mm.

[0016] Optionally, a first projection length of a portion of the first contact element cluster extending out of the front surface on the transverse axis is in a range of 6 mm to 11 mm.

[0017] Optionally, a second projection length of a portion of the second contact element cluster extending out of the front surface on the transverse axis is in a range of 8 mm to 13 mm.

[0018] Optionally, a first projection length of a portion of the first contact element cluster extending out of the front surface on the transverse axis is in a range of 8 mm to 10 mm.

[0019] Optionally, a second projection length of a portion of the second contact element cluster extending out of the front surface on the transverse axis is in a range of 8 mm to 10 mm.

[0020] Optionally, another first channel and / or second channel exists in an area with a width of 0.4 mm to 1.0 mm extending outward from the edge of the first channel as a baseline; and / or another second channel and / or first channel exists in an area with a width of 0.4 mm to 1.0 mm extending outward from the edge of the second channel as a baseline.

[0021] Optionally, another first channel and / or second channel exists in an area with a width of 0.6 mm to 0.8 mm extending outward from the edge of the first channel as a baseline; and / or another second channel and / or first channel exists in an area with a width of 0.6 mm to 0.8 mm extending outward from the edge of the second channel as a baseline.

[0022] Optionally, another first channel and / or second channel exists in an area extending outward by 0.7 mm in width with the edge of the first channel as the baseline; and / or another second channel and / or first channel exists in an area extending outward by 0.7 mm in width with the edge of the second channel as the baseline.

[0023] Optionally, the contact element carrier exists in the cross section of the adjacent first channel and the second channel, and the difference between the maximum length of the first contact element extending from the front surface and the shortest length of the second contact element extending from the front surface does not exceed 3 mm, or the difference between the maximum length of the second contact element extending from the front surface and the shortest length of the first contact element extending from the front surface in the cross section does not exceed 3 mm.

[0024] Optionally, the stiffness of the first contact element is less than or equal to that of the second contact element.

[0025] Optionally, in a cross section of the first contact element along its extension direction, the end extending from the front surface is tapered, and in a cross section of the second contact element along its extension direction, the end extending from the front surface is arc-shaped or nearly arc-shaped.

[0026] Optionally, a ratio of the sum of cross sections of the plurality of first contact elements at the front surface perpendicular to the transverse axis to an area enclosed by the edge of the first channel is between 0.65 and 0.85.

[0027] Optionally, a ratio of the sum of cross sections of the plurality of second contact elements at the front surface perpendicular to the transverse axis to an area enclosed by the edge of the second channel is between 0.65 and 0.85.

[0028] Optionally, a ratio of an area enclosed by the edge of the first channel to a sum of an area enclosed by the edge of the first channel and an area enclosed by the edge of the second channel is greater than or equal to 0.6.

[0029] Optionally, the ratio of the area enclosed by the edge of the second channel to the sum of the area enclosed by the edge of the first channel and the area enclosed by the edge of the second channel is greater than or equal to 0.1.

[0030] Optionally, the ratio of the area enclosed by the edge of the second channel to the sum of the area enclosed by the edge of the first channel and the area enclosed by the edge of the second channel is greater than or equal to 0.15.

[0031] Optionally, the maximum cross-sectional shape of the first contact element is a triangle, a rhombus, or a polygon with no less than four sides, and / or the maximum cross-sectional shape of the second contact element is a triangle, a rhombus, or a polygon with no less than four sides.

[0032] In the second aspect, the present application provides an electric oral cleaning device, comprising the above-mentioned oral care element and a gripping portion, the gripping portion comprising a shell for gripping, a driving assembly, an energy element, and a triggering element arranged inside the shell; the driving assembly is coupled to the oral care element, and if the triggering element is triggered, the energy element provides energy to the driving assembly, so that the driving assembly drives the oral care element to vibrate back and forth. Beneficial effects:

[0033] Utilizing the technical solution of this application, the length of the first contact element cluster and the length of the second contact element cluster of the oral care element differ, and the absolute value of this length difference does not exceed 3mm. This arrangement prevents interference between the first and second contact element clusters during swinging, thereby maintaining the vibration transmission efficiency of the drive assembly coupled to the main body and improving cleaning performance. Therefore, the technical solution of this application solves the problem of swinging interference between bristle clusters during use in conventional electric toothbrushes.

[0034] In view of this, the present invention provides an oral care element and an electric oral cleaning device to solve the problem that electric toothbrushes in the prior art are difficult to achieve both comfort and air-drying speed.

[0035] In a third aspect, the present invention provides an oral care element, comprising: a main body, the main body comprising a proximal end and a distal end extending along the axis of the main body, the distal end being used to couple with a drive assembly; a contact element carrier retained at the proximal end, the contact element carrier having a front surface, a first channel and a second channel respectively connected to the front surface, and a transverse axis passing through the center point of the front surface and perpendicular to the front surface; the first channel and the second channel are not connected to each other, and in the radial direction of the transverse axis passing through the first channel and the second channel at the same time, the inner edge of the first channel is located outside the outer edge of the outer edge of the second channel; a first contact element cluster passes through the first channel and extends from the front surface, the first contact element cluster extends along the extension direction of the transverse axis, and the end forms an almost continuous first cleaning area surface; the first contact element cluster The contact element cluster is formed by multiple first contact elements, the second contact element cluster passes through the second channel and extends from the front surface, the second contact element cluster extends along the extension direction of the transverse axis, and the end forms an almost continuous second cleaning area surface; the second contact element cluster is formed by multiple second contact elements, the ratio of the sum of the cross-sections of the multiple first contact elements at the front surface perpendicular to the transverse axis to the area enclosed by the edge of the first channel is between 0.55 and 0.85, and / or the ratio of the sum of the cross-sections of the multiple second contact elements at the front surface perpendicular to the transverse axis to the area enclosed by the edge of the second channel is between 0.55 and 0.85.

[0036] Optionally, a ratio of the sum of cross sections of the plurality of first contact elements at the front surface perpendicular to the transverse axis to an area enclosed by the edge of the first channel is 0.7.

[0037] Optionally, a ratio of the sum of cross sections of the plurality of second contact elements at the front surface perpendicular to the transverse axis to an area enclosed by the edge of the second channel is 0.7.

[0038] Optionally, in the first channel and within a circle with a radius of 1 mm, the number of first contact elements ranges from 210 to 590.

[0039] Optionally, in the second channel and within a circle with a radius of 1 mm, the number of the second contact elements ranges from 90 to 329.

[0040] Optionally, in the first channel and within a circle with a radius of 1 mm, the number of first contact elements ranges from 440 to 590.

[0041] Optionally, in the first channel and within a circle with a radius of 1 mm, the number of the first contact elements ranges from 210 to 330.

[0042] Optionally, in the second channel and within a circle with a radius of 1 mm, the number of the second contact elements ranges from 90 to 220.

[0043] Optionally, the cross-section of the first contact element perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter in the range of 3 mil to 4 mil; and / or, the cross-section of the second contact element perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter in the range of 4 mil to 6 mil; the contact element carrier exists in the cross-section of the first channel and the second channel, and the difference between the maximum length of the first contact element extending from the front surface and the shortest length of the second contact element extending from the front surface does not exceed 3 mm, or, the difference between the maximum length of the second contact element extending from the front surface in the cross-section and the shortest length of the first contact element extending from the front surface does not exceed 3 mm.

[0044] Optionally, the contact element carrier comprises a plurality of disconnected first channels.

[0045] Optionally, the contact element carrier comprises a plurality of disconnected second channels.

[0046] Optionally, the cross-section of the first contact elements passing through some of the multiple first channels perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter of 3 mil, and the cross-section of the first contact elements passing through another part of the multiple first channels perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter of 4 mil.

[0047] Optionally, a cross section of the second contact element perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter of 5 mil.

[0048] Optionally, when the distal end is coupled to the driving assembly and driven by the driving assembly, the first contact element and the second contact element are driven to swing back and forth, and the setting of the first contact element cluster and the second contact element cluster satisfies the coefficient k, k = |A1-A2|÷L1, 1.6≦k≦2.4; wherein A1 is the swing amplitude of the first contact element, A2 is the swing amplitude of the second contact element, and L1 is the distance between the adjacent edges of the first channel and the second channel.

[0049] Optionally, a first projection length of a portion of the first contact element cluster extending out of the front surface on the transverse axis is in the range of 5mm to 12mm, and / or a second projection length of a portion of the second contact element cluster extending out of the front surface on the transverse axis is in the range of 5mm to 12mm.

[0050] Optionally, a first projection length of a portion of the first contact element cluster extending out of the front surface on the transverse axis is in a range of 6 mm to 11 mm.

[0051] Optionally, a second projection length of a portion of the second contact element cluster extending out of the front surface on the transverse axis is in a range of 8 mm to 13 mm.

[0052] Optionally, a first projection length of a portion of the first contact element cluster extending out of the front surface on the transverse axis is in a range of 8 mm to 10 mm.

[0053] Optionally, a second projection length of a portion of the second contact element cluster extending out of the front surface on the transverse axis is in a range of 8 mm to 10 mm.

[0054] Optionally, another first channel and / or second channel exists in an area with a width of 0.4 mm to 1.0 mm extending outward from the edge of the first channel as a baseline; and / or another second channel and / or first channel exists in an area with a width of 0.4 mm to 1.0 mm extending outward from the edge of the second channel as a baseline.

[0055] Optionally, another first channel and / or second channel exists in an area with a width of 0.6 mm to 0.8 mm extending outward from the edge of the first channel as a baseline; and / or another second channel and / or first channel exists in an area with a width of 0.6 mm to 0.8 mm extending outward from the edge of the second channel as a baseline.

[0056] Optionally, another first channel and / or second channel exists in an area extending outward by 0.7 mm in width with the edge of the first channel as the baseline; and / or another second channel and / or first channel exists in an area extending outward by 0.7 mm in width with the edge of the second channel as the baseline.

[0057] Optionally, the contact element carrier exists in the cross section of the adjacent first channel and the second channel, and the difference between the maximum length of the first contact element extending from the front surface and the shortest length of the second contact element extending from the front surface does not exceed 3 mm, or the difference between the maximum length of the second contact element extending from the front surface and the shortest length of the first contact element extending from the front surface in the cross section does not exceed 3 mm.

[0058] Optionally, the stiffness of the first contact element is less than or equal to that of the second contact element.

[0059] Optionally, in a cross section of the first contact element along its extension direction, the end extending from the front surface is tapered, and in a cross section of the second contact element along its extension direction, the end extending from the front surface is arc-shaped or nearly arc-shaped.

[0060] Optionally, a ratio of an area enclosed by the edge of the first channel to a sum of an area enclosed by the edge of the first channel and an area enclosed by the edge of the second channel is greater than or equal to 0.6.

[0061] Optionally, the ratio of the area enclosed by the edge of the second channel to the sum of the area enclosed by the edge of the first channel and the area enclosed by the edge of the second channel is greater than or equal to 0.1.

[0062] Optionally, the ratio of the area enclosed by the edge of the second channel to the sum of the area enclosed by the edge of the first channel and the area enclosed by the edge of the second channel is greater than or equal to 0.15.

[0063] Optionally, the maximum cross-sectional shape of the first contact element is a triangle, a rhombus, or a polygon with no less than four sides, and / or the maximum cross-sectional shape of the second contact element is a triangle, a rhombus, or a polygon with no less than four sides.

[0064] In a fourth aspect, the present invention provides an electric oral cleaning device, comprising the above-mentioned oral care element and a gripping portion, the gripping portion comprising a shell for gripping, a driving assembly, an energy element, and a triggering element arranged inside the shell; the driving assembly is coupled to the oral care element, and if the triggering element is triggered, the energy element provides energy to the driving assembly, so that the driving assembly drives the oral care element to vibrate back and forth.

[0065] Beneficial effects:

[0066] By utilizing the technical solution of the present invention, by reasonably allocating the number of first contact elements in the first channel and the number of second contact elements in the second channel, the first contact element cluster and the second contact element cluster have a reasonable hair planting rate. Specifically, the hair planting rate of the first contact element cluster is between 65% and 85%, and the hair planting rate of the second contact element cluster is between 65% and 85%, so that the oral care elements have a faster air-drying speed and good softness, thereby improving the comfort of use. Therefore, the technical solution of the present invention solves the problem that electric toothbrushes in the prior art are difficult to strike a balance between comfort and air-drying speed.

[0067] In view of this, the present invention provides an oral care element and an electric oral care appliance to solve the problem that the electric toothbrush in the prior art cannot take into account both cleaning performance and comfort.

[0068] In a fifth aspect, the present invention provides an oral care element, comprising: a main body, the main body comprising a proximal end and a distal end extending along the axis of the main body, the distal end being used to couple with a drive assembly; a contact element carrier retained at the proximal end, the contact element carrier having a front surface, a first channel and a second channel respectively connected to the front surface, and a transverse axis passing through the center point of the front surface and perpendicular to the front surface; the first channel and the second channel are not connected to each other; a first contact element cluster passes through the first channel and extends from the front surface, the first contact element cluster extends along the extension direction of the transverse axis, and the end forms an almost continuous first cleaning area surface; the first contact element cluster is formed by a plurality of first contact elements; the second contact element cluster passes through the second channel and extends from the front surface, the second contact element cluster extends along the extension direction of the transverse axis, and the end forms an almost continuous second cleaning area surface; the second contact element cluster is formed by a plurality of second contact elements; the ratio of the area enclosed by the edge of the first channel to the sum of the area enclosed by the edge of the first channel and the area enclosed by the edge of the second channel is greater than or equal to 0.6, and / or the ratio of the area enclosed by the edge of the second channel to the sum of the area enclosed by the edge of the first channel and the area enclosed by the edge of the second channel is greater than or equal to 0.1.

[0069] Optionally, a ratio of an area enclosed by the edge of the first channel to a sum of an area enclosed by the edge of the first channel and an area enclosed by the edge of the second channel is greater than or equal to 0.8.

[0070] Optionally, the ratio of the area enclosed by the edge of the second channel to the sum of the area enclosed by the edge of the first channel and the area enclosed by the edge of the second channel is greater than or equal to 0.15.

[0071] Optionally, a ratio of an area enclosed by the edge of the first channel to a front surface area of ​​the contact element carrier is in a range of 0.2 to 0.6.

[0072] Optionally, a ratio of an area enclosed by the edge of the first channel to a front surface area of ​​the contact element carrier is in a range of 0.3 to 0.5.

[0073] Optionally, a ratio of an area enclosed by the edge of the first channel to a front surface area of ​​the contact element carrier is in the range of 0.4.

[0074] Optionally, a ratio of an area enclosed by the edge of the second channel to a front surface area of ​​the contact element carrier is in a range of 0.03 to 0.15.

[0075] Optionally, a ratio of an area enclosed by the edge of the second channel to a front surface area of ​​the contact element carrier is in a range of 0.05 to 0.10.

[0076] Optionally, a ratio of an area enclosed by the edge of the second channel to a front surface area of ​​the contact element carrier is in the range of 0.07.

[0077] Optionally, the cross-section of the first contact element perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter in the range of 3 mil to 4 mil, and / or the cross-section of the second contact element perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter in the range of 4 mil to 6 mil, the contact element carrier exists in the cross-section of the first channel and the second channel, the difference between the maximum length of the first contact element extending from the front surface and the shortest length of the second contact element extending from the front surface does not exceed 3 mm, or, the difference between the maximum length of the second contact element extending from the front surface in the cross-section and the shortest length of the first contact element extending from the front surface does not exceed 3 mm.

[0078] Optionally, the contact element carrier comprises a plurality of disconnected first channels.

[0079] Optionally, the contact element carrier comprises a plurality of disconnected second channels.

[0080] Optionally, the cross-section of the first contact elements passing through some of the multiple first channels perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter of 3 mil, and the cross-section of the first contact elements passing through another part of the multiple first channels perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter of 4 mil.

[0081] Optionally, a cross section of the second contact element perpendicular to the transverse axis has a maximum diameter or a maximum circumscribed circle diameter of 5 mil.

[0082] Optionally, the area enclosed by the edges of each first channel is not less than 3 mm2.

[0083] Optionally, the area enclosed by the edges of each first channel is not less than 10 mm2.

[0084] Optionally, the area enclosed by the edges of each first channel is not less than 15 mm2.

[0085] Optionally, the area enclosed by the edges of each second channel is not less than 1 mm2.

[0086] Optionally, the area enclosed by the edges of each second channel is not less than 1.5 mm2.

[0087] Optionally, the area enclosed by the edges of each second channel is not less than 3 mm2.

[0088] Optionally, when the distal end is coupled to the driving assembly and driven by the driving assembly, the first contact element and the second contact element are driven to swing back and forth, and the setting of the first contact element cluster and the second contact element cluster satisfies the coefficient k, k = |A1-A2|÷L1, 1.6≦k≦2.4; wherein A1 is the swing amplitude of the first contact element, A2 is the swing amplitude of the second contact element, and L1 is the distance between the adjacent edges of the first channel and the second channel.

[0089] Optionally, a first projection length of a portion of the first contact element cluster extending out of the front surface on the transverse axis is in the range of 5mm to 12mm, and / or a second projection length of a portion of the second contact element cluster extending out of the front surface on the transverse axis is in the range of 5mm to 12mm.

[0090] Optionally, a first projection length of a portion of the first contact element cluster extending out of the front surface on the transverse axis is in a range of 6 mm to 11 mm.

[0091] Optionally, a second projection length of a portion of the second contact element cluster extending out of the front surface on the transverse axis is in a range of 8 mm to 13 mm.

[0092] Optionally, a first projection length of a portion of the first contact element cluster extending out of the front surface on the transverse axis is in a range of 8 mm to 10 mm.

[0093] Optionally, a second projection length of a portion of the second contact element cluster extending out of the front surface on the transverse axis is in a range of 8 mm to 10 mm.

[0094] Optionally, another first channel and / or second channel exists in an area with a width of 0.4 mm to 1.0 mm extending outward from the edge of the first channel as a baseline; and / or another second channel and / or first channel exists in an area with a width of 0.4 mm to 1.0 mm extending outward from the edge of the second channel as a baseline.

[0095] Optionally, another first channel and / or second channel exists in an area with a width of 0.6 mm to 0.8 mm extending outward from the edge of the first channel as a baseline; and / or another second channel and / or first channel exists in an area with a width of 0.6 mm to 0.8 mm extending outward from the edge of the second channel as a baseline.

[0096] Optionally, another first channel and / or second channel exists in an area extending outward by 0.7 mm in width with the edge of the first channel as the baseline; and / or another second channel and / or first channel exists in an area extending outward by 0.7 mm in width with the edge of the second channel as the baseline.

[0097] Optionally, the contact element carrier exists in the cross section of the adjacent first channel and the second channel, and the difference between the maximum length of the first contact element extending from the front surface and the shortest length of the second contact element extending from the front surface does not exceed 3 mm, or the difference between the maximum length of the second contact element extending from the front surface and the shortest length of the first contact element extending from the front surface in the cross section does not exceed 3 mm.

[0098] Optionally, the stiffness of the first contact element is less than or equal to that of the second contact element.

[0099] Optionally, in a cross section of the first contact element along its extension direction, the end extending from the front surface is tapered, and in a cross section of the second contact element along its extension direction, the end extending from the front surface is arc-shaped or nearly arc-shaped.

[0100] Optionally, a ratio of the sum of cross sections of the plurality of first contact elements at the front surface perpendicular to the transverse axis to an area enclosed by the edge of the first channel is between 0.65 and 0.85.

[0101] Optionally, a ratio of the sum of cross sections of the plurality of second contact elements at the front surface perpendicular to the transverse axis to an area enclosed by the edge of the second channel is between 0.65 and 0.85.

[0102] Optionally, the maximum cross-sectional shape of the first contact element is a triangle, a rhombus, or a polygon with no less than four sides, and / or the maximum cross-sectional shape of the second contact element is a triangle, a rhombus, or a polygon with no less than four sides.

[0103] Optionally, in a radial direction passing through the transverse axis of both the first channel and the second channel, the inner edge of the first channel is located outside the outer edge of the second channel.

[0104] In the sixth aspect, the present invention also provides an electric oral cleaning device, comprising the above-mentioned oral care element and a gripping portion, the gripping portion comprising a shell for gripping, a driving assembly, an energy element, and a triggering element arranged inside the shell; the driving assembly is coupled to the oral care element, and if the triggering element is triggered, the energy element provides energy to the driving assembly, so that the driving assembly drives the oral care element to vibrate back and forth.

[0105] Beneficial effects:

[0106] The structure of the present invention, by providing first and second channels, and implanting first and second contact element clusters of different sizes within the first and second channels, and by optimizing the area ratio of the first and second channels, ensures that the oral care elements offer both excellent comfort and sufficient cleaning power. Thus, the technical solution of the present invention solves the problem of existing electric toothbrushes failing to balance cleaning performance and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0108] FIG1 shows a schematic front view of an oral care element according to an embodiment of the present application;

[0109] FIG2 shows an enlarged schematic diagram of point A in FIG1 ;

[0110] FIG3 shows a schematic side view of the oral care element of FIG1 ;

[0111] FIG4 shows an enlarged schematic diagram of point B in FIG3 ;

[0112] FIG5 is a schematic structural diagram showing the front surface of the contact element carrier of the oral care element in FIG1 ;

[0113] FIG6 shows a schematic structural diagram of the first contact element cluster, the second contact element cluster, and the third contact element cluster of the oral care element in FIG1 ;

[0114] FIG7 shows a schematic diagram of the end shapes of the first contact element, the second contact element and the third contact element of the oral care element in FIG1 ;

[0115] FIG8 shows a schematic diagram of the oral care element in FIG1 simulating teeth cleaning;

[0116] FIG9 is a schematic diagram showing a vibration amplitude experiment of the oral care element in FIG1 ;

[0117] FIG10 shows the experimental results of the swing amplitude of the first contact element and the third contact element of the oral care element in FIG1 at different diameters and lengths;

[0118] FIG11 shows the experimental results of the swing amplitude of the second contact element of the oral care element in FIG1 at different diameters and lengths;

[0119] FIG12 shows a schematic diagram of a single first contact element, a second contact element, and a third contact element of the oral care element in FIG1 passing over the gums;

[0120] FIG13 is a schematic diagram showing a plurality of first contact elements, second contact elements and third contact elements of the oral care element in FIG1 passing over the gums;

[0121] FIG14 shows a schematic diagram of the structures of ten samples of the oral care element in FIG1 used in an experiment on the relationship between cleaning power, softness, and the proportion of each channel;

[0122] FIG15 shows the experimental results of the relationship between the second channel ratio and the cleaning force of the oral care element in FIG1 ;

[0123] FIG16 shows the experimental results of the relationship between the second channel ratio and softness of the oral care element in FIG1 ;

[0124] FIG17 shows a schematic diagram of the wear of Samples 2, 5, and 8 in FIG14 after cleaning;

[0125] FIG18 shows a schematic diagram of calculating the overall surface area per unit area of ​​the first contact element, the second contact element, and the third contact element;

[0126] FIG19 shows the experimental results of the relationship between the hair implantation rate and the water absorption rate of the oral care element in FIG1;

[0127] FIG20 shows the experimental results of the drying rates of the ten samples in FIG14 ;

[0128] FIG21 shows a schematic diagram of an oral cleaning device according to an embodiment of the present application.

[0129] Explanation of the accompanying drawings: 1. First zone; 2. Second zone; 3. Third zone; 4. Fourth zone; 5. Fifth zone; 10. Main body; 11. Proximal end; 12. Distal end; 20. Contact element carrier; 21. Front surface; 22. First channel; 23. Second channel; 24. Transverse axis; 25. Third channel; 30. First contact element cluster; 31. First cleaning zone surface; 32. First contact element; 40. Second contact element cluster; 41. Second cleaning zone surface; 42. Second contact element; 50. Third contact element cluster; 51. Third cleaning zone surface; 52. Third contact element; 100. Electric oral cleaning appliance; 110. Oral care element; 120. Grip; 121. Drive assembly; 122. Energy element; 123. Trigger element. DETAILED DESCRIPTION

[0130] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0131] As shown in FIG. 1 to FIG. 8 , an oral care element 110 according to the present application includes a main body 10 , a contact element carrier 20 , a first contact element cluster 30 and a second contact element cluster 40 .

[0132] The main body 10 includes a proximal end 11 and a distal end 12 extending along the main body axis. The distal end 12 is used to couple with the driving assembly 121 .

[0133] The contact element carrier 20 is retained at the proximal end 11 of the main body 10. The contact element carrier 20 has a front surface 21, a first channel 22 and a second channel 23 respectively connected to the front surface 21, and a transverse axis 24 passing through the center point of the front surface 21 and perpendicular to the front surface 21. The first channel 22 and the second channel 23 are not connected to each other. In the radial direction of the transverse axis 24 passing through both the first channel 22 and the second channel 23, the inner edge of the first channel 22 is located outside the outer edge of the outer side 24 of the second channel.

[0134] A first contact element cluster 30 passes through the first channel 22 and extends from the front surface 21. The first contact element cluster 30 extends along the extension direction of the transverse axis 24 and forms a nearly continuous first cleaning area surface 31 at its distal end. The first contact element cluster 30 is formed by a plurality of first contact elements 32, each of which has a maximum diameter or maximum circumscribed circle diameter in a cross section perpendicular to the transverse axis 24 ranging from 3 mils to 4 mils.

[0135] A second contact element cluster 40 passes through the second channel 23 and extends from the front surface 21. The second contact element cluster 40 extends along the extension direction of the transverse axis 24, and the end thereof forms a nearly continuous second cleaning area surface 41. The second contact element cluster 40 is formed by a plurality of second contact elements 42, and the cross section of the second contact element 42 perpendicular to the transverse axis 24 has a maximum diameter or a maximum circumscribed circle diameter ranging from 4 mil to 6 mil.

[0136] In the cross section of the contact element carrier 20 , the difference between the maximum length of the first contact element 32 extending from the front surface 21 and the shortest length of the second contact element 42 extending from the front surface 21 does not exceed 3 mm, or the difference between the maximum length of the second contact element 42 extending from the front surface 21 and the shortest length of the first contact element 32 extending from the front surface 21 in the cross section does not exceed 3 mm.

[0137] Utilizing the technical solution of this embodiment, along the swing direction of the oral care element 110, the first contact element cluster 30 and the second contact element cluster 40 of the oral care element 110 have a length difference, and the absolute value of the difference between the longest length of one and the shortest length of the other does not exceed 3 mm. This arrangement prevents interference between the first contact element cluster 30 and the second contact element cluster 40 during swinging, thereby not affecting the vibration transmission efficiency of the drive assembly 121 coupled to the main body 10, and improving cleaning performance. Furthermore, the maximum diameter or circumscribed circle diameter of the first contact element 32 is smaller than the maximum diameter or circumscribed circle diameter of the second contact element 42. This arrangement makes the first contact element 32 relatively soft, providing a gum-protecting effect and improving the comfort of the oral care element 110, while making the second contact element 42 relatively hard, improving the cleaning performance of the oral care element 110. In other words, the oral care element 110 achieves both comfort and cleaning performance. Therefore, the technical solution of this embodiment solves the problems of low vibration transmission efficiency and the difficulty of achieving a balanced cleaning performance and comfort in conventional electric toothbrushes.

[0138] As shown in Figure 1 , the main body 10 is generally rod-shaped and can be either hollow or solid. In the orientation shown in Figure 1 , the proximal end 11 of the main body 10 is the upper end, and the distal end 12 of the main body 10 is the lower end. The proximal end 11 and distal end 12 of the main body 10 can be understood as the end closest to the oral cavity and the end facing away from the oral cavity during use.

[0139] Furthermore, the distal end 12 of the main body 10 is used to couple with the driving mechanism, and the proximal end 11 of the main body 10 is used to mount the contact element carrier 20. Therefore, when the driving mechanism is started and vibrates, the main body 10 can transmit the vibration of its distal end 12 to the proximal end.

[0140] In addition, the outer diameter of the distal end 12 of the main body 10 is larger than the outer diameter of the proximal end 11 , which on the one hand strengthens the structural strength of the distal end 12 of the main body 10 and on the other hand strengthens the vibration transmission effect.

[0141] As shown in Figures 1 and 3, the contact element carrier 20 is disposed at the proximal end 11 of the main body 10 and has a generally flat, elliptical structure. The function of the contact element carrier 20 is to mount the first contact element cluster 30 and the second contact element cluster 40 described above. When the drive mechanism is activated to generate vibration, the main body 10 transmits the vibration of its distal end 12 to the proximal end 11, and the vibration of the proximal end 11 of the main body 10 is transmitted to the contact element carrier 20. The vibration of the contact element carrier 20 drives the first contact element cluster 30 and the second contact element cluster 40 to oscillate back and forth at high speed. When the user places the contact element carrier 20 in the oral cavity, the first contact element cluster 30 and the second contact element cluster 40 come into contact with the gums or teeth, thereby achieving a cleaning effect.

[0142] Those skilled in the art will appreciate that the main body 10 and the contact element carrier 20 together form a toothbrush head structure.

[0143] As can be seen in Figures 1 and 3 , the front surface 21 of the contact element carrier 20 is the surface facing the gums or teeth during cleaning. The transverse axis 24 is a virtual axis perpendicular to the front surface 21 and passing through the midpoint of the front surface 21. Furthermore, the "cross-section" in the aforementioned "cross-section of the contact element carrier 20 having the first channel 22 and the second channel 23" refers to a cross-section perpendicular to the front surface 21. As can be seen in Figure 5 , the front surface 21 of the contact element carrier 20 is provided with the first channel 22 and the second channel 23. The first channel 22 is used to mount the first contact element cluster 30, and the second channel 23 is used to mount the second contact element cluster 40.

[0144] In this embodiment, the first channel 22 and the second channel 23 are independent and not connected to each other. In any radial direction along the transverse axis 24, if the radial direction passes through the first channel 22 and the second channel 23 at the same time, then in the radial direction, the outer edge of the second channel 23 that passes through does not exceed the outer edge of the first channel 22. For example, at least the following two situations are included:

[0145] In the first case, as shown in FIG5 , the second channel 23 is entirely located inside the first channel 22 . At this time, the outer edge and the inner edge of the second channel 23 do not exceed the outer edge of the first channel 22 , nor do they exceed the inner edge of the first channel 22 .

[0146] Another situation is that the second channel 23 and the first channel 22 have an overlapping part in the radial direction along the transverse axis 24, but the outer edge of the second channel 23 does not exceed the outer edge of the first channel 22, that is, the outer edge of the first channel 22 is located outside the outer edge of the second channel 23.

[0147] The first contact element cluster 30 is a brush filament cluster, which is arranged in the first channel 22. And the first contact element cluster 30 extends from the front surface 21 of the contact element carrier 20 and extends axially along the transverse axis 24. The first contact element cluster 30 is composed of multiple first contact elements 32, that is, multiple brush filaments. Since the lengths of the multiple first contact elements 32 cannot be guaranteed to be absolutely consistent in the process or after a period of use, the ends of the first contact element cluster 30 (that is, the ends facing away from the front surface 21) form an almost continuous first cleaning area surface 31. The first cleaning area surface 31 is used to clean the gums or teeth. As an embodiment, the first cleaning area surface 31 is set to a rounded corner, so that the first cleaning area surface 31 is smoother and more comfortable when in contact with oral tissue such as gums, without stinging, and provides a gentler touch. As an embodiment, the first cleaning area surface 31 can be set to a wavy shape, an arc shape, etc., so as to fit better with the surface of the oral tissue.

[0148] In this embodiment, a cross section of the first contact element 32 perpendicular to the transverse axis 24 has a maximum diameter or a maximum circumscribed circle diameter ranging from 3 mil to 4 mil. Specifically:

[0149] When the cross section of the first contact element 32 is circular, the largest diameter among the various diameters of the first contact element 32 is selected to be 3 mil to 4 mil.

[0150] For example, the maximum diameter of the cross section of the first contact element 32 may be selected to be 3 mil, 3.2 mil, 3.4 mil, 3.6 mil, 3.8 mil, or 4 mil.

[0151] When the cross-section of the first contact element 32 is non-circular, for example, the cross-section of the first contact element 32 is a triangle, a rhombus, or a polygon with four or more sides, then the largest circumscribed circle diameter among the circumscribed circle diameters of the first contact element 32 is selected to be 3 mil to 4 mil.

[0152] For example, the maximum circumscribed circle diameter of the cross section of the first contact element 32 may be selected as 3 mil, 3.2 mil, 3.4 mil, 3.6 mil, 3.8 mil, or 4 mil.

[0153] Of course, the cross-sectional shape of the first contact element 32 may also be an irregular shape, such as a shape composed of curves, or a shape composed of a combination of straight lines and curves.

[0154] The second contact element cluster 40 is a brush filament cluster, which is arranged in the second channel 23. The second contact element cluster 40 extends from the front surface 21 of the contact element carrier 20 and extends axially along the transverse axis 24. The second contact element cluster 40 is composed of a plurality of second contact elements 42, that is, a plurality of brush filaments. Since the lengths of the plurality of second contact elements 42 cannot be guaranteed to be absolutely consistent in the process or after a period of use, the end of the second contact element cluster 40 (that is, the end facing away from the front surface 21) forms an almost continuous second cleaning area surface 41. The second cleaning area surface 42 is used to clean the gums or teeth. As an embodiment, the second cleaning area surface 41 can be set to a wavy shape, an arc shape, etc., so as to better fit the surface of the oral tissue.

[0155] In this embodiment, a cross section of the second contact element 42 perpendicular to the transverse axis 24 has a maximum diameter or a maximum circumscribed circle diameter ranging from 4 mil to 6 mil. Specifically:

[0156] When the cross section of the second contact element 42 is circular, the largest diameter among the diameters of the second contact element 42 is selected to be 4 mil to 6 mil.

[0157] For example, the maximum diameter of the cross section of the second contact element 42 may be selected to be 4 mil, 4.2 mil, 4.4 mil, 4.6 mil, 4.8 mil, 5 mil, 5.2 mil, 5.4 mil, 5.6 mil, 5.8 mil, or 6 mil.

[0158] When the cross-section of the second contact element 42 is non-circular, for example, the cross-section of the second contact element 42 is a triangle, a rhombus, or a polygon with four or more sides, then the largest circumscribed circle diameter among the circumscribed circle diameters of the second contact element 42 is selected to be 3 mil to 4 mil.

[0159] For example, the maximum circumscribed circle diameter of the cross section of the second contact element 42 may be selected as 4 mil, 4.2 mil, 4.4 mil, 4.6 mil, 4.8 mil, 5 mil, 5.2 mil, 5.4 mil, 5.6 mil, 5.8 mil, or 6 mil.

[0160] Further optionally, a cross section of the second contact element 42 perpendicular to the transverse axis 24 has a maximum diameter or a maximum circumscribed circle diameter of 5 mil.

[0161] Of course, the cross-sectional shape of the second contact element 42 may also be an irregular shape, such as a shape composed of curves, or a shape composed of a combination of straight lines and curves.

[0162] As shown in FIG7 , in the technical solution of this embodiment, in the cross-section of the first contact element 32 along its extension direction, the end extending out of the front surface is conical, and in the cross-section of the second contact element 42 along its extension direction, the end extending out of the front surface is arc-shaped or close to an arc-shaped.

[0163] Specifically, the first contact element 32 is a sharpened filament, while the second contact element 42 is a rounded filament. Furthermore, the first contact element cluster 30 is a sharpened filament cluster, while the second contact element cluster 40 is a rounded filament cluster. Furthermore, the maximum diameter or maximum circumscribed circle diameter of the first contact element 32 is slightly smaller than the maximum diameter or maximum circumscribed circle diameter of the second contact element 42. Therefore, when cleaning gums or teeth, the first contact element 32 is relatively soft and easily deformed, thereby improving comfort and protecting the gums. The second contact element 42 is relatively hard, thereby enhancing cleaning power and ensuring effective cleaning. Thus, the oral care element 110 of this embodiment balances comfort and effective cleaning.

[0164] In this embodiment, the length of the second contact element 42 protruding from the front surface 21 is greater than the length of the first contact element 32 protruding from the front surface 21. As can be seen from Figure 4, because the first cleaning area surface 31 of the first contact element cluster 30 and the second cleaning area surface 41 of the second contact element cluster 40 are not planar and are affected by processing and wear and tear, the lengths of the multiple first contact elements 32 within the first contact element cluster 30 are inconsistent, and the lengths of the multiple second contact elements 42 within the second contact element cluster 40 are also inconsistent. As an embodiment, the first cleaning area surface 31 and the second cleaning area surface 41 can be configured to form a connected wave shape, arc shape, etc., to better conform to the surface of oral tissue.

[0165] Furthermore, when the distal end 12 is coupled to the drive assembly 121 and driven by the drive assembly 121, it causes the first contact element 32 and the second contact element 42 on the contact element carrier 20 to oscillate back and forth. The cross section of the contact element carrier 20 is perpendicular to the axis of the main body 10. The first contact element 32 and / or the second contact element 42 in the same cross section can oscillate back and forth with the axis of the main body 10 as the centerline, forming an oscillating fan. This centerline can coincide with or be parallel to the axis of the main body 10. Since the first contact element 32 and the second contact element 42 have different maximum diameters of the cross section and different bending stiffness, there is a difference in the swing amplitude when driven. Therefore, in this embodiment, in the same cross section, the difference between the maximum length of the first contact element 32 extending from the front surface 21 and the shortest length of the second contact element 42 extending from the front surface 21 does not exceed 3 mm, or, in the same cross section, the difference between the maximum length of the second contact element 42 extending from the front surface 21 and the shortest length of the first contact element 32 extending from the front surface 21 does not exceed 3 mm. The existence of this height difference can effectively avoid the swing interference between the first contact element 32 and the second contact element 42 in the same swinging sector, so that the first cleaning area surface 31 and the second cleaning area surface 41 at the ends of the first contact element 32 and the second contact element 42 can fully contact and rub with the teeth, tooth gaps and / or gum tissue respectively, thereby improving the cleaning effect.

[0166] Furthermore, as can be seen from Figure 4, the first contact element cluster 30 and the second contact element cluster 40 have a height difference d at the end facing away from the front surface 21, so that the outer end of the second contact element cluster 40 protrudes beyond the outer end of the first contact element cluster 30, and the height difference d does not exceed 3mm in the same cross section. By setting this height difference, on the one hand, during the cleaning process, the force point can be effectively placed on the tooth surface through the second contact element cluster 40, preventing the core cleaning force point from being supported by the first contact element cluster 30, resulting in a weakened cleaning effect and damaged gums, thereby achieving both cleaning and gum protection. On the other hand, this height difference prevents the first contact element cluster 30 and the second contact element cluster 40 from interfering with each other during high-speed swinging, thereby better transmitting the vibration of the drive mechanism and improving the cleaning effect. The second cleaning area surface 41 serves as a supporting cleaning area to clean the tooth surface, and the first cleaning area surface 31 serves as a gum protection area to assist in cleaning the gums.

[0167] In this embodiment, there are multiple first channels 22, and the first contact elements 32 passing through some of the multiple first channels 22 have a maximum diameter or maximum circumscribed circle diameter of 3 mils in a cross-section perpendicular to the transverse axis 24, while the first contact elements 32 passing through another portion of the multiple first channels 22 have a maximum diameter or maximum circumscribed circle diameter of 4 mils in a cross-section perpendicular to the transverse axis 24. The first contact elements 32 having a maximum diameter or maximum circumscribed circle diameter of 4 mils can effectively protect the gums while providing a certain cleaning force, forming a transition area between the first cleaning surface 31 and the second cleaning surface 41, and providing a good oral feel. That is, the multiple first channels 22 are divided into two parts, wherein one portion of the first channels 22 is provided with sharpened brush filaments with a diameter of 3 mils, and the other portion of the first channels 22 is provided with sharpened brush filaments with a diameter of 4 mils. For the sake of convenience, the first channel 22 provided with 4mil sharpened brush wire will be referred to as the third channel 25, the first contact element cluster 30 within the first channel 22 provided with 4mil sharpened brush wire will be referred to as the third contact element cluster 50, and the first contact element 32 of the first contact element cluster 30 within the first channel 22 provided with 4mil sharpened brush wire will be referred to as the third contact element 52.

[0168] As shown in Figures 2, 5, and 6, in the technical solution of this embodiment, the contact element carrier 20 also includes a third channel 25 connected to the front surface 21. The third channel 25 is not connected to the first channel 22 or the second channel 23. Along any radial direction of the transverse axis 24, if the radial direction passes through both the second channel 23 and the third channel 25, the outer edge of the second channel 23 does not exceed the inner edge of the third channel 25. If the radial direction passes through both the first channel 22 and the third channel 25, the outer edge of the third channel 25 does not exceed the inner edge of the first channel 22, so that the third channel 25 is disposed between the first channel 22 and the second channel 23. A third contact element cluster 50 passes through the third channel 25, extends from the front surface 21, and extends along the extension direction of the transverse axis 24, forming a nearly continuous third clean area surface 51 at the end. The third contact element cluster 50 is formed by a plurality of third contact elements 52, each of which has a maximum diameter or maximum circumscribed circle diameter ranging from 3 mil to 4 mil in a cross section perpendicular to the transverse axis 24. In the cross section of the contact element carrier 20 between the third channel 25 and the second channel 23 , the difference between the maximum length of the third contact element 52 extending from the front surface 21 and the shortest length of the second contact element 42 extending from the front surface 21 does not exceed 3 mm, or the difference between the maximum length of the second contact element 42 extending from the front surface 21 and the shortest length of the third contact element 52 extending from the front surface 21 in the cross section does not exceed 3 mm. Thus, the height difference can effectively prevent the third contact element 52 from causing swinging interference with the second contact element 42.

[0169] As an embodiment, the third channel 25 is provided at both ends of the contact element carrier 20 along the extension direction of the main body axis and is located between the first channel 22 and the second channel 23 to perform gentle auxiliary cleaning, such as cleaning the grooves of teeth.

[0170] In this embodiment, the third channel 25 and the second channel 23 are independent and not connected to each other. In any radial direction along the transverse axis 24, if the radial direction passes through the second channel 23 and the third channel 25 at the same time, the outer edge of the second channel 23 in the radial direction does not exceed the outer edge of the third channel 25. For example, at least two of the following situations are included:

[0171] In the first case, as shown in FIG5 , the second channel 23 is entirely located inside the third channel 25 . At this time, the outer edge and the inner edge of the second channel 23 do not exceed the outer edge or the inner edge of the third channel 25 .

[0172] Another situation is that the second channel 23 and the third channel 25 have an overlapping part in the radial direction along the transverse axis 24, but the outer edge of the second channel 23 does not exceed the outer edge of the third channel 25, that is, the outer edge of the first channel 22 is located outside the outer edge of the second channel 23.

[0173] In this embodiment, the third channel 25 is independent of the first channel 22 and is not connected to each other. In any radial direction along the transverse axis 24, if the radial direction passes through both the first channel 22 and the third channel 25, then the outer edge of the third channel 25 does not exceed the outer edge of the first channel 22 in the radial direction. For example, there are at least two situations as follows:

[0174] In the first case, as shown in FIG5 , the third channel 25 is entirely located inside the first channel 22 . At this time, the outer edge and the inner edge of the third channel 25 do not exceed the outer edge of the first channel 22 , nor do they exceed the inner edge of the first channel 22 .

[0175] Another situation is that the third channel 25 and the first channel 22 have an overlapping part in the radial direction along the transverse axis 24, but the outer edge of the third channel 25 does not exceed the outer edge of the first channel 22, that is, the outer edge of the third channel 25 is located outside the outer edge of the first channel 22.

[0176] The third contact element cluster 50 is a brush filament cluster, which is arranged in the third channel 25. The third contact element cluster 50 extends from the front surface 21 of the contact element carrier 20 and extends axially along the transverse axis 24. The third contact element cluster 50 is composed of multiple third contact elements 52, that is, multiple brush filaments. Since the lengths of the multiple third contact elements 52 cannot be guaranteed to be absolutely consistent in the process or after a period of use, the end of the third contact element cluster 50 (that is, the end facing away from the front surface 21) forms an almost continuous third cleaning area surface 51. The third cleaning area surface 51 is used to clean the gums or teeth. The third cleaning area surface 51 can cooperate with the first cleaning area surface 31 and the second cleaning area 41 surface to form waves, arcs, etc., so as to better fit the surface of the oral tissue.

[0177] In this embodiment, a cross section of the third contact element 52 perpendicular to the transverse axis 24 has a maximum diameter or a maximum circumscribed circle diameter ranging from 3 mil to 4 mil. Specifically:

[0178] When the cross section of the third contact element 52 is circular, the largest diameter among the various diameters of the third contact element 52 is selected to be 3 mil to 4 mil.

[0179] For example, the maximum diameter of the cross section of the third contact element 52 may be selected to be 3 mil, 3.2 mil, 3.4 mil, 3.6 mil, 3.8 mil, or 4 mil.

[0180] When the cross-section of the third contact element 52 is non-circular, for example, the cross-section of the third contact element 52 is a triangle, a rhombus, or a polygon with four or more sides, then the largest circumscribed circle diameter among the circumscribed circle diameters of the third contact element 52 is selected to be 3 mil to 4 mil.

[0181] For example, the maximum circumscribed circle diameter of the cross section of the third contact element 52 may be selected as 3 mil, 3.2 mil, 3.4 mil, 3.6 mil, 3.8 mil, or 4 mil.

[0182] Further optionally, a cross section of the third contact element 52 perpendicular to the transverse axis 24 has a maximum diameter or a maximum circumscribed circle diameter of 4 mil.

[0183] Of course, the cross-sectional shape of the third contact element 52 may also be an irregular shape, such as a shape composed of curves, or a shape composed of a combination of straight lines and curves.

[0184] As shown in Figure 7, in the technical solution of this embodiment, the end of the third contact element 52 extending along its extension direction is tapered. This means that the third contact element 52, like the first contact element 32 described above, is composed of sharpened brush filaments, and the third contact element cluster 50 is a cluster of sharpened brush filaments. The third contact element 52 differs from the first contact element 32 in the maximum diameter or maximum circumscribed circle of its cross section. Specifically, the maximum diameter or maximum circumscribed circle of the cross section of the first contact element 32 can be 3 mils, while the maximum diameter or maximum circumscribed circle of the cross section of the third contact element 52 can be 4 mils, achieving both a clean and gentle touch.

[0185] In addition, the length of the third contact element 52 protruding from the front surface 21 may be the same as or different from the length of the first contact element 32 protruding from the front surface 21 .

[0186] When the distal end 12 is coupled to the drive assembly 121 and driven by the drive assembly 121, it causes the first contact element 32 and the second contact element 42 on the contact element carrier 20 to oscillate back and forth. The cross section of the contact element carrier 20 is perpendicular to the main body axis. The first contact element 32, the second contact element 42, and / or the third contact element 52 in the same cross section can oscillate back and forth with the axis of the main body 10 as the centerline, forming an oscillating fan. This centerline can coincide with or be parallel to the axis of the main body 10. The first contact element 32, the second contact element 42 and the third contact element 52 have different maximum cross-sectional diameters and different bending stiffnesses, and therefore have different swing amplitudes when driven. Therefore, in this embodiment, in the same cross-section, the difference between the maximum length of the third contact element 52 extending from the front surface 21 and the shortest length of the second contact element 42 extending from the front surface 21 does not exceed 3 mm, or, in the same cross-section, the difference between the maximum length of the second contact element 42 extending from the front surface 21 and the shortest length of the third contact element 52 extending from the front surface 21 does not exceed 3 mm. The existence of this height difference can effectively avoid the swing interference between the third contact element 52 and the second contact element 42 in the same swinging sector, so that the third cleaning area surface 51 and the second cleaning area surface 41 at the ends of the third contact element 52 and the second contact element 42 can fully contact and rub with the teeth, tooth gaps and / or gum tissue, respectively, to improve the cleaning effect.

[0187] By setting this height difference, on the one hand, during the cleaning process, the force point can effectively fall on the tooth surface through the second contact element cluster 40, preventing the force point from being supported by the third contact element cluster 50, resulting in a weakened cleaning effect and damage to the gums; on the other hand, the height difference prevents the third contact element cluster 50 and the second contact element cluster 40 from interfering with each other during high-speed swinging, thereby better transmitting the vibration of the driving mechanism.

[0188] As an embodiment, the stiffness of the first contact element 32 is less than or equal to that of the second contact element 42 , and the stiffness of the third contact element 52 is less than or equal to that of the second contact element 42 .

[0189] As shown in FIG. 5 , the contact element carrier 20 includes a plurality of disconnected first channels 22 , a plurality of disconnected second channels 23 , and a plurality of disconnected third channels 25 .

[0190] The specific structures of the first channel 22 , the second channel 23 and the third channel 25 are described in detail below.

[0191] As shown in Figure 5, the first channel 23 comprises two first regions 1 and two second regions 2, for a total of four regions. The two first regions 1 are positioned on either side of the front surface 21 along its length, while the two second regions 2 are positioned on either side of its width. The first regions 1 are generally arc-shaped, while the second regions 2 are generally linear. A gap exists between the first and second regions 1, 2, making them independent and disconnected. The two first regions 1 and the two second regions 2 form an outer ring structure.

[0192] As can be seen in Figure 5, the second channel 22 includes four third regions 3 and one fourth region 4, for a total of five regions. The third regions 3 are generally quadrilateral in structure, forming a matrix of two rows and two columns. Adjacent third regions 3 have gaps between them, meaning they are independent and disconnected from each other. The four third regions 3 are located between two first regions 1 and between two second regions 2, i.e., inboard of the first channel 22. The fourth region 4 is circular in structure, positioned midway between the four third regions 3 and at the center of the front surface 21. A gap exists between the fourth region 4 and the third region 3, meaning they are independent and disconnected from each other.

[0193] As can be seen in Figure 5 , the third channel 25 includes two fifth zones 5, for a total of two regions. The fifth zones 5 are generally arc-shaped. The two fifth zones 5 are located inward of the two first zones 1, respectively, and both fifth zones 5 are located outward of the third zone 3, meaning that the fifth zone 5 is located between the first zone 1 and the third zone 3. There is a gap between the fifth zone 5 and both the first zone 1 and the third zone 3, meaning that the fifth zone 5 is independent of and disconnected from the first zone 1 and the third zone 3.

[0194] Of course, in some embodiments not shown, the first channel 22 , the second channel 23 and the third channel 25 may be arranged in other shapes and are not limited to the above structure.

[0195] The following details the basis for determining the values ​​of various parameters in the oral care element 110 in this embodiment.

[0196] 1. Length and diameter of the first and second contact elements, the third contact element, and the spacing between channels

[0197] The length and diameter of the first, second, and third contact elements 32, 42, and 52 affect the swing amplitude of each contact element. Improper swing amplitudes can interfere with the swings of adjacent contact element carriers during the vibration of the oral care element 110, preventing effective vibration transmission and affecting cleaning effectiveness. Therefore, it is necessary to first measure the swing amplitude of each contact element at the same vibration frequency at different lengths and diameters.

[0198] As an embodiment, when the distal end 12 is coupled to the driving assembly 121 and driven by the driving assembly 121, the contact elements on the contact element carrier 20 are driven to swing back and forth. For example, the plane of the front surface 21 in a stationary state is used as the swing amplitude projection surface, and the contact elements swing back and forth between the left and right directions. The distance between the projections of the rightmost contact element in the cluster when the cluster swings to the right extreme position and the leftmost contact element in the cluster when the cluster swings to the left extreme position on the swing amplitude projection surface is used as the swing distance, and the width of the projection of the contact element cluster on the swing amplitude projection surface in the stationary state is used as the stationary distance. The absolute value of the difference between the swing distance and the stationary distance is the swing amplitude of the contact element cluster.

[0199] For example, if the first contact element cluster 30 swings back and forth between the left and right directions, the distance between the projections of the rightmost first contact element 32 of the first contact element cluster 30 when it swings to the right extreme position and the leftmost first contact element 32 when it swings to the left extreme position on the swing amplitude projection plane is the swing distance, and the width of the projection of the first contact element cluster 30 on the swing amplitude projection plane in the static state is the static distance. The absolute value of the difference between the swing distance and the static distance is the swing amplitude of the first contact element cluster 30. Similarly, the swing amplitudes of the second and third contact element clusters 40, 50 can be calculated.

[0200] To this end, the applicant conducted numerous experiments, such as shown in Figure 9, which shows the swing amplitude measurement of a sharpened filament with a length of 6 mm and a diameter of 3 mils. The right side view in Figure 9 shows the position of the oral care element 110 at rest, while the left side view and the center view in Figure 9 respectively show the positions of the sharpened filament cluster at the left and right extremes of the swing of the oral care element 110 in a vibrating state. The left and center views in Figure 9 were captured using a high-speed camera.

[0201] As can be seen from Figure 9, the calculation method for the swing amplitude of the sharpened brush cluster is to subtract the distance between the extreme positions of the swing of the sharpened brush cluster from the distance between the two sides of the sharpened brush cluster in the static state, measured according to the scale in Figure 9, that is:

[0202] Swing amplitude = (60.5-50.0)-(58.75-50.25) = 2.0mm;

[0203] It should be noted that the swing amplitude here refers to the swing amplitude of the sharpened brush filaments in the left and right directions, so the swing amplitude toward one side is 1.0 mm.

[0204] According to the measurement method shown in FIG9 , the amplitude of the sharpened brush wire and the rounded brush wire was measured at different lengths and diameters, and the measurement results of FIG10 and FIG11 were obtained (due to space limitations, each measurement diagram is not shown one by one).

[0205] The upper graph in Figure 10 shows the swing amplitude of a 3 mil diameter sharpened brush filament at diameters of 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, and 12 mm. The horizontal axis represents the brush filament length, and the vertical axis represents the swing amplitude.

[0206] The lower graph in Figure 10 shows the swing amplitude of a 4 mil diameter sharpened brush filament at diameters of 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, and 12 mm. The horizontal axis represents the brush filament length, and the vertical axis represents the swing amplitude.

[0207] The upper graph in Figure 11 shows the swing amplitude of a 4 mil diameter rounded brush filament at diameters of 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, and 12 mm. The horizontal axis represents the brush filament length, and the vertical axis represents the swing amplitude.

[0208] The graph in Figure 11 shows the swing amplitude of a 5 mil diameter rounded brush filament at diameters of 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, and 12 mm. The horizontal axis represents the brush filament length, and the vertical axis represents the swing amplitude.

[0209] The lower graph in Figure 11 shows the swing amplitude of a 6 mil diameter rounded brush filament at diameters of 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, and 12 mm. The horizontal axis represents the brush filament length, and the vertical axis represents the swing amplitude.

[0210] As can be seen from Figure 10, the sharpened brush wires with diameters of 3 mil and 4 mil oscillate relatively stably within the length range of 8 mm to 10 mm. When the length exceeds 10 mm, the sharpened brush wires begin to oscillate abnormally, including an abnormal decrease or increase in the amplitude of the sharpened brush wire.

[0211] Therefore, in this embodiment, the first contact element 32 of the first contact element cluster 30 can use a sharpened brush filament with a length of 5mm to 12mm. To ensure a larger swing amplitude of the sharpened brush filament, improve the cleaning range and effect, or coordinate the overall brush filament combination, a sharpened brush filament with a length of 6mm to 11mm can be used. To further improve the cleaning range or coordinate the overall brush filament combination, a sharpened brush filament with a length of 8mm to 10mm can be used. For example, a 3-mil sharpened brush filament with a length of 8mm to 9.5mm can be used.

[0212] Since the third contact element 52 of the third contact element cluster 50 is also a sharpened brush wire, its value can be determined with reference to the first contact element 32 .

[0213] Through extensive experiments, the applicant discovered that for rounded brush filaments, as the diameter increases, the length of the brush filament corresponding to the maximum swing amplitude of the brush filament gradually decreases. For example, in Figure 11, the 4mil rounded brush filament is 11mm, and the 5mil rounded brush filament is 10mm. In order to ensure that the rounded brush filament has a larger swing amplitude and a larger cleaning range, thereby improving the cleaning power, the diameter of the rounded brush filament in this embodiment can be selected to be 5mm to 12mm long. In order to improve the cleaning power or the overall coordination of the brush filament, the length of the rounded brush filament can be selected from 8mm to 12mm, and further from 8mm to 10mm. For example, the rounded brush filament can be selected as a 5mil rounded brush filament with a diameter of 9mm-10mm.

[0214] As an embodiment, for the second contact element 42 of the second contact element cluster 40, in order to ensure the coordination of the swing of the rounded brush filaments, rounded brush filaments with a length of less than 11 mm can be selected. At the same time, in order to ensure that the energy of the brush handle can be fully transmitted when the brush head swings, rounded brush filaments with a length of more than 7 mm can be selected.

[0215] Further optionally, due to the different properties of rounded brush wires and pointed brush wires, and in order to maintain overall coordination with the second contact element 42, the first contact element 32 and the third contact element 52 can be selected to be 7mm to 10mm in length, and the second contact element 42 can be selected to be 7mm to 10mm in length.

[0216] Based on the length ranges of the first contact element 32 , the second contact element 42 , and the third contact element 52 , the size ranges of the first contact element cluster 30 , the second contact element cluster 40 , and the third contact element cluster 50 are given below.

[0217] When only a sharpened brush wire with a diameter of 3 mil is provided in the first channel 22, that is, when the third channel 25 is not provided:

[0218] Optionally, a first projection length of a portion of the first contact element cluster 30 extending beyond the front surface 21 on the transverse axis 24 is in a range of 5 mm to 12 mm.

[0219] Optionally, a first projection length of a portion of the first contact element cluster 30 extending beyond the front surface 21 on the transverse axis 24 is in a range of 6 mm to 11 mm.

[0220] Optionally, a first projection length of a portion of the first contact element cluster 30 extending beyond the front surface 21 on the transverse axis 24 is in a range of 8 mm to 10 mm.

[0221] Optionally, a second projection length of the portion of the second contact element cluster 40 extending beyond the front surface 21 on the transverse axis 24 is in a range of 5 mm to 12 mm.

[0222] Optionally, a second projection length of the portion of the second contact element cluster 40 extending beyond the front surface 21 on the transverse axis 24 is in a range of 8 mm to 12 mm.

[0223] Optionally, a second projection length of the portion of the second contact element cluster 40 extending out of the front surface 21 on the transverse axis 24 is in a range of 8 mm to 10 mm.

[0224] When two types of sharpened brush wires with diameters of 3 mil and 4 mil are set in the first channel 22, that is, the third channel 25 needs to be set as part of the first channel 22:

[0225] Optionally, a third projection length of the portion of the third contact element cluster 50 extending out of the front surface 21 on the transverse axis 24 is in a range of 5 mm to 12 mm.

[0226] Optionally, a third projection length of the portion of the third contact element cluster 50 extending out of the front surface 21 on the transverse axis 24 is in a range of 6 mm to 11 mm.

[0227] Optionally, a first projection length of a portion of the third contact element cluster 50 extending out of the front surface 21 on the transverse axis 24 is in a range of 8 mm to 10 mm.

[0228] The spacing between the first channel 22, the second channel 23 and the third channel 25 should satisfy the following requirements: when the oral care element 110 vibrates, the swinging of the contact element clusters on the two channels does not interfere with each other (the two channels can be: the first channel 22 and the second channel 23, the first channel 22 and the third channel 25, the second channel 23 and the third channel 25, two first channels 22, two second channels 23 or two third channels 25), so as not to affect the transmission of vibration, and to ensure that the two contact element clusters are tightly fitted when swinging. Combined with the swing amplitude of the sharpened brush wires and the rounded brush wires of various specifications, the following method is given to calculate the distance between the channels:

[0229] When only a sharpened brush wire with a diameter of 3 mil is provided in the first channel 22, that is, when the third channel 25 is not provided:

[0230] When the distal end 12 is coupled to the driving assembly 121 and driven by the driving assembly 121 , the first contact element 32 and the second contact element 42 are driven to swing back and forth, and the arrangement of the first contact element cluster 30 and the second contact element cluster 40 satisfies the coefficient k.

[0231] Where, k = |A1-A2|÷L1, 1.6≦k≦2.4;

[0232] Furthermore, A1 is the swing amplitude of the first contact element 32 , A2 is the swing amplitude of the second contact element 42 , and L1 is the distance between the edges of the adjacent first channel 22 and the second channel 23 .

[0233] Among them, taking any channel as the benchmark and its edge as the baseline, if there is another channel within the range of P1 width extending outward, and P1 does not exceed the preset value, then the two channels are determined to be adjacent channels, and P1 is the distance between the edges of the adjacent channels.

[0234] For example, if there is a second channel 23 within a range of width P2 extending outward from the edge of the first channel 22 as a reference, and P2 does not exceed the preset value, then the two are determined as adjacent first channels 22 and second channels 23, and P2 is the distance between the edges of the adjacent first channels 22 and second channels 23.

[0235] In the above calculation formula, |A1-A2| calculates the swing amplitude difference between the first contact element 32 and the second contact element 42. After dividing this value by L1, the coefficient k is obtained. Those skilled in the art will understand that the larger the k value, the denser the first contact element cluster 30 and the second contact element cluster 40 are arranged, and the smaller the k value, the more dispersed the first contact element cluster 30 and the second contact element cluster 40 are arranged.

[0236] The applicant's experiments revealed that when k is 2.0, the two contact element clusters swing closely together without interference. If k is below 1.6, the two contact element clusters appear dispersed, which is not conducive to oral hygiene. If k is above 2.4, the two contact element clusters will interfere significantly when swinging, which is not conducive to vibration transmission.

[0237] Therefore, in this embodiment, the value of k is between 1.6 and 2.4, and the value can be selected as 2.

[0238] For example, if the first contact element 32 of the first contact element cluster 30 in the first channel 22 uses a sharpened brush wire with a length of 7 mm and a diameter of 3 mils, and the second contact element 42 of the second contact element cluster 40 in the second channel 32 uses a rounded brush wire with a length of 10 mm and a diameter of 5 mils, then according to the charts shown in Figures 10 and 11 , the swing amplitude of the first contact element cluster 30 is 2 mm, and the swing amplitude of the second contact element cluster 40 is 3 mm, and the k value can be 2, then according to the above formula, the spacing between the first channel 22 and the second channel 23 can be calculated to be 0.5 mm.

[0239] When two types of sharpened brush wires with diameters of 3 mil and 4 mil are set in the first channel 22, that is, the third channel 25 needs to be set as part of the first channel 22:

[0240] When the distal end 12 is coupled to the driving assembly 121 and driven by the driving assembly 121 , the third contact element 52 and the second contact element 42 are driven to swing back and forth, and the arrangement of the third contact element cluster 50 and the second contact element cluster 40 satisfies the coefficient k.

[0241] Where, k = |A3-A2|÷L2, 1.6≦k≦2.4;

[0242] Furthermore, A3 is the swing amplitude of the third contact element 52 , A2 is the swing amplitude of the second contact element 42 , and L2 is the distance between the edges of the adjacent third channel 25 and the second channel 23 .

[0243] In the above calculation formula, |A3-A2| calculates the swing amplitude difference between the third contact element 52 and the second contact element 42. After dividing this value by L2, the coefficient k is obtained. Those skilled in the art will understand that the larger the k value, the denser the third contact element cluster 50 and the second contact element cluster 40 are arranged, and the smaller the k value, the more dispersed the third contact element cluster 50 and the second contact element cluster 40 are arranged.

[0244] The applicant's experiments revealed that when k is 2.0, the two contact element clusters swing closely together without interference. If k is below 1.6, the two contact element clusters appear dispersed, which is not conducive to oral hygiene. If k is above 2.4, the two contact element clusters will interfere significantly when swinging, which is not conducive to vibration transmission.

[0245] Therefore, in this embodiment, the value of k is between 1.6 and 2.4, and the value can be selected as 2.

[0246] Of course, the above formula can also be used to calculate the distance between two adjacent first channels 22, two adjacent second channels 23, or two adjacent third channels 25. Taking two adjacent first channels 22 as an example, when the specifications (diameter and length) of the first contact elements 32 of the two first contact element clusters 30 within the two adjacent first channels 22 are different, the distance between the two adjacent first channels 22 can be calculated by substituting the swing amplitude data of the two first contact elements 32 into the above formula and selecting an appropriate value for k.

[0247] In addition to calculating the spacing between adjacent channels using the formula described above, this embodiment also provides optional values ​​for the spacing between adjacent channels. Specifically, if the spacing between two adjacent channels is too large, fewer brush filaments can be implanted, and the filaments are too sparse, resulting in a swing blind spot and poor cleaning effect. If the spacing between two adjacent channels is too small, the structural strength of the implanted bristles, i.e., the contact element carrier, is insufficient, and the bristle bundle density is too high, which is not conducive to air drying and may breed bacteria. Therefore, it can be seen that the spacing between adjacent channels should be neither too large nor too small.

[0248] When only a sharpened brush wire with a diameter of 3 mil is provided in the first channel 22, that is, when the third channel 25 is not provided:

[0249] Another first channel 22 and / or second channel 23 exists within a region extending outward by 0.4 mm to 1.0 mm from the edge of the first channel 22. That is, the spacing between adjacent first channels 22 and second channels 23 is within a range of 0.4 mm to 1.0 mm, and the spacing between two adjacent first channels 22 is within a range of 0.4 mm to 1.0 mm.

[0250] Optionally, another first channel 22 and / or second channel 23 exists within a region extending outward by 0.6 mm to 0.8 mm from the edge of the first channel 22. That is, the spacing between adjacent first channels 22 and second channels 23 is within a range of 0.6 mm to 0.8 mm, and the spacing between two adjacent first channels 22 is within a range of 0.6 mm to 0.8 mm.

[0251] Optionally, another first channel 22 and / or second channel 23 exists within a region extending outward by 0.7 mm from the edge of the first channel 22. That is, the spacing between adjacent first channels 22 and second channels 23 is selected to be 0.7 mm, and the spacing between two adjacent first channels 22 is selected to be 0.7 mm.

[0252] Taking the edge of the second channel 23 as a baseline, another second channel 23 exists in a region extending outward by 0.4 mm to 1.0 mm in width. That is, the spacing between two adjacent second channels 22 is in the range of 0.4 mm to 1.0 mm.

[0253] Optionally, another second channel 23 exists in a region extending outward by 0.6 mm to 0.8 mm from the edge of the second channel 23. That is, the spacing between two adjacent second channels 22 is in the range of 0.6 mm to 0.8 mm.

[0254] Optionally, with the edge of the second channel 23 as the baseline, another second channel 23 exists in a region extending outward by 0.7 mm. That is, the spacing between two adjacent second channels 23 is selected to be 0.7.

[0255] When two types of sharpened brush wires with diameters of 3 mil and 4 mil are set in the first channel 22, that is, the third channel 25 needs to be set as part of the first channel 22:

[0256] The first channel 22 and / or the second channel 23 are located within an area extending outward by 0.4 mm to 1.0 mm from the edge of the third channel 25. That is, the spacing between adjacent third channels 25 and first channels 22 is within a range of 0.4 mm to 1.0 mm, and the spacing between adjacent third channels 25 and second channels 23 is within a range of 0.4 mm to 1.0 mm.

[0257] Optionally, the first channel 22 and / or the second channel 23 are located within a region extending outward by 0.6 mm to 0.8 mm from the edge of the third channel 25. That is, the spacing between adjacent third channels 25 and first channels 22 is within a range of 0.6 mm to 0.8 mm, and the spacing between adjacent third channels 25 and second channels 23 is within a range of 0.6 mm to 0.8 mm.

[0258] Optionally, the first channel and / or the second channel are located within a region extending outward by 0.7 mm from the edge of the third channel 25. That is, the spacing between adjacent third channels 25 and first channels 22 is selected to be 0.7 mm, and the spacing between adjacent third channels 25 and second channels 23 is selected to be 0.7 mm.

[0259] In one embodiment, in the cross-section of adjacent first channels 22 and second channels 23 of the contact element carrier 20, the difference between the maximum length of the first contact element 42 extending from the front surface 21 and the shortest length of the second contact element 42 extending from the front surface 21 does not exceed 3 mm. Alternatively, the difference between the maximum length of the second contact element 42 extending from the front surface 21 and the shortest length of the first contact element 32 extending from the front surface 21 in the cross-section does not exceed 3 mm. Thus, this height difference effectively prevents swing interference between contact elements in adjacent first channels 22 and second channels 23 in the same swinging sector, allowing the adjacent first cleaning area surfaces 31 and second cleaning area surfaces 41 to fully contact and rub against teeth, tooth gaps, and / or gum tissue, respectively, thereby improving the cleaning effect.

[0260] In one embodiment, in a cross section of adjacent third channels 25 and second channels 23 of the contact element carrier 20, the difference between the maximum length of the third contact element 52 extending from the front surface 21 and the shortest length of the second contact element 42 extending from the front surface 21 does not exceed 3 mm. Alternatively, the difference between the maximum length of the second contact element 42 extending from the front surface 21 and the shortest length of the first contact element 32 extending from the front surface 21 in the cross section does not exceed 3 mm. Thus, this height difference effectively prevents swing interference between contact elements in adjacent third channels 25 and second channels 23 within the same swinging sector, allowing the adjacent third cleaning area surfaces 51 and second cleaning area surfaces 41 to fully contact and rub against teeth, tooth gaps, and / or gum tissue, respectively, thereby improving the cleaning effect.

[0261] 2. Area ratio of the first channel, the second channel and the third channel

[0262] In this embodiment, the first channel 22 and the third channel 25 are implanted with sharpened bristles, and the second channel 23 is implanted with rounded bristles. Therefore, the area ratio of the first channel 22, the second channel 23, and the third channel 25 is actually the ratio of the sharpened bristle area to the rounded bristle area. As shown in Figure 12, for a single rounded brush filament, the thicker rounded brush filament has a stronger ability to resist deformation, and the pressure is mainly transmitted to the gum tissue through the tip of the rounded brush filament. For example, the pressure area of ​​a single 5mil rounded brush filament is πr 2 =π×0.1272=0.051mm 2 For a single sharpened brush wire, the thinner pointed brush wire has weak deformation ability, and the pressure is mainly transmitted to the gum tissue through the side of the sharpened brush wire after bending. For example, the pressure area of ​​a single 3mil sharpened brush wire is 2*r*L / 2=2×0.0.0762×1 / 2=0.0762mm 2As shown in Figure 13, for multiple rounded filaments, the coarser rounded filaments move primarily in a straight line, with pressure being transferred to the gum tissue only through a portion of the filaments. The number of rounded filaments per unit area is 206 per (R = 1 mm). For multiple sharpened filaments, the finer sharpened filaments move primarily in a curved line, with pressure being transferred to the gum tissue through nearly all of the sharpened filaments. The number of sharpened filaments per unit area is 592 per (R = 1 mm).

[0263] This shows that finer, sharpened filaments have a larger force-bearing area per strand, resulting in a greater number of sharpened filaments per unit area. Furthermore, the softer, sharpened filaments allow for the greatest possible contact with the gums, making them feel "softer" and more comfortable. Coarser, rounded filaments, on the other hand, have a smaller force-bearing area per strand and exert greater pressure on the teeth and gums, thus effectively removing food debris and dirt from the teeth and gums, resulting in a better cleaning effect.

[0264] As mentioned above, pointed bristles have better comfort, while rounded bristles have higher cleaning power. Therefore, the area ratio of the first channel 22, the second channel 23 and the third channel 25 will affect the comfort and cleaning power of the oral care element 110 of this embodiment.

[0265] In order to select the optimal ratio of the first channel 22, the second channel 23 and the third channel 25, in this embodiment, the first area 1, the second area 2, the third area 3, the fourth area 4 and the fifth area 5 are respectively implanted with sharpened bristles or rounded bristles, so that the sharpened bristle areas and the rounded bristle areas formed on the front surface have different proportions, and ten samples are formed as an implementation method, as shown in Figure 14.

[0266] It should be noted that the light-colored areas of the sample are implanted with sharpened bristles, while the dark-colored areas are implanted with rounded bristles. The areas of each sample in Figure 14 correspond to the first zone 1, second zone 2, third zone 3, fourth zone 4, and fifth zone 5 shown in Figure 5. The following describes the specific details of each sample.

[0267] Sample 1: The first zone 1, the second zone 2, the third zone 3, the fourth zone 4, and the fifth zone 5 are all implanted with sharpened brush filaments. The area of ​​rounded brush filaments accounts for 0%. The number of rounded brush filaments within the unit circle of r = 1 mm is 0, and the number of sharpened brush filaments is 592.

[0268] Sample 2: Sharpened brush filaments were implanted in the first zone 1, the second zone 2, the third zone 3, and the fifth zone 5, and rounded brush filaments were implanted in the fourth zone 4. The area of ​​the rounded brush filaments accounted for 2.03%. Within the unit circle of r = 1 mm, the number of rounded brush filaments was 4, and the number of sharpened brush filaments was 578.

[0269] Sample 3: Sharpened brush filaments are implanted in the first zone 1, the second zone 2, the third zone 3, the fourth zone 4, and one fifth zone 5. Rounded brush filaments are implanted in another fifth zone 5. The area of ​​the rounded brush filaments accounts for 5.44%. Within the unit circle of r = 1 mm, the number of rounded brush filaments is 11, and the number of sharpened brush filaments is 560.

[0270] Sample 4: Sharpened brush filaments were implanted in the first zone 1, the second zone 2, the third zone 3, and the fourth zone 4, and rounded brush filaments were implanted in the fifth zone 5. The area of ​​the rounded brush filaments accounted for 10.86%. Within the unit circle of r = 1 mm, the number of rounded brush filaments was 22, and the number of sharpened brush filaments was 528.

[0271] Sample 5: Sharpened brush filaments were implanted in the first zone 1, the second zone 2, the fourth zone 4, and the fifth zone 5, and rounded brush filaments were implanted in the third zone 3. The area of ​​the rounded brush filaments accounted for 14.19%. Within the unit circle of r = 1 mm, the number of rounded brush filaments was 29, and the number of sharpened brush filaments was 508.

[0272] Sample 6: Sharpened brush filaments were implanted in the first zone 1, the second zone 2, and the fifth zone 5, while rounded brush filaments were implanted in the third zone 3 and the fourth zone 4. The area of ​​the rounded brush filaments accounted for 16.22%. Within the unit circle of r = 1 mm, the number of rounded brush filaments was 33, and the number of sharpened brush filaments was 496.

[0273] Sample 7: Sharpened brush filaments were implanted in the first and second zones 1 and 2, and rounded brush filaments were implanted in the third, fourth, and fifth zones 5. The area of ​​the rounded brush filaments accounted for 27.08%. Within the unit circle of r = 1 mm, the number of rounded brush filaments was 56, and the number of sharpened brush filaments was 432.

[0274] Sample 8: Sharpened brush filaments were implanted in the first zone 1 and the fifth zone 5, and rounded brush filaments were implanted in the second zone 2, the third zone 3, and the fourth zone 4. The area of ​​the rounded brush filaments accounted for 50.75%. Within the unit circle of r = 1 mm, the number of rounded brush filaments was 105, and the number of sharpened brush filaments was 292.

[0275] Sample 9: Sharpened brush filaments were implanted in the third zone 3 and the fourth zone 4, and rounded brush filaments were implanted in the first zone 1, the second zone 2, and the fifth zone 5. The area of ​​the rounded brush filaments accounted for 83.78%. Within the unit circle of r = 1 mm, the number of rounded brush filaments was 173, and the number of sharpened brush filaments was 96.

[0276] Sample 10: The first zone 1, the second zone 2, the third zone 3, the fourth zone 4 and the fifth zone 5 are all implanted with rounded brush filaments, the area of ​​the rounded brush filaments accounts for 100%, the number of rounded brush filaments within the unit circle of r = 1 mm is 206, and the number of sharpened brush filaments is 0.

[0277] The above ten samples were subjected to cleaning power and softness experiments, and a chart of cleaning power and the area ratio of rounded brush filaments was obtained as shown in Figure 15, and a chart of softness and the area ratio of rounded brush filaments was obtained as shown in Figure 16. Among them, in Figure 15, the horizontal axis is the area ratio of rounded brush filaments, and the vertical axis is the cleaning power of the corresponding sample. The stronger the cleaning power, the larger the corresponding cleaning power value, and the smaller the cleaning power, the smaller the corresponding cleaning power value. In Figure 16, the horizontal axis is the area ratio of rounded brush filaments, and the vertical axis is the softness of the corresponding sample. The smaller the surface pressure of the sample's cleaning area, the larger the softness value, and the larger the surface pressure, the smaller the softness value.

[0278] It should be noted that the cleaning power in the chart in Figure 15 can be measured using testing equipment. The softness in the chart in Figure 16 is calculated by multiplying the number of bristles by the force-bearing area. A higher softness value indicates greater comfort, while a lower softness value indicates less comfort.

[0279] The applicant has found through a large number of experiments that, under the general trend, as the proportion of the area of ​​the rounded brush wires increases, the cleaning power continues to improve. When the proportion of the area of ​​the rounded brush wires is below 18%, as the proportion of the area of ​​the rounded brush wires increases, the cleaning power increases rapidly. When the proportion of the area of ​​the rounded brush wires is above 18%, the improvement in cleaning power slows down, and the trend line approaches a straight line. Those skilled in the art can understand that, as can be seen from Figure 15, when the proportion of the area of ​​the rounded brush wires is above 20%, continuing to increase the proportion of the area of ​​the rounded brush wires will slow down the effect of improving the cleaning power. According to the user oral cleaning test conducted by the applicant on samples 1 to 10, it was found that when the proportion of the area of ​​the rounded brush wires is above 10%, the oral care element 110 can already meet daily cleaning needs.

[0280] Through extensive experiments, the applicant has discovered that, generally speaking, as the proportion of rounded filament area increases, softness decreases, and the trend line approaches a straight line. Furthermore, as shown in Figure 17 , the scratches left on the sample by the reciprocating vibration of the oral care element 110 gradually become heavier and wider as the proportion of rounded filament area increases, indicating a continuous decrease in the comfort of the oral care element 110. Those skilled in the art will understand from Figure 16 that, while maintaining cleaning power, the proportion of rounded filament area should be minimized.

[0281] According to the above experimental content, the proportion ranges of the areas of the first channel 22, the second channel 23 and the third channel 25 are given below.

[0282] When only a sharpened brush wire with a diameter of 3 mil is provided in the first channel 22, that is, when the third channel 25 is not provided:

[0283] Optionally, the ratio of the area enclosed by the edges of the first channel 22 to the sum of the area enclosed by the edges of the first channel 22 and the area enclosed by the edges of the second channel 23 is greater than or equal to 0.6, that is, the area of ​​the sharpened brush filament region accounts for greater than or equal to 60%.

[0284] Optionally, the ratio of the area enclosed by the edges of the first channel 22 to the sum of the area enclosed by the edges of the first channel 22 and the area enclosed by the edges of the second channel 23 is greater than or equal to 0.8, that is, the area of ​​the sharpened brush filament region accounts for greater than or equal to 80%.

[0285] Optionally, the ratio of the area enclosed by the edge of the second channel 23 to the sum of the area enclosed by the edge of the first channel 22 and the area enclosed by the edge of the second channel 23 is greater than or equal to 0.1, that is, the area of ​​the rounded brush wire region accounts for greater than or equal to 10%.

[0286] Optionally, the ratio of the area enclosed by the edge of the second channel 23 to the sum of the area enclosed by the edge of the first channel 22 and the area enclosed by the edge of the second channel 23 is greater than or equal to 0.15, that is, the area of ​​the rounded brush wire region accounts for greater than or equal to 15%.

[0287] When two types of sharpened brush wires with diameters of 3 mil and 4 mil are set in the first channel 22, that is, the third channel 25 needs to be set as part of the first channel 22:

[0288] Optionally, the ratio of the sum of the areas enclosed by the edges of the first channel 22 and the third channel 25 to the sum of the areas enclosed by the edges of the first channel 22, the second channel 23, and the third channel 25 is greater than or equal to 0.6. That is, the area of ​​the sharpened brush filaments accounts for greater than or equal to 60%.

[0289] Optionally, the ratio of the sum of the areas enclosed by the edges of the first channel 22 and the third channel 25 to the sum of the areas enclosed by the edges of the first channel 22, the second channel 23, and the third channel 25 is greater than or equal to 0.8. That is, the area of ​​the sharpened brush filaments accounts for greater than or equal to 80%.

[0290] Optionally, the ratio of the area enclosed by the edges of the second channel 23 to the sum of the areas enclosed by the edges of the first channel 22, the second channel 23, and the third channel 25 is greater than or equal to 0.1. That is, the area of ​​the rounded brush filament region accounts for greater than or equal to 10%.

[0291] Optionally, the ratio of the area enclosed by the edges of the second channel 23 to the sum of the area enclosed by the edges of the first channel 22, the area enclosed by the edges of the second channel 23, and the area enclosed by the edges of the third channel 25 is greater than or equal to 0.15. That is, the area of ​​the rounded brush filament region accounts for greater than or equal to 15%.

[0292] Furthermore, this embodiment also provides the proportions of the first channels 22 and the second channels 23 on the front surface 21 , as well as the area ranges of the first channels 22 and the second channels 23 .

[0293] Optionally, the ratio of the area enclosed by the edge of the first channel 22 to the area of ​​the front surface 21 of the contact element carrier 20 is in a range of 0.2 to 0.6.

[0294] Optionally, the ratio of the area enclosed by the edge of the first channel 22 to the area of ​​the front surface 21 of the contact element carrier 20 is in a range of 0.3 to 0.5.

[0295] Optionally, the ratio of the area enclosed by the edge of the first channel 22 to the area of ​​the front surface 21 of the contact element carrier 20 is in the range of 0.4.

[0296] Specifically, the first channel 22 with a larger area can ensure that more sharpened brush filaments are set to ensure a soft touch and gently clean the gums. However, if the area occupied by the first channel 22 is too large, the structural strength of the contact element carrier 20 will be reduced, reducing practicality.

[0297] Furthermore, when the third channel 25 is provided, the area enclosed by the edges of the first channel 22 mentioned above refers to the sum of the areas enclosed by the edges of each first channel 22 and the areas enclosed by the edges of each third channel 25 .

[0298] Optionally, a ratio of an area enclosed by the edge of the second channel 23 to an area of ​​the front surface 21 of the contact element carrier 20 is in a range of 0.03 to 0.15.

[0299] Optionally, a ratio of an area enclosed by the edge of the second channel 23 to the front surface area 21 of the contact element carrier 20 is in a range of 0.05 to 0.10.

[0300] Optionally, a ratio of an area enclosed by the edge of the second channel 23 to the front surface area 21 of the contact element carrier 20 is in the range of 0.07.

[0301] Specifically, providing a second channel 23 with an appropriate area for rounded brush filaments ensures cleaning performance. However, if the second channel 23 occupies too large an area, it may cause a stinging sensation and reduce comfort. Furthermore, the overall area of ​​the first channel 22 and the second channel 23 should be reasonably proportioned. Their combined area should not occupy too much of the total area of ​​the front surface 21 of the contact element carrier 20, otherwise the structural strength of the contact element carrier 20 will be reduced.

[0302] Optionally, the area enclosed by the edges of each first channel 22 is not less than 3mm 2 The first channel 22 here refers to the first channel 22 provided with a sharpened brush wire with a diameter of 4 mil.

[0303] Optionally, the area enclosed by the edges of each first channel 22 is not less than 10 mm 2 .

[0304] Optionally, the area enclosed by the edges of each first channel 22 is not less than 15mm 2 The first channel 22 here refers to the first channel 22 provided with a sharpened brush wire with a diameter of 3 mil. Only when the first channel 22 has a larger area can it provide good support for the sharpened brush wire with a smaller diameter.

[0305] Optionally, the area enclosed by the edges of each second channel 23 is not less than 1mm 2 .

[0306] Optionally, the area enclosed by the edges of each second channel 23 is not less than 1.5 mm 2 .

[0307] Optionally, the area enclosed by the edges of each second channel 23 is not less than 3mm 2 .

[0308] 3. Hair Implantation Rate Values ​​of the First Contact Element Cluster, the Second Contact Element Cluster, and the Third Contact Element Cluster

[0309] The hair implantation rate of the first contact element cluster 30, the second contact element cluster 40, and the third contact element cluster 50 will affect their water absorption rate and comfort. The higher the hair implantation rate, the larger the surface area of ​​the brush filaments, the higher the water absorption rate, the longer the drying time after cleaning, and the easier it is for bacteria to grow. However, a hair implantation rate that is too low will make the oral care element 110 lose its softness and reduce comfort. Therefore, the hair implantation rate of the first contact element cluster 30, the second contact element cluster 40, and the third contact element cluster 50 needs to be reasonably set.

[0310] First, Figure 18 shows that, given the same unit area, sharpened filaments have a higher implantation rate and a larger overall surface area than rounded filaments. For a unit area of ​​R = 1mm, a clump of 3-mil-diameter sharpened filaments has a surface area 1.72 times greater than a clump of 5-mil-diameter rounded filaments.

[0311] Figure 19 shows a graph showing the changing trend of the area ratio of rounded filaments and the water absorption rate of the oral care element 110. The test method involves soaking a sample, then drying it, and measuring the residual water content. The horizontal axis represents the area ratio of the rounded filaments, and the vertical axis represents the water absorption of the sample. The greater the water absorption, the larger the vertical axis value.

[0312] As can be seen from Figure 19, as the ratio of rounded brush filaments increases and the density of brush filaments decreases, the water absorption after wetting decreases, which is beneficial to the drying of the brush head under the same air drying efficiency.

[0313] Figure 20 shows a graph showing the changing trend of the ratio of rounded filaments and the drying rate of the oral care element 110. The test lines represent the test results of Samples 1 to 10, representing the drying rate test results for different ratios of rounded filaments. The test method involves measuring the amount of residual water in the brush head every hour after wetting the sample. The horizontal axis represents the drying time, and the vertical axis represents the water absorption of the sample. The greater the water absorption, the larger the vertical axis value.

[0314] As can be seen from FIG. 20 , the slopes of the test lines are substantially the same, that is, the ratio of the area of ​​the differently rounded brush filaments to the area of ​​the rounded brush filaments has little effect on the drying rate of the oral care element 110 .

[0315] In summary, in this embodiment, factors to consider for the hair implantation rate of the first contact element cluster 30 , the second contact element cluster 40 , and the third contact element cluster 50 include:

[0316] 1. The hair implantation rate should be at least greater than 65%. A hair implantation rate below 65% will result in a decrease in product yield;

[0317] 2. When the hair transplant rate is greater than 70%, the comfort level is better;

[0318] 3. Considering the comfort and air-drying efficiency, the hair transplant rate can be selected as 80%;

[0319] 4. The process limit of hair implantation rate is 85%.

[0320] In summary:

[0321] When only a sharpened brush wire with a diameter of 3 mil is provided in the first channel 22, that is, when the third channel 25 is not provided:

[0322] Optionally, the ratio of the sum of the cross-sections of the plurality of first contact elements 32 perpendicular to the transverse axis 24 at the front surface 21 to the area enclosed by the edge of the first channel 22 is between 0.55 and 0.85, that is, the hair implantation rate of the first contact element cluster 30 is between 55% and 85%.

[0323] Further optionally, the ratio of the sum of the cross sections of the plurality of first contact elements 32 perpendicular to the transverse axis 24 at the front surface 21 to the area enclosed by the edge of the first channel 22 is 0.7, that is, the hair implantation rate of the first contact element cluster 30 is 70%.

[0324] Optionally, the ratio of the sum of the cross-sections of the second contact elements 42 perpendicular to the transverse axis 24 at the front surface to the area enclosed by the edge of the second channel 23 is between 0.55 and 0.85, that is, the hair implantation rate of the second contact element cluster 40 is between 55% and 85%.

[0325] Further optionally, the ratio of the sum of the cross sections of the plurality of second contact elements 42 perpendicular to the transverse axis 24 at the front surface to the area enclosed by the edge of the second channel 23 is 0.7, that is, the hair implantation rate of the second contact element cluster 40 is 70%.

[0326] When two types of sharpened brush wires with diameters of 3 mil and 4 mil are set in the first channel 22, that is, the third channel 25 needs to be set as part of the first channel 22:

[0327] Optionally, the ratio of the sum of the cross-sections of the plurality of third contact elements 52 perpendicular to the transverse axis 24 at the front surface 21 to the area enclosed by the edge of the third channel 25 is between 0.55 and 0.8, that is, the hair implantation rate of the third contact element cluster 50 is between 55% and 85%.

[0328] Further optionally, the ratio of the sum of the cross sections of the plurality of third contact elements 52 perpendicular to the transverse axis 24 at the front surface to the area enclosed by the edge of the third channel 25 is 0.7, that is, the hair implantation rate of the third contact element cluster 50 is 70%.

[0329] The relationship between the hair implantation rate and the number of sharpened filaments with a diameter of 3 mil within a unit circle with a radius of 1 mm is given below, so as to take into account both the comfort and the drying speed of the oral care element 110 .

[0330] The hair planting rate is 0%, and the number of sharpened brush filaments is 0;

[0331] The hair planting rate is 5%, and the number of sharpened brush filaments is 34;

[0332] The hair planting rate is 10%, and the number of sharpened brush filaments is 69;

[0333] The bristle rate is 20%, and the number of sharpened brush filaments is 138;

[0334] The hair planting rate is 30%, and the number of sharpened brush filaments is 207;

[0335] The bristle rate is 40%, and the number of sharpened brush filaments is 276;

[0336] The bristle rate is 50%, and the number of sharpened brush filaments is 344;

[0337] The bristle rate is 60%, and the number of sharpened brush filaments is 413;

[0338] The bristle rate is 70%, and the number of sharpened brush filaments is 482;

[0339] The bristle planting rate is 80% and the number of sharpened brush filaments is 551.

[0340] Furthermore, when two types of sharpened brush filaments with diameters of 3 mil and 4 mil are set in the first channel 22, that is, a third channel 25 needs to be set as part of the first channel 22, the relationship between the hair implantation rate and the number of sharpened brush filaments with a diameter of 4 mil can refer to the above values.

[0341] The relationship between the hair implantation rate and the number of 5 mil diameter rounded filaments within a unit circle with a radius of 1 mm is given below, so as to take into account both the cleaning power and the air-drying speed of the oral care element 110 .

[0342] The hair planting rate is 0%, and the number of rounded brush filaments is 0;

[0343] The hair planting rate is 5%, and the number of rounded brush wires is 12;

[0344] The flocking rate is 10%, and the number of rounded brush filaments is 25;

[0345] The hair planting rate is 20%, and the number of rounded brush filaments is 50;

[0346] The flocking rate is 30%, and the number of rounded brush filaments is 74;

[0347] The hair planting rate is 40%, and the number of rounded brush filaments is 99;

[0348] The flocking rate is 50%, and the number of rounded brush filaments is 124;

[0349] The hair planting rate is 60%, and the number of rounded brush filaments is 149;

[0350] The flocking rate is 70%, and the number of rounded brush filaments is 174;

[0351] The bristle implantation rate is 80% and the number of rounded brush filaments is 198.

[0352] In addition to the relationship between the implantation rate and the number of bristles of the sharpened and rounded brush filaments, this embodiment also provides the range of the number of the first contact elements 32 and the second contact elements 42 within a circle with a radius of 1 mm:

[0353] Optionally, within a circle with a radius of 1 mm, the number of first contact elements 32 ranges from 210 to 590.

[0354] Among them, 210 is the number of 4mil diameter sharpened brush wires at a hair planting rate of 65%, and 590 is the number of 3mil diameter sharpened brush wires at a hair planting rate of 85%.

[0355] Optionally, within a circle with a radius of 1 mm, the number of second contact elements 42 ranges from 90 to 329.

[0356] Among them, 90 is the number of 6mil diameter rounded brush wires at a hair planting rate of 65%, and 329 is the number of 4mil diameter rounded brush wires at a hair planting rate of 85%.

[0357] Optionally, within a circle with a radius of 1 mm, the number of first contact elements 32 ranges from 440 to 590.

[0358] Among them, 440 is the number of 3 mil diameter sharpened brush wires at a hair planting rate of 65%, and 590 is the number of 3 mil diameter sharpened brush wires at a hair planting rate of 85%.

[0359] Optionally, within a circle with a radius of 1 mm, the number of first contact elements 32 ranges from 210 to 330.

[0360] Among them, 210 is the number of 4 mil diameter sharpened brush wires at a hair planting rate of 65%, and 330 is the number of 4 mil diameter sharpened brush wires at a hair planting rate of 85%.

[0361] Optionally, within a circle with a radius of 1 mm, the number of the second contact elements 42 ranges from 90 to 220.

[0362] Among them, 90 is the number of 5mil diameter rounded brush wires at a hair planting rate of 65%, and 220 is the number of 5mil diameter rounded brush wires at a hair planting rate of 85%.

[0363] FIG21 shows an electric oral cleaning device 100 according to an embodiment of the present application. The electric oral cleaning device 100 includes the oral care element 110 described above, and a gripping portion 120. The gripping portion includes a housing for gripping, a drive assembly 121 disposed within the housing, an energy element 122, and a triggering element 123. The drive assembly 121 is coupled to the oral care element 110 of the above embodiment. When the triggering element 123 is triggered, the energy element 122 provides energy to the drive assembly 121, which drives the oral care element 110 to vibrate back and forth.

[0364] Furthermore, the electric oral care appliance 100 in this embodiment is an electric toothbrush. The driving component 121 may be a motor, the energy element 122 may be a battery, and the trigger element 123 may be a manual switch.

[0365] When using the electric toothbrush, the user flips the manual switch, which powers the motor with a battery. The motor starts and vibrates the housing. This vibration is transmitted to the main body 10 and the contact element carrier 20 at its end. The vibration of the contact element carrier 20 drives the first and second contact element clusters 30 and 40 to oscillate at high speed. The user then places the contact element carrier 20 in the mouth to clean it.

[0366] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. An oral care element (110), characterized in that: include: A main body (10), the main body (10) comprising a proximal end (11) and a distal end (12) extending along the main body axis, the distal end (12) being used to couple with a drive assembly (121); A contact element carrier (20) held at the proximal end (11), the contact element carrier (20) comprising a front surface (21), a first channel (22) and a second channel (23) respectively connected to the front surface (21), and a transverse axis (24) passing through a center point of the front surface (21) and perpendicular to the front surface (21); the first channel (22) and the second channel (23) are not connected to each other, and in a radial direction of the transverse axis (24) passing through both the first channel (22) and the second channel (23), an inner edge of the first channel (22) is located outside an outer edge of an outer edge of the second channel (24); A first contact element cluster (30) passes through the first channel (22) and extends from the front surface (21), the first contact element cluster (30) extending along the extension direction of the transverse axis (24), and the end forms an almost continuous first cleaning area surface (31); the first contact element cluster (30) is formed by a plurality of first contact elements (32), and the cross section of the first contact element (32) perpendicular to the transverse axis (24) has a maximum diameter or a maximum circumscribed circle diameter ranging from 3 mil to 4 mil; A second contact element cluster (40) passes through the second channel (23) and extends from the front surface (21), the second contact element cluster (40) extending along the extension direction of the transverse axis (24), and the end forms an almost continuous second cleaning area surface (41); the second contact element cluster (40) is formed by a plurality of second contact elements (42), and the cross section of the second contact element (42) perpendicular to the transverse axis (24) has a maximum diameter or a maximum circumscribed circle diameter ranging from 4 mil to 6 mil; The contact element carrier (20) exists in the cross section of the first channel (22) and the second channel (23), and the difference between the maximum length of the first contact element (32) extending from the front surface (21) and the shortest length of the second contact element (42) extending from the front surface (21) does not exceed 3 mm, or the difference between the maximum length of the second contact element (42) extending from the front surface (21) and the shortest length of the first contact element (32) extending from the front surface (21) in the cross section does not exceed 3 mm.

2. The oral care element (110) according to claim 1, characterized in that The contact element carrier (20) comprises a plurality of disconnected first channels (22).

3. The oral care element (110) according to claim 1, characterized in that The contact element carrier (20) comprises a plurality of disconnected second channels (23).

4. The oral care element (110) according to claim 1, characterized in that The first contact element (32) passing through some of the first channels (22) among the plurality of first channels (22) has a maximum diameter or a maximum circumscribed circle diameter of 3 mil in a cross section perpendicular to the transverse axis (24), and the first contact element (32) passing through another part of the first channels (22) among the plurality of first channels (22) has a maximum diameter or a maximum circumscribed circle diameter of 4 mil in a cross section perpendicular to the transverse axis (24).

5. The oral care element (110) according to claim 1, characterized in that The cross section of the second contact element (52) perpendicular to the transverse axis (42) has a maximum diameter or a maximum circumscribed circle diameter of 5 mil.

6. The oral care element (110) according to claim 1, characterized in that When the distal end (12) is coupled to the driving assembly (121) and driven by the driving assembly (121), the first contact element (32) and the second contact element (42) are driven to swing back and forth, and the setting of the first contact element cluster (30) and the second contact element cluster (40) satisfies the coefficient k, k = |A1-A2|÷L1, 1.6≦k≦2.4; Wherein, A1 is the swing amplitude of the first contact element (32), A2 is the swing amplitude of the second contact element (42), and L1 is the distance between the edges of the adjacent first channel (22) and the second channel (23).

7. The oral care element (110) according to claim 1, characterized in that The first projection length of the portion of the first contact element cluster (30) extending from the front surface (21) on the transverse axis (24) is in the range of 5 mm to 12 mm, and / or the second projection length of the portion of the second contact element cluster (40) extending from the front surface (21) on the transverse axis (24) is in the range of 5 mm to 12 mm.

8. The oral care element (110) according to claim 7, characterized in that A first projection length of a portion of the first contact element cluster (30) extending beyond the front surface (21) on the transverse axis (24) is in the range of 6 mm to 11 mm.

9. The oral care element (110) according to claim 7, characterized in that A second projection length of a portion of the second contact element cluster (40) extending beyond the front surface (21) on the transverse axis (24) is in the range of 8 mm to 13 mm.

10. The oral care element (110) according to claim 8, characterized in that A first projection length of a portion of the first contact element cluster (30) extending beyond the front surface (21) on the transverse axis (24) is in the range of 8 mm to 10 mm.

11. The oral care element (110) according to claim 9, characterized in that A second projection length of a portion of the second contact element cluster (40) extending beyond the front surface (21) on the transverse axis (24) is in the range of 8 mm to 10 mm.

12. The oral care element (110) according to any one of claims 1 to 11, characterized in that Taking the edge of the first channel (22) as a baseline, another first channel (22) and / or the second channel (23) exists in a region extending outwards by 0.4 mm to 1.0 mm in width; and / or, Taking the edge of the second channel (23) as a baseline, another second channel (23) and / or the first channel (22) exists in a region extending outwards by 0.4 mm to 1.0 mm in width.

13. The oral care element (110) according to claim 12, characterized in that Taking the edge of the first channel (22) as a baseline, another first channel (22) and / or the second channel (23) exists in a region extending outwards by 0.6 mm to 0.8 mm in width; and / or, Taking the edge of the second channel (23) as a baseline, another second channel (23) and / or the first channel (22) exists in a region extending outwards by 0.6 mm to 0.8 mm in width.

14. The oral care element (110) according to claim 13, characterized in that Taking the edge of the first channel (22) as a baseline, another first channel (22) and / or the second channel (23) exists in a region extending outwards by 0.7 mm in width; and / or, Taking the edge of the second channel (23) as a baseline, another second channel (23) and / or the first channel (22) exist in a region extending outwards by 0.7 mm in width.

15. The oral care element (110) according to claim 1, characterized in that The contact element carrier (20) exists in a cross section of an adjacent first channel (22) and a second channel (23), and the difference between the maximum length of the first contact element (32) extending from the front surface (21) and the shortest length of the second contact element (42) extending from the front surface (21) does not exceed 3 mm, or the difference between the maximum length of the second contact element (42) extending from the front surface (21) and the shortest length of the first contact element (32) extending from the front surface (21) in the cross section does not exceed 3 mm.

16. The oral care element (110) according to claim 1, characterized in that The rigidity of the first contact element (32) is less than or equal to the rigidity of the second contact element (42).

17. The oral care element (110) according to claim 1, characterized in that In a cross section of the first contact element (32) along its extension direction, the end extending out of the front surface is conical, and in a cross section of the second contact element (42) along its extension direction, the end extending out of the front surface is arc-shaped or nearly arc-shaped.

18. The oral care element (110) according to claim 1, characterized in that The ratio of the sum of the cross sections of the plurality of first contact elements (32) at the front surface (21) perpendicular to the transverse axis (24) to the area enclosed by the edge of the first channel (22) is between 0.65 and 0.

85.

19. The oral care element (110) according to claim 1, characterized in that The ratio of the sum of the cross sections of the plurality of second contact elements (42) at the front surface perpendicular to the transverse axis (24) to the area enclosed by the edge of the second channel (23) is between 0.65 and 0.

85.

20. The oral care element (110) according to claim 1, characterized in that The ratio of the area enclosed by the edge of the first channel (22) to the sum of the area enclosed by the edge of the first channel (22) and the area enclosed by the edge of the second channel (23) is greater than or equal to 0.

6.

21. The oral care element (110) according to claim 1, characterized in that The ratio of the area enclosed by the edge of the second channel (23) to the sum of the area enclosed by the edge of the first channel (22) and the area enclosed by the edge of the second channel (23) is greater than or equal to 0.

1.

22. The oral care element (110) according to claim 21, characterized in that The ratio of the area enclosed by the edge of the second channel (23) to the sum of the area enclosed by the edge of the first channel (22) and the area enclosed by the edge of the second channel (23) is greater than or equal to 0.

15.

23. The oral care element (110) according to claim 1, characterized in that The maximum cross-sectional shape of the first contact element (32) is a triangle, a rhombus, or a polygon with no less than four sides, and / or the maximum cross-sectional shape of the second contact element (42) is a triangle, a rhombus, or a polygon with no less than four sides.

24. An electric oral cleaning device, characterized in that: comprising an oral care element (110) as claimed in any one of claims 1 to 23, and a grip portion, The gripping portion comprises a housing for gripping, a driving component (121) and an energy element (122) arranged inside the housing, and A trigger element (123); The driving component (121) is coupled to the oral care element (110). If the trigger element (123) is triggered, the energy element (122) provides energy to the driving component (121) so that the driving component (121) drives the oral care element (110) to vibrate back and forth.

25. An oral care element (110), characterized in that include: A main body (10), the main body (10) comprising a proximal end (11) and a distal end (12) extending along the main body axis, the distal end (12) being used to couple with a drive assembly (121); A contact element carrier (20) held at the proximal end (11), the contact element carrier (20) comprising a front surface (21), a first channel (22) and a second channel (23) respectively connected to the front surface (21), and a transverse axis (24) passing through a center point of the front surface (21) and perpendicular to the front surface (21); the first channel (22) and the second channel (23) are not connected to each other, and in a radial direction of the transverse axis (24) passing through both the first channel (22) and the second channel (23), an inner edge of the first channel (22) is located outside an outer edge of an outer edge of the second channel (24); A first contact element cluster (30) passes through the first channel (22) and extends from the front surface (21); the first contact element cluster (30) extends along the extension direction of the transverse axis (24) and forms an almost continuous first cleaning area surface (31) at the end; the first contact element cluster (30) is formed by a plurality of first contact elements (32). The second contact element cluster (40) passes through the second channel (23) and extends from the front surface (21). The second contact element cluster (40) extends along the extension direction of the transverse axis (24) and forms an almost continuous second cleaning area surface (41) at the end. The second contact element cluster (40) is formed by a plurality of second contact elements (42). The ratio of the sum of the cross-sections of the plurality of first contact elements (32) at the front surface (21) perpendicular to the transverse axis (24) to the area enclosed by the edge of the first channel (22) is between 0.55 and 0.85, and / or the ratio of the sum of the cross-sections of the plurality of second contact elements (42) at the front surface perpendicular to the transverse axis (24) to the area enclosed by the edge of the second channel (23) is between 0.55 and 0.

85.

26. The oral care element (110) of claim 1, characterized in that The ratio of the sum of the cross sections of the plurality of first contact elements (32) at the front surface (21) perpendicular to the transverse axis (24) to the area enclosed by the edge of the first channel (22) is 0.

7.

27. The oral care element (110) of claim 1, characterized in that The ratio of the sum of the cross sections of the plurality of second contact elements (42) at the front surface perpendicular to the transverse axis (24) to the area enclosed by the edge of the second channel (23) is 0.

7.

28. The oral care element (110) of claim 1, characterized in that In the first channel (22), and within a circle with a radius of 1 mm, the number of the first contact elements (32) ranges from 210 to 590.

29. The oral care element (110) according to claim 1, characterized in that In the second channel (23), and within a circle with a radius of 1 mm, the number of the second contact elements (42) ranges from 90 to 329.

30. The oral care element (110) according to claim 4, characterized in that In the first channel (22), and within a circle with a radius of 1 mm, the number of the first contact elements (32) ranges from 440 to 590.

31. The oral care element (110) according to claim 4, characterized in that In the first channel (22), and within a circle with a radius of 1 mm, the number of the first contact elements (32) ranges from 210 to 330.

32. The oral care element (110) according to claim 4, characterized in that In the second channel (23), and within a circle with a radius of 1 mm, the number of the second contact elements (42) ranges from 90 to 220.

33. The oral care element (110) according to any one of claims 2 to 8, characterized in that The cross section of the first contact element (32) perpendicular to the transverse axis (24) has a maximum diameter or a maximum circumscribed circle diameter ranging from 3 mil to 4 mil; and / or the cross section of the second contact element (42) perpendicular to the transverse axis (24) has a maximum diameter or a maximum circumscribed circle diameter ranging from 4 mil to 6 mil; The contact element carrier (20) exists in the cross section of the first channel (22) and the second channel (23), and the difference between the maximum length of the first contact element (32) extending from the front surface (21) and the shortest length of the second contact element (42) extending from the front surface (21) does not exceed 3 mm, or the difference between the maximum length of the second contact element (42) extending from the front surface (21) and the shortest length of the first contact element (32) extending from the front surface (21) in the cross section does not exceed 3 mm.

34. The oral care element (110) according to any one of claims 2 to 8, characterized in that The contact element carrier (20) comprises a plurality of disconnected first channels (22).

35. The oral care element (110) according to any one of claims 2 to 8, characterized in that The contact element carrier (20) comprises a plurality of disconnected second channels (23).

36. The oral care element (110) according to claim 9, characterized in that The first contact element (32) passing through some of the first channels (22) among the plurality of first channels (22) has a maximum diameter or a maximum circumscribed circle diameter of 3 mil in a cross section perpendicular to the transverse axis (24), and the first contact element (32) passing through another part of the first channels (22) among the plurality of first channels (22) has a maximum diameter or a maximum circumscribed circle diameter of 4 mil in a cross section perpendicular to the transverse axis (24).

37. The oral care element (110) according to claim 9, characterized in that The cross section of the second contact element (52) perpendicular to the transverse axis (42) has a maximum diameter or a maximum circumscribed circle diameter of 5 mil.

38. The oral care element (110) according to claim 9, characterized in that When the distal end (12) is coupled to the driving assembly (121) and driven by the driving assembly (121), the first contact element (32) and the second contact element (42) are driven to swing back and forth, and the setting of the first contact element cluster (30) and the second contact element cluster (40) satisfies the coefficient k, k = |A1-A2|÷L1, 1.6≦k≦2.4; Wherein, A1 is the swing amplitude of the first contact element (32), A2 is the swing amplitude of the second contact element (42), and L1 is the distance between the edges of the adjacent first channel (22) and the second channel (23).

39. The oral care element (110) according to claim 9, characterized in that The first projection length of the portion of the first contact element cluster (30) extending from the front surface (21) on the transverse axis (24) is in the range of 5 mm to 12 mm, and / or the second projection length of the portion of the second contact element cluster (40) extending from the front surface (21) on the transverse axis (24) is in the range of 5 mm to 12 mm.

40. The oral care element (110) of claim 15, wherein: A first projection length of a portion of the first contact element cluster (30) extending beyond the front surface (21) on the transverse axis (24) is in the range of 6 mm to 11 mm.

41. The oral care element (110) of claim 15, characterized in that A second projection length of a portion of the second contact element cluster (40) extending beyond the front surface (21) on the transverse axis (24) is in the range of 8 mm to 13 mm.

42. The oral care element (110) of claim 16, wherein: A first projection length of a portion of the first contact element cluster (30) extending beyond the front surface (21) on the transverse axis (24) is in the range of 8 mm to 10 mm.

43. The oral care element (110) of claim 17, characterized in that A second projection length of a portion of the second contact element cluster (40) extending beyond the front surface (21) on the transverse axis (24) is in the range of 8 mm to 10 mm.

44. The oral care element (110) according to any one of claims 2 to 8, characterized in that Taking the edge of the first channel (22) as a baseline, another first channel (22) and / or the second channel (23) exists in a region extending outwards by 0.4 mm to 1.0 mm in width; and / or, Taking the edge of the second channel (23) as a baseline, another second channel (23) and / or the first channel (22) exists in a region extending outwards by 0.4 mm to 1.0 mm in width.

45. The oral care element (110) of claim 20, characterized in that Taking the edge of the first channel (22) as a baseline, another first channel (22) and / or the second channel (23) exists in a region extending outwards by 0.6 mm to 0.8 mm in width; and / or, Taking the edge of the second channel (23) as a baseline, another second channel (23) and / or the first channel (22) exists in a region extending outwards by 0.6 mm to 0.8 mm in width.

46. ​​The oral care element (110) of claim 21, characterized in that Taking the edge of the first channel (22) as a baseline, another first channel (22) and / or the second channel (23) exists in a region extending outwards by 0.7 mm in width; and / or, Taking the edge of the second channel (23) as a baseline, another second channel (23) and / or the first channel (22) exist in a region extending outwards by 0.7 mm in width.

47. The oral care element (110) of claim 20, characterized in that The contact element carrier (20) exists in a cross section of an adjacent first channel (22) and a second channel (23), and the difference between the maximum length of the first contact element (32) extending from the front surface (21) and the shortest length of the second contact element (42) extending from the front surface (21) does not exceed 3 mm, or the difference between the maximum length of the second contact element (42) extending from the front surface (21) and the shortest length of the first contact element (32) extending from the front surface (21) in the cross section does not exceed 3 mm.

48. The oral care element (110) according to any one of claims 2 to 8, characterized in that The rigidity of the first contact element (32) is less than or equal to the rigidity of the second contact element (42).

49. The oral care element (110) according to any one of claims 2 to 8, characterized in that In the cross section of the first contact element (32) along its extension direction, the end extending out of the front surface is tapered, and in the cross section of the second contact element (42) along its extension direction, the end extending out of the front surface is arc-shaped or nearly arc-shaped.

50. The oral care element (110) according to any one of claims 2 to 8, characterized in that The ratio of the area enclosed by the edge of the first channel (22) to the sum of the area enclosed by the edge of the first channel (22) and the area enclosed by the edge of the second channel (23) is greater than or equal to 0.

6.

51. The oral care element (110) according to any one of claims 2 to 8, characterized in that The ratio of the area enclosed by the edge of the second channel (23) to the sum of the area enclosed by the edge of the first channel (22) and the area enclosed by the edge of the second channel (23) is greater than or equal to 0.

1.

52. The oral care element (110) of claim 27, wherein: The ratio of the area enclosed by the edge of the second channel (23) to the sum of the area enclosed by the edge of the first channel (22) and the area enclosed by the edge of the second channel (23) is greater than or equal to 0.

15.

53. The oral care element (110) according to any one of claims 2 to 8, characterized in that The maximum cross-sectional shape of the first contact element (32) is a triangle, a rhombus, or a polygon with no less than four sides, and / or the maximum cross-sectional shape of the second contact element (42) is a triangle, a rhombus, or a polygon with no less than four sides.

54. An electric oral cleaning device, characterized in that: comprising an oral care element (110) as claimed in any one of claims 1 to 29, and a grip portion, The gripping portion comprises a housing for gripping, a driving component (121), an energy element (122), and a trigger element (123) arranged inside the housing; The driving component (121) is coupled to the oral care element (110). If the trigger element (123) is triggered, the energy element (122) provides energy to the driving component (121) so that the driving component (121) drives the oral care element (110) to vibrate back and forth.

55. An oral care element (110), characterized in that include: A main body (10), the main body (10) comprising a proximal end (11) and a distal end (12) extending along the main body axis, the distal end (12) being used to couple with a drive assembly (121); A contact element carrier (20) held at the proximal end (11), the contact element carrier (20) comprising a front surface (21), a first channel (22) and a second channel (23) respectively connected to the front surface (21), and a transverse axis (24) passing through a center point of the front surface (21) and perpendicular to the front surface (21); the first channel (22) and the second channel (23) are not connected to each other; A first contact element cluster (30) passes through the first channel (22) and extends from the front surface (21), the first contact element cluster (30) extending along the extension direction of the transverse axis (24), and the end thereof forming an almost continuous first cleaning area surface (31); the first contact element cluster (30) is formed by a plurality of first contact elements (32); A second contact element cluster (40) passes through the second channel (23) and extends from the front surface (21), the second contact element cluster (40) extending along the extension direction of the transverse axis (24), and the end thereof forming an almost continuous second cleaning area surface (41); the second contact element cluster (40) is formed by a plurality of second contact elements (42); The ratio of the area enclosed by the edges of the first channel (22) to the sum of the areas enclosed by the edges of the first channel (22) and the areas enclosed by the edges of the second channel (23) is greater than or equal to 0.6, and / or the ratio of the area enclosed by the edges of the second channel (23) to the sum of the areas enclosed by the edges of the first channel (22) and the areas enclosed by the edges of the second channel (23) is greater than or equal to 0.

1.

56. The oral care element (110) of claim 1, characterized in that The ratio of the area enclosed by the edge of the first channel (22) to the sum of the area enclosed by the edge of the first channel (22) and the area enclosed by the edge of the second channel (23) is greater than or equal to 0.

8.

57. The oral care element (110) of claim 1, characterized in that The ratio of the area enclosed by the edge of the second channel (23) to the sum of the area enclosed by the edge of the first channel (22) and the area enclosed by the edge of the second channel (23) is greater than or equal to 0.

15.

58. The oral care element (110) of claim 1, characterized in that The ratio of the area enclosed by the edge of the first channel (22) to the front surface area of ​​the contact element carrier (20) is in the range of 0.2 to 0.

6.

59. The oral care element (110) of claim 4, characterized in that The ratio of the area enclosed by the edge of the first channel (22) to the front surface area of ​​the contact element carrier (20) is in the range of 0.3 to 0.

5.

60. The oral care element (110) of claim 4, characterized in that The ratio of the area enclosed by the edge of the first channel (22) to the front surface area of ​​the contact element carrier (20) is in the range of 0.

4.

61. The oral care element (110) of claim 1, characterized in that The ratio of the area enclosed by the edge of the second channel (23) to the front surface area of ​​the contact element carrier (20) is in the range of 0.03 to 0.

15.

62. The oral care element (110) of claim 1, wherein: The ratio of the area enclosed by the edge of the second channel (23) to the front surface area of ​​the contact element carrier (20) is in the range of 0.05 to 0.

10.

63. The oral care element (110) of claim 1, characterized in that The ratio of the area enclosed by the edge of the second channel (23) to the front surface area of ​​the contact element carrier (20) is in the range of 0.

07.

64. The oral care element (110) of claim 2, characterized in that The cross section of the first contact element (32) perpendicular to the transverse axis (24) has a maximum diameter or a maximum circumscribed circle diameter ranging from 3 mil to 4 mil, and / or the cross section of the second contact element (42) perpendicular to the transverse axis (24) has a maximum diameter or a maximum circumscribed circle diameter ranging from 4 mil to 6 mil, The contact element carrier (20) exists in the cross section of the first channel (22) and the second channel (23), and the difference between the maximum length of the first contact element (32) extending from the front surface (21) and the shortest length of the second contact element (42) extending from the front surface (21) does not exceed 3 mm, or the difference between the maximum length of the second contact element (42) extending from the front surface (21) and the shortest length of the first contact element (32) extending from the front surface (21) in the cross section does not exceed 3 mm.

65. The oral care element (110) of claim 2, characterized in that The contact element carrier (20) comprises a plurality of disconnected first channels (22).

66. The oral care element (110) of claim 2, characterized in that The contact element carrier (20) comprises a plurality of disconnected second channels (23).

67. The oral care element (110) of claim 2, characterized in that The first contact element (32) passing through some of the first channels (22) among the plurality of first channels (22) has a maximum diameter or a maximum circumscribed circle diameter of 3 mil in a cross section perpendicular to the transverse axis (24), and the first contact element (32) passing through another part of the first channels (22) among the plurality of first channels (22) has a maximum diameter or a maximum circumscribed circle diameter of 4 mil in a cross section perpendicular to the transverse axis (24).

68. The oral care element (110) of claim 2, characterized in that The cross section of the second contact element (52) perpendicular to the transverse axis (42) has a maximum diameter or a maximum circumscribed circle diameter of 5 mil.

69. The oral care element (110) of claim 11, characterized in that The area enclosed by the edges of each first channel (22) is not less than 3 mm2.

70. The oral care element (110) of claim 11, characterized in that The area enclosed by the edges of each first channel (22) is not less than 10 mm2.

71. The oral care element (110) of claim 11, characterized in that The area enclosed by the edges of each first channel (22) is not less than 15 mm2.

72. The oral care element (110) of claim 12, wherein: The area enclosed by the edges of each second channel (23) is not less than 1 mm2.

73. The oral care element (110) of claim 12, wherein: The area enclosed by the edges of each second channel (23) is not less than 1.5 mm2.

74. The oral care element (110) of claim 12, characterized in that The area enclosed by the edges of each second channel (23) is not less than 3 mm2.

75. The oral care element (110) of claim 2, characterized in that When the distal end (12) is coupled to the driving assembly (121) and driven by the driving assembly (121), the first contact element (32) and the second contact element (42) are driven to swing back and forth, and the setting of the first contact element cluster (30) and the second contact element cluster (40) satisfies the coefficient k, k = |A1-A2|÷L1, 1.6≦k≦2.4; Wherein, A1 is the swing amplitude of the first contact element (32), A2 is the swing amplitude of the second contact element (42), and L1 is the distance between the edges of the adjacent first channel (22) and the second channel (23).

76. The oral care element (110) of claim 2, characterized in that The first projection length of the portion of the first contact element cluster (30) extending from the front surface (21) on the transverse axis (24) is in the range of 5 mm to 12 mm, and / or the second projection length of the portion of the second contact element cluster (40) extending from the front surface (21) on the transverse axis (24) is in the range of 5 mm to 12 mm.

77. The oral care element (110) of claim 20, characterized in that A first projection length of a portion of the first contact element cluster (30) extending beyond the front surface (21) on the transverse axis (24) is in the range of 6 mm to 11 mm.

78. The oral care element (110) of claim 20, wherein: A second projection length of a portion of the second contact element cluster (40) extending beyond the front surface (21) on the transverse axis (24) is in the range of 8 mm to 13 mm.

79. The oral care element (110) of claim 21, characterized in that A first projection length of a portion of the first contact element cluster (30) extending beyond the front surface (21) on the transverse axis (24) is in the range of 8 mm to 10 mm.

80. The oral care element (110) of claim 22, wherein: A second projection length of a portion of the second contact element cluster (40) extending beyond the front surface (21) on the transverse axis (24) is in the range of 8 mm to 10 mm.

81. The oral care element (110) of claim 2, characterized in that Taking the edge of the first channel (22) as a baseline, another first channel (22) and / or the second channel (23) exists in a region extending outwards by 0.4 mm to 1.0 mm in width; and / or, Taking the edge of the second channel (23) as a baseline, another second channel (23) and / or the first channel (22) exists in a region extending outwards by 0.4 mm to 1.0 mm in width.

82. The oral care element (110) of claim 27, wherein: Taking the edge of the first channel (22) as a baseline, another first channel (22) and / or the second channel (23) exists in a region extending outwards by 0.6 mm to 0.8 mm in width; and / or, Taking the edge of the second channel (23) as a baseline, another second channel (23) and / or the first channel (22) exists in a region extending outwards by 0.6 mm to 0.8 mm in width.

83. The oral care element (110) of claim 26, characterized in that Taking the edge of the first channel (22) as a baseline, another first channel (22) and / or the second channel (23) exists in a region extending outwards by 0.7 mm in width; and / or, Taking the edge of the second channel (23) as a baseline, another second channel (23) and / or the first channel (22) exist in a region extending outwards by 0.7 mm in width.

84. The oral care element (110) of claim 27, wherein: The contact element carrier (20) exists in a cross section of an adjacent first channel (22) and a second channel (23), and the difference between the maximum length of the first contact element (32) extending from the front surface (21) and the shortest length of the second contact element (42) extending from the front surface (21) does not exceed 3 mm, or the difference between the maximum length of the second contact element (42) extending from the front surface (21) and the shortest length of the first contact element (32) extending from the front surface (21) in the cross section does not exceed 3 mm.

85. The oral care element (110) of claim 2, characterized in that The rigidity of the first contact element (32) is less than or equal to the rigidity of the second contact element (42).

86. The oral care element (110) of claim 2, characterized in that In a cross section of the first contact element (32) along its extension direction, the end extending out of the front surface is conical, and in a cross section of the second contact element (42) along its extension direction, the end extending out of the front surface is arc-shaped or nearly arc-shaped.

87. The oral care element (110) of claim 2, characterized in that The ratio of the sum of the cross sections of the plurality of first contact elements (32) at the front surface (21) perpendicular to the transverse axis (24) to the area enclosed by the edge of the first channel (22) is between 0.65 and 0.

85.

88. The oral care element (110) of claim 2, characterized in that The ratio of the sum of the cross sections of the plurality of second contact elements (42) at the front surface perpendicular to the transverse axis (24) to the area enclosed by the edge of the second channel (23) is between 0.65 and 0.

85.

89. The oral care element (110) of claim 2, characterized in that The maximum cross-sectional shape of the first contact element (32) is a triangle, a rhombus, or a polygon with no less than four sides, and / or the maximum cross-sectional shape of the second contact element (42) is a triangle, a rhombus, or a polygon with no less than four sides.

90. The oral care element (110) of claim 2, characterized in that In the radial direction of the transverse axis (24) passing through both the first channel (22) and the second channel (23), the inner edge of the first channel (22) is located outside the outer edge of the second channel (24).

91. An electric oral cleaning device, characterized in that: comprising an oral care element (110) as claimed in any one of claims 1 to 36, and a grip portion, The holding portion comprises a shell for holding, a driving component (121), an energy element (122), and a trigger element (123) arranged inside the shell; the driving component (121) is coupled with the oral care element (110), and if the trigger element (123) is triggered, the energy element (122) provides energy to the driving component (121), so that the driving component (121) drives the oral care element (110) to vibrate back and forth.

Images