Oral cavity cleaning appliance handle and oral cavity cleaning appliance

Abstract

The utility model 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 shell is configured to be suitable for being held; 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 surrounds the output shaft by more than or equal to one circle; in the unfolded state, the first bent portion is configured to be linear. 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] This disclosure relates to the field of oral hygiene technology, specifically to a handle for an oral hygiene appliance; this disclosure also relates to an oral hygiene appliance. Background Technology

[0002] As living standards improve, people are becoming more aware of oral care, and the variety of oral cleaning tools on the market is increasing. Taking electric toothbrushes as an example, the drive motor in the handle can drive the toothbrush head to swing or vibrate. When brushing their teeth, users hold the handle and press the toothbrush head onto their teeth to clean them.

[0003] In existing technology, a sensor for detecting the user's brushing force can be installed on the output shaft of the drive motor. This sensor can alert the user when the brushing force is too strong, thus protecting the user's dental health. The sensor is typically connected to the control board via a circuit connector. However, during operation, the output shaft moves the sensor, which in turn pulls on the circuit connector. Furthermore, with technological advancements, the rotation angle of the output shaft is increasing, leading to greater pulling forces on the circuit connector. This makes the circuit connector prone to breakage and reduces its lifespan. Additionally, the reverse force pulling on the sensor can reduce the accuracy of brushing force detection. Utility Model Content

[0004] This disclosure aims to address the problems existing in the prior art by providing a handle for an oral hygiene appliance and an oral hygiene appliance.

[0005] According to a first aspect of this disclosure, a handle for an oral hygiene appliance is provided, comprising:

[0006] A housing configured to be gripped;

[0007] A drive assembly is disposed inside the housing; the drive assembly includes a drive motor, the drive motor including an output shaft extending along a first axis; the drive motor is configured to output oscillating power through the output shaft;

[0008] A sensor assembly includes a sensor body and a circuit connector connected to the sensor body; the sensor body is configured to be disposed on the output shaft and to move under the drive of the output shaft; the circuit connector includes a first bend connected to the sensor body, the first bend being configured to surround the output shaft at least once; in the unfolded state, the first bend is configured to be straight.

[0009] In one embodiment of this disclosure, the circumference of the first bend ranges from 34 to 50 mm.

[0010] In one embodiment of this disclosure, the circuit connector further includes a reinforcing portion connected to the end of the first bend away from the sensor body.

[0011] In one embodiment of this disclosure, when the first bend surrounds the entire circumference of the output shaft, the connection between the first bend and the reinforcement is configured to be suspended at a position corresponding to the sensor body.

[0012] In one embodiment of this disclosure, the reinforcing portion is disposed on the drive assembly and is configured to extend along a first axis.

[0013] In one embodiment of this disclosure, the circuit connector is provided with a communication line, which is configured to run parallel to the outer contour of the circuit connector or to run along a straight line.

[0014] In one embodiment of this disclosure, the communication line located on the first bend is configured to be located on the side away from the output shaft.

[0015] In one embodiment of this disclosure, the driving component includes a first side and a second side, wherein the sensor body is mounted on the first side, the reinforcing portion is disposed on the second side, and the first bending portion is configured to bend from the first side to the second side.

[0016] The drive assembly includes a flexible sleeve configured to at least partially enclose the drive motor; a mounting groove extending along the first axis is provided on a second side of the flexible sleeve, and a portion of the reinforcement is configured to be located within the mounting groove.

[0017] In one embodiment of this disclosure, when the first bend does not circumferentially surround the output shaft, the first side and the second side are surfaces facing different directions; when the first bend circumferentially surrounds the output shaft, the first side and the second side are surfaces facing the same direction.

[0018] In one embodiment of this disclosure, in the first axial direction, the drive motor further includes a counter end opposite to the output shaft; the flexible sleeve includes a front sleeve and a rear sleeve, the front sleeve and the rear sleeve being respectively configured to partially wrap around the output shaft and the counter end of the drive motor;

[0019] The mounting groove includes a first groove segment located on the front end sleeve and a second groove segment located on the rear end sleeve, the first groove segment and the second groove segment being interconnected; the end of the reinforcing part away from the first bending part is configured to be fixed to the second groove segment.

[0020] In one embodiment of this disclosure, a first positioning member is provided in the first groove segment, and a second positioning member is provided in the reinforcing part corresponding to the position of the front end sleeve; the second positioning member is configured to be adapted to the first positioning member.

[0021] In one embodiment of this disclosure, the circuit connector further includes a second bend, which is connected to the end of the reinforcing portion away from the first bend; the rear end sleeve is also provided with a third groove segment communicating with the second groove segment; the second bend is configured to be partially located within the third groove segment.

[0022] In one embodiment of this disclosure, the reinforcing portion includes a first portion fixed within the mounting groove and a second portion suspended relative to the mounting groove; the second portion has a thickness of 0.3±0.03mm and a length of 1.4±0.2mm.

[0023] In one embodiment of this disclosure, the communication line includes a first line for connecting to the sensor body and disposed on the first bend and the second portion, and a second line disposed on the first portion; the second line is disposed on the side opposite to the first line; one end of the first line away from the sensor body is configured to extend into the first portion to connect with the second line.

[0024] In one embodiment of this disclosure, a corner is provided at the connection position between the first bend and the second part; a third line is provided on the circuit connector at the position corresponding to the corner, the third line is located on the same side as the first line and is located inside the first line.

[0025] In one embodiment of this disclosure, the angle between the connection position of the communication line and the sensor body and the first axis is 90±30°.

[0026] In one embodiment of this disclosure, the communication line is made of rolled copper material, and the hardness of the reinforcing portion is greater than the hardness of the first bending portion.

[0027] In one embodiment of this disclosure, a reinforcing structure is provided at the connection position between the reinforcing portion and the first bent portion.

[0028] In one embodiment of this disclosure, in the direction of extension of the first axis, the distance between the side of the first bent portion near the end of the output shaft and the end of the output shaft ranges from 31.07 to 32.05 mm.

[0029] In one embodiment of this disclosure, a control motherboard is further included; the control motherboard is configured to be located within the housing and to be communicatively connected to the circuit connector; the control motherboard is configured to determine the pressure value applied to the output shaft based on the electrical signal output by the sensor body; and when the pressure value is greater than a threshold, the control motherboard is configured to issue a warning signal.

[0030] According to a second aspect of this disclosure, an oral hygiene appliance is also provided, comprising:

[0031] The oral hygiene appliance handle described in the first aspect of this disclosure;

[0032] A brush head is disposed at the end of the handle of the oral hygiene appliance and is configured to be connected to the output shaft.

[0033] One beneficial effect of this 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 output of oscillating power. Specifically, the first bend surrounds the output shaft at least once, and the first bend basically does not contact the output shaft during operation, and has a sufficiently large deformation space, thereby relieving the stress on the output shaft during operation and avoiding excessive pulling force on the circuit connector. This disclosure makes the circuit connector less prone to breakage and extends its lifespan, while also ensuring the measurement accuracy of the sensor body, thereby improving the accuracy of brushing force detection and helping to protect the user's dental health.

[0034] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0036] Figure 1 This is a schematic diagram of the structure of an oral cleaning appliance according to an embodiment of the present disclosure;

[0037] Figure 2 This is an exploded view of the handle of an oral cleaning appliance according to one embodiment of the present disclosure;

[0038] Figure 3 This is a schematic diagram of the structure of the driving component and sensor component in one embodiment of the present disclosure;

[0039] Figure 4 This is an exploded view of the drive assembly and sensor assembly in one embodiment of this disclosure;

[0040] Figure 5This is a schematic diagram of the structure of the drive motor in one embodiment of the present disclosure;

[0041] Figure 6 This is a schematic diagram of the front sleeve structure in one embodiment of this disclosure;

[0042] Figure 7 This is a schematic diagram of the sensor assembly in one embodiment of the present disclosure;

[0043] Figure 8 This is a schematic diagram of the sensor assembly from another angle in one embodiment of the present disclosure;

[0044] Figure 9 This is a diagram showing the communication line routing on both sides of the circuit connector in one embodiment of this disclosure;

[0045] Figure 10 yes Figure 9 A magnified view of a section at point A in the middle;

[0046] Figure 11 This is a schematic diagram of the structure of the drive component and sensor component in another embodiment of the present disclosure;

[0047] Figure 12 This is a schematic diagram of the structure of the drive component and sensor component in another embodiment of the present disclosure;

[0048] Figure 13 This is a schematic diagram of the structure of the drive component and sensor component in another embodiment of the present disclosure;

[0049] Figure 14 This is a schematic diagram of the sensor assembly in another embodiment of this disclosure;

[0050] Figure 15 This is a top view of the drive assembly and sensor assembly in one embodiment of the present disclosure.

[0051] Figures 1 to 15 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows:

[0052] 100. Handle of an oral hygiene appliance; 1. Housing; 10. Display area; 2. Drive assembly; 21. Drive motor; 211. Output shaft; 212. Opposite end; 213. Groove; 22. Flexible sleeve; 221. Front sleeve; 222. Rear sleeve; 223. Receiving groove; 2241. First groove segment; 2242. Second groove segment; 2243. Third groove segment; 2244. Positioning post; 3. Display assembly; 4. Sensor assembly; 41. Sensor body; 42. Circuit connector; 421. First bend; 4211. First connecting segment; 4212. Second connecting segment ; 4213, Third connecting section; 422, Reinforcing part; 4220, Positioning groove; 4221, First part; 4222, Second part; 423, Second bending part; 4231, Connecting end; 424, Fixing adhesive; 431, First circuit; 432, Second circuit; 433, Third circuit; 4330, Corner; 5, Control main board; 61, Light guide; 62, Lamp ring; 7, Bracket; 71, First mounting space; 72, Second mounting space; 721, Battery; 8, Fixing cover; 80, Opening; 81, Screw; 9, Flexible waterproof part; 200, Brush head. Detailed Implementation

[0053] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0054] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0055] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0056] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0057] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0058] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0059] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0060] Example 1

[0061] This embodiment provides a handle 100 for an oral hygiene appliance, which can be used in oral hygiene appliances such as electric toothbrushes and rinsing / flushing devices. (See reference) Figures 1 to 3 The oral hygiene appliance handle 100 includes: a housing 1, a drive assembly 2, and a sensor assembly 4. The housing 1 is configured to be gripped, allowing a user to operate the oral hygiene appliance by holding the housing 1. The housing 1 may have an inner cavity for accommodating various components of the oral hygiene appliance handle 100.

[0062] Drive component 2 is located inside housing 1, see reference. Figure 2 The drive assembly 2 includes a drive motor 21, which includes an output shaft 211 extending along a first axis. The drive motor 21 is configured to output oscillating power through the output shaft 211. The output shaft 211 can be used to connect to the brush head 200 of the oral cleaning device, thereby enabling the drive motor 21 to drive the brush head 200 to oscillate, thus providing a good cleaning effect for the oral cleaning device. Specifically, the drive motor 21 can be a sonic motor, whose output shaft 211 can reciprocate forward and reverse by a predetermined angle around the first axis, thereby outputting oscillating power to drive the brush head 200 to vibrate. This allows the user to easily clean toothbrush residue without swinging their wrist while brushing, ensuring a clean cleaning effect.

[0063] refer to Figure 3 and Figure 4 The sensor assembly 4 includes a sensor body 41 and a circuit connector 42. The sensor body 41 is configured to be mounted on the output shaft 211 and to move under the drive of the output shaft 211. Specifically, as... Figure 5 As shown, a slot 213 is provided on the output shaft 211, and the sensor body 41 can be fixed in the slot 213. One end of the circuit connector 42 is connected to the sensor body 41. The sensor body 41, located on the output shaft 211, can detect the force on 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 realizing real-time monitoring of the force on the output shaft 211. Users 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 periodontium.

[0064] In one embodiment of this disclosure, reference is made to Figure 2The oral hygiene appliance handle 100 also includes a control board 5, which is configured to be located within the housing 1 and to communicate with a circuit connector 42, which can be soldered onto the control board 5. The control board 5 can be fixed to a bracket 7 and connected to various components in the oral hygiene appliance handle 100 to control the coordinated operation of these components. For example, see reference... Figure 3 In the first axial direction, the drive motor 21 also includes a counterpart end 212 opposite to the output shaft 211. The control motherboard 5 can be soldered to the control lines located at the counterpart end 212 of the drive motor 21 to control the drive motor 21 to turn on or off. The control motherboard 5 is configured to determine the pressure value of the output shaft 211 based on the electrical signal output by the sensor body 41. When the pressure value is greater than a threshold, the control motherboard 5 is configured to issue a warning signal.

[0065] Specifically, the oral hygiene appliance handle 100 also includes a light-emitting component, which is configured to be partially exposed on the outside of the housing 1 and is configured to communicate with the control motherboard 5. (Reference) Figure 2 The light-emitting component may include a light guide 61 and a lamp ring 62, see reference. Figure 1 The light guide 61 is partially exposed on the outer side of the housing 1, and the lamp ring 62 is disposed on the inner side of the light guide 61. It is fixed to the bracket 7 and soldered to the control motherboard 5. The control motherboard 5 can control the lamp ring 62 to turn on or off. When the lamp ring 62 is on, the user can observe the light signal by looking at the light guide 61. When the pressure value exceeds a threshold, the control motherboard 5 is configured to control the light-emitting component to output a light signal. It is understood that when the pressure value exceeds the threshold, it means that the user's brushing force is too strong. To remind the user to reduce the brushing force, the control motherboard 5 can control the lamp ring 62 to turn on, allowing the user to notice the light signal emitted by the light guide 61 and thus adjust the brushing force, which is beneficial for protecting dental health.

[0066] With technological advancements, the rotation angle of the output shaft 211 of the drive assembly 2 has become increasingly larger in order to improve the sweeping amplitude. Between product iterations, the rotation angle of the output shaft 211 has increased from the previously standard 5° swing limit to 30°, and can even be further upgraded to 60° or greater. The sensor body 41 mounted on the output shaft 211 rotates at a large angle along with the output shaft 211. This results in increasingly greater tensile forces on the circuit connector 42, making it prone to breakage and reducing the accuracy of brushing force detection.

[0067] To solve the above technical problems, refer to Figure 3The end of the circuit connector 42 not connected to the sensor body 41 is configured to be bent in a direction deviating from the first axis and connected to the drive assembly 2. During the output of the oscillating force by the output shaft 211, there is always a space of movement between the circuit connector 42 and the output shaft 211. This disclosure ensures that by bending the circuit connector 42 in a direction deviating from the first axis, there is always a space of movement between the circuit connector 42 and the output shaft 211 during the output of the oscillating force. This space of movement provides room for the circuit connector 42 to deform during the operation of the output shaft 211, thus preventing the circuit connector 42 from being directly pulled by the output shaft 211. This design eliminates stress during the operation of the output shaft 211 and avoids excessive pulling force on the circuit connector 42. This disclosure makes the circuit connector 42 less prone to breakage and increases its lifespan, while also ensuring the measurement accuracy of the sensor body 41, thereby improving the accuracy of brushing force detection and helping to protect the user's dental health.

[0068] 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 with the reinforcing portion 422. The reinforcing portion 422 is disposed on the drive assembly 2 and is configured to extend along the direction of the first axis. It is understood that the first bending portion 421 is a structure for bending and can be made of a flexible material with a certain degree of toughness.

[0069] In one specific embodiment of this disclosure, the communication lines in the circuit connector 42 are made of rolled copper material. This material has higher ductility than electrolytic copper, making it less prone to breakage and exhibiting good bending resistance, making it more suitable for high-frequency bending applications. The substrate portion of the circuit connector 42 can be made of polyimide resin (PI) material. Specifically, this disclosure uses a glue-free rolling process to form copper foil from rolled copper. The copper foil is very thin, so it needs to be coated with liquid polyimide resin (PI) and then cured, thereby strengthening and thickening the circuit connector 42, increasing its strength and making it less prone to breakage. In addition, it also provides insulation protection for the circuit connector 42.

[0070] The circuit connector 42, made of rolled copper and polyimide resin (PI), is flexible and can therefore meet the deformation requirements of the first bending portion 421. The reinforcing portion 422, however, requires a plate with a certain degree of rigidity to provide support. The plate used in the reinforcing portion 422 can also possess a certain degree of elasticity, allowing it to vibrate slightly along with the drive motor 21 during operation, thus mitigating stress to some extent.

[0071] One end of the first bending part 421 is directly connected to the sensor body 41. As the sensor body 41 moves with the output shaft 211, the first bending part 421 will deform under the pulling action of the sensor body 41, thereby releasing the stress in the sweeping process of the output shaft 211.

[0072] The reinforcing part 422 is configured to be spaced apart from the output shaft 211. On a horizontal plane perpendicular to the first axis, the two ends of the first bent part 421 are relatively flush to form a space for movement. Ideally, both ends of the first bent part 421 can be located on a horizontal plane perpendicular to the first axis, thus forming a bent structure with both ends flush. However, in actual production and installation, due to assembly errors, the two ends of the first bent part 421 may not be completely flush on the horizontal plane. When it is within the allowable error range, the two ends of the first bent part 421 can be considered relatively flush. Since the housing of the drive assembly 2 has a certain thickness and the reinforcing part 422 has sufficient rigidity for support, even if part of the reinforcing part 422 is not directly installed on the drive assembly 2, it can still maintain a certain distance from the output shaft 211.

[0073] The first bending portion 421, with one end connected to the sensor body 41, is located near the output shaft 211, while the end connected to the reinforcing portion 422 is relatively farther from the output shaft 211 and closer to the drive assembly 2. The distances between the first bending portion 421 and the reinforcing portion 422 and the output shaft 211 are different, but both are essentially 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 essentially located on a horizontal plane perpendicular to the first axis. Thus, throughout the entire bending path, there is always room for movement between the first bending portion 421 and the output shaft 211, providing space for deformation of the first bending portion 421. This structure also ensures that the reinforcing portion 422 does not come into contact with the output shaft 211.

[0074] In one embodiment of this disclosure, in the direction of extension of the first axis, the distance between the side of the first bend 421 near the end of the output shaft 211 and the end of the output shaft 211 ranges from 31.07 to 32.05 mm. Neither the first bend 421 nor the sensor body 41 should be installed too close to the end of the output shaft 211. It is understood 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. Neither the first bend 421 nor the sensor body 41 should be installed too far from the end of the output shaft 211, as this would result in them being too close to the drive motor 21 side, making them prone to collisions and interference with other components.

[0075] Furthermore, the first bend 421 has a certain width. When installed, one side of it will inevitably be closer to the end of the output shaft 211. For this side, the distance between it and the end of the output shaft 211 in the direction of the first axis extension remains basically flush. It can be seen that the first bend 421 will not undergo significant twisting or stretching in the direction of the first axis. However, due to assembly errors and the deformation of the first bend 421 during its movement with the output shaft 211, the distance between its side and the end of the output shaft 211 cannot be fixed within a certain range, but will vary within a small range.

[0076] The reinforcing part 422 is connected to the end of the first bend 421 furthest from the sensor body 41. Since most of the force generated by the sweeping vibration of the output shaft 211 is dissipated by the first bend 421, relatively little force can be transmitted to the reinforcing part 422 through the first bend 421. The reinforcing part 422 is mainly used to fix the circuit connector 42 as a whole to the drive assembly 2, thereby preventing the circuit connector 42 from swinging and colliding with surrounding components during the sweeping vibration process. (Reference) Figures 2 to 4 The reinforcing part 422 extends along the first axis, thereby allowing the circuit connector 42 to extend from the output shaft 211 to the opposite end 212, so as to facilitate communication with the control motherboard 5 located in the direction of the opposite end 212.

[0077] In one embodiment of this disclosure, the hardness of the reinforcing portion 422 is greater than that of the first bending portion 421. The first bending portion 421 needs to be bent and should be easily deformable to buffer the stress during vibration sweeping, thus its hardness is relatively low. The reinforcing portion 422, on the other hand, is a fixed structure and does not require bending, always extending along the first axis; therefore, its hardness is relatively high 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, allowing the first bending portion 421 to maintain a distance from the output shaft 211.

[0078] In one embodiment of this disclosure, a reinforcing structure is provided at the connection position between the reinforcing part 422 and the first bending part 421. For example, UV adhesive can be used to connect and fix the first bending part 421 and the reinforcing part 422 at the connection position, thereby enhancing the strength of the soft and hard connection position and preventing the connection position between the first bending part 421 and the reinforcing part 422 from breaking during the high-frequency sweep vibration of the output shaft 211.

[0079] In one embodiment of this disclosure, reference is made to Figure 3 and Figure 11The first bend 421 is configured to bend around or away from the output shaft 211. During forward rotation of the output shaft 211, the degree of bending of the first bend 421 increases, and the space for movement decreases; during reverse rotation of the output shaft 211, the degree of bending of the first bend 421 decreases, and the space for movement increases. This decrease and increase in space for movement can be understood not only as a change in volume, but also as a change in the space within which the first bend 421 can further deform: when the space for movement decreases, the first bend 421 is compressed and tightened, thus reducing the space for further deformation; when the space for movement increases, the first bend 421 becomes relatively relaxed, thus increasing the space for further deformation. It is understandable that the output shaft 211 will rotate back and forth during operation, and the space for movement will increase and decrease accordingly. However, no matter how the first bending part 421 deforms, there is always a space for movement between the first bending part 421 and the output shaft 211, and it is not easy to be pulled. The stress caused by high-frequency large-amplitude vibration can be distributed during the deformation of the first bending part 421, so that the stress is not concentrated at one point, thereby preventing the circuit connector 42 from breaking.

[0080] Specifically, when the first bending portion 421 is arranged around the output shaft 211, it is defined that the first bending portion 421, from the end connected to the sensor body 41 to the end connected to the reinforcement portion 422, winds around the output shaft 211 in a clockwise direction. In this case, the output shaft 211 rotates counterclockwise when it rotates forward and clockwise when it rotates backward. When the output shaft 211 rotates forward, the first bending portion 421 deforms towards the output shaft 211 under the action of the sensor body 41, i.e., it winds around the output shaft 211 more tightly, thereby increasing the degree of bending of the first bending portion 421 and reducing the space for movement. When the output shaft 211 rotates backward, the first bending portion 421 deforms away from the output shaft 211 under the action of the sensor body 41, i.e., it winds around the output shaft 211 more loosely, thereby reducing the degree of bending of the first bending portion 421 and increasing the space for movement.

[0081] When the first bend 421 is positioned away from the output shaft 211, refer to Figure 11 The first bent portion 421 extends at one end connected to the sensor body 41 in a direction deviating from the first axis and bends away from the output shaft 211. When the output shaft 211 rotates clockwise, the first bent portion 421 deforms towards the output shaft 211 under the action of the sensor body 41, that is, the degree of bending of the first bent portion 421 increases, and the space for movement decreases; when the output shaft 211 rotates counterclockwise, the first bent portion 421 deforms away from the output shaft 211 under the action of the sensor body 41, that is, the degree of bending of the first bent portion 421 decreases, and the space for movement increases.

[0082] It should be noted that this disclosure preferably adopts a scheme in which the first bending portion 421 surrounds the output shaft 211. This is because, with the same amount of available space, the first bending portion 421 positioned away from the output shaft 211 occupies more space, while the first bending portion 421 positioned around the output shaft 211 occupies less space. Therefore, choosing the scheme in which the first bending portion 421 surrounds the output shaft 211 can save internal space in the housing 1. On the one hand, it makes the first bending portion 421 less likely to collide with surrounding components, optimizing the internal space components. On the other hand, it also contributes to the miniaturization design of the oral cleaning appliance handle 100.

[0083] refer to Figure 3 In this embodiment, when the output shaft 211 is not rotating, the first bend 421 surrounds the output shaft 211 less than once, which can be understood as the first bend 421 forming an approximate C-shape around the output shaft 211. Because the first bend 421 surrounds the output shaft 211 less than once, its circumference is relatively short, thus its adjustable range is relatively small during the surrounding process, which places high installation requirements on the circuit connector 42. Specifically, the design of this embodiment requires that the sensor body 41 and the reinforcing part 422 be located on the same first axis and aligned; however, during production and installation, there are certain tolerances in the installation of each component, making it difficult to align the sensor body 41 and the reinforcing part 422. If they are not aligned, the stress on the circuit connector 42 under high-frequency vibration is more likely to concentrate, posing a risk of breakage.

[0084] To solve the above problems, refer to Figure 7 and Figure 8 In the unfolded state, the first bent portion 421 is constructed as a wave shape. During the process of the output shaft 211 outputting oscillating power, the first bent portion 421 is constructed to reciprocate through compression and stretching. Figure 8 As shown, the first bend 421 is in the horizontal direction (reference) Figure 8 The length M in the view direction 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 and making it easier to align the sensor body 41 with the reinforcing part 422, reducing assembly difficulty and requirements. Moreover, the waveform design also gives the first bend 421 a certain elasticity in the extension direction. During the movement with the output shaft 211, the C-shaped design formed by the first bend 421 dissipates the pulling force of the output shaft 211 rotation, while the waveform design buffers the pulling force of its lateral vibration, thereby ensuring more uniform stress release under high-frequency movement, ensuring the life of the sensor assembly 4 and normal signal.

[0085] It should be noted that the first bending portion 421 of this disclosure can be entirely constructed as a waveform, or it can be partially constructed as a waveform. For example, only the middle part of the first bending portion 421 can be set as a waveform, while the two ends can be straight lines. The waveform of the first bending portion 421 can be continuously set, or it can be set at intervals, or it can be formed by splicing together multiple different waveforms. This disclosure does not make specific limitations in this regard.

[0086] Furthermore, in the unfolded state, the peak and trough curvature of the waveform can be designed to be relatively large, thereby increasing the number of inflection points (bending times) within the same circumference. This improves the resilience of the first bending portion 421, allowing it to recover more quickly after deformation and enhancing its bending resistance. However, the peak and trough curvature of the waveform should not be set too large, otherwise the first bending portion 421 will have near-acute bends, making it prone to breakage at the inflection points.

[0087] In a preferred embodiment of this disclosure, the first bend 421 surrounds the output shaft 211 at a distance greater than or equal to half a circumference and less than a full circumference. Further, the circumference of the first bend 421 ranges from 19 to 23 mm. Figure 8 The length M marked in the figure represents the perimeter of the first bend 421. The perimeter of the first bend 421 should not be too long; otherwise, the encircling size of the approximately C-shaped structure will be too large, meaning the space occupied by the C-shaped structure will be too large. During the sweeping vibration of the output shaft 211, it is prone to interference and collision with surrounding structural components, which not only easily affects the lifespan of the circuit connector 42 itself but also generates noise. Conversely, the perimeter of the first bend 421 should not be too short; otherwise, the encircling size of the approximately C-shaped structure will be too small. During the sweeping vibration of the output shaft 211, the first bend 421 cannot release stress, leading to stress concentration and potential line breakage, resulting in communication abnormalities. Preferably, in the scheme using a drive motor 21 with a diameter of 18mm, based on the internal space design of the housing 1, the perimeter of the first bend 421 can be 21mm.

[0088] In one embodiment of this disclosure, reference is made to Figure 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. Figure 15 As shown, under ideal conditions, in a top-down view facing the end of the output shaft 211, the first connecting segment 4211 and the second connecting segment 4212 can be basically parallel to each other on the top and bottom sides of the output shaft 211 (reference). Figure 15(View direction), while the third connecting segment 4213 is bent between the first connecting segment 4211 and the second connecting segment 4212, forming a semi-circular shape.

[0089] However, in practical applications, due to the overall flexibility of the first bending portion 421, the first connecting segment 4211 and the second connecting segment 4212 will not remain straight but will also bend to some 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. The first connecting segment 4211, the second connecting segment 4212, and the third connecting segment 4213 can be divided based on the location of the abrupt change in 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. In this configuration, the division can be based on the location of the three segments, i.e., the third connecting segment 4213 is located on the side of the housing of the drive assembly 2 (see reference). Figure 15 In the view direction, the first connecting segment 4211 and the second connecting segment 4212 are portions that have not yet been bent to the side of the housing of the drive assembly 2.

[0090] 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, thus jointly forming the first bending section 421 of the waveform, which is continuous and complete. Alternatively, the first connecting segment 4211, the second connecting segment 4212, and the third connecting segment 4213 can be constructed as waveforms with different shapes. For example, more inflection points can be set in the third connecting segment 4213, which has the greatest degree of deformation, while fewer inflection points can be set in the first connecting segments 4211 and the second connecting segment 4212. Furthermore, the first connecting segment 4211, the second connecting segment 4212, and the third connecting segment 4213 can be constructed as different unfolded shapes, with only one or two segments constructed as waveforms, and the remaining segments constructed as other shapes, such as straight lines or arcs.

[0091] Specifically, such as Figure 15 As shown, the ratio of the length of the third connecting segment 4213 to the diameter of the drive motor 21 ranges from 0.78 to 0.8, and / or the ratio of the length of the first connecting segment 4211 to the diameter of the drive motor 21 ranges from 0 to 0.27, and / or the ratio of the length of the second connecting segment 4212 to the diameter of the drive motor 21 ranges from 0.16 to 0.44. The diameter of the drive motor 21 ranges from 10 to 30 mm. In the electric toothbrush industry, commonly used diameters for the drive motor 21 include 10 mm, 18 mm, and 30 mm. It should be noted that... Figure 15The X1, X2 and X3 marked in the figure represent the lengths of the first connecting segment 4211, the second connecting segment 4212 and the third connecting segment 4213, respectively.

[0092] For example: when the diameter of the drive motor 21 is 10mm, the length X3 of the third connecting segment 4213 can be approximately 7.9mm, the length X1 of the first connecting segment 4211 ranges from 0 to 2.66mm, and the length X2 of the second connecting segment 4212 ranges from 1.65 to 4.31mm; when the diameter of the drive motor 21 is 18mm, the length X3 of the third connecting segment 4213 can be approximately 14.22mm, the length X1 of the first connecting segment 4211 ranges from 0 to 4.8mm, and the length X2 of the second connecting segment 4212 ranges from 2.9 to 7.76mm; when the diameter of the drive motor 21 is 30mm, the length X3 of the third connecting segment 4213 can be approximately 23.69mm, the length X1 of the first connecting segment 4211 ranges from 0 to 8mm, and the length X2 of the second connecting segment 4212 ranges from 4.93 to 12.93mm.

[0093] In one specific embodiment of this disclosure, the length of the third connecting segment 4213 ranges from 14.21 to 23.69 mm, and / or the length of the first connecting segment 4211 ranges from 0 to 8 mm, and / or the length of the second connecting segment 4212 ranges from 2.9 to 12.93 mm.

[0094] In one specific embodiment of this disclosure, the distance between the first connecting segment 4211 and the second connecting segment 4212 is in the range of 9-15mm. Figure 15 The X4 marked in the figure represents the distance between the first connecting segment 4211 and the second connecting segment 4212. For example... Figure 15 As shown, in the ideal case where the first connecting segment 4211 and the second connecting segment 4212 are substantially parallel, the distance between them is approximately equal to the sum of the radius of the drive motor 21 and the radius of the output shaft 211. However, in actual applications, both segments exhibit some degree of bending, resulting in variations in the distance. Therefore, the meaning of "distance" needs further clarification. (Reference) Figure 15 Let point P be the connection point between the first connecting segment 4211 and the sensor body 41, and point Q be the connection point between the second connecting segment 4212 and the reinforcing part 422. Draw two horizontal lines through points P and Q respectively (refer to...). Figure 15 Parallel lines in the view direction, the distance described in this embodiment is the distance X4 between the two parallel lines mentioned above.

[0095] In one embodiment of this disclosure, the drive assembly 2 includes a first side and a second side. The sensor body 41 is mounted on the first side, and the reinforcing portion 422 is disposed on the second side. The first bending portion 421 is configured to bend from the first side to the second side. It should be noted that the first side and the second side can be surfaces facing the same direction or surfaces facing different directions. In this embodiment, the first bending portion 421 does not complete a full circumference around the output shaft 211, meaning the first side and the second side are surfaces facing different directions. For example, when the first bending portion 421 completes half a circumference around the output shaft 211, the first side and the second side are the front and back sides of the drive assembly 2, respectively, i.e., two opposing sides.

[0096] refer to Figure 2 and Figure 3 The drive assembly 2 includes a flexible sleeve 22 configured to at least partially enclose the drive motor 21. The flexible sleeve 22 can be made of a soft, elastic material such as silicone or rubber. Enclosing the drive motor 21 with the flexible sleeve 22 helps to buffer vibrations during operation. A mounting groove extending along the first axis is provided on the second side of the flexible sleeve 22, and a partial reinforcing portion 422 is configured to be located within the mounting groove. The reinforcing portion 422 is embedded inside the mounting groove, thereby preventing contact between the reinforcing portion 422 and other external structures.

[0097] Further, refer to Figure 4 and Figure 6 The flexible sleeve 22 includes a front sleeve 221 and a rear sleeve 222, which are respectively configured to partially enclose the output shaft 211 and the opposite end 212 of the drive motor 21. The mounting groove includes a first groove segment 2241 on the front sleeve 221 and a second groove segment 2242 on the rear sleeve 222, which are interconnected. The first groove segment 2241 and the second groove segment 2242 are respectively located on the second side surfaces of the front sleeve 221 and the rear sleeve 222. The end of the reinforcing part 422 away from the first bending part 421 is configured to be fixed to the second groove segment 2242. Specifically, double-sided adhesive can be used to attach the reinforcing part 422 into the second groove segment 2242, thereby fixing the reinforcing part 422 to the drive assembly 2.

[0098] In one embodiment of this disclosure, reference is made to Figure 4 and Figure 7The circuit connector 42 also includes a second bend 423, which is connected to the end of the reinforcing part 422 away from the first bend 421. The second bend 423 can be made of the same material as the first bend 421 and can have a similar hardness. The rear sleeve 222 is also provided with a third groove 2243 communicating with the second groove segment. The extension direction of the third groove segment 2243 can be substantially perpendicular to the extension direction of the second groove segment 2242. The second bend 423 is configured to be partially located within the third groove segment 2243, which is used to accommodate the second bend 423. The second bend 423 can be bent from the second side to the first side, thereby establishing a communication connection with the control motherboard 5. Specifically, as shown in the figure... Figure 7 As shown, the end of the second bend 423 is configured as a connection end 4231, which is used to be soldered to the control motherboard 5, thereby realizing the communication connection between the sensor assembly 4 and the control motherboard 5.

[0099] In one embodiment of this disclosure, reference is made to Figure 6 and Figure 7 A first positioning member is provided within the first groove segment 2241, and a second positioning member is provided on the reinforcing part 422 corresponding to the position of the front sleeve 221. The second positioning member is configured to fit the first positioning member. One of the first and second positioning members can be a positioning post 2244, and the other can be a positioning groove 4220. In this embodiment, multiple positioning grooves 4220 are provided on the reinforcing part 422, and multiple positioning posts 2244 are provided on the inner wall of the first groove segment 2241. Specifically, the positioning post 2244 can be a semi-circular post, and the positioning groove 4220 can be configured as a semi-circular groove adapted to the positioning post 2244. When the reinforcing part 422 is installed in the first groove segment 2241, it can be not only glued and fixed using double-sided adhesive, but the multiple positioning grooves 4220 can also be respectively engaged with the multiple positioning posts 2244, thereby limiting the installation position.

[0100] In one embodiment of this disclosure, reference is made to Figure 8 The reinforcing portion 422 includes a first portion 4221 fixed within 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±0.03mm and a length of 1.4±0.2mm. Figure 8As shown in the figure, the shaded area represents the region covered by the adhesive 424. The adhesive 424 only covers the first part 4221, thereby fixing the reinforcing part 422 within the mounting groove. The second part 4222 is not covered by the adhesive 424 and is suspended relative to the drive assembly 2. The second part 4222 is the portion of the reinforcing part 422 that directly connects to the first bent part 421. Therefore, when the first bent part 421 vibrates at high frequency with the output shaft 211, the second part 4222 can float up and down with the vibration, thereby releasing stress and acting as a buffer. Under the buffering effect of the second part 4222, virtually no force is transmitted further to the first part 4221. Therefore, the first part 4221 can be stably fixed within the mounting groove and will not fall off under external force.

[0101] In one embodiment of this disclosure, reference is made to Figure 9 The circuit connector 42 is provided with communication lines, which are configured to run parallel to the outer contour of the circuit connector 42. Specifically, the communication lines include a first line 431 for connecting to the sensor body 41 and disposed on the first bend 421 and the second portion 4222, and a second line 432 disposed on the first portion 4221. In this embodiment, the first line 431 on the first bend 421 can be configured as a wave shape, thereby parallel to the outer contour of the first bend 421; the first line 431 on the second portion 4222 can be configured as a straight line, thereby parallel to the outer contour of the second portion 4222; the second line 432 on the first portion 4221 can be bent at the corresponding position of the positioning groove 4220 to avoid it, thereby parallel to the outer contour of the first portion 4221. In addition, a portion of the second line 432 is disposed on the second bend 423 to extend to the connection end 4231 for communication connection with the control motherboard 5.

[0102] This disclosure constructs the communication line so that it runs parallel to the outer contour of the circuit connector 42, thereby giving the communication line the exact same shape as the circuit connector 42. Because the circuit connector 42, through its special configuration and winding method, disperses stress and prevents breakage, the communication line, with 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 breaking.

[0103] In another embodiment of this disclosure, the communication line may not be parallel to the outer contour of the circuit connector 42. In this case, the communication line can be constructed as a straight line. In this embodiment, the first line 431 located on the first bend 421 of the waveform can be constructed as a straight line, 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. By constructing all the communication lines as straight lines, the difficulty and cost of processing are reduced.

[0104] In one embodiment of this disclosure, the communication line located on the first bend 421 is configured to be located on the side away from the output shaft 211. As previously mentioned, the communication line can be made of rolled copper, with the rolled copper line located on the side away from the output shaft 211 (i.e., the outer side), and the cured polyimide resin (PI) substrate located on the side close to the output shaft 211 (i.e., the inner side). It is understood that when the first bend 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 rolled copper material has good ductility, it is evident that the tensile strength of the communication line is better than its compressive strength. Therefore, this disclosure positions the communication line on the first bend 421 on the side away from the output shaft 211, thereby further preventing the communication line from breaking.

[0105] In one embodiment of this disclosure, such as Figure 9 As shown, the second line 432 is located on the side opposite to the first line 431. The end of the first line 431 away from the sensor body 41 is configured to extend into the first portion 4221 to connect with the second line 432. This achieves a smooth transition design at the connection point of the first line 431 and the second line 432. Specifically, the first line 431 and the second line 432 are located on the second portion 4222 and the first portion 4221, respectively. The end of the first line 431 extends into the first portion 4221, so that the connection point between the two is located in the first portion 4221 of the reinforcing part 4222. As mentioned above, the first portion 4221 is fixed in the mounting groove and is not affected by external forces, thus improving the connection stability of the first line 431 and the second line 432.

[0106] This disclosure designs the communication lines on the circuit connector 42 as single-sided traces, thereby reducing the thickness of the circuit connector 42. It is understood that a traditional double-sided trace design would result in a thicker circuit connector 42, reducing its flexibility and making it more prone to breakage. In this embodiment, the total thickness of the circuit connector 42 is approximately 0.06 mm, ensuring that the circuit connector 42, especially the first bend 421 and the second bend 423, has sufficient flexibility, thus preventing damage to the lines during high-frequency vibration.

[0107] Furthermore, this disclosure sets the routing face-changing position on the reinforcing part 422, while the first bending part 421 and the second bending part 423 can both maintain routing on the same side. This ensures the continuity of the routing 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 or short-circuit during bending. The single-sided routing design on the first bending part 421 ensures the flexibility of the waveform structure design during high-frequency vibration and enhances the bending resistance.

[0108] In one embodiment of this disclosure, reference is made to Figure 10 A corner 4330 is provided at the connection position between the first bend 421 and the second part 4222. In this embodiment, the corner 4330 is an acute angle, indicating that the structure at this location is relatively weak and relatively prone to tearing. A third line 433 is provided on the circuit connector 42 at the position corresponding to the corner 4330. The third line 433 is located on the same side as the first line 431 and inside the first line 431. The third line 433 can be the same wire as the first line 431 and the second line 432, but the third line 433 does not participate in signal transmission. Instead, it is only composed of a short section of wire independent of other lines. The third line 433 is located inside the first line 431, thereby strengthening the structure at the corner 4330 and providing tear resistance.

[0109] In one embodiment of this disclosure, the angle between the connection point of the communication line and the sensor body 41 and the first axis is 90±30°. Since the outer contour of the communication line is parallel to that of the circuit connector 42, the angle between the connection point of one end of the circuit connector 42 and the sensor body 41 and the first axis is also 90±30°. The optimal outgoing direction of the circuit connector 42 and its communication line is perpendicular to the first axis, thus maximally offsetting the first axis from the first bend. At this point, its outgoing direction is the same as the swing direction of the output shaft 211. In practical applications, the angle between the outgoing direction and the first axis can be between 60-120°. Within this range, the configuration formed by the first bend 421 can achieve good anti-fracture effect.

[0110] In one embodiment of this disclosure, reference is made to Figure 2The oral hygiene appliance handle 100 also includes a bracket 7 fixedly disposed inside the housing 1, and a fixing cover 8 disposed on the bracket 7. The bracket 7 is used to fix various components inside the oral hygiene appliance handle 100, and the fixing cover 8 and at least a portion of the bracket 7 enclose a first mounting space 71 for accommodating the drive assembly 2. The fixing cover 8 can be fixed to the bracket 7 by multiple screws 81, and together with the bracket 7, fixes the drive assembly 2 within the first mounting space 71. The bracket 7 may also be provided with a second mounting space 72 for accommodating a battery 721. The first mounting space 71 can communicate with the second mounting space 72, so that the battery 721 in the second mounting space 72 can power the drive motor 21 in the first mounting space 71.

[0111] In one embodiment of this disclosure, reference is made to Figure 2 A display component 3 is provided on the side of the drive component 2 near the fixed cover 8, for reference. Figure 1 The outer casing 1 has a display area 10, which can be a transparent part or a cutout area. The side of the display component 3 near the display area 10 is configured to display visual information. Specifically, the visual information may include various information such as the current vibration mode of the oral hygiene appliance, the status of the switch, the current gear, and the remaining battery power. Users can intuitively see this visual information, thereby assisting them in using the oral hygiene appliance more effectively.

[0112] like Figure 2 As shown, the fixed cover 8 has an opening 80, which is configured to at least fit the display component 3. The display component 3 is configured to transmit visual information to the display area 10 through the opening 80. To prevent the fixed cover 8 from obstructing the display component 3, the opening 80 needs to be provided on the fixed cover 8. The opening 80 can be a cutout in the fixed cover 8, and the area of ​​the opening 80 should be larger than the area of ​​the content displayed on the display component 3, thereby ensuring that the user can obtain complete visual information.

[0113] like Figure 2 As shown, a receiving groove 223 is provided on the first side of the front sleeve 221, and the display component 3 is at least partially housed in the receiving groove 223, thereby improving the impact resistance of the display component 3. Except for the side used to display visual information, the other sides of the display component 3 can be protected by the flexible sleeve 22. Specifically, in the event of an impact, the flexible sleeve 22 can provide cushioning for the display component 3, thereby extending the lifespan of the display component 3.

[0114] In one embodiment of this disclosure, such as Figure 2As shown, a flexible waterproof component 9 is fitted onto the output shaft 211, and the outer wall of the flexible waterproof component 9 is configured to be at least partially pre-pressed against the inner wall of the housing 1. In the case of an electric toothbrush, the brush head 200 mounted on the output shaft 211 will be in direct contact with water, and water may flow along the brush head 200 to the output shaft 211. To prevent liquid from flowing to the drive motor 21 and causing a short circuit, this disclosure provides a flexible waterproof component 9 fitted onto the output shaft 211. The flexible waterproof component 9 can isolate water, thereby preventing the drive motor 21 from contacting water and improving the safety of the oral cleaning device.

[0115] Example 2

[0116] This embodiment also provides a handle 100 for an oral cleaning device. The only difference between this embodiment and the first embodiment is the specific shape of the circuit connector 42 of the sensor assembly 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 assembly 2, the wiring method of the communication line, and other various structures can be completely consistent with the first embodiment, and will not be described again in this embodiment.

[0117] refer to Figures 12 to 14 With the output shaft 211 stationary, the first bend 421 completes at least one full rotation around the output shaft 211. Figure 12 The image shows the first bend 421 completing exactly one revolution around the output shaft 211. Figure 13 The diagram shows the first bend 421 surrounding the output shaft 211 more than one revolution.

[0118] As mentioned earlier, the first bend 421 in Embodiment 1 has a relatively short circumference, which places high installation requirements on the circuit connector 42. Therefore, the first bend 421 needs to be set as a waveform to solve this problem. In this embodiment, the first bend 421 can wrap around the output shaft 211 at least once, that is, it has a longer circumference, and the installation difficulty is relatively low.

[0119] Based on this, in one embodiment of this disclosure, the first bend 421 is constructed as a straight line in the unfolded state. Compared to the waveform structure in Embodiment 1, the straight first bend 421 and the straight communication line in this embodiment are easier to manufacture and process. They can also form a space around the output shaft 211. During the process of the output shaft 211 outputting oscillating power, the first bend 421 has sufficient deformation space, thereby preventing the output shaft 211 from applying excessive pulling force to the circuit connector 42 and preventing the circuit connector 42 from breaking.

[0120] In one embodiment of this disclosure, such as Figure 14 As shown, the circumference of the first bend 421 ranges from 34 to 50 mm, wherein, Figure 14 The length M marked in the figure represents the perimeter of the first bend 421. The perimeter of the first bend 421 should not be too long; otherwise, the radius of the approximately circular structure it forms will be too large, making it prone to interference and collisions with surrounding structural components during the sweeping vibration of the output shaft 211. This not only affects the lifespan of the circuit connector 42 itself but also generates noise. Conversely, the perimeter of the first bend 421 should not be too short; otherwise, the radius of the approximately circular structure it forms will be too small. During the sweeping vibration of the output shaft 211, the first bend 421 will not be able to release stress, leading to stress concentration and potential line breakage, resulting in communication abnormalities. Preferably, in the scheme using a drive motor 21 with a diameter of 18mm, based on the internal space design of the housing 1, the perimeter of the first bend 421 can be 42mm.

[0121] In one embodiment of this disclosure, reference is made to Figure 12 When the first bend 421 surrounds the output shaft 211 for a full circumference, the connection between the first bend 421 and the reinforcement 422 is configured to be suspended in the position corresponding to the sensor body 41. Figure 12 The diagram shows the first bend 421 encircling the output shaft 211 for a full circumference. The first bend 421 may also encircle the shaft two or three times, etc., and this disclosure does not limit this. When encircling the shaft for a full circumference, the connection point between the first bend 421 and the reinforcing part 422 is aligned with the sensor body 41. That is, when viewed from the first side facing the drive assembly 2, the connection point between the first bend 421 and the reinforcing part 422 can precisely obscure the sensor body 41.

[0122] The reinforcing portion 422 extends along the first axis and is fixed to the drive assembly 2. As previously described, the drive assembly 2 includes a first side and a second side, wherein the sensor body 41 is mounted on the first side and the reinforcing portion 422 is disposed on the second side. With the first bend 421 surrounding the entire circumference of the output shaft 211, the first side and the second side are surfaces facing the same direction. Figure 12 As shown, the mounting groove on the flexible sleeve 22 for mounting the first part 4221 of the reinforcing part 422 is located on the same surface as the sensor body 41.

[0123] Example 3

[0124] This embodiment provides an oral hygiene appliance, see reference. Figure 1The device includes a handle 100 and a brush head 200. The entire structure of the handle 100 has been described in detail in Embodiments 1 and 2, and will not be repeated here. The brush head 200 is disposed at the end of the handle 100 and is configured to connect to an output shaft 211. The brush head 200 may include multiple bristle clusters for contacting teeth to achieve a brushing function. The output shaft 211 of the drive motor 21 can drive the brush head 200 to oscillate, thereby improving the cleaning effect.

[0125] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A handle for an oral hygiene appliance, characterized in that, include: A housing configured to be gripped; The drive assembly is disposed inside the housing; The drive assembly includes a drive motor, the drive motor including an output shaft extending along a first axis; The drive motor is configured to output oscillating 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 disposed on the output shaft and to move under the drive of the output shaft; the circuit connector includes a first bend connected to the sensor body, the first bend being configured to surround the output shaft at least once; in the unfolded state, the first bend is configured to be straight.

2. The handle of the oral hygiene appliance according to claim 1, characterized in that, The circumference of the first bend ranges from 34 to 50 mm.

3. The handle of the oral hygiene appliance according to claim 1, characterized in that, The circuit connector also includes a reinforcing portion connected to the end of the first bent portion away from the sensor body.

4. The handle of the oral hygiene appliance according to claim 3, characterized in that, When the first bend surrounds the entire circumference of the output shaft, the connection between the first bend and the reinforcement is configured to be suspended at a position corresponding to the sensor body.

5. The handle of the oral hygiene appliance according to claim 3, characterized in that, The reinforcing portion is disposed on the drive assembly and is configured to extend along the direction of the first axis.

6. The handle of the oral hygiene appliance according to claim 5, characterized in that, The circuit connector is provided with a communication line, which is configured to run parallel to the outer contour of the circuit connector or to run along a straight line.

7. The handle of the oral hygiene appliance according to claim 6, characterized in that, The communication line located on the first bend is configured to be located on the side away from the output shaft.

8. The handle of the oral hygiene appliance according to claim 6, characterized in that, The drive assembly includes a first side and a second side, wherein the sensor body is mounted on the first side, the reinforcing part is disposed on the second side, and the first bending part is configured to bend from the first side to the second side. The drive assembly includes a flexible sleeve configured to at least partially enclose the drive motor; a mounting groove extending along the first axis is provided on a second side of the flexible sleeve, and a portion of the reinforcement is configured to be located within the mounting groove.

9. The handle of the oral hygiene appliance according to claim 8, characterized in that, When the first bend does not circumferentially surround the output shaft, the first side and the second side face different directions; when the first bend circumferentially surrounds the output shaft, the first side and the second side face the same direction.

10. The handle of the oral hygiene appliance according to claim 8, characterized in that, In the first axial direction, the drive motor further includes a counterpart end opposite to the output shaft; the flexible sleeve includes a front sleeve and a rear sleeve, the front sleeve and the rear sleeve being respectively configured to partially wrap around the output shaft and the counterpart end of the drive motor; The mounting groove includes a first groove segment located on the front end sleeve and a second groove segment located on the rear end sleeve, the first groove segment and the second groove segment being interconnected; the end of the reinforcing part away from the first bending part is configured to be fixed to the second groove segment.

11. The handle of the oral hygiene appliance according to claim 10, characterized in that, A first positioning component is provided in the first groove section, and a second positioning component is provided in the reinforcing part corresponding to the position of the front end sleeve; the second positioning component is configured to be adapted to the first positioning component.

12. The handle of the oral hygiene appliance according to claim 10, characterized in that, The circuit connector further includes a second bend, which is connected to the end of the reinforcing part away from the first bend; the rear end sleeve is also provided with a third groove segment communicating with the second groove segment; the second bend is configured to be partially located within the third groove segment.

13. The handle of the oral hygiene appliance according to claim 8, characterized in that, The reinforcing part includes a first part fixed in the mounting groove and a second part suspended relative to the mounting groove; the second part has a thickness of 0.3±0.03mm and a length of 1.4±0.2mm.

14. The handle of the oral hygiene appliance according to claim 13, characterized in that, The communication line includes a first line for connecting to the sensor body and disposed on the first bend and the second part, and a second line disposed on the first part; the second line is disposed on the side opposite to the first line; the end of the first line away from the sensor body is configured to extend into the first part to connect with the second line.

15. The handle of the oral hygiene appliance according to claim 14, characterized in that, The connection point between the first bend and the second part is provided with a corner; a third line is provided on the circuit connector at the position corresponding to the corner, the third line is located on the same side as the first line and is located inside the first line.

16. The handle of the oral hygiene appliance according to claim 6, characterized in that, The angle between the connection point of the communication line and the sensor body and the first axis is 90±30°.

17. The handle of the oral hygiene appliance according to claim 6, characterized in that, The communication line is made of rolled copper material, and the hardness of the reinforcing part is greater than the hardness of the first bending part.

18. The handle of the oral hygiene appliance according to claim 3, characterized in that, A reinforcing structure is provided at the connection point between the reinforcing part and the first bending part.

19. The handle of the oral hygiene appliance according to claim 1, characterized in that, In the direction of extension of the first axis, the distance between the side of the first bent portion near the end of the output shaft and the end of the output shaft ranges from 31.07 to 32.05 mm.

20. The handle of the oral hygiene appliance according to claim 1, characterized in that, It also includes a control motherboard; the control motherboard is configured to be located within the housing and to be communicatively connected to the circuit connector; the control motherboard is configured to determine the pressure value applied to the output shaft based on the electrical signal output by the sensor body; and when the pressure value is greater than a threshold, the control motherboard is configured to issue a warning signal.

21. An oral hygiene appliance, characterized in that, include: Handle of the oral cleaning appliance according to any one of claims 1 to 20; A brush head is disposed at the end of the handle of the oral hygiene appliance and is configured to be connected to the output shaft.

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