Oral cleaning device

Abstract

The embodiment of the invention discloses oral cavity cleaning equipment. The oral cavity cleaning equipment comprises a shell, a motion transmission element and a cleaning assembly, one end of the shell is movably connected with a cleaning assembly, a motion transmission element is arranged in the shell, a functional element is arranged on one side of the cleaning assembly, a rotating disc is arranged on the other side of the cleaning assembly, and a rotating element is arranged on the rotating disc; the motion transmission element comprises a near end connected with the transmission mechanism and a far end matched with the rotating element, the far end is eccentrically arranged relative to the longitudinal axis of the near end, and when the far end conducts diameter-variable reciprocating motion relative to the center of the rotary disc, the rotating element and the cleaning assembly swing in a reciprocating mode. A limiting structure is further arranged on the rotary disc and used for axially limiting the cleaning assembly. Or at least the near end of the motion transmission element is integrally formed; or at least the near end of the motion transmission element is made of magnetisable materials.

Description

[0001] This application claims the priority of a Chinese patent application with the application number 202311626366.5 and the invention title "Oral Cleaning Device" filed with the Chinese Patent Office on November 30, 2023, the entire content of which is incorporated herein by reference. Technical Field

[0002] The present invention relates to the technical field of toothbrushes, and particularly to an oral cleaning device. Background Art

[0003] As a common oral cleaning tool nowadays, electric toothbrushes are mainly divided into sonic toothbrushes and rotary toothbrushes. Sonic brush heads mainly achieve vibration cleaning by swinging left and right at high frequencies, and rotary brush heads mainly achieve efficient cleaning by rotating left and right at high frequencies, with better cleaning effects.

[0004] The common rotary electric toothbrushes on the market are driven to the brush handle through a transmission mechanism that swings eccentrically left and right, and then transmitted from the brush handle to the brush head through multiple components. This requires multiple structures to be assembled and coordinated, which not only increases the difficulty of assembly and production, but also easily leads to poor consistency in the swing amplitude of the brush head. After long-term use, the gaps between the components increase, resulting in increased noise and attenuation of the swing amplitude, affecting the cleaning effect and user experience. Summary of the Invention

[0005] In view of this, the present invention provides an oral cleaning device to solve the problems of poor consistency in existing electric toothbrushes and easy impact on the cleaning effect and user experience during long-term use.

[0006] To achieve one or part or all of the above purposes or other purposes, the present application proposes an oral cleaning device, including a housing, a motion transmission element, and a cleaning component;

[0007] The cleaning component is movably disposed at one end of the housing. The motion transmission element is disposed inside the housing. A functional element is provided on one side of the cleaning component, and a turntable is provided on the other side of the cleaning component. A rotating element is provided on the turntable;

[0008] The motion transmission element includes a proximal end connected to a transmission mechanism and a distal end adapted to the rotating element. The distal end is eccentrically disposed relative to the longitudinal axis of the proximal end; the distal end is hinged to the rotating element, and the hinge point can slide away from or towards the axis of the turntable; when the distal end reciprocates relative to the center of the turntable, it can drive the rotating element to drive the cleaning component to perform a reciprocating circular swing;

[0009] A limiting structure is further provided on the turntable, and the limiting structure is used for axially limiting the cleaning component;

[0010] The movement transmission element or at least the proximal end thereof is integrally formed;

[0011] The movement transmission element or at least the proximal end thereof is made of a magnetizable material.

[0012] Further, the rotating element is a rotating groove, a movable rod is provided at the distal end, the movable rod is located in the rotating groove, and the distance between the movable rod and the center of the cleaning assembly is between 2 mm and 4 mm.

[0013] Further, an extension column extends at one end of the movable rod away from the cleaning assembly, a limiting groove is provided on the inner side of the housing, and the extension column is located in the limiting groove and can move longitudinally in the limiting groove.

[0014] Further, the rotating element is a fixed rod, a rotating hole is provided at the distal end, the fixed rod is located in the rotating hole, and when the rotating hole moves longitudinally, the fixed rod moves transversely in the rotating hole.

[0015] Further, the distal end and the proximal end are connected in a form of bending, welding or assembling, and the projection of the distal end is in an "L" shape, a "T" shape or a rotating groove shape.

[0016] Further, the magnetic adsorption force of the proximal end of the movement transmission element is set between 3.5 N and 35 N.

[0017] Further, a guiding ring is fixed on the inner side wall of the housing, and the movement transmission element passes through the guiding ring and can reciprocate longitudinally in the guiding ring.

[0018] Further, the maximum reciprocating movement stroke of the movement transmission element in the longitudinal direction is 1-5 mm, and the rotation angle of the cleaning assembly is between -38° and 38°.

[0019] Further, the proximal end is columnar or column-like, and the proximal end extends into the cavity at the upper end of the housing.

[0020] Further, the shortest distance from the center point of the movable rod to the central axis of the proximal end is 1.5-4.5 mm.

[0021] Implementing the embodiments of the present invention will have the following beneficial effects:

[0022] By using the oral cleaning device provided by the present invention, the motion transmission element is integrally formed. When the distal end reciprocates longitudinally, it can drive the rotating element to move. Since the limiting structure limits the turntable, the turntable can only rotate back and forth on the vertical plane, driving the functional element provided on the cleaning assembly to rotate. The transmission mechanism is transmitted to the turntable via the motion transmission element, with fewer components, less energy loss during the transmission process, and less impact on the entire transmission process due to the increase in the clearance of the accessories. Even after long-term use, the noise and swing amplitude will not be greatly affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Among them:

[0025] Figure 1 is a side view of an embodiment of the oral cleaning device proposed in this application;

[0026] Figure 2 is Figure 1 a cross-sectional schematic diagram of;

[0027] Figure 3 is Figure 2 an enlarged view of part A in;

[0028] Figure 4 is a cross-sectional view of another cross-section of an embodiment of the oral cleaning device proposed in this application;

[0029] Figure 5 is a schematic structural diagram of an embodiment of the oral cleaning device proposed in this application without showing the housing;

[0030] Figure 6 is a schematic diagram of the working state of an embodiment of the oral cleaning device proposed in this application without showing the housing;

[0031] Figure 7 is a schematic structural diagram of the housing of another embodiment of the oral cleaning device proposed in this application;

[0032] Figure 8 is a schematic structural diagram of another embodiment of the oral cleaning device proposed in this application without showing the housing;

[0033] Figure 9 is a schematic structural diagram of yet another embodiment of the oral cleaning device proposed in this application without showing the housing;

[0034] Figure 10 A cross-sectional view of an embodiment of the oral cleaning device proposed in this application;

[0035] Figure 11 A schematic structural view of the tongue cleaning brush head proposed in this application;

[0036] Figure 12 A schematic view of the snap connection between the brush head and the brush handle;

[0037] Figure 13 A schematic view of the magnetic connection between the brush head and the brush handle.

[0038] Reference numerals:

[0039] 1. Housing; 12. Limiting groove; 13. Guide ring;

[0040] 2. Motion transmission element; 21. Movable rod; 211. Extension column; 22. Rotation hole;

[0041] 3. Cleaning assembly; 31. Functional element; 32. Turntable; 321. Rotation groove; 322. Accommodation groove; 33. Limiting structure; 34. Rotating shaft; 35. Fixed rod;

[0042] 4. Handle;

[0043] 5. Transmission mechanism; 51. Driving gear; 52. Driven gear; 53. Transmission rod; 54. Sleeve; 55. Eccentric column; 56. Rotating shaft;

[0044] 6. Motor;

[0045] 7. Storage battery. Detailed implementation manners

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order.

[0047] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the present application. The phrase appearing in various places in the specification is not necessarily referring to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] To enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0049] Refer to Figures 1 to 6 , the present application provides an oral cleaning device, including a housing 1, a motion transmission element 2, and a cleaning component 3;

[0050] The cleaning component 3 is movably connected to one end of the housing 1. A functional element 31 is provided on one side of the cleaning component 3. The functional element 31 can be, as Figure 1 shown, a toothbrush head including multiple groups of bristles. At this time, the oral cleaning device can be used as a toothbrush. The functional element 31 can also be other components, such as a tongue cleaning brush head or a soft rubber cleaning brush head, etc. For example, as Figure 8 or Figure 11 shown, a tongue cleaning brush head. At this time, the oral cleaning device can be used as a tongue cleaner. Specifically, a turntable 32 is provided on the other side of the cleaning component 3. A rotating element is provided on the turntable 32. The rotating element is arranged offset from the center of the cleaning component 3. The distal end of the motion transmission element 2 cooperates with the rotating element. When the distal end moves longitudinally back and forth, it drives the rotating element and the cleaning component 3 to swing back and forth together. Since the distal rotating element is hinged, and the hinge can slide offset or towards the axis of the turntable; when the motion transmission element moves longitudinally back and forth, when the distal end moves back and forth relative to the center of the turntable, at this time, it can drive the rotating element to drive the cleaning component to perform a reciprocating circular swing. The above eccentric motion means that during the reciprocating motion of the distal end, the distance of the distal end from the axis of the turntable continuously changes during the motion process, that is, this distance changes at the next moment relative to the previous moment.

[0051] The motion transfer element 2 is arranged inside the housing 1. The proximal end of the motion transfer element 2 is used to connect with the transmission mechanism, and is cylindrical or approximately cylindrical, such as an elliptical cylinder, etc. The proximal end extends into the cavity of the housing, and at least the proximal end is integrally formed. The distal end of the motion transfer element 2 is the end close to the cleaning assembly 3, that is, it includes a movable rod 21 or a rotating hole 22 adapted to the rotating element, and a connecting rod connecting the movable rod 21 or the rotating hole 22 to the proximal end. The shortest distance from the center point of the movable rod 21 to the central axis of the proximal end is 1.5 - 4.5 mm, and the distance between the movable rod and the center of the cleaning assembly is between 2 mm and 4 mm. In addition, the distal end and the proximal end can be integrally formed in a bent manner, or on this basis, the extension column 211 can be connected to the distal end by welding or riveting.

[0052] The transmission mechanism 5 has a magnetic connection part. The magnetic attraction force between the proximal end of the motion transfer element 2 and the magnetic connection part is set between 3.5 N and 35 N, preferably between 3.5 N and 20 N, such as 15 N. When the magnetic attraction force is set to 15 N, first, the connection strength of 15 N ensures that the toothbrush will not fall off during vibration. Second, when an adult uses it, he can easily pull it off. Then, when an ordinary child uses it and needs to change the toothbrush head, he can also pull it off with the greatest strength. More specifically, as Figure 12 and Figure 13 shown, Figure 12 and Figure 13 show the situation when the toothbrush head and the toothbrush handle are connected, that is, when the toothbrush head and the toothbrush handle are connected, one is the force of the connection buckle between the main body of the toothbrush head and the toothbrush handle, and the other is the magnetic attraction force between the proximal end and the magnetic connection part.

[0053] Table 1: Actual insertion and extraction force test of the main body of the toothbrush head and the toothbrush handle (including buckle force and magnetic attraction force)

[0054]

[0055] Table 2: Insertion and extraction force of the connection buckle of the main body of the toothbrush head and the toothbrush handle (only including the buckle force)

[0056]

[0057] Table 3: Magnetic insertion and extraction force of the main body of the toothbrush head and the toothbrush handle (only including the magnetic attraction force)

[0058]

[0059]

[0060] From the above test data, it can be obtained that the average insertion and extraction force of the buckle is about 7 - 8 N, and the single magnetic attraction force is about 9 - 15 N. This data mainly reflects the insertion and extraction force of the buckle.

[0061] Table 4: Maximum or tolerable pulling force for normal use by adults (since the insertion force has nothing to do with magnetic attraction, the maximum insertion force is not tested here)

[0062] Serial number Insertion force (N) Extraction force (N) Adult male 1 / 45 Adult male 2 / 45 Adult male 3 / 45 Adult male 4 / 45 Adult male 5 / 45 Adult female 1 / 40 Adult female 2 / 40 Adult female 3 / 40 Adult female 4 / 40 Adult female 5 / 40

[0063] Table 5: Maximum or tolerable pulling force for normal use by 6-year-old children (since the insertion force has nothing to do with magnetic attraction, the maximum insertion force is not tested here)

[0064]

[0065]

[0066] From the results of Tables 1 to 5 above, it can be concluded that the insertion and extraction force of the buckle itself is 7 - 8N. Subtracting the buckle force, the maximum force for adults is basically acceptable within 35N, and for children within 20N. That is, 20N is the optimal force for both adults and children to replace the toothbrush head normally with a relatively high connection strength.

[0067] When the housing 1 is inserted into the toothbrush handle, the top of the transmission mechanism provided inside the toothbrush handle is connected to the motion transmission element 2 by magnetic attraction, and drives the motion transmission element 2 to reciprocate longitudinally. This transmission mechanism can be an existing structure and will not be elaborated here. The trajectory of the motion of the motion transmission element 2 is perpendicular to the horizontal line, so that the distal end makes a variable-diameter motion relative to the center of the turntable. The lower end of the motion transmission element 2 is close to the transmission mechanism and is symmetrically arranged with respect to the longitudinal central axis of the cleaning component 3. The upper end of the motion transmission element 2 gradually deviates to one side. In this embodiment, the rotating element is an elliptical rotating groove 321. The upper end of the motion transmission element 2 is provided with a movable rod 21. That is, the projection of one side of the motion transmission element 2 is similar to the shape of '7'. The movable rod 21 is located in the rotating groove 321. When the movable rod 21 reciprocates longitudinally with the motion transmission element 2, the movable rod 21 will drive the rotating groove 321 to rotate.

[0068] Specifically, the elliptical rotating groove 321 can leave enough space for the movement of the movable rod 21. The longitudinal movement of the movable rod 21 drives the rotating groove 321 to rotate around the center point of the cleaning component 3, and the cleaning component 3 rotates together with the rotating groove 321. Its rotation direction is as Figure 6 shown by the arrow in Figure 6Taking the direction shown as an example, when the motion transfer element 2 moves upward, the cleaning assembly 3 rotates clockwise; when the motion transfer element 2 moves downward, the cleaning assembly 3 rotates counterclockwise. The transmission mechanism drives the motion transfer element 2 to move up and down at a high frequency, and the cleaning assembly 3 then rotates at a high speed counterclockwise or clockwise accordingly, driving the functional element 31 on the other side of the cleaning assembly 3 to rotate at a high speed. Taking a toothbrush as an example, it can achieve the cleaning of teeth. It is worth mentioning that since the motion transfer element 2 itself does not deform and does not have the drawback of deformation failure, the swing amplitude of the entire structure is highly consistent and it is more durable.

[0069] In another embodiment, as Figure 9 shown, the rotating element is a fixed rod 35 arranged on the turntable. The fixed rod 35 is eccentrically arranged, and a rotating hole 22 is provided at the distal end. The fixed rod 35 is located within the rotating hole 22. The rotating hole 22 is oval or waist-shaped. When the rotating hole 22 moves longitudinally, the fixed rod 35 slides within the rotating hole 22. Its working principle is similar to that of the above embodiment and will not be elaborated here.

[0070] In this embodiment, the orthographic projection of the turntable 32 is composed of two bows sharing a common chord. The distance from the center point of the rotating groove 321 to the center point of the cleaning assembly 3 is equal to the distance from the center point of the cleaning assembly 3 to the other edge of the turntable 32, or the former distance can be slightly greater than the latter distance. The greater the former distance, when the movable rod 21 moves upward, the side wall of the rotating groove 321 receives an upward force, and the moment of this force is longer, and the force required to drive the turntable 32 to rotate is smaller, which is more labor-saving. At the same time, considering the size of the housing 1 and the stability of the transmission, it is preferably made that the former distance is equal to the latter distance.

[0071] In this embodiment, a rotating shaft 34 is also inserted into the turntable 32. The rotating shaft 34 is arranged at the center of the cleaning assembly 3. One end of the rotating shaft 34 abuts against the housing 1. The rotating shaft 34 is fixed to the inside of the turntable 32 by means of assembly, and the turntable 32 drives the cleaning assembly 3 to rotate together around the rotating shaft 34.

[0072] A limiting structure 33 is arranged on the turntable 32, and the limiting structure 33 is used for axially limiting the cleaning assembly 3. As Figure 4 shown, the turntable 32 is provided with a receiving groove 322 with a longitudinal opening, and the housing 1 is provided with a longitudinal through hole. The limiting structure 33 is inserted into the receiving groove 322 from the through hole and abuts against the side wall of the receiving groove 322, and the receiving groove 322 can rotate relative to the limiting structure 33. The rotating shaft 34 prevents the turntable 32 from moving in the horizontal or vertical direction, while the limiting structure 33 prevents the turntable 32 from moving along the direction in which the rotating shaft 34 extends. The turntable 32 can only rotate circumferentially. In this embodiment, the limiting structure 33 is a limiting pin.

[0073] In another embodiment, as Figure 7and Figure 8 As shown in Figure 8 , an extension post 211 extends from one end of the movable rod 21 away from the cleaning assembly 3. A limiting groove 12 is provided inside the housing 1. The extension post 211 is located in the limiting groove 12 and can move longitudinally in the limiting groove 12. Through the restriction of the extension post 211 by the limiting groove 12, the motion transmission element 2 is not prone to shaking, so that the distance from the rotation shaft 34 to the vertical line where the motion track of the movable rod 21 is located is always fixed. During this process, the distance between the movable rod 21 and the rotation shaft 34 is a variable distance, and the maximum motion stroke of the motion transmission element 2 in the longitudinal direction is 1-5 mm. Preferably, the maximum motion stroke is 1.5 mm - 3.5 mm. At this time, the rotation angle of the cleaning assembly 3 is between -38° and 38°, which can sufficiently clean the teeth.

[0074] In addition, a guiding ring 13 is fixed on the inner side wall of the housing 1. The motion transmission element 2 passes through the guiding ring 13 and can reciprocate longitudinally in the guiding ring 13. The guiding ring 13 plays a role in guiding and limiting the motion transmission element 2, so that the motion transmission element 2 does not deviate during the motion process. In this embodiment, symmetric clamping blocks are provided on the outer wall of the guiding ring 13, and symmetric clamping grooves are provided on the inner side wall of the housing 1 at corresponding positions. The clamping blocks are adapted to the clamping grooves. After clamping, the position of the guiding ring 13 is fixed and will not move with the motion of the motion transmission element 2. The inner diameter of the guiding ring 13 is the same as the outer diameter of the proximal end of the motion transmission element 2, with less friction, less loss during the transmission process, and can also prevent the motion transmission element 2 from deflecting and affecting the use.

[0075] In this embodiment, the motion transmission element 2 is integrally formed. One end of the motion transmission element 2 away from the cleaning assembly 3 has a horizontal end face, which can be adapted to the transmission mechanism. At least the proximal end of the motion transmission element 2 is made of magnetizable metal material. In another embodiment, at least the proximal end of the motion transmission element 2 is a plastic material mixed with magnetic powder. That is, the proximal end of the motion transmission element 2 can be connected and fixed to the distal end of the transmission mechanism by magnetic attraction.

[0076] Referring to Figure 10, the oral cleaning tool further includes a handle 4. The handle 4 is connected to the lower end of the housing 1. A transmission mechanism 5 and a motor 6 are provided inside the handle 4. The output end of the motor 6 is connected to the proximal end of the transmission mechanism 5. A storage battery 7 is also provided inside the handle 4. The storage battery 7 is located below the motor 4 and is electrically connected to the motor 4. Specifically, the transmission mechanism 5 includes a driving gear 51, a driven gear 52 and a transmission rod 53. The driving gear 51 is sleeved on the output shaft of the motor 6 and rotates together with the output shaft of the motor 6. The motor 6 is fixedly connected to the inner wall of the handle 4. The output shaft of the motor 6 is arranged in the same direction as the handle 4, specifically, upward along the length direction of the handle 4. The driving gear 51 is horizontally rotatably connected to the output shaft of the motor 6. The driven gear 52 is a bevel gear. The driven gear 52 is perpendicular to the driving gear 51. The driven gear 52 meshes with the driving gear 51 to convert the horizontal rotation into a vertical rotation. The transmission rod 53 is drivingly connected to the driven gear 52. The motor 6 drives the driving gear 51 to rotate horizontally, drives the driven gear 52 to rotate vertically, and then the driven gear 52 drives the transmission rod 53 to reciprocate up and down.

[0077] Specifically, a sleeve 54 is provided at the lower end of the transmission rod 53. An eccentric post 55 is provided on the driven gear 52. The sleeve 54 is sleeved on the eccentric post 55. The driven gear 52 is provided with a horizontal rotating shaft 56. The rotating shaft 56 axially penetrates along the eccentric post 55 and passes through the bottom of the sleeve 54. Both ends of the rotating shaft 56 are rotatably connected to the inner wall of the handle 4 to rotatably support the driven gear 52. The driven gear 52 drives the eccentric post 55 to rotate around the rotating shaft 56. The sleeve 54 swings up and down as the eccentric post 55 rotates, and thus can drive the entire transmission rod 53 to reciprocate up and down. A magnetic connection portion for magnetically connecting with the motion transmission element 2 is provided at the upper end of the transmission rod 53. Since the proximal end of the motion transmission element 2 is made of a magnetizable material, the transmission rod 53 can ultimately drive the functional component 31 to swing to clean the user's oral cavity.

[0078] Obviously, the embodiments described above are only a part of the embodiments of the present application, rather than all of the embodiments. The accompanying drawings show the preferred embodiments of the present application, but do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure made by using the specification and drawings of the present application, directly or indirectly applied in other related technical fields, is equally within the scope of the patent protection of the present application.

Claims

1. An oral cleaning device, characterized in that, It includes a housing, a motion transmission element and a cleaning assembly; The cleaning assembly is movably disposed at one end of the housing. The motion transmission element is disposed inside the housing. A functional element is provided on one side of the cleaning assembly, a turntable is provided on the other side of the cleaning assembly, and a rotating element is provided on the turntable; The motion transmission element includes a proximal end connected to a transmission mechanism and a distal end adapted to the rotating element. The distal end is eccentrically disposed relative to the longitudinal axis of the proximal end; the distal end is hinged to the rotating element, and the hinge point can slide away from or towards the axis of the turntable; when the distal end reciprocates relative to the center of the turntable, it can drive the rotating element to drive the cleaning assembly to perform a reciprocating circular swing; A limiting structure is further provided on the turntable, and the limiting structure is used for axially limiting the cleaning assembly; The motion transmission element or at least the proximal end is integrally formed, and the motion transmission element or at least the proximal end is made of a magnetizable material.

2. The oral cleaning device according to claim 1, wherein, The rotating element is a rotating groove, an active rod is provided at the distal end, the active rod is located in the rotating groove, and the distance between the active rod and the center of the cleaning assembly is between 2 mm and 4 mm.

3. The oral cleaning device according to claim 2, characterized in that, An extension column extends at the end of the active rod away from the cleaning assembly. A limiting groove is provided on the inner side of the housing, and the extension column is located in the limiting groove and can longitudinally move in the limiting groove.

4. The oral cleaning device according to claim 1, wherein, The rotating element is a fixed rod, a rotating hole is provided at the distal end, the fixed rod is located in the rotating hole, and when the rotating hole moves longitudinally, the fixed rod moves horizontally in the rotating hole.

5. The oral cleaning device according to claim 1, characterized in that, The distal end is connected to the proximal end in the form of bending, welding or assembling, and the projection of the distal end is in the shape of "L" or "T" or a rotating groove.

6. The oral cleaning device according to claim 1, wherein The magnetic adsorption force of the proximal end of the motion transmission element is set between 3.5 N and 35 N.

7. The oral cleaning device according to claim 1, characterized in that, A guiding ring is fixed on the inner side wall of the housing, and the motion transmission element passes through the guiding ring and can reciprocate longitudinally in the guiding ring.

8. The oral cleaning device according to claim 1, characterized in that, The maximum reciprocating motion stroke of the motion transmission element in the longitudinal direction is 1 - 5 mm, and the rotation angle of the cleaning assembly is between -38° and 38°.

9. The oral cleaning device according to claim 1, characterized in that, The proximal end is columnar or column-like, and the proximal end extends into the cavity at the upper end of the housing.

10. The oral cleaning device according to claim 2, wherein, The shortest distance from the center point of the active rod to the central axis of the proximal end is 1.5 - 4.5 mm.

Images