Cleaning assembly for an oral care implement and oral care implement

Abstract

The application discloses a cleaning assembly of an oral care implement and the oral care implement. The cleaning assembly comprises a head and a rod. The head comprises a bearing surface and a back surface arranged oppositely, and the bearing surface is used for arranging a cleaning unit. A first end of the rod is connected with the head, and a second end of the rod is provided with a slot used for connecting a power output shaft. The slot has a first axial line, at least one of the head and the rod extends along a first direction line, a preset included angle is formed between the first axial line and the first direction line, and in a direction in which the second end points to the first end, the first direction line gradually moves away from the first axial line on a side of the back surface, so that at least one of the head and the rod is inclined to the side of the back surface relative to the first axial line. The cleaning assembly can balance the torque exerted on the power output shaft by one side of the cleaning unit and the torque exerted on the power output shaft by the back surface, and can reduce eccentric vibration and noise under the premise that the appearance of the head and the rod is not changed.

Description

Technical Field

[0001] This utility model relates to the field of oral care technology, and in particular to cleaning components and oral care appliances. Background Technology

[0002] Oral care products enable users to clean their teeth, gums, tongue, and other parts of their mouths independently. They offer high cleaning frequency, save time and effort, and have an increasingly broad user base. As a result, a wide variety of oral care products are constantly emerging in the market.

[0003] Oral care appliances generally have a cleaning component for cleaning the target oral cavity area and a drive mechanism for driving the cleaning component to work. The output end of the drive mechanism is connected to the cleaning component to drive the cleaning component to move and clean teeth.

[0004] Existing oral care devices suffer from dynamic imbalance during operation. Specifically, the cleaning components in current oral care devices generally consist of a housing and a cleaning unit. The mounting holes in the housing are roughly along the centerline of the brush head, meaning the output shaft is also roughly along the centerline of the housing. While the weight distribution on each side of the housing relative to the centerline is relatively uniform, the cleaning unit (e.g., bristles, silicone tips) mounted on the housing has a complex shape and an uneven weight distribution relative to the housing's centerline. This results in an uneven weight distribution of the entire cleaning component relative to the centerline of the mounting holes. When the cleaning component is connected to the drive mechanism, the torque generated by the cleaning component relative to the motor's output shaft is uneven. This uneven torque reduces the motor's lifespan and also generates significant noise.

[0005] Existing technologies have proposed adding counterweights to the housing to improve dynamic balance, but this approach would increase the weight of the cleaning components, and the required output power of the motor might need to be increased to drive the brush head to move smoothly. Utility Model Content

[0006] In view of this, the present invention proposes a cleaning component for an oral care device and an oral care device, aiming to improve the dynamic balance of the cleaning component while ensuring the comfort of teeth cleaning.

[0007] The first aspect of this utility model discloses a cleaning component for an oral care device, comprising: a head, including a bearing surface and a back surface, the bearing surface and the back surface being disposed opposite to each other, the bearing surface being used to mount a cleaning unit; and a rod, a first end of which is connected to the head, and a second end of which is provided with a slot for connecting a power output shaft; wherein the slot has a first axial line, the slot extending along the first axial line such that the power output shaft mounted in the slot is arranged along the first axial line, the first axial line and a first direction line forming a preset angle, and in the direction from the second end to the first end, the first direction line gradually moves away from the first axial line toward the side facing the back surface, such that at least one of the head and the rod is tilted relative to the first axial line toward the side facing the back surface. It is understood that the first axial line is also the extension direction line of the slot, and when the power output shaft is mounted in the slot, the length direction of the power output shaft is along the first axial line.

[0008] As can be seen from the above technical solution, the cleaning component of the oral care appliance proposed in the first aspect of this utility model has its head and / or rod extending at a preset angle to the first axial line of the slot in the rod. Therefore, while preserving the shape of the head and rod, the center of gravity of the cleaning component in this solution is positioned closer to the back side compared to existing cleaning components. This makes the torque applied to the power output shaft by one side of the cleaning unit and the torque applied to the power output shaft by the back side more balanced, thereby reducing eccentric vibration of the cleaning component, improving the dynamic balance performance of the cleaning component during teeth cleaning, reducing noise generated during oral care, and extending the service life of the power mechanism that cooperates with the cleaning component. During oral care, the back of the head of the cleaning component makes less contact with the oral cavity, ensuring comfort during oral care.

[0009] In some embodiments, both the head and the rod extend along the first direction line, and in the direction from the second end to the first end, the entire assembly formed by the head and the rod gradually tilts towards the side where the back is located relative to the first axial line. This allows the entire cleaning assembly, after being connected to the power output shaft, to tilt towards the back side relative to the axis of the power output shaft, thereby distributing more weight of the cleaning assembly to the back side. This allows for adjustment of the cleaning assembly's center of gravity, making the torque applied to the power output shaft from one side of the cleaning unit more balanced with the torque applied to the power output shaft from the back side. Furthermore, compared to partial tilting, overall tilting of the head and rod can distribute more weight to the back side at a smaller tilt angle, allowing for a smaller preset angle. If the preset angle is too large, it affects the force transmission from the handle to the rod, forcing the user to change their force application habits and causing discomfort; furthermore, if the rod tilts too far towards the back side, when the head is cleaning the molars, the rod will lift the corners of the mouth and cheeks, also causing user discomfort. Therefore, a smaller preset angle can reduce these adverse effects to some extent. Furthermore, if only one of the head and the rod is tilted, or only a portion of either is tilted, a bending area will form at the junction of the tilted and non-tilted sections. This bending area will cause stress concentration during use. In existing technologies, the head and rod are typically made of plastic. Although plastic has a certain degree of hardness, it still risks deformation under long-term stress concentration, affecting the lifespan of the cleaning assembly. Therefore, designing the entire head and rod to be tilted can avoid the aforementioned bending area, thus ensuring that the cleaning assembly's lifespan meets expectations.

[0010] In some embodiments, the preset included angle is α, where 0° < α ≤ 5°. This allows for adjustments to the cleaning assembly's center of gravity while minimizing changes to the overall appearance of the cleaning assembly connected to the power output shaft, and also reduces user discomfort caused by the overall tilt of the head and rod.

[0011] In some embodiments, within the region of the head, the first axial line passing through the geometric center of the slot lies between the first direction line passing through the geometric center of the head and the bearing surface; or, the first axial line passing through the geometric center of the slot passes through the bearing surface; or, the bearing surface is provided with a cleaning unit, the first axial line passing through the geometric center of the slot is offset from the head, and the first axial line passing through the geometric center of the slot passes through the cleaning unit. By adjusting the direction of the first axial line of the slot, the size of the preset angle can be easily determined at the production end, thereby facilitating equipment positioning.

[0012] In some embodiments, the rod is constructed as a rotating body, and the extension direction of the centerline of the rotating body is consistent with the first direction line. The rotating body configuration facilitates a more uniform weight distribution of the rod, helps determine the required preset angle, and adjusts the design direction of the first axial line of the slot. The extension direction of the rotating body is exactly the length direction of the rod, and the length direction of the head and the length direction of the rod can be designed to be the same, thereby improving the overall appearance of the cleaning assembly.

[0013] In some embodiments, the second end of the rod includes a bottom surface, the slot extends to the bottom surface, and the bottom surface is perpendicular to the first axial line. The bottom surface can serve as a machining positioning surface for the slot during production, and the slot only needs to be machined in a direction perpendicular to the bottom surface during production.

[0014] In some embodiments, the second end of the rod includes a bottom surface, the slot extends to the bottom surface, and the first axial line passes through the center of the bottom surface. This design aims to position the power take-off shaft as centrally as possible within the rod, reducing the risk of uneven weight distribution due to improper installation.

[0015] In some embodiments, the rod includes: a housing for connecting the head; a connector, at least a portion of which is disposed within the housing, and a slot disposed within the connector for connecting the power output shaft; wherein at least one of the housing and the head extends along the first direction line. In these embodiments of this application, the original structure and shape of the housing are kept as unchanged as possible. Only the arrangement of the slot within the connector and the structure of the connector are adjusted to achieve a preset angle between the first axial line and the first direction line. This allows for a more balanced torque applied to the power output shaft from one side and the back side of the cleaning unit without significantly altering the existing processing technology of the housing of the head and rod of the cleaning assembly. Moreover, compared to directly machining a slot whose extension direction is at an angle to the extension direction of the housing on a long, narrow housing, machining the slot on a shorter, smaller connector is obviously simpler and helps reduce the manufacturing difficulty.

[0016] In some embodiments of this application, the end of the housing away from the head has a mounting cavity, the connector includes a post portion, the post portion is fitted into the mounting cavity, and the slot is disposed in the post portion; wherein, both the mounting cavity and the post portion extend along the first direction line. This solution utilizes the mounting cavity to assemble the post portion, which can realize the installation and positioning of the connector and the housing. Furthermore, since the post portion extends along the first direction line, it can be directly matched with existing housings without modifying the structural parameters of the housing. The mounting cavity and the post portion extend in the same direction, facilitating the smooth insertion of the post portion into the mounting cavity along the first direction, achieving effective cooperation between the post portion and the mounting cavity.

[0017] In some embodiments of this application, the thickness of the annular cross-section obtained by cutting the portion of the housing having the mounting cavity with a plane perpendicular to the first direction line is equal at all points. That is, the thickness of the housing is uniformly distributed in the circumferential direction around the first direction line, minimizing the problem of uneven force balance caused by uneven housing thickness. It should be noted that these embodiments also include cases where the thickness of the annular cross-section has slight differences in a very small number of locations. These differences may be due to factors such as machining precision or clearance grooves formed to avoid pillars, and have little overall impact on the weight distribution of the housing. Therefore, the thickness distribution is still uniform overall, and these very special cases should be included in the embodiments.

[0018] In some embodiments of this application, the connector includes a stop portion connected to the column portion, and the slot passes through the stop portion; wherein, the end of the housing away from the head has a bottom surface, the bottom surface abutting against the surface of the stop portion, and the bottom surface is perpendicular to the first direction line. In these embodiments, the column portion is connected to the mounting cavity, and the stop portion is matched with the bottom surface of the housing, thereby forming abutment and limiting mating surfaces between the connector and the housing in multiple directions. That is, the design of the stop portion provides a limit for the entire connector, making the position of the connector stable relative to the housing after connection, preventing displacement, and also allowing the power output shaft to stably drive the entire cleaning assembly after insertion into the slot of the connector.

[0019] In some embodiments of this application, the stop portion includes a first stop surface, which abuts against and fits against the bottom end surface; wherein, the first stop surface is perpendicular to the first direction line. In these embodiments, the first stop surface on the stop portion automatically fits and limits the bottom end surface of the housing, and the housing and the connector maintain their original mating state after fitting and limiting each other. The mutually perpendicular first stop surface and column portion also facilitate equipment calibration and positioning, improving the yield of manufactured products.

[0020] In some embodiments of this application, the column portion includes a second stop surface. When the column portion is connected to the mounting cavity, the second stop surface engages with the top surface of the mounting cavity. The second stop surface forms a second angle with the first axial line, and the first angle is equal to the second angle. In these embodiments, the mating surfaces formed by the second stop surface and the top surface of the mounting cavity, and the mating surfaces formed by the first stop surface and the bottom surface of the housing, are approximately parallel, and the first and second angles are approximately the same. Therefore, the slot of the connector is not perpendicular to the first and second stop surfaces, but is inclined relative to them. This allows for a more balanced torque applied to the power output shaft from one side and the other side after the power output shaft is inserted into the slot.

[0021] In some embodiments of this application, the connector further includes a bottom surface facing away from the first stop surface. On the side corresponding to the bearing surface, the height difference between the first stop surface and the bottom surface of the connector is L1, and on the side corresponding to the back surface, the height difference between the first stop surface and the bottom surface of the connector is L2. L1 is greater than L2, and the height difference between the first stop surface and the bottom surface of the connector gradually decreases from the cleaning unit to the back surface. The included angle between the first stop surface and the bottom surface is equal to the preset included angle. That is, for the first stop surface and the bottom surface arranged opposite to each other on the stop portion, under the conditions that the first stop surface and the outer shell are in a limiting fit, the bottom surface and the handle are in a limiting fit, and the bottom surface is easy to process, the height difference L1 between the first stop surface and the bottom surface is greater than L2. This allows the first axial line to extend along a preset direction and forms a preset angle between the first axial line and the first direction line, facilitating the determination of the size of the preset angle and simplifying the design and determination of product yield. Furthermore, without altering the processing of the head and rod housings of the cleaning component to the greatest extent possible, it is only necessary to change the structural parameters of the connector and the extension direction of the slot in the connector to achieve a more balanced torque applied to the power output shaft on one side and the power output shaft on the back side of the cleaning unit, thereby reducing the eccentric vibration of the cleaning component.

[0022] The oral care appliance according to the second aspect of this utility model includes: a handle and a cleaning component of the oral care appliance described in any of the foregoing embodiments, wherein the handle includes a power output shaft connected in the slot.

[0023] As can be seen from the above technical solution, the oral care device proposed in the second aspect of this utility model has the aforementioned cleaning component of the oral care device, and therefore also has the aforementioned technical effect of the cleaning component. The torque applied to the power output shaft on one side of the cleaning unit and the torque applied to the power output shaft on the back side are more balanced, reducing the eccentric vibration of the cleaning component. The power output shaft can drive the cleaning component to move smoothly and with low noise.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the disclosure of the embodiments of this utility model. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the cleaning component of an oral care device proposed in some embodiments of this utility model; Figure 2 This is a side view of the cleaning component of an oral care device according to some embodiments of the present invention; Figure 3 This is an exploded view of the cleaning component of an oral care device according to some embodiments of the present invention; Figure 4 This is a cross-sectional view of the cleaning component of an oral care device according to some embodiments of the present invention; Figure 5 This is a sectional view of the split structure of the cleaning component of the oral care tool proposed in some embodiments of this utility model; Figure 6 This is a schematic diagram of the cleaning component of an oral care device according to some embodiments of the present invention, wherein the first axial line passes through the area between the first axial line and the bearing surface; Figure 7 This is a schematic diagram of the cleaning component of an oral care device according to some embodiments of the present invention, wherein the first axial line passes through the bearing surface; Figure 8 This is a schematic diagram of the cleaning component of an oral care device according to some embodiments of the present invention, wherein the first axial line passes through the cleaning unit; Figure 9 This is a structural schematic diagram of an oral care device proposed in some embodiments of this utility model; Figure 10This is a schematic diagram of the separate structure of the cleaning component and handle of an oral care tool proposed in some embodiments of this utility model.

[0027] Explanation of reference numerals in the attached figures: 100. Clean up components; 10. Head; 101. Brush plate; 102. Soft rubber part; 12. Cleaning unit; 131. Support surface; 132. Back side; 133. Hair implantation hole; 20. Rod section; 201. First end; 202. Second end; 203. First direction line; 204. Preset included angle; 21. Outer shell; 211. Mounting cavity; 2111. Top surface; 212. Bottom surface; 22. Connecting parts; 221, Column; 2211, Second stop surface; 222, Stop section; 2221, First stop surface; 223. First axial line; 224. Bottom surface; 23. Slot; 1000. Oral care products; 500. Power take-off shaft; 600. Handle. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are all within the protection scope of the present utility model.

[0029] In the following embodiments, the oral care appliance 1000 is presented in the form of an electric toothbrush. It is understood that the form of the oral care appliance 1000 is not limited to an electric toothbrush, but may also be other oral care appliances with power output such as a water flosser with a vibrating head, a dental cleaning device, or a tongue brush.

[0030] Where there is no conflict, the following embodiments and features can be combined with each other.

[0031] Combination Figure 1 , Figure 2 , Figure 9 and Figure 10 As shown, an embodiment of this utility model provides a cleaning component 100 for an oral care appliance 1000, which can be used with... Figure 10 The power output shaft 500 of the handle 600 shown is connected to form a cleaning assembly 100 and an oral care appliance 1000 that can vibrate and / or swing.

[0032] Please refer to Figure 3 , Figure 4 and Figure 5 As shown, the cleaning component 100 of the oral care appliance 1000 includes a head 10 and a handle 20. The head 10 includes a bearing surface 131 and a back surface 132, which are disposed opposite to each other. The bearing surface 131 is used to mount a cleaning unit 12. The cleaning unit 12 can be various dental cleaning components for cleaning teeth, such as soft silicone strips and silicone blocks, or multi-bristled bristles.

[0033] Furthermore, such as Figure 6 , Figure 7 and Figure 8 As shown, the first end 201 of the rod 20 is connected to the head 10, and the second end 202 of the rod 20 is provided for connecting the power output shaft 500 (e.g., Figure 10 The slot 23 (shown) has a first axial line 223. At least one of the head 10 and the rod 20 extends along the first direction line 203. In other words, the head 10 extends along the first direction line 203, or the rod 20 extends along the first direction line 203, or both the head 10 and the rod 20 extend along the first direction line 203. It should be noted that the extension direction of the head 10 and the rod 20 in this application can retain the original shape design of the head 10 and the rod 20, and try not to change their shape; while the head 10 and the rod 20 can both extend along the first direction line 203, or one of them can extend along the first direction line 203 while the other extends in a different direction.

[0034] It should be noted that the statement that at least one of the head 10 and the rod 20 extends along the first direction line 203 should be interpreted broadly. That is, at least one of the head 10 and the rod 20 extends along the first direction line 203 as a whole. For example, the head 10 and the rod 20 may exhibit microscopic forms such as bends or arcs in certain sections, thus not microscopically following the first direction line 203, but overall, at least one of the head 10 and the rod 20 extends along the first direction line 203. In other words, the first direction line 203 can also be understood as the length direction line of the entire structure formed by the head 10 and the rod 20. Alternatively, refer to... Figure 6 The first direction line 203 can also be understood as the line connecting the center point of the top of the head 10 and the center point of the bottom of the rod 20. In short, the first direction line 203 can be understood as a line roughly representing the length direction.

[0035] Continue to refer to Figure 6 , Figure 7 and Figure 8As shown, a preset angle 204 is formed between the first axial line 223 and the first direction line 203. In the direction from the second end 202 to the first end 201, the first direction line 203 gradually moves away from the first axial line 223 towards the side facing the back surface 132, so that at least one of the head 10 and the rod 20 is tilted relative to the first axial line 223 towards the side facing the back surface 132. It should be noted that the preset angle 204 in this application is defined based on the angle formed between the first direction line 203 and the first axial line 223 of the slot 23 in this application, when the original extension direction of the head 10 or the rod 20 is used as the extension direction of the first direction line 203. In this application, the main focus is on the creative adjustment of the slot 23. The first axial line 223 of this application can also be considered as the axial extension direction of the slot 23.

[0036] As can be seen from the above, the cleaning component 100 of the oral care appliance 100 proposed in this application has its head 10 and / or rod 20 extending at a preset angle 204 to the first axial line 223 of the slot 23 in the rod 20. Therefore, while preserving the shape of the head 10 and rod 20, the center of gravity of the cleaning component 100 in this solution is closer to the side where the back surface 132 is located compared to existing cleaning components 100. This makes the torque applied to the power output shaft 500 by one side of the cleaning unit 12 and the torque applied to the power output shaft 500 by the back surface 132 more balanced, thereby reducing the eccentric vibration of the cleaning component 100, improving the dynamic balance performance of the cleaning component 100 during teeth cleaning, reducing noise generated during oral care, and extending the service life of the power mechanism that cooperates with the cleaning component 100. During oral care, the back surface 132 of the head 10 of the cleaning component 100 makes less contact with the oral cavity, ensuring comfort during oral care.

[0037] Understandably, in related technologies, after the brush head and brush handle are connected, the torque generated by the bristle-embedded side of the brush head relative to the motor output shaft is significantly greater than the torque generated by the brush back side relative to the motor output shaft. Uneven torque will reduce the service life of the motor and generate more noise. In this application, the cleaning component 100 adjusts the design structure of the slot 23 and adjusts the preset included angle 204. The torque applied by one side of the cleaning unit 12 to the power output shaft 500 and the torque applied by the back side 132 to the power output shaft 500 are more balanced, thereby effectively reducing the eccentric vibration of the cleaning component 100, extending the service life of the motor, and reducing noise.

[0038] It is understandable that in related technologies, a counterweight needs to be added to the brush head to improve the dynamic balance of the brush head, which makes the brush head heavier; the cleaning component 100 of this application does not require an additional counterweight, and maintains the original structure of the head 10 and the handle 20 as much as possible.

[0039] In some examples, such as Figure 3 As shown, multiple bristle holes 133 can be provided on the bearing surface 131. The cleaning unit 12 connected to the bearing surface 131 can be connected to the bearing surface 131 through the bristle holes 133. For example, the bristles can be fixed on the bristle holes 133 of the bearing surface 131 with or without copper bristles. The bristles are arranged in clusters in the bristle holes 133, so that the bristles are easy to arrange and the clustered bristles can resist a certain frictional force and are not easily damaged.

[0040] In some embodiments of this application, such as Figure 3 , Figure 4 and Figure 5 As shown, the head 10 includes a brush plate 101, a soft rubber part 102, and a cleaning unit 12. One side of the brush plate 101 forms a bearing surface 131, and the cleaning unit 12 is connected to the bearing surface 131. The other surfaces of the brush plate 101 are covered with the soft rubber part 102. The surface of the soft rubber part 102 facing away from the bearing surface 131 forms the back surface 132 of the head 10. The soft rubber part 102 can increase the user's comfort when brushing teeth and reduce the probability of hitting teeth when brushing.

[0041] In some embodiments, combined with Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, both the head 10 and the rod 20 extend along the first direction line 203. In the direction from the second end 202 to the first end 201, the entire structure formed by the head 10 and the rod 20 gradually tilts towards the side where the back surface 132 is located relative to the first axial line 223. Therefore, in these embodiments, the head 10 and the rod 20 extend in the same direction and both extend along the first direction line 203. This allows the entire cleaning assembly 100, after being connected to the power output shaft 500, to tilt towards the back surface 132 relative to the axis of the power output shaft 500. This allows more weight of the cleaning assembly 100 to be distributed to the back surface 132, thereby adjusting the center of gravity of the cleaning assembly 100 and making the torque applied to the power output shaft 500 by one side of the cleaning unit 12 and the torque applied to the power output shaft 500 by the back surface 132 more balanced. Moreover, compared to partial tilting, overall tilting of the head 10 and the rod 20 can distribute more weight to the back surface 132 at a smaller tilt angle, thus allowing the preset included angle 204 to be set smaller. If the preset angle 204 is too large, it will affect the force transmission from the handle 600 to the lever 20, forcing the user to change their force application habits and causing discomfort. On the other hand, if the lever 20 is tilted too far to the side facing the back 132, the lever 20 will lift up the corner of the mouth and cheek when the head 10 is cleaning the molars, which will also cause discomfort to the user. Therefore, a smaller preset angle 204 can reduce these adverse effects to some extent.

[0042] In some embodiments, the preset included angle 204 is denoted as α, where 0° < α ≤ 5°. For example, the angle of α includes values ​​such as 1°, 1.3°, 1.5°, 2°, 3°, 4°, or 5°. This allows for adjustments to the center of gravity of the cleaning assembly 100 while minimizing changes to the overall appearance of the cleaning assembly 100 after it is connected to the power output shaft 500, and also minimizes user discomfort caused by the overall tilt of the head 10 and the rod 20.

[0043] Based on the product's experimental data, when α is 1° and the embodiment is connected to the power output shaft for operation, compared with the comparative embodiment which has the same structure but is not tilted, the noise is reduced by about 1 dBA, the amplitude is increased by about 4%, and the power consumption is reduced by about 1.2%, showing that all performance aspects are positively improved.

[0044] In some embodiments, such as Figure 6 As shown, within the area of ​​the head 10, the first axial line 223 passing through the geometric center of the slot 23 is located in the region between the first direction line 203 passing through the geometric center of the head 10 and the bearing surface 131. Therefore, in these embodiments, the preset included angle 204 is relatively small, for example, α is 1°. This solution is suitable for situations where the overall weight of the cleaning unit 12 is relatively light.

[0045] In some other embodiments, such as Figure 7 As shown, the first axial line 223 passing through the geometric center of the slot 23 passes through the bearing surface 131. Therefore, in these embodiments, the angle of the preset included angle 204 is compared to... Figure 6 The preset included angle 204 in the embodiment is larger, for example, α is 2°.

[0046] In some other embodiments, such as Figure 8 As shown, the bearing surface 131 is provided with a cleaning unit 12. The first axial line 223 passing through the geometric center of the slot 23 is offset from the head 10, and the first axial line 223 passing through the geometric center of the slot 23 passes through the cleaning unit 12. In these embodiments, the angle of the preset included angle 204 is compared to... Figure 7 The preset included angle 204 in the embodiment is larger, for example, α is 5°. This solution is suitable for embodiments where the overall weight of the cleaning unit 12 is relatively heavy, such as embodiments where the cleaning unit 12 is a solid silicone block, and can distribute more weight to the right side of the first axial line 223.

[0047] Therefore, in this application, by adjusting the direction of the first axial line 223 of the slot 23, it is easier to determine the size of the preset included angle 204 at the production end, which facilitates equipment positioning and is beneficial for subsequent machining.

[0048] In some embodiments, the rod 20 is configured as a rotating body, and the extension direction of the centerline of the rotating body is consistent with the first direction line 203. In these embodiments, the arrangement of the rotating body is conducive to a more uniform weight distribution of the rod 20, facilitates the determination of the required preset included angle 204, and adjusts the design direction of the first axial line 223 of the slot 23. The extension direction of the rotating body is exactly the length direction of the rod 20. The length direction of the head 10 and the length direction of the rod 20 can be designed to be the same, so that both the head 10 and the rod 20 can extend along the first direction line 203, which improves visual consistency and coherence, thereby enhancing the overall appearance of the cleaning assembly 100.

[0049] In some embodiments, such as Figures 1 to 7 As shown, the rod portion 20 includes a housing 21 and a connector 22, wherein the housing 21 is used to connect the head 10, at least a portion of the connector 22 is disposed in the housing 21, and a slot 23 is disposed in the connector 22 for connecting the power output shaft 500; wherein at least one of the housing 21 and the head 10 extends along a first direction line 203. In these embodiments, the connector 22 may be entirely disposed in the housing 21, and in this application, the connector 22 may be partially disposed in the housing 21 and partially disposed outside the housing 21. In these embodiments of this application, the original structure and shape of the outer shell 21 are kept as unchanged as possible. By adjusting the setting structure of the slot 23 in the connector 22 and / or the structure of the connector 22, a preset angle 204 is achieved between the first axial line 223 and the first direction line 203. This allows for a more balanced torque applied to the power output shaft 500 on one side of the cleaning unit 12 and the torque applied to the power output shaft 500 on the back side 132 without significantly altering the processing of the outer shell 21 of the cleaning component 100 head 10 and rod 20. It is understood that processing the slot 23 on the shorter and smaller connector 22 is simpler than directly processing a slot 23 whose extension direction is at an angle to the extension direction of the outer shell 21 on the long strip-shaped outer shell 21. This helps reduce the manufacturing difficulty and minimizes changes to the original shape and structure of the outer shell 21.

[0050] In other embodiments, the slot 23 may also be formed directly inside the housing 21. These embodiments adjust the internal structure and local appearance of the housing 21 to achieve the first axial line 223 and the first direction line 203 of the slot 23 mentioned above in this application forming a preset included angle 204.

[0051] In some embodiments, such as Figures 1 to 8 As shown, connector 22 includes a bottom surface 224, referenced. Figure 9As shown, with the rod 20 connected to the handle 600, the bottom surface 224 faces the handle 600; the slot 23 extends to the bottom surface 224, and the bottom surface 224 is perpendicular to the first axial line 223. Before assembly or when assembled to the housing 21, the bottom surface 224 of the connector 22 is exposed on the outside for easy observation. Therefore, by providing a bottom surface 224 perpendicular to the first axial line 223, the bottom surface 224 can serve as a machining positioning surface for the slot 23 during production. During production, only the slot 23 needs to be machined along a direction perpendicular to the bottom surface 224, allowing for direct observation and serving as a reference surface for more precise machining. In this application, reference... Figure 9 and Figure 10 When the power output shaft 500 of the handle 600 is inserted into the slot 23, the distance between the top of the handle 600 and the bottom surface 224 can be relatively consistent, thus maintaining the external appearance; or, the top of the handle 600 can form a tight contact with the bottom surface 224, thus maintaining the integrity and aesthetics of the oral care tool.

[0052] It is understood that, in addition to the above embodiments, the rod 20 can also be a single piece, and the slot 23 can be directly formed on the rod 20. That is, the second end 202 of the rod 20 includes a bottom surface 224. At this time, the bottom surface 224 is the side of the rod 20 facing the handle 600, and the slot 23 extends to the bottom surface 224. The bottom surface 224 is perpendicular to the first axial line 223.

[0053] In some embodiments, combined with Figures 1 to 8 As shown, the first axial line 223 passes through the center of the bottom surface 224. When the power output shaft 500 is inserted into the slot 23, the power output shaft 500 also passes through the center of the bottom surface 224, that is, the power output shaft 500 is installed along the central axis of the connector 22, which avoids the problem of eccentric torque caused by the power output shaft 500 deviating from the axis as much as possible. Of course, if the rod 20 is a single piece, the bottom surface 224 is the side of the rod 20 facing the handle 600, and the first axial line 223 passes through the central axis of the rod 20 accordingly. Therefore, in this application, the position of the power output shaft 500 is located at the center of the rod 20 as much as possible, reducing the occurrence of uneven weight distribution of the rod 20 due to improper installation position.

[0054] In some embodiments of this application, such as Figure 4 and Figure 5 As shown, the end of the outer casing 21 away from the head 10 has a mounting cavity 211, such as Figures 3 to 8As shown, the connector 22 includes a post 221, which is fitted into the mounting cavity 211, and a slot 23 is disposed in the post 221. Both the mounting cavity 211 and the post 221 extend along the first direction line 203. Therefore, the fit between the post 221 and the mounting cavity 211 in these embodiments enables the connector 22 and the housing 21 to be installed and positioned. The mounting cavity 211 and the post 221 extend in the same direction, allowing the post 221 to be directly matched with the existing housing 21 without modifying the structural parameters of the housing 21. This facilitates the smooth insertion of the post 221 into the mounting cavity 211 along the first direction, achieving an effective fit between the post 221 and the mounting cavity 211.

[0055] In some embodiments of this application, the connector 22 further includes a stop portion, with the post portion 221 and the stop portion 222 connected. (Continuing with reference to...) Figure 4 and Figure 5 The column portion 221 is positioned within the mounting cavity 211. The end of the outer shell 21 away from the head 10 has a bottom surface 212, which abuts against the surface of the stop portion 222 and is perpendicular to the first direction line 203. In other words, the stop portion 222 and the bottom surface 212 of the outer shell 21 are positioned and engaged. The slot 23 is formed in the stop portion 222 and the column portion 221. In these embodiments, the column portion 221 and the mounting cavity 211 are positioned and engaged, and the stop portion 222 and the bottom surface 212 of the outer shell 21 are positioned and engaged, thereby increasing the contact and positioning surface between the connector 22 and the outer shell 21. In other words, the design of the stop portion 222 provides a limit for the entire connector 22, making the position of the connector 22 stable relative to the outer shell 21 after connection and preventing displacement. It also allows the power output shaft 500 to stably drive the entire cleaning assembly 100 after the power output shaft 500 is inserted into the slot 23 of the connector 22.

[0056] In some embodiments of this application, combined with Figure 3 , Figure 4 and Figure 7 As shown, the outer casing 21 extends along the first direction line 203, combined with Figure 5 and Figure 7 As shown, the mounting cavity 211 extends along the first direction line 203, and the bottom end face 212 is perpendicular to the first direction line 203. In these embodiments, the outer shell 21 and the mounting cavity 211 extend in the same direction. Before the outer shell 21 is assembled with the connector 22, the bottom end face 212 of the outer shell 21 is exposed to the outside. The bottom end face 212 of the outer shell 21 can be used as a tooling positioning surface, which facilitates the processing of the mounting cavity 211 during the processing, and also facilitates tooling positioning during the assembly of the connector 22, thereby improving the processing yield and batch stability.

[0057] In some embodiments, combined with Figure 5 and Figure 6At any position perpendicular to the first direction line 203, the thickness of the left and right sides of the outer shell 21 is approximately equal. That is, the thickness of the side of the outer shell 21 corresponding to the bearing surface 131 and the side corresponding to the back surface 132 is equal, avoiding the problem of uneven weight distribution caused by uneven thickness of the outer shell 21. It can also be understood that when the outer shell 21 is cut with a plane perpendicular to the first direction line 203, the thickness of the annular cross-section is approximately equal at all points. Approximately equal thickness means that a certain degree of error is allowed. The cause of the error may be manufacturing error, or a very small number of locations may have an uneven structure formed to adapt to the outer contour shape of the connector 22. However, these small errors have little impact on weight distribution, so these small errors are allowed.

[0058] In some embodiments of this application, combined with Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the stop portion 222 includes a first stop surface 2221, which abuts against the bottom end surface 212; wherein, the column portion 221 extends along the first direction line 203, the first stop surface 2221 is perpendicular to the first direction line 203, and the first stop surface 2221 is set at a first included angle with the first axial line 223, as shown. Figure 7 As shown, the first included angle is denoted as β. Based on the relative relationship between the first stop surface 2221 and the first direction line 203, and the relative relationship between the first direction line 203 and the first axial line 223, the first included angle β is approximately complementary to the preset included angle 204 of the aforementioned embodiment. Therefore, when α takes a larger angle, β is smaller; when α takes a smaller angle, β is larger. In these embodiments, the connector 22 can be directly matched with the existing housing 21 that is adapted to the shape of the column 221, without modifying the structural parameters of the housing 21. The mounting cavity 211 extends in the same direction as the column 221, facilitating the smooth insertion of the column 221 into the mounting cavity 211 along the first direction, achieving effective cooperation between the column 221 and the mounting cavity 211. At the same time, the first stop surface 2221 on the stop part 222 automatically forms a fit and limit with the bottom end surface 212 of the housing 21. After the housing 21 and the connector 22 achieve a fit and limit, they can maintain the original fit state without requiring any modifications to the housing 21 due to the setting of the slot 23. The mutually perpendicular first stop surface 2221 and the column 221 also facilitate equipment calibration and positioning. During the production process, calibration can be completed by detecting whether the first stop surface 2221 forms a perpendicular angle with the column 221, thereby improving the yield of the produced products.

[0059] In some embodiments of this application, such as Figure 3 and Figure 4As shown, the column portion 221 includes a second stop surface 2211. When the column portion 221 is connected to the mounting cavity 211, the second stop surface 2211 and the top surface 2111 of the mounting cavity 211 are in a limiting fit. The second stop surface 2211 and the first axial line 223 form a second included angle, where the first included angle is equal to the second included angle. Figure 7 As shown, the second included angle is denoted as γ. In these embodiments, the mating surfaces formed by the second stop surface 2211 and the top surface 2111 of the mounting cavity 211, and the mating surfaces formed by the first stop surface 2221 and the bottom surface 212 of the outer shell 21, are approximately parallel to each other. The first included angle, β, and the second included angle, γ, are also approximately the same. Therefore, the slot 23 of the connector 22 is not perpendicular to the first stop surface 2221 and the second stop surface 2211, but is inclined relative to the first stop surface 2221 and the second stop surface 2211. This allows at least the rod portion 20 to tilt relative to the first axial line 223 towards the side facing the back 132 after the power output shaft 500 is inserted into the slot 23. This achieves a more balanced torque applied to the power output shaft 500 by one side of the cleaning unit 12 and the torque applied to the power output shaft 500 by the side facing the back 132. In other embodiments of this application, since there may be multiple limiting fit structures between the connector 22 and the mounting cavity 211, such as a limiting groove on the outer wall of the column 221 and a limiting protrusion in the mounting cavity 211, under certain processing errors, after the limiting groove and the limiting protrusion are fitted, the second stop surface 2211 and the top surface 2111 may not form a limiting fit, but maintain a certain distance. At this time, the second stop surface 2211 can also be set at a second angle with the first axial line 223. Since the limiting groove and the limiting protrusion form a limiting fit, multiple limiting fits between the connector 22 and the rod 20 can also be realized, so that the position of the connector 22 relative to the rod 20 is fixed, thereby making the relative position of the slot 23 in the rod 20 determined.

[0060] In some embodiments of this application, please refer to Figure 8 As shown, connector 22 includes a bottom surface 224, referenced. Figure 7The bottom surface 224 faces away from the first stop surface 2211. On the side corresponding to the bearing surface 131, the height difference between the first stop surface 2221 and the bottom surface 224 of the connector 22 is L1. On the side corresponding to the back surface 132, the height difference between the first stop surface 2221 and the bottom surface 224 of the connector 22 is L2. L1 is greater than L2. In other words, for the first stop surface 2221 and the bottom surface 224 arranged opposite to each other on the stop portion 222, under the conditions that the first stop surface 2221 and the outer shell 21 are in a limiting fit, the bottom surface 224 and the handle 600 are in a limiting fit, and the bottom surface 224 is easy to process, the height difference L1 between the first stop surface 2221 and the second stop surface 2211 is greater than L2, which allows the first axial line 223 to extend along a preset direction and makes the first axial line 223 and the first direction line 203 form a preset angle 204. Thus, without changing the processing of the outer shell 21 of the head 10 and the rod portion 20 of the cleaning component 100 to the greatest extent, only the structural parameters of the connector 22 and the extension direction of the slot 23 in the connector 22 need to be changed to make the torque applied to the power output shaft 500 on one side of the cleaning unit 12 and the torque applied to the power output shaft 500 on the back side 132 more balanced, thereby reducing the eccentric vibration of the cleaning component 100 and thus reducing noise. At the same time, Figure 8 In the implementation method, based on the diameters of L1, L2 and the bottom surface 224, the approximate angle of the preset included angle 204 can be calculated, which makes it easy to confirm whether the angle meets the design requirements.

[0061] In some embodiments of this application, reference continues to be made to Figure 8 From the cleaning unit 12 to the back surface 132, the height difference between the first stop surface 2221 and the bottom surface 224 of the connector 22 gradually decreases. This makes the bottom surface 224 of the connector 22 a continuous and inclined surface relative to the first stop surface 2221, which also helps to form a limiting fit between the bottom surface 224 of the connector 22 and the end face of the handle 600, reducing the fit clearance. The included angle between the first stop surface 2221 and the bottom surface 224 is equal to the preset included angle 204. This makes it easy to determine the size of the preset included angle 204, facilitating design and determining product yield.

[0062] The oral care appliance 1000 of this application will now be described.

[0063] According to the oral care appliance 1000 proposed in this utility model, such as Figure 9 and Figure 10 As shown, it includes: a handle 600 and a cleaning assembly 100 of an oral care appliance 1000 according to any of the foregoing embodiments. The handle 600 includes a power output shaft 500, which is connected to a slot 23.

[0064] As can be seen from the above, the oral care appliance 1000 proposed in this application has the cleaning component 100 of the oral care appliance 1000 mentioned above, and therefore also has the technical effects of the cleaning component 100 mentioned above. The torque applied to the power output shaft 500 on one side of the cleaning unit 12 and the torque applied to the power output shaft 500 on the back side 132 are more balanced, reducing the eccentric vibration of the cleaning component 100. The power output shaft 500 can drive the cleaning component 100 to move smoothly and with low noise.

[0065] In some embodiments of this application, the oral care appliance 1000 further includes a drive mechanism (not shown in the figures). The drive mechanism includes a power output shaft 500 extending outward from the housing of the handle 600. The power output shaft 500 is used to connect to the aforementioned cleaning assembly 100 and serves as the output end of the drive mechanism, thereby providing the necessary driving force to the cleaning assembly 100. In some specific embodiments, the drive mechanism includes a linear motor and / or a rotary motor, or may also include other power components that enable oscillation; this is not limited here.

[0066] In this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of the stated features.

[0067] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A cleaning component for an oral care device, characterized in that, include: The head includes a bearing surface and a back surface, the bearing surface and the back surface being disposed opposite to each other, the bearing surface being used to mount a cleaning unit; A rod portion, the first end of which is connected to the head, and the second end of which is provided with a slot for connecting a power output shaft; The slot extends along a first axial line so that the power output shaft installed in the slot is arranged along the first axial line; at least one of the head and the rod extends along a first direction line, the first axial line and the first direction line form a preset angle, and in the direction from the second end to the first end, the first direction line gradually moves away from the first axial line toward the side facing the back, so that at least one of the head and the rod is tilted relative to the first axial line toward the side facing the back.

2. The cleaning component of the oral care appliance as described in claim 1, characterized in that, Both the head and the rod extend along the first direction line, and in the direction from the second end to the first end, the whole formed by the head and the rod gradually tilts towards the side where the back is located relative to the first axial line.

3. The cleaning component of the oral care appliance as described in claim 2, characterized in that, The preset included angle is α, where 0° < α ≤ 5°.

4. The cleaning component of the oral care appliance as described in claim 2, characterized in that, Within the region of the head, the first axial line passing through the geometric center of the slot is located in the area between the first direction line passing through the geometric center of the head and the bearing surface; Alternatively, the first axial line passing through the geometric center of the slot passes through the bearing surface; Alternatively, the bearing surface may be provided with a cleaning unit, the first axial line passing through the geometric center of the slot being offset from the head, and the first axial line passing through the geometric center of the slot passing through the cleaning unit.

5. The cleaning component of the oral care appliance as described in claim 1, characterized in that, The rod is constructed as a rotating body, and the extension direction of the centerline of the rotating body is consistent with the first direction line.

6. The cleaning component of the oral care appliance as described in claim 1, characterized in that, The second end of the rod includes a bottom surface, the slot extends to the bottom surface, and the bottom surface is perpendicular to the first axial line.

7. The cleaning component of the oral care appliance as described in claim 1, characterized in that, The second end of the rod includes a bottom surface, the slot extends to the bottom surface, and the first axial line passes through the center of the bottom surface.

8. The cleaning component of the oral care appliance as described in any one of claims 1 to 7, characterized in that, The rod portion includes: The outer casing is connected to the head; A connector, at least a portion of which is disposed in the housing, and a slot disposed in the connector for connecting the power output shaft; Wherein, at least one of the outer shell and the head extends along the first direction line.

9. The cleaning component of the oral care appliance as described in claim 8, characterized in that, The outer casing has a mounting cavity at the end away from the head, the connector includes a post portion, the post portion is fitted into the mounting cavity, and the slot is provided in the post portion; Both the mounting cavity and the column extend along the first direction line.

10. The cleaning component of the oral care appliance as described in claim 9, characterized in that, In the annular cross-section obtained by cutting the portion of the outer casing with the mounting cavity with any plane perpendicular to the first direction line, the thickness of the annular cross-section is equal at all points.

11. The cleaning component of the oral care appliance as described in claim 9, characterized in that, The connector includes a stop portion, which is connected to the post portion, and the slot passes through the stop portion; The outer shell has a bottom surface at the end away from the head, the bottom surface abuts against the surface of the stop portion, and the bottom surface is perpendicular to the first direction line.

12. The cleaning component of the oral care appliance as claimed in claim 11, characterized in that, The stop portion includes a first stop surface, which abuts against and fits against the bottom end surface; Wherein, the first stop surface is perpendicular to the first direction line.

13. The cleaning component of the oral care appliance as described in claim 8, characterized in that, The connector includes a stop portion, which has a bottom surface and a first stop surface. The bottom end surface of the housing abuts against the first stop surface. The bottom surface faces away from the first stop surface. The first stop surface is perpendicular to the first direction line, and the bottom surface is perpendicular to the first axial line. On the side corresponding to the bearing surface, the height difference between the first stop surface and the bottom surface is L1, and on the side corresponding to the back surface, the height difference between the first stop surface and the bottom surface is L2. L1 is greater than L2, and the height difference between the first stop surface and the bottom surface gradually decreases from the cleaning unit to the back surface. Wherein, the included angle between the first stop surface and the bottom surface is equal to the preset included angle.

14. An oral care device, characterized in that, include: The handle and the cleaning assembly of the oral care appliance as described in any one of claims 1 to 13, wherein the handle includes a power output shaft connected in the slot.

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