Oral cavity cleaning appliance handle and oral cavity cleaning appliance

Abstract

The invention relates to an oral cleaning appliance handle and an oral cleaning appliance. The oral cleaning appliance handle comprises a shell, a driving assembly and a sensor assembly. The driving assembly is arranged in the shell; the driving assembly comprises a driving motor, and the driving motor comprises an output shaft extending along a first axis; the driving motor is configured to output swinging power through an output shaft; the sensor assembly comprises a sensor body and a circuit connecting piece connected with the sensor body; the sensor body is arranged on the output shaft and is driven by the output shaft to move; the circuit connecting piece comprises a first bending part connected with the sensor body, and the first bending part is configured to surround the output shaft by less than one circle; in the unfolded state, the first bent part is configured to be in a waveform shape. In the process that the output shaft outputs the swing power, the first bent part is constructed to be compressed and stretched in a reciprocating mode. The circuit connecting piece is not prone to being broken, the service life is prolonged, and the accuracy of tooth brushing force detection is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of oral cleaning, and in particular to a handle of an oral cleaning device; the present disclosure also relates to an oral cleaning device. Background Art

[0002] As living standards improve, people's awareness of oral care has gradually increased, and oral cleaning tools on the market have become more diverse. Take an electric toothbrush as an example. The drive motor in the handle can drive the toothbrush head to swing or vibrate. When brushing teeth, the user holds the handle and presses the toothbrush head against the teeth to clean the teeth.

[0003] In the prior art, a sensor for detecting the user's brushing force can be set on the output shaft of the driving motor, and the user can be reminded when the brushing force is too strong, thereby protecting the user's dental health. The sensor is usually connected to the control motherboard using a circuit connector. However, the output shaft in the working state will drive the sensor to move together, and then involve the circuit connector. And with the advancement of technology, the rotation angle of the output shaft is getting larger and larger, which in turn causes the circuit connector to be subjected to greater and greater pulling force. This makes the circuit connector easy to break and reduce its lifespan, and the force of the reverse pull on the sensor is also likely to reduce the accuracy of detecting the brushing force. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present disclosure provides an oral cleaning tool handle and an oral cleaning tool.

[0005] According to a first aspect of the present disclosure, there is provided an oral cleaning appliance handle, comprising: a housing configured to be gripped; A drive assembly is disposed inside the housing; the drive assembly includes a drive motor, the drive motor includes an output shaft extending along a first axis; the drive motor is configured to output swing power through the output shaft; A sensor assembly includes a sensor body and a circuit connector connected to the sensor body; the sensor body is configured to be arranged on the output shaft and is configured to move under the driving action of the output shaft; the circuit connector includes a first bending portion connected to the sensor body, and the first bending portion is configured to surround the output shaft less than one circle; in the unfolded state, the first bending portion is configured to be a waveform; in the process of the output shaft outputting swinging power, the first bending portion is configured to be reciprocatedly compressed and stretched.

[0006] In one embodiment of the present disclosure, the first bending portion surrounds the output shaft by more than or equal to half a circle and less than one circle.

[0007] In one embodiment of the present disclosure, the circumference of the first bending portion ranges from 19 to 23 mm.

[0008] In one embodiment of the present disclosure, the circuit connector further includes a reinforcing portion connected to an end of the first bending portion away from the sensor body.

[0009] In one embodiment of the present disclosure, the first bending portion includes: a first connecting segment connected to the sensor body, a second connecting segment connected to the reinforcement portion, and a third connecting segment between the first connecting segment and the second connecting segment; wherein, the ratio of the length of the third connecting segment to the diameter of the drive motor is in the range of 0.78-0.8, and / or, the ratio of the length of the first connecting segment to the diameter of the drive motor is in the range of 0-0.27, and / or, the ratio of the length of the second connecting segment to the diameter of the drive motor is in the range of 0.16-0.44.

[0010] In one embodiment of the present disclosure, the diameter of the drive motor is in the range of 10-30 mm.

[0011] In one embodiment of the present disclosure, the first bending portion includes: a first connecting segment connected to the sensor body, a second connecting segment connected to the reinforcement portion, and a third connecting segment between the first connecting segment and the second connecting segment; wherein the length range of the third connecting segment is 14.21-23.69 mm, and / or the length range of the first connecting segment is 0-8 mm, and / or the length range of the second connecting segment is 2.9-12.93 mm.

[0012] In one embodiment of the present disclosure, the first bending portion includes: a first connecting segment connected to the sensor body, a second connecting segment connected to the reinforcement portion, and a third connecting segment between the first connecting segment and the second connecting segment; wherein the distance between the first connecting segment and the second connecting segment ranges from 9 to 15 mm.

[0013] In one embodiment of the present disclosure, the reinforcing portion of the circuit connector is disposed on the driving assembly and is configured to extend in the direction of the first axis.

[0014] In one embodiment of the present disclosure, a communication line is provided on the circuit connector, and the communication line is configured to be routed in parallel to an outer contour of the circuit connector, or is configured to be routed along a straight line.

[0015] In one embodiment of the present disclosure, the communication line located on the first bending portion is configured to be located on a side away from the output shaft.

[0016] In one embodiment of the present disclosure, the driving assembly includes a first side surface and a second side surface that are opposite to each other; the sensor body is mounted on the first side surface, and the reinforcing portion is located on the second side surface; the first bending portion is configured to be bent from the first side surface to the second side surface; The drive assembly also includes a flexible sleeve, which is configured to at least partially wrap the drive motor; a mounting groove extending along the first axis direction is provided on the second side of the flexible sleeve, and part of the reinforcement portion is configured to be located in the mounting groove.

[0017] In one embodiment of the present disclosure, in the direction of the first axis, the drive motor further includes an opposite end opposite to the output shaft; the flexible sleeve includes a front end sleeve and a rear end sleeve, and the front end sleeve and the rear end sleeve are respectively configured to partially wrap the output shaft and the opposite end of the drive motor; The mounting groove includes a first groove section located on the front end sleeve and a second groove section located on the rear end sleeve, the first groove section and the second groove section are connected to each other; the end of the reinforcement portion away from the first bending portion is constructed to be fixed to the second groove section.

[0018] In one embodiment of the present disclosure, a first positioning member is disposed in the first groove section, and a second positioning member is disposed at a position of the reinforcement portion corresponding to the front end sleeve; the second positioning member is constructed to be compatible with the first positioning member.

[0019] In one embodiment of the present disclosure, the circuit connector also includes a second bending portion, which is connected to an end of the reinforcement portion away from the first bending portion; a third slot section connected to the second slot section is also provided on the rear end sleeve; and the second bending portion is constructed to be partially located in the third slot section.

[0020] In one embodiment of the present disclosure, the reinforcement portion includes a first portion fixed in the mounting groove, and a second portion suspended relative to the mounting groove; the second portion has a thickness of 0.3±0.03 mm and a length of 1.4±0.2 mm.

[0021] In one embodiment of the present disclosure, the communication circuit includes a first circuit for connecting to the sensor body and arranged on the first bending portion and the second portion, and a second circuit arranged on the first portion; the second circuit is arranged on a side opposite to the first circuit; an end of the first circuit away from the sensor body is constructed to extend into the first portion to connect to the second circuit.

[0022] In one embodiment of the present disclosure, a corner is provided at the connection position between the first bending portion and the second portion; a third circuit is provided at a position corresponding to the corner on the circuit connector, and the third circuit is provided on the same side as the first circuit and is located on the inner side of the first circuit.

[0023] In one embodiment of the present disclosure, the angle between the connection position between the communication line and the sensor body and the first axis is 90±30°.

[0024] In one embodiment of the present disclosure, the communication line is made of rolled copper material, and the hardness of the reinforcement portion is greater than the hardness of the first bending portion.

[0025] In one embodiment of the present disclosure, a reinforcement structure is provided at the connection position between the reinforcement portion and the first bending portion.

[0026] In one embodiment of the present disclosure, in the extension direction of the first axis, a distance between a side of the first bending portion close to the end of the output shaft and the end of the output shaft is in a range of 31.07-32.05 mm.

[0027] In one embodiment of the present disclosure, it also includes a control main board; the control main board is constructed to be located in the housing and is constructed to be communicatively connected with the circuit connector; the control main board is configured to determine the pressure value received by the output shaft based on the electrical signal output by the sensor body; when the pressure value is greater than a threshold value, the control main board is configured to issue a prompt signal.

[0028] According to a second aspect of the present disclosure, there is also provided an oral cleaning device, comprising: The oral cleaning appliance handle according to the first aspect of the present disclosure; A brush head is arranged at the end of the handle of the oral cleaning tool and is configured to be connected to the output shaft.

[0029] One beneficial effect of the present disclosure is that by bending the circuit connector in a direction deviating from the first axis, there is always room for movement between the circuit connector and the output shaft during the process of the output shaft outputting swing power. Specifically, the first bent portion can surround the output shaft less than one circle, and in the unfolded state, the first bent portion can be constructed as a waveform, and the first bent portion arranged around the output shaft can be reciprocatedly compressed and stretched during the operation of the output shaft, thereby eliminating the stress during the operation of the output shaft and avoiding excessive pulling force on the circuit connector. The present disclosure makes the circuit connector less likely to break and increases its lifespan, while also ensuring the measurement accuracy of the sensor body, thereby improving the accuracy of detecting the brushing force, and helping to protect the user's dental health.

[0030] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0032] Figure 1 is a schematic diagram of the structure of an oral cleaning device in one embodiment of the present disclosure; Figure 2 is an exploded view of a handle of an oral cleaning device in one embodiment of the present disclosure; Figure 3 is a schematic diagram of the structure of a driving component and a sensor component in one embodiment of the present disclosure; Figure 4 is an exploded view of a drive assembly and a sensor assembly in one embodiment of the present disclosure; Figure 5 is a schematic structural diagram of a driving motor in one embodiment of the present disclosure; Figure 6 is a schematic structural diagram of a front end sleeve in an embodiment of the present disclosure; Figure 7 is a schematic diagram of an expanded sensor assembly in one embodiment of the present disclosure; Figure 8 is a schematic diagram of the expansion of the sensor assembly at another angle in one embodiment of the present disclosure; Fig. 9 is a communication line routing diagram of the front and back sides of a circuit connector in one embodiment of the present disclosure; Fig.10 yes Fig. 9 A partial enlarged view of the middle A; Fig.11 is a schematic structural diagram of a driving assembly and a sensor assembly in another embodiment of the present disclosure; Fig.12 is a schematic structural diagram of a driving assembly and a sensor assembly in another embodiment of the present disclosure; Fig.13 is a schematic structural diagram of a driving assembly and a sensor assembly in another embodiment of the present disclosure; Fig.14 is a schematic diagram of an expanded sensor assembly in another embodiment of the present disclosure; Fig.15 1 is a top view of a drive assembly and a sensor assembly in one embodiment of the present disclosure.

[0033] Figures 1 to 15 The one-to-one correspondence between the component names and the reference numerals is as follows: 100. Handle of oral cleaning device; 1. Housing; 10. Display area; 2. Driving assembly; 21. Driving motor; 211. Output shaft; 212. Opposite end; 213. Notch; 22. Flexible sleeve; 221. Front sleeve; 222. Rear sleeve; 223. Accommodating groove; 2241. First groove section; 2242. Second groove section; 2243. Third groove section; 2244. Positioning column; 3. Display assembly; 4. Sensor assembly; 41. Sensor body; 42. Circuit connector; 421. First bending portion; 4211. First connecting section; 4212. Second connecting section ; 4213, third connecting section; 422, reinforcement part; 4220, positioning groove; 4221, first part; 4222, second part; 423, second bending part; 4231, connecting end; 424, fixing glue; 431, first circuit; 432, second circuit; 433, third circuit; 4330, corner; 5, control main board; 61, light guide; 62, light ring; 7, bracket; 71, first installation space; 72, second installation space; 721, battery; 8, fixing cover; 80, opening; 81, screw; 9, flexible waterproof part; 200, brush head. DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0037] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0038] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0039] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the premise of each other's existence.

[0040] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0041] Embodiment 1 This embodiment provides an oral cleaning appliance handle 100, which can be used for oral cleaning appliances such as electric toothbrushes and integrated toothbrushes. Figures 1 to 3 The handle 100 of the oral cleaning device includes: a housing 1, a driving assembly 2 and a sensor assembly 4, wherein the housing 1 is configured to be suitable for holding, and a user can hold the housing 1 to operate the oral cleaning device. An inner cavity can be provided in the housing 1, and the inner cavity can be used to accommodate various components of the handle 100 of the oral cleaning device.

[0042] The drive assembly 2 is arranged inside the housing 1, referring to Figure 2 The drive assembly 2 includes a drive motor 21, and the drive motor 21 includes an output shaft 211 extending along the first axis. The drive motor 21 is configured to output a swinging force through the output shaft 211. The output shaft 211 can be used to connect the brush head 200 of the oral cleaning device, so that the drive motor 21 can drive the brush head 200 to swing, so that the oral cleaning device has a good cleaning effect. Specifically, the drive motor 21 can be a sonic motor, and its output shaft 211 can reciprocate forward and reverse at a predetermined angle with the first axis as the axis, thereby outputting a swinging force to drive the brush head 200 to sweep and vibrate. The user can easily clean the dirt on the toothbrush without swinging the wrist when brushing, thereby ensuring the cleaning effect.

[0043] refer to Figure 3 and Figure 4 The sensor assembly 4 includes a sensor body 41 and a circuit connection member 42. The sensor body 41 is configured to be disposed on the output shaft 211 and is configured to move under the driving action of the output shaft 211. Specifically, as Figure 5 As shown, a notch 213 is provided on the output shaft 211, and the sensor body 41 can be fixed in the notch 213. One end of the circuit connector 42 is connected to the sensor body 41, and the sensor body 41 provided on the output shaft 211 can detect the magnitude of the force applied to the output shaft 211. The circuit connector 42 can transmit the information detected by the sensor body 41 in the form of an electrical signal, thereby achieving real-time monitoring of the magnitude of the force applied to the output shaft 211. The user can know whether the current brushing force is appropriate, and thus adjust the force in time, which is beneficial to the health of teeth and periodontal tissues.

[0044] In one embodiment of the present disclosure, reference Figure 2The oral cleaning device handle 100 further includes a control mainboard 5, which is configured to be located in the housing 1 and is configured to be in communication with the circuit connector 42, which can be welded on the control mainboard 5. The control mainboard 5 can be fixed on the bracket 7 and connected to various components in the oral cleaning device handle 100, so as to control the components to work in coordination. For example, referring to Figure 3 In the first axis direction, the drive motor 21 further includes an opposite end 212 opposite to the output shaft 211, and the control main board 5 can be welded with the control circuit located at the opposite end 212 of the drive motor 21, so as to control the drive motor 21 to be turned on or off. The control main board 5 is configured to determine the pressure value of the output shaft 211 based on the electrical signal output by the sensor body 41, and when the pressure value is greater than the threshold value, the control main board 5 is configured to send a prompt signal.

[0045] Specifically, the handle 100 of the oral cleaning device further includes a light emitting component, which is configured to be partially exposed outside the housing 1 and is configured to be communicatively connected with the control mainboard 5. Figure 2 The light emitting assembly may include a light guide 61 and a light ring 62, referring to Figure 1 , the light guide 61 is partially exposed on the outside of the housing 1, and the light ring 62 is arranged on the inside of the light guide 61, which is fixed on the bracket 7 and welded to the control mainboard 5. The control mainboard 5 can control the light ring 62 to turn on or off. When the light ring 62 is turned on, the user can notice the light signal by observing the light guide 61. When the pressure value is greater than the threshold, the control mainboard 5 is configured to control the light-emitting component to output a light signal. It can be understood that when the pressure value is greater than the threshold, it means that the user's brushing force is too large. In order to remind the user to reduce the brushing force, the control mainboard 5 can control the light ring 62 to turn on, and the user can notice the light signal emitted by the light guide 61, thereby adjusting the brushing force, which is beneficial to protecting dental health.

[0046] With the development of technology, in order to increase the amplitude of sweeping vibration, the rotation angle of the output shaft 211 of the drive component 2 is getting larger and larger. Between product iterations, the rotation angle of the output shaft 211 has been increased from the previous conventional 5° swing limit to 30°, and can even be further upgraded to 60° or greater. The sensor body 41 installed on the output shaft 211 rotates at a large angle along with the output shaft 211, which causes the circuit connector 42 to be subjected to an increasing pulling force, making the circuit connector 42 prone to breakage, and also easily leading to a reduction in the accuracy of detecting the brushing force.

[0047] In order to solve the above technical problems, refer to Figure 3, the end of the circuit connector 42 that is not connected to the sensor body 41 is constructed to be bent in a direction deviating from the first axis and connected to the drive assembly 2. During the process of the output shaft 211 outputting the swinging power, there is always a movable space between the circuit connector 42 and the output shaft 211. The present disclosure bends the circuit connector 42 in a direction deviating from the first axis, so that during the process of the output shaft 211 outputting the swinging power, there is always a movable space between the circuit connector 42 and the output shaft 211. The movable space provides a space for the circuit connector 42 to deform during the operation of the output shaft 211, so that the circuit connector 42 will not be directly pulled by the output shaft 211. This design eliminates the stress during the operation of the output shaft 211 and avoids excessive pulling force on the circuit connector 42. The present disclosure makes the circuit connector 42 not easy to break and increases its service life. At the same time, it also ensures the measurement accuracy of the sensor body 41, thereby improving the accuracy of detecting the brushing force, which helps to protect the user's dental health.

[0048] Specifically, refer to Figure 4 and Figure 7 The circuit connector 42 includes a first bending portion 421 and a reinforcing portion 422. One end of the first bending portion 421 is connected to the sensor body 41, and the other end is bent to connect to the reinforcing portion 422. The reinforcing portion 422 is provided on the driving assembly 2 and is configured to extend along the direction of the first axis. It can be understood that the first bending portion 421 is a structure for bending, and can be made of a flexible material with a certain toughness.

[0049] In a specific embodiment of the present disclosure, the communication line in the circuit connector 42 is made of rolled copper material, which has higher ductility than electrolytic copper, so it is not easy to break, has good bending resistance, and is more suitable for high-frequency bending application scenarios. The substrate portion of the circuit connector 42 can be made of polyimide resin (PI) material. Specifically, the present disclosure adopts a glue-free rolling process to make rolled copper into copper foil. The copper foil is very thin, so it is necessary to coat the surface with liquid polyimide resin (PI) and then solidify it, thereby playing a role of strengthening and thickening, improving the strength of the circuit connector 42, making it not easy to break, and also forming insulation protection for the circuit connector 42.

[0050] The circuit connector 42 made of rolled copper and polyimide resin (PI) is flexible, so it can meet the deformation requirements of the first bending portion 421, and a plate with a certain hardness needs to be further provided in the reinforcement portion 422 so that the reinforcement portion 422 has a supporting function. The plate used in the reinforcement portion 422 can also have a certain elasticity, so that the reinforcement portion 422 can also vibrate with a small amplitude during the operation of the drive motor 21 to eliminate stress to a certain extent.

[0051] One end of the first bending portion 421 is directly connected to the sensor body 41 . When the sensor body 41 moves following the output shaft 211 , the first bending portion 421 is deformed under the pulling action of the sensor body 41 , thereby releasing the stress of the output shaft 211 during the sweeping vibration process.

[0052] The reinforcement portion 422 is constructed to be spaced apart from the output shaft 211, and the two ends of the first bending portion 421 are relatively flush on the horizontal plane perpendicular to the first axis to form a movable space. Ideally, both ends of the first bending portion 421 can be located on the horizontal plane perpendicular to the first axis, thereby forming a bending structure with both ends flush with each other; however, in the actual production and installation process, due to assembly errors, the two ends of the first bending portion 421 may not be completely flush on the horizontal plane. When it is within the allowable error range, it can be considered that the two ends of the first bending portion 421 are relatively flush. Since the shell of the drive component 2 has a certain thickness and the reinforcement portion 422 has sufficient hardness for support, even if part of the reinforcement portion 422 is not directly installed on the drive component 2, it can still maintain a certain distance from the output shaft 211.

[0053] One end of the first bending portion 421 used for connecting the sensor body 41 is located close to the output shaft 211, and one end used for connecting the reinforcement portion 422 is relatively farther away from the output shaft 211 and closer to the drive assembly 2. The first bending portion 421 and the reinforcement portion 422 are at different distances from the output shaft 211, but the two are basically located on the same horizontal plane perpendicular to the first axis. Specifically, the path of the first bending portion 421 bending in a direction deviating from the first axis is basically located on a horizontal plane perpendicular to the first axis, so that in the entire bending path, the first bending portion 421 always has a movable space with the output shaft 211, thereby providing a deformation space for the first bending portion 421, and the structure also ensures that the reinforcement portion 422 will not contact the output shaft 211.

[0054] In one embodiment of the present disclosure, in the extension direction of the first axis, the distance between the side of the first bend 421 close to the end of the output shaft 211 and the end of the output shaft 211 ranges from 31.07 to 32.05 mm. The first bend 421 and the sensor body 41 should not be installed at a position too close to the end of the output shaft 211. It is understandable that during operation, the swing amplitude at the end of the output shaft 211 is relatively the largest, which can easily apply excessive force to the first bend 421. The first bend 421 and the sensor body 41 should also not be installed at a position too far from the end of the output shaft 211, which will cause them to be too close to one side of the drive motor 21 and easily collide with other components.

[0055] Furthermore, the first bent portion 421 has a certain width. When installed, one side of the first bent portion 421 is closer to the end of the output shaft 211. For this side, the distance between the first bent portion 421 and the end of the output shaft 211 in the direction of the first axis is basically kept flush. It can be seen that the first bent portion 421 will not be twisted or pulled significantly in the direction of the first axis. However, due to assembly errors and in the process of moving with the output shaft 211, the first bent portion 421 will inevitably deform to a certain extent, which makes it impossible for the distance between its side and the end of the output shaft 211 to be fixed in a certain range, but will change within a small range.

[0056] The reinforcement part 422 is connected to the end of the first bending part 421 away from the sensor body 41. Since most of the force generated by the sweeping vibration of the output shaft 211 has been dissipated by the first bending part 421, the force that can be transmitted to the reinforcement part 422 through the first bending part 421 is relatively small. The reinforcement part 422 is mainly used to fix the circuit connection part 42 as a whole on the driving component 2, so as to prevent the circuit connection part 42 from swinging and colliding with surrounding components during the sweeping vibration process. Figures 2 to 4 The reinforcing portion 422 extends along the first axial direction, so that the circuit connector 42 extends from the output shaft 211 to the opposite end 212 , so as to facilitate communication connection with the control main board 5 arranged in the direction of the opposite end 212 .

[0057] In one embodiment of the present disclosure, the hardness of the reinforcing portion 422 is greater than the hardness of the first bending portion 421. The first bending portion 421 needs to be bent and should be easily deformed, so that it can be timely buffered by deformation to avoid the pulling force during the sweeping vibration process, so its hardness is relatively small. The reinforcing portion 422 is a structure for fixing, and it does not need to be bent, and always extends along the first axis, so its hardness is relatively large to ensure the strength of the entire circuit connector 42. Furthermore, the reinforcing portion 422 can support the first bending portion 421, thereby enhancing the installation stability of the first bending portion 421 relative to the drive assembly 2, so that the first bending portion 421 can maintain a distance from the output end 211.

[0058] In one embodiment of the present disclosure, a reinforcing structure is provided at the connection position between the reinforcing portion 422 and the first bent portion 421. For example, UV glue can be used to connect and fix the connection position between the first bent portion 421 and the reinforcing portion 422, thereby enhancing the strength of the soft and hard connection position, and preventing the connection position between the first bent portion 421 and the reinforcing portion 422 from breaking during the high-frequency sweep vibration of the output shaft 211.

[0059] In one embodiment of the present disclosure, reference Figure 3 and Fig.11, the first bending portion 421 is constructed to bend around or away from the output shaft 211. During the forward rotation of the output shaft 211, the bending degree of the first bending portion 421 increases, and the movable space decreases; during the reverse rotation of the output shaft 211, the bending degree of the first bending portion 421 decreases, and the movable space increases. Among them, the reduction and increase of the movable space can not only be understood as a change in volume, but also as a change in the space in which the first bending portion 421 can be further deformed: when the movable space decreases, the first bending portion 421 is squeezed and tightened, so the space in which it can be further deformed is reduced; when the movable space increases, the first bending portion 421 is relatively relaxed, so the space in which it can be further deformed is increased. It is understandable that the output shaft 211 will reciprocate forward and reverse during operation, and the movable space will therefore reciprocate to increase and decrease. However, no matter how the first bending portion 421 is deformed, there is always a movable space between the first bending portion 421 and the output shaft 211, and it is not easy to be entangled. The stress caused by high-frequency and large-amplitude vibration can be distributed during the deformation of the first bending portion 421, so that the stress is not concentrated on one point, thereby preventing the circuit connector 42 from breaking.

[0060] Specifically, when the first bending portion 421 surrounds the output shaft 211, it is defined that the first bending portion 421 surrounds the output shaft 211 in the clockwise direction from the end connected to the sensor body 41 to the end connected to the reinforcement portion 422. At this time, the output shaft 211 rotates forward, that is, counterclockwise, and reverses, that is, clockwise. When the output shaft 211 rotates forward, the first bending portion 421 is deformed in the direction close to the output shaft 211 under the driving action of the sensor body 41, that is, it surrounds the output shaft 211 more tightly, thereby increasing the bending degree of the first bending portion 421 and reducing the activity space; when the output shaft 211 reverses, the first bending portion 421 is deformed in the direction away from the output shaft 211 under the driving action of the sensor body 41, that is, it surrounds the output shaft 211 more loosely, thereby reducing the bending degree of the first bending portion 421 and increasing the activity space.

[0061] In the case where the first bent portion 421 is disposed away from the output shaft 211, Fig.11 , one end of the first bending portion 421 connected to the sensor body 41 extends in a direction deviating from the first axis and bends in a direction away from the output shaft 211. When the output shaft 211 rotates forward, the first bending portion 421 is deformed in a direction close to the output shaft 211 under the driving action of the sensor body 41, that is, the bending degree of the first bending portion 421 increases, and the activity space is reduced; when the output shaft 211 rotates reversely, the first bending portion 421 is deformed in a direction away from the output shaft 211 under the driving action of the sensor body 41, that is, the bending degree of the first bending portion 421 decreases, and the activity space is increased.

[0062] It should be noted that the present disclosure preferably adopts a solution in which the first bent portion 421 is arranged around the output shaft 211. This is because, when the size of the activity space is the same, the first bent portion 421 arranged away from the output shaft 211 occupies a larger space, while the first bent portion 421 arranged around the output shaft 211 occupies a smaller space. Therefore, the solution in which the first bent portion 421 surrounds the output shaft 211 can save the internal space of the housing 1. On the one hand, it makes it difficult for the first bent portion 421 to collide with the surrounding components, optimizing the internal space components. On the other hand, it also contributes to the miniaturization design of the handle 100 of the oral cleaning device.

[0063] refer to Figure 3 In this embodiment, when the output shaft 211 is not rotating, the first bending portion 421 surrounds the output shaft 211 for less than one circle. It can be understood that the first bending portion 421 surrounds the output shaft 211 to form an approximate C-shape. Since the first bending portion 421 surrounds the output shaft 211 for less than one circle, its circumference is relatively short. Therefore, when it is surrounded, its adjustable range is also relatively small, which in turn creates very high installation requirements for the circuit connector 42. Specifically, the design of this embodiment requires that the sensor body 41 and the reinforcement portion 422 should be located together on the first axis, and the two should be aligned; however, during the production and installation process, there are certain tolerances in the installation of each component, so it is difficult to align the sensor body 41 with the reinforcement portion 422; once misaligned, the stress on the circuit connector 42 is more likely to be concentrated under high-frequency vibration, and there is a risk of easy tearing.

[0064] To solve the above problems, refer to Figure 7 and Figure 8 In the unfolded state, the first bent portion 421 is configured as a wave shape, and in the process of the output shaft 211 outputting the swing power, the first bent portion 421 is configured to be compressed and stretched reciprocatingly. Figure 8 As shown, the first bending portion 421 is in the horizontal direction (reference Figure 8 The length M in the direction of the view (in the direction of the view) is the circumference of the first bend 421 when it is wrapped around. The waveform design allows the first bend 421 to extend its actual length while keeping the circumference unchanged, thereby increasing the adjustable range during installation, making it easier to align the sensor body 41 with the reinforcement part 422, and reducing the difficulty and requirements of assembly. In addition, the waveform design also allows the first bend 421 to have a certain elastic force in the extension direction. In the process of moving with the output shaft 211, the C-shaped design formed by the first bend 421 disperses the pulling force of the output shaft 211 when it rotates, while the waveform design buffers the pulling force of its lateral vibration, thereby ensuring that the stress is released more evenly under high-frequency movement, and ensuring the life of the sensor component 4 and the normal signal.

[0065] It should be noted that the first bending portion 421 of the present disclosure can be configured as a waveform in its entirety or in part. For example, only the middle portion of the first bending portion 421 can be configured as a waveform, and both ends can be straight lines. The waveform of the first bending portion 421 can be configured continuously or at intervals, or the first bending portion 421 can be formed by splicing multiple sections of different waveforms, and the present disclosure does not specifically limit this.

[0066] Furthermore, in the unfolded state, the peak and trough curvatures of the waveform can be designed to be larger, thereby increasing the number of inflection points (bending times) as much as possible within the same circumference, thereby improving the resilience of the first bending portion 421, thereby enabling the first bending portion 421 to rebound more quickly after deformation, thereby improving the anti-bending effect. However, the peak and trough curvatures of the waveform should not be set too large, otherwise the first bending portion 421 will have a nearly acute angle bend, causing the first bending portion 421 to easily break at the inflection point.

[0067] In a preferred embodiment of the present disclosure, the first bent portion 421 surrounds the output shaft 211 by more than or equal to half a circle and less than a circle. Furthermore, the circumference of the first bent portion 421 ranges from 19 to 23 mm, wherein: Figure 8 The length M marked in is the circumference of the first bend 421. The circumference of the first bend 421 should not be too long, otherwise the surrounding dimensions of the approximately C-shaped structure formed by it will be too large, that is, the space occupied by the C-shaped structure will be too large, and the output shaft 211 is prone to interference and collision with surrounding structural parts during the sweep vibration, which will not only easily affect the life of the circuit connector 42 itself, but also generate noise. The circumference of the first bend 421 should not be too short, otherwise the surrounding dimensions of the approximately C-shaped structure formed by it will be too small, and the output shaft 211 will be unable to release the stress during the sweep vibration, resulting in the concentration of stress points and thus the breakage of the line, resulting in communication abnormalities. Preferably, in the solution of using a drive motor 21 with a diameter size of 18 mm, based on the internal space design of the housing 1, the circumference of the first bend 421 can be 21 mm.

[0068] In one embodiment of the present disclosure, reference Fig.15 The first bending portion 421 includes: a first connecting segment 4211 connected to the sensor body 41, a second connecting segment 4212 connected to the reinforcing portion 422, and a third connecting segment 4213 between the first connecting segment 4211 and the second connecting segment 4212. Fig.15 As shown, in an ideal state, in a top view facing the end of the output shaft 211, the first connecting section 4211 and the second connecting section 4212 can be substantially parallel to each other and to the upper and lower sides of the output shaft 211 (refer to Fig.15The third connecting segment 4213 is bent and connected between the first connecting segment 4211 and the second connecting segment 4212 to form a shape similar to a semicircle.

[0069] However, in actual application scenarios, since the first bending portion 421 has overall soft characteristics, the first connecting segment 4211 and the second connecting segment 4212 will basically not remain straight, but will also bend to a certain extent. In one embodiment, the curvature of the third connecting segment 4213 can be significantly greater than that of the first connecting segment 4211 and the second connecting segment 4212, and the first connecting segment 4211, the second connecting segment 4212 and the third connecting segment 4213 can be divided based on the position of the sudden change of curvature on the first bending portion 421. In another embodiment, the bending curvature of the first connecting segment 4211 and the second connecting segment 4212 can also be almost the same as that of the third connecting segment 4213. Under this setting, the three can be divided based on their positions, that is, the third connecting segment 4213 is located on the shell side of the drive assembly 2 (reference Fig.15 The first connecting section 4211 and the second connecting section 4212 are portions that have not yet been bent to the side of the shell of the driving assembly 2.

[0070] In the unfolded state, the first connecting segment 4211, the second connecting segment 4212 and the third connecting segment 4213 can be constructed as waveforms with the same shape, thereby jointly forming the first bending portion 421 with a continuous and complete waveform. The first connecting segment 4211, the second connecting segment 4212 and the third connecting segment 4213 can also be constructed as waveforms with inconsistent shapes, for example: more inflection points can be set in the third connecting segment 4213 with the largest degree of deformation, while fewer inflection points can be set in the first connecting segment 4211 and the second connecting segment 4212. The first connecting segment 4211, the second connecting segment 4212 and the third connecting segment 4213 can also be constructed into different unfolded shapes, where only one or two of the three segments are constructed as waveforms, and the remaining segments can be constructed into other shapes, such as a straight line, an arc, etc.

[0071] Specifically, Fig.15 As shown, the ratio of the length of the third connecting section 4213 to the diameter of the drive motor 21 is in the range of 0.78-0.8, and / or the ratio of the length of the first connecting section 4211 to the diameter of the drive motor 21 is in the range of 0-0.27, and / or the ratio of the length of the second connecting section 4212 to the diameter of the drive motor 21 is in the range of 0.16-0.44. The diameter of the drive motor 21 is in the range of 10-30 mm. Usually in the field of electric toothbrushes, the commonly used diameters of the drive motor 21 include 10 mm, 18 mm and 30 mm. It should be noted that Fig.15 The X marked in 1 , X 2 and X 3They respectively represent: the length of the first connecting segment 4211 , the length of the second connecting segment 4212 , and the length of the third connecting segment 4213 .

[0072] For example, when the diameter of the driving motor 21 is 10 mm, the length X of the third connecting section 4213 is 3 The length X of the first connecting section 4211 may be about 7.9 mm. 1 The range is 0-2.66 mm, and the length X of the second connecting section 4212 2 In the case where the diameter of the drive motor 21 is 18 mm, the length X of the third connecting section 4213 is 3 The length X of the first connecting section 4211 may be approximately 14.22 mm. 1 The range is 0-4.8 mm, and the length X of the second connecting section 4212 2 In the case where the diameter of the drive motor 21 is 30 mm, the length X of the third connecting section 4213 is 3 The length X of the first connecting section 4211 may be approximately 23.69 mm. 1 The range is 0-8 mm, and the length X of the second connecting section 4212 2 The range is 4.93-12.93mm.

[0073] In a specific embodiment of the present disclosure, the length range of the third connecting segment 4213 is 14.21-23.69 mm, and / or the length range of the first connecting segment 4211 is 0-8 mm, and / or the length range of the second connecting segment 4212 is 2.9-12.93 mm.

[0074] In a specific embodiment of the present disclosure, the distance between the first connecting section 4211 and the second connecting section 4212 ranges from 9 to 15 mm. Fig.15 The X marked in 4 represents the distance between the first connecting segment 4211 and the second connecting segment 4212. Fig.15 As shown, in an ideal case where the first connecting section 4211 and the second connecting section 4212 are substantially parallel, the distance between the two is substantially equal to the sum of the radius of the drive motor 21 and the radius of the output shaft 211. However, in actual application scenarios, both of them are bent to a certain extent, so the distances at different locations are different, so the meaning of "distance" needs to be further explained and defined. Fig.15 The connection position between the first connection section 4211 and the sensor body 41 is marked as point P, and the connection position between the second connection section 4212 and the reinforcing portion 422 is marked as point Q. Two horizontal lines are drawn through point P and point Q (reference Fig.15The distance described in this embodiment is the distance X between the two parallel lines. 4 .

[0075] In one embodiment of the present disclosure, the drive assembly 2 includes a first side surface and a second side surface, wherein the sensor body 41 is mounted on the first side surface, the reinforcement portion 422 is disposed on the second side surface, and the first bending portion 421 is constructed to bend from the first side surface to the second side surface. It should be noted that the first side surface and the second side surface may be surfaces facing the same direction, or may be surfaces facing different directions. In the present embodiment, the first bending portion 421 surrounds the output shaft 211 for less than one circle, that is, when the first bending portion 421 surrounds the output shaft 211 for a non-full circle, the first side surface and the second side surface are surfaces facing different directions. For example, when the first bending portion 421 surrounds the output shaft 211 for half a circle, the first side surface and the second side surface are respectively the front and back surfaces of the drive assembly 2, that is, two opposite surfaces.

[0076] refer to Figure 2 and Figure 3 The drive assembly 2 includes a flexible sleeve 22, which is configured to at least partially wrap the drive motor 21. The flexible sleeve 22 can be made of a soft, elastic material such as silicone or rubber. Wrapping the drive motor 21 with the flexible sleeve 22 helps to buffer the vibration of the drive motor 21 when it is working. A mounting groove extending along the first axis is provided on the second side of the flexible sleeve 22, and part of the reinforcement portion 422 is configured to be located in the mounting groove. The reinforcement portion 422 is embedded in the mounting groove, thereby preventing other external structures from contacting the reinforcement portion 422.

[0077] Further, refer to Figure 4 and Figure 6 The flexible sleeve 22 includes a front sleeve 221 and a rear sleeve 222, and the front sleeve 221 and the rear sleeve 222 are respectively constructed to partially wrap the output shaft 211 and the opposite end 212 of the drive motor 21. The mounting groove includes a first groove section 2241 located on the front sleeve 221, and a second groove section 2242 located on the rear sleeve 222, and the first groove section 2241 and the second groove section 2242 are connected to each other. The first groove section 2241 and the second groove section 2242 are respectively arranged on the second side surfaces of the front sleeve 221 and the rear sleeve 222. One end of the reinforcement portion 422 away from the first bending portion 421 is constructed to be fixed to the second groove section 2242. Specifically, the reinforcement portion 422 can be adhered to the second groove section 2242 by using double-sided tape, so as to fix the reinforcement portion 422 on the drive assembly 2.

[0078] In one embodiment of the present disclosure, reference Figure 4 and Figure 7, the circuit connector 42 also includes a second bending portion 423, and the second bending portion 423 is connected to an end of the reinforcement portion 422 away from the first bending portion 421. The second bending portion 423 can be made of the same material as the first bending portion 421, and can have a hardness similar to that of the first bending portion 421. The rear end sleeve 222 is also provided with a third slot section 2243 connected to the second slot section, and the extension direction of the third slot section 2243 can be basically perpendicular to the extension direction of the second slot section 2242. The second bending portion 423 is constructed to be partially located in the third slot section 2243, and the third slot section 2243 is used to accommodate the second bending portion 423. The second bending portion 423 can be bent from the second side to the first side, so as to be communicatively connected with the control main board 5. Specifically, as Figure 7 As shown, the end of the second bent portion 423 is constructed as a connection end 4231 , and the connection end 4231 is used to be welded to the control main board 5 , so as to achieve communication connection between the sensor assembly 4 and the control main board 5 .

[0079] In one embodiment of the present disclosure, reference Figure 6 and Figure 7 , a first positioning member is provided in the first slot section 2241, and a second positioning member is provided at the position of the reinforcement part 422 corresponding to the front end sleeve 221, and the second positioning member is configured to match the first positioning member. Among them, one of the first positioning member and the second positioning member can be a positioning column 2244, and the other can be a positioning groove 4220. In this embodiment, a plurality of positioning grooves 4220 are provided on the reinforcement part 422, and a plurality of positioning columns 2244 are provided on the inner wall of the first slot section 2241. The positioning column 2244 can be a semicircular column, and the positioning groove 4220 can be configured as a semicircular groove that matches the positioning column 2244. When the reinforcement part 422 is installed in the first slot section 2241, not only can it be fixed by using double-sided tape, but also a plurality of positioning grooves 4220 can be respectively stuck on a plurality of positioning columns 2244, so as to limit the installation position.

[0080] In one embodiment of the present disclosure, reference Figure 8 The reinforcing portion 422 includes a first portion 4221 fixed in the mounting groove, and a second portion 4222 suspended relative to the mounting groove, wherein the second portion 4222 has a thickness of 0.3±0.03 mm and a length of 1.4±0.2 mm. Figure 8As shown, the shaded portion in the figure represents the area used to cover the fixing glue 424, and the fixing glue 424 only covers the first part 4221, thereby fixing the reinforcement part 422 in the installation groove. The second part 4222 does not cover the fixing glue 424, and the second part 4222 is suspended relative to the drive component 2. The second part 4222 is the part of the reinforcement part 422 that is directly connected to the first bending part 421. Therefore, when the first bending part 421 follows the output shaft 211 to vibrate at high frequency, the second part 4222 can float up and down with the vibration, thereby releasing the stress and playing a buffering role. Under the buffering effect of the second part 4222, there is basically no force further transmitted to the first part 4221, so the first part 4221 can be stably fixed in the installation groove and will not fall off under the action of external force.

[0081] In one embodiment of the present disclosure, reference Fig. 9 , a communication line is arranged on the circuit connector 42, and the communication line is configured to be routed in a manner parallel to the outer contour of the circuit connector 42. Specifically, the communication line includes a first line 431 for connecting with the sensor body 41 and arranged on the first bending portion 421 and the second portion 4222, and a second line 432 arranged on the first portion 4221. In this embodiment, the first line 431 located on the first bending portion 421 can be configured as a wave shape, so as to be parallel to the outer contour of the first bending portion 421; the first line 431 located on the second portion 4222 can be configured as a straight line, so as to be parallel to the outer contour of the second portion 4222; the second line 432 located on the first portion 4221 can be bent at the corresponding position of the positioning groove 4220 to avoid, so as to be parallel to the outer contour of the first portion 4221. In addition, a part of the second line 432 is also arranged on the second bending portion 423 to extend to the connection end 4231, so as to communicate with the control main board 5.

[0082] The present disclosure configures the communication line to be parallel to the outer contour of the circuit connector 42, so that the communication line has the same shape as the circuit connector 42. Since the circuit connector 42 achieves stress dispersion and fracture prevention through its special configuration and special winding method, the communication line having the same shape and winding method as the circuit connector 42 can also disperse the stress generated by the movement of the output shaft 211, thereby preventing the communication line from being broken.

[0083] In another embodiment of the present disclosure, the communication line may not be parallel to the outer contour of the circuit connector 42, and in this case, the communication line may be configured to run along a straight line. In this embodiment, the first line 431 located on the first curved portion 421 of the waveform may be configured to be straight, and the second line 432 located on the first portion 4221 may not be bent at the corresponding position of the positioning groove 4220 to avoid it. The communication lines are all configured to be straight, thereby reducing the difficulty and cost of processing.

[0084] In one embodiment of the present disclosure, the communication line located on the first bend portion 421 is constructed to be located on a side away from the output shaft 211. As mentioned above, the present disclosure can use rolled copper to make the communication line, and the rolled copper line is located on a side away from the output shaft 211 (i.e., the outer side), and the cured polyimide resin (PI) substrate is located on a side close to the output shaft 211 (i.e., the inner side). It can be understood that when the first bend portion 421 is wound and bent, the inner side of the curved surface is subjected to pressure and the outer side is subjected to tension. Since the rolled copper material has good ductility, it can be seen that the communication line has better tensile resistance than pressure resistance. Therefore, the present disclosure sets the communication line located on the first bend portion 421 on a side away from the output shaft 211, so as to further avoid the communication line from breaking.

[0085] In one embodiment of the present disclosure, Fig. 9 As shown, the second circuit 432 is arranged on the side opposite to the first circuit 431, and the end of the first circuit 431 away from the sensor body 41 is constructed to extend into the first part 4221 to connect with the second circuit 432. In this way, a smooth transition design is implemented at the connection position between the first circuit 431 and the second circuit 432. Specifically, the first circuit 431 and the second circuit 432 are respectively located on the second part 4222 and the first part 4221, and the end of the first circuit 431 extends into the first part 4221, so that the connection position between the two can be located in the first part 4221 of the reinforcement part 422. As mentioned above, the first part 4221 is fixed in the mounting groove and is not affected by external forces, thereby improving the connection stability of the first circuit 431 and the second circuit 432.

[0086] The present disclosure designs the communication line on the circuit connector 42 as a single-sided wiring, thereby reducing the thickness of the circuit connector 42. It is understandable that the traditional double-sided wiring design will cause the circuit connector 42 to become thicker, thus reducing flexibility, and thus causing the circuit connector 42 to be easily broken. In this embodiment, the total thickness of the circuit connector 42 is about 0.06 mm, which ensures that the circuit connector 42, especially the first bending portion 421 and the second bending portion 423, has sufficient flexibility, thereby ensuring that the circuit will not be damaged during high-frequency vibration.

[0087] Moreover, the present disclosure sets the wiring plane change position on the reinforcement part 422, and the wiring can be maintained on the same plane on the first bending part 421 and the second bending part 423, thus ensuring the wiring continuity on the first bending part 421 and the second bending part 423, and the first line 431 and the second line 432 will not break, short-circuit or other faults when bending. The single-sided wiring design on the first bending part 421 ensures the flexibility of the waveform structure design during high-frequency vibration and enhances the anti-bending ability.

[0088] In one embodiment of the present disclosure, reference Fig.10 , a corner 4330 is provided at the connection position between the first bending portion 421 and the second portion 4222. The corner 4330 in this embodiment is an acute angle, which shows that the structure here is relatively weak and relatively easy to tear. A third circuit 433 is provided at the position corresponding to the corner 4330 on the circuit connector 42. The third circuit 433 is provided on the same side as the first circuit 431 and is located on the inner side of the first circuit 431. The third circuit 433 can be the same wire as the first circuit 431 and the second circuit 432, but the third circuit 433 does not participate in signal transmission, but is only composed of a small section of wire independent of other circuits. The third circuit 433 is provided on the inner side of the first circuit 431, thereby strengthening the structure at the position of the corner 4330 and playing a role in tearing resistance.

[0089] In one embodiment of the present disclosure, the angle between the connection position of the communication line and the sensor body 41 and the first axis is 90±30°. Since the communication line is parallel to the outer contour of the circuit connector 42, the angle between the connection position of one end of the circuit connector 42 and the sensor body 41 and the first axis is 90±30°. The best outlet direction of the circuit connector 42 and its communication line is perpendicular to the first axis, so that the first bend 421 achieves the maximum deviation from the first axis. At this time, its outlet direction is the same as the swing direction of the output shaft 211. In actual applications, the angle between the outlet direction and the first axis can be between 60-120°. Within this range, the configuration formed by the first bend 421 can achieve a good anti-fracture effect.

[0090] In one embodiment of the present disclosure, reference Figure 2, the oral cleaning appliance handle 100 also includes a bracket 7 fixedly arranged inside the housing 1, and a fixing cover 8 arranged on the bracket 7. Among them, the bracket 7 is used to fix various components inside the oral cleaning appliance handle 100, and the fixing cover 8 and at least part of the bracket 7 are enclosed to form a first installation space 71 for accommodating the drive assembly 2. The fixing cover 8 can be fixed to the bracket 7 by a plurality of screws 81, and together with the bracket 7, the drive assembly 2 is fixed in the first installation space 71. The bracket 7 can also be provided with a second installation space 72 for accommodating a battery 721, and the first installation space 71 can be connected to the second installation space 72, so that the battery 721 in the second installation space 72 can supply power to the drive motor 21 in the first installation space 71.

[0091] In one embodiment of the present disclosure, reference Figure 2 , a display assembly 3 is provided on one side of the driving assembly 2 close to the fixed cover 8, referring to Figure 1 The housing 1 is provided with a display area 10, which may be a transparent part provided on the housing 1 or a hollow area. The side of the display component 3 close to the display area 10 is configured to display visual information. Specifically, the visual information may include the current vibration mode of the oral cleaning appliance, the state of the switch, the current gear position, the remaining power, and other information. The user can intuitively see the visual information, thereby assisting the user to better use the oral cleaning appliance.

[0092] like Figure 2 As shown, the fixed cover 8 is provided with an opening 80, and the opening 80 is configured to at least match the display assembly 3. The display assembly 3 is configured to transmit the displayed visual information to the display area 10 through the opening 80. In order to prevent the fixed cover 8 from blocking the display assembly 3, it is necessary to provide the opening 80 on the fixed cover 8. The opening 80 can be provided in a hollow on the fixed cover 8, and the area of ​​the opening 80 should be larger than the area where the content is displayed on the display assembly 3, so as to ensure that the user can fully obtain the visual information.

[0093] like Figure 2 As shown, a receiving groove 223 is provided on the first side of the front cover 221, and the display assembly 3 is at least partially received in the receiving groove 223, thereby improving the impact resistance of the display assembly 3. Except for the side for displaying visual information, the other sides of the display assembly 3 can be protected by the flexible cover 22. Specifically, when an impact occurs, the flexible cover 22 can provide a buffering effect for the display assembly 3, thereby extending the life of the display assembly 3.

[0094] In one embodiment of the present disclosure, Figure 2As shown, a flexible waterproof member 9 is sleeved on the output shaft 211, and the outer wall of the flexible waterproof member 9 is constructed to be at least partially pre-pressed on the inner wall of the housing 1. In the case where the oral cleaning appliance is an electric toothbrush, the brush head 200 mounted on the output shaft 211 will directly contact water, and water may flow along the brush head 200 to the output shaft 211. In order to prevent the liquid from flowing to the drive motor 21 and causing a short circuit, the present disclosure is provided with a flexible waterproof member 9 sleeved on the output shaft 211. The flexible waterproof member 9 can isolate water, thereby preventing the drive motor 21 from contacting water, and improving the safety of the oral cleaning appliance.

[0095] Embodiment 2 This embodiment also provides an oral cleaning device handle 100. The only difference between this embodiment and the first embodiment is the specific form of the circuit connector 42 of the sensor component 4 and the bending method of the circuit connector 42 relative to the output shaft 211. The installation method of the circuit connector 42 on the drive component 2, the routing method of the communication line and other various structures can be completely consistent with the first embodiment, and will not be repeated in this embodiment.

[0096] refer to Figure 12 to Figure 14 When the output shaft 211 does not rotate, the first bending portion 421 surrounds the output shaft 211 for more than one circle. Fig.12 The figure shows that the first bent portion 421 surrounds the output shaft 211 for exactly one circle. Fig.13 The figure shows that the first bending portion 421 surrounds the output shaft 211 for more than one circle.

[0097] As mentioned above, the first bending portion 421 in the first embodiment has a relatively short circumference, which creates a high installation requirement for the circuit connector 42, so the first bending portion 421 needs to be set as a waveform to solve this problem. In this embodiment, the first bending portion 421 can surround the output shaft 211 for at least one circle, that is, it has a longer circumference, and the installation difficulty is relatively low.

[0098] Based on this, in one embodiment of the present disclosure, in the unfolded state, the first bent portion 421 is constructed as a straight line. Compared with the wavy structure in the first embodiment, the straight first bent portion 421 and the straight communication line in this embodiment are easier to produce and process, and can also be formed by surrounding the output shaft 211 to form an activity space. In the process of the output shaft 211 outputting the swing power, the first bent portion 421 has enough deformation space, thereby preventing the output shaft 211 from applying excessive pulling force to the circuit connector 42, thereby preventing the circuit connector 42 from breaking.

[0099] In one embodiment of the present disclosure, Fig.14 As shown, the circumference of the first bending portion 421 ranges from 34 to 50 mm, wherein: Fig.14The length M marked in is the circumference of the first bend portion 421. The circumference of the first bend portion 421 should not be too long, otherwise the radius of the approximate annular structure formed by it will be too large, and it is easy to interfere and collide with the surrounding structural parts during the sweeping vibration of the output shaft 211, which will not only easily affect the life of the circuit connector 42 itself, but also generate noise. The circumference of the first bend portion 421 should not be too short, otherwise the radius of the approximate annular structure formed by it will be too small, and during the sweeping vibration of the output shaft 211, the first bend portion 421 cannot release the stress, resulting in the concentration of stress points and thus the breakage of the line, resulting in communication abnormalities. Preferably, in the solution of using a drive motor 21 with a diameter size of 18 mm, based on the internal space design of the housing 1, the circumference of the first bend portion 421 can be 42 mm.

[0100] In one embodiment of the present disclosure, reference Fig.12 When the first bent portion 421 surrounds the entire circumference of the output shaft 211 , the connection between the first bent portion 421 and the reinforcing portion 422 is constructed to correspond to a position suspended above the sensor body 41 . Fig.12 The first bending portion 421 is shown as a situation where it surrounds the output shaft 211 for a whole circle. The first bending portion 421 can also surround two or three circles, etc., and the present disclosure does not limit this. In the case of surrounding the whole circle, the connection between the first bending portion 421 and the reinforcing portion 422 is aligned with the sensor body 41, that is, when observing from the first side of the driving assembly 2, the connection between the first bending portion 421 and the reinforcing portion 422 can just cover the sensor body 41.

[0101] The reinforcing portion 422 extends along the first axis to be fixed to the driving assembly 2. As mentioned above, the driving assembly 2 includes a first side surface and a second side surface, wherein the sensor body 41 is installed on the first side surface and the reinforcing portion 422 is arranged on the second side surface. When the first bending portion 421 surrounds the entire circumference of the output shaft 211, the first side surface and the second side surface are surfaces facing the same direction. Fig.12 As shown, the mounting groove on the flexible sleeve 22 for mounting the first portion 4221 of the reinforcing portion 422 is located on the same surface as the sensor body 41 .

[0102] Embodiment 3 This embodiment provides an oral cleaning device, referring to Figure 1 , including an oral cleaning tool handle 100 and a brush head 200. The entire structure of the oral cleaning tool handle 100 has been described in detail in Example 1 and Example 2, and will not be repeated here. The brush head 200 is arranged at the end of the oral cleaning tool handle 100 and is configured to be connected to the output shaft 211. The brush head 200 may include a plurality of bristle clusters, which are used to contact the teeth to achieve a brushing function. The output shaft 211 of the drive motor 21 can drive the brush head 200 to swing, thereby improving the cleaning effect.

[0103] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the marketplace, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A handle for an oral cleaning device, characterized in that: include: a housing configured to be gripped; A drive assembly, disposed inside the housing; The drive assembly includes a drive motor including an output shaft extending along a first axis; The driving motor is configured to output swing power through the output shaft; A sensor assembly includes a sensor body and a circuit connector connected to the sensor body; the sensor body is configured to be arranged on the output shaft and is configured to move under the driving action of the output shaft; the circuit connector includes a first bending portion connected to the sensor body, and the first bending portion is configured to surround the output shaft less than one circle; in the unfolded state, the first bending portion is configured to be a waveform; in the process of the output shaft outputting swinging power, the first bending portion is configured to be reciprocatedly compressed and stretched.

2. The oral cleaning device handle according to claim 1, characterized in that: The first bending portion surrounds the output shaft by more than or equal to half a circle and less than one circle.

3. The handle of the oral cleaning device according to claim 1, characterized in that: The circumference of the first bending portion ranges from 19 to 23 mm.

4. The oral cleaning device handle according to claim 1, characterized in that: The circuit connector further includes a reinforcing portion connected to an end of the first bending portion away from the sensor body.

5. The oral cleaning device handle according to claim 4, characterized in that: The first bending portion includes: a first connecting segment connected to the sensor body, a second connecting segment connected to the reinforcement portion, and a third connecting segment between the first connecting segment and the second connecting segment; wherein, the ratio of the length of the third connecting segment to the diameter of the drive motor is in the range of 0.78-0.8, and / or, the ratio of the length of the first connecting segment to the diameter of the drive motor is in the range of 0-0.27, and / or, the ratio of the length of the second connecting segment to the diameter of the drive motor is in the range of 0.16-0.

44.

6. The handle of the oral cleaning device according to claim 5, characterized in that: The diameter of the driving motor is in the range of 10-30 mm.

7. The handle of the oral cleaning device according to claim 4, characterized in that: The first bending portion includes: a first connecting segment connected to the sensor body, a second connecting segment connected to the reinforcement portion, and a third connecting segment between the first connecting segment and the second connecting segment; wherein the length range of the third connecting segment is 14.21-23.69 mm, and / or the length range of the first connecting segment is 0-8 mm, and / or the length range of the second connecting segment is 2.9-12.93 mm.

8. The oral cleaning device handle according to claim 4, characterized in that: The first bending portion includes: a first connecting segment connected to the sensor body, a second connecting segment connected to the reinforcement portion, and a third connecting segment between the first connecting segment and the second connecting segment; wherein the distance between the first connecting segment and the second connecting segment ranges from 9 to 15 mm.

9. The oral cleaning device handle according to claim 4, characterized in that: The reinforcing portion of the circuit connector is disposed on the driving assembly and is configured to extend along the direction of the first axis.

10. The oral cleaning device handle according to claim 9, characterized in that: A communication line is arranged on the circuit connection member, and the communication line is configured to be routed in parallel with the outer contour of the circuit connection member, or is configured to be routed along a straight line.

11. The oral cleaning device handle according to claim 10, characterized in that: The communication line located on the first bending portion is configured to be located on a side away from the output shaft.

12. The oral cleaning device handle according to claim 10, characterized in that: The driving assembly includes a first side surface and a second side surface that are opposite to each other; the sensor body is installed on the first side surface, and the reinforcing portion is located on the second side surface; the first bending portion is configured to be bent from the first side surface to the second side surface; The drive assembly also includes a flexible sleeve, which is configured to at least partially wrap the drive motor; a mounting groove extending along the first axis direction is provided on the second side of the flexible sleeve, and part of the reinforcement portion is configured to be located in the mounting groove.

13. The oral cleaning device handle according to claim 12, characterized in that: In the direction of the first axis, the drive motor further includes an opposite end opposite to the output shaft; the flexible sleeve includes a front sleeve and a rear sleeve, and the front sleeve and the rear sleeve are respectively configured to partially wrap the output shaft and the opposite end of the drive motor; The mounting groove includes a first groove section located on the front end sleeve and a second groove section located on the rear end sleeve, the first groove section and the second groove section are connected to each other; the end of the reinforcement portion away from the first bending portion is constructed to be fixed to the second groove section.

14. The oral cleaning device handle according to claim 13, characterized in that: A first positioning member is arranged in the first groove section, and a second positioning member is arranged at a position of the reinforcement portion corresponding to the front end sleeve; the second positioning member is constructed to be compatible with the first positioning member.

15. The oral cleaning device handle according to claim 13, characterized in that: The circuit connector also includes a second bending portion, which is connected to an end of the reinforcement portion away from the first bending portion; the rear end sleeve is also provided with a third slot section connected to the second slot section; the second bending portion is constructed to be partially located in the third slot section.

16. The oral cleaning appliance handle according to claim 12, characterized in that: The reinforcing portion includes a first portion fixed in the mounting groove, and a second portion suspended relative to the mounting groove; the second portion has a thickness of 0.3±0.03 mm and a length of 1.4±0.2 mm.

17. The oral cleaning appliance handle according to claim 16, characterized in that: The communication circuit includes a first circuit for connecting to the sensor body and arranged on the first bending portion and the second portion, and a second circuit arranged on the first portion; the second circuit is arranged on a side opposite to the first circuit; an end of the first circuit away from the sensor body is constructed to extend into the first portion to connect to the second circuit.

18. The oral cleaning appliance handle according to claim 17, characterized in that: A corner is arranged at the connection position between the first bending portion and the second portion; a third circuit is arranged on the circuit connector at a position corresponding to the corner, and the third circuit is arranged on the same side as the first circuit and is located inside the first circuit.

19. The oral cleaning device handle according to claim 10, characterized in that: The angle between the connection position between the communication line and the sensor body and the first axis is 90±30°.

20. The oral cleaning appliance handle according to claim 10, characterized in that: The communication line is made of rolled copper material, and the hardness of the reinforcement portion is greater than the hardness of the first bending portion.

21. The oral cleaning appliance handle according to claim 4, characterized in that: A reinforcement structure is provided at a connection position between the reinforcement portion and the first bending portion.

22. The oral cleaning appliance handle according to claim 1, characterized in that: In the extending direction of the first axis, the distance between the side of the first bending portion close to the end of the output shaft and the end of the output shaft is in the range of 31.07-32.05 mm.

23. The oral cleaning appliance handle according to claim 1, characterized in that: It also includes a control main board; the control main board is constructed to be located in the housing and is constructed to be communicatively connected with the circuit connector; the control main board is configured to determine the pressure value received by the output shaft based on the electrical signal output by the sensor body; when the pressure value is greater than a threshold value, the control main board is configured to send a prompt signal.

24. An oral cleaning device, characterized in that: include: The oral cleaning appliance handle according to any one of claims 1 to 23; A brush head is arranged at the end of the handle of the oral cleaning tool and is configured to be connected to the output shaft.

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