Full-range multi-head automatic tooth-brushing machine

Abstract

Disclosed in the present invention is a full-range multi-head automatic tooth-brushing machine, comprising: a first brush head assembly, which reciprocates along an arrangement direction of teeth and is configured for cleaning inner sides, outer sides, and tooth surfaces of molars; a second brush head assembly which slides up and down or swings left and right and is configured for cleaning outer sides of incisors and canines; and a third brush head assembly, which slides up and down or swings left and right and is configured for cleaning inner sides of the incisors and canines. In the present invention, different brush head assemblies are arranged according to the classification of the teeth, and the combination of the brush heads not only can clean the inner sides, outer sides, and tooth surfaces of the molars, but also can cover and clean the outer sides and inner sides of the incisors and canines, thereby achieving full-range oral cleaning. U-shaped brush heads are used for the molars and reciprocate along a self-adaptive support in a direction similar to the tooth arrangement to achieve the purpose of tooth brushing. The tooth-brushing machine has the advantages of stable tooth-brushing action, a reliable tooth-cleaning effect, and wide application in the population.

Description

Full range of multi-head automatic toothbrush machines Technical Field

[0001] The present invention relates to the technical field of personal care products, and in particular to a full-range multi-head automatic teeth brushing machine. Background Art

[0002] Brushing your teeth is an important part of oral health. By brushing your teeth, you can effectively remove plaque and food debris on the surface of and between teeth, prevent oral health problems such as tooth decay, gum disease and bad breath, and keep your mouth clean and healthy. Technical issues

[0003] Traditional handheld toothbrushes require controlled brushing force and angle, resulting in uneven brushing and incomplete brushing. Furthermore, they require a certain amount of wrist and arm strength, making them difficult for some people (such as the elderly, children, and those with arthritis). While existing automatic toothbrushes can automate the brushing action, their single brush head design only cleans a limited area of ​​the tooth surface, making it difficult to meet the full range of brushing needs and leaving blind spots. Newer U-shaped toothbrushes can adapt to the shape of the mouth and provide comprehensive coverage, but they also suffer from issues such as incomplete tooth contact and high brush head replacement costs.

[0004] Chinese patent application number 201922324122.7, filed on December 23, 2019, discloses a comprehensive tooth cleaning device comprising a brush head, a curved belt, and a base. The brush head is connected to the curved belt, which in turn is connected to the base. The curved belt conforms to the shape of the tooth rows and exhibits a certain degree of elasticity. The brush head can move reciprocally along the tooth rows along the curved belt, thereby achieving the desired effect. This tooth cleaning device has a good cleaning effect on molars and molars, but is less effective on incisors and canines. Furthermore, this tooth cleaning device utilizes the curved belt as a transmission component for the reciprocating motion of the brush head. The elasticity of the curved belt allows it to function effectively when the brush head is pulled outward, but it can bend and deform when pushed inward, affecting the effective transmission of force. Furthermore, because the brush head uses the teeth as a guide, it requires relatively aligned teeth. For users with uneven teeth or missing teeth, the brush head can easily become stuck in gaps, hindering its use. Technical Solutions

[0005] In order to achieve efficient cleaning of teeth in different areas, the present invention provides a full-range multi-head automatic toothbrush machine.

[0006] The technical solution of one aspect of the present invention is as follows: A full-range multi-head automatic toothbrush machine, comprising: a first brush head assembly, which is used to clean the inner side, outer side and tooth surface of molars and molars by reciprocating along the arrangement direction of teeth; a second brush head assembly, which is used to clean the outer side of incisors and canines by sliding up and down or swinging left and right; a third brush head assembly, which is used to clean the inner side of incisors and canines by sliding up and down or swinging left and right; a body, which serves as a mounting base for the first brush head assembly, the second brush head assembly and the third brush head assembly, and has an occlusal limiter corresponding to the incisor; a power assembly, which is installed in the body, and provides driving force for the first brush head assembly, the second brush head assembly and the third brush head assembly.

[0007] Preferably, the body includes: an outer main body, which serves as the installation part of the second brush head assembly; an inner extension part, which is integrated with the outer main body and extends to form a tongue-shaped structure; the outer and inner areas of the inner extension part corresponding to the incisors serve as the installation parts of the first brush head assembly and the third brush head assembly respectively, and the occlusal limiter is arranged on the upper and lower surfaces of the inner extension part corresponding to the incisors.

[0008] Preferably, the occlusal limiter is made of a flexible material and has a limit groove adapted to the incisor.

[0009] Preferably, the first brush head assembly includes: a first brush head having an H-shaped brush surface, which wraps the teeth of the upper and lower jaws from three directions: the inner side of the teeth, the outer side of the teeth, and the tooth surface; an adaptive bracket, which is movably mounted on the body and has an arc-shaped track similar to the arrangement direction of the molars and molars, and the first brush head is slidably assembled in the arc-shaped track; a transmission member, which drives the first brush head to move back and forth along the arc-shaped track under the action of the power assembly.

[0010] Preferably, the adaptive bracket is a rigid hollow tube, the arc track is formed inside the hollow tube, the transmission member is an elastic push-pull rod, the push-pull rod is accommodated inside the hollow tube for axial sliding, the front end of the push-pull rod is connected to the first brush head, and the end is linked to the power assembly.

[0011] Preferably, the hollow tube is provided with an axially extending notch within the reciprocating movement range of the first brush head, and a connecting member between the first brush head and the transmission member is exposed from the notch.

[0012] Preferably, the power assembly includes: a motor as a power source; a slide movably installed in the fuselage for linear reciprocating movement, connected to the end of the push-pull rod; a first transmission mechanism, which is transmission-connected between the slide and the motor to realize the reciprocating sliding of the slide.

[0013] Preferably, the first brush head assembly has two pairs of groups, corresponding to the teeth on the left and right sides respectively; the two adaptive brackets are symmetrically arranged, hinged to the external body in a clamp-like shape, and can be opened and closed freely to achieve adaptive adjustment.

[0014] Preferably, the outer end of the adaptive bracket extends outward to form a handle outside the oral cavity.

[0015] Preferably, the second brush head assembly includes: a second brush head for covering the outside of the incisors and canines; a guide post vertically arranged on the body; and a guide sleeve serving as a bearing component of the second brush head, which slides back and forth along the axial direction of the guide post under the action of the power assembly.

[0016] Preferably, the second brush head assembly has two pairs of groups, corresponding to the teeth on the left and right sides respectively, and the two guide sleeves can rotate in a small range in the circumferential direction relative to their respective guide pillars.

[0017] Preferably, the two guide sleeves slide back and forth alternately along the axial direction of their respective guide pillars under the action of the power assembly.

[0018] Preferably, the two second brush heads are connected into one body via a flexible material.

[0019] Preferably, the power assembly includes: a motor as a power source; and a second transmission mechanism that is transmission-connected between the guide sleeve and the motor to achieve reciprocating sliding of the guide sleeve.

[0020] Preferably, the third brush head assembly includes: a third brush head having a fan-shaped brush surface for covering the inner sides of the incisors and canines; a swinging member horizontally hinged on the inner extension portion, serving as a bearing member of the third brush head, and swinging back and forth under the action of the power assembly.

[0021] Preferably, the power assembly includes: a motor as a power source; a third transmission mechanism, which is transmission-connected between the swing member and the motor, or transmission-connected between the swing member and the second brush head assembly, to realize the reciprocating swing of the swing member.

[0022] The technical solution of the second aspect is as follows: A brush head assembly for cleaning molars and molars, comprising: a first brush head, which is a working part for brushing teeth, and the brush surface wraps around the teeth from at least two directions: the inside and the outside of the teeth; an adaptive bracket, which has an arc-shaped track similar to the arrangement direction of the teeth, and the first brush head is movably assembled in the arc-shaped track, and the position of the adaptive bracket in the oral cavity is adaptively adjusted according to the matching position of the first brush head and the teeth; a transmission part, which drives the first brush head to move back and forth along the arc-shaped track under the action of the power component.

[0023] The technical solution of the third aspect is as follows: A brush head assembly for cleaning incisors and canines includes: a second brush head, used to cover the outside of the incisors and canines; a guide post, arranged vertically; a guide sleeve, as the supporting component of the second brush head, which slides back and forth along the axial direction of the guide post under the action of the power component; the second brush head, the guide post and the guide sleeve each have two pairs, corresponding to the teeth on the left and right sides respectively, and the two guide sleeves can rotate in a small range in the circumferential direction relative to their respective guide posts. Beneficial effects

[0024] The present invention has the following beneficial effects:

[0025] 1. Different brush head components are set according to the classification of teeth. The combination of these brush heads can not only clean the inner side, outer side and tooth surface of molars and molars, but also cover and clean the outer side and inner side of incisors and canines, thus achieving full-range oral cleaning;

[0026] 2. A U-shaped brush head is used for molars and molars, and it moves back and forth along an adaptive bracket that is similar to the direction of tooth arrangement to achieve the purpose of brushing. It has the advantages of stable brushing action, reliable teeth cleaning effect, and wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the distribution of teeth.

[0028] FIG2 is a schematic diagram of a storage state according to an embodiment of the present invention.

[0029] FIG3 is a schematic diagram of a tooth brushing state according to an embodiment of the present invention.

[0030] FIG4 is a side view of a tooth brushing state according to an embodiment of the present invention.

[0031] FIG5 is a schematic diagram of the brushing state in the direction A according to an embodiment of the present invention.

[0032] FIG6 is a schematic diagram of a transmission structure in an embodiment of the present invention.

[0033] FIG7 is a side view of the transmission structure in an embodiment of the present invention.

[0034] FIG8 is a schematic diagram of the first brush head assembly in an embodiment of the present invention (other brush head assemblies are hidden).

[0035] FIG9 is a schematic diagram of the second brush head assembly in an embodiment of the present invention (other brush head assemblies are hidden).

[0036] FIG10 is a schematic diagram of a third brush head assembly in an embodiment of the present invention (other brush head assemblies are hidden).

[0037] First brush head assembly 1, first brush head 101, adaptive bracket 102, curved track 103, transmission member 104, handle 105;

[0038] Second brush head assembly 2, second brush head 201, guide post 202, guide sleeve 203;

[0039] The third brush head assembly 3, the third brush head 301, the swinging member 302;

[0040] Body 4, snap-in stopper 401, outer body 402, inner extension 403;

[0041] Power assembly 5, motor 501, slide 502, first transmission mechanism 503, second transmission mechanism 504. Modes for Carrying Out the Invention

[0042] The present invention will be further described below in conjunction with the embodiments and drawings.

[0043] Figure 1 shows a schematic diagram of the distribution of different teeth. Incisors are located at the front of the mouth, consisting of eight teeth (four on each side), with sharp cutting edges for cutting and crushing food. Canines are located next to the incisors, consisting of four teeth (two on each side), which are sharper and have longer crowns, used for biting and tearing food. Molars are located next to the canines, consisting of eight teeth (four on each side), with larger crowns and multiple pointed cusps, used for grinding and grinding food. Molars are located behind the molars, consisting of eight to twelve teeth (four on each side), which are typically larger and have multiple cusps, used for grinding and chewing food. As can be seen from Figure 1, molars and molars are much thicker than incisors and canines. Therefore, different brush head structures and brushing methods are required based on the type of teeth to achieve comprehensive and efficient oral hygiene.

[0044] In the embodiment, as shown in Figures 2 to 5, a full-range multi-head automatic toothbrush machine is provided, comprising: a first brush head assembly 1, which is used to clean the inner side, outer side and tooth surface of molars and molars by reciprocating along the arrangement direction of the teeth; a second brush head assembly 2, which is used to clean the outer side of incisors and canines by sliding up and down or swinging left and right; a third brush head assembly 3, which is used to clean the inner side of incisors and canines by sliding up and down or swinging left and right; a body 4, which serves as a mounting base for the first brush head assembly 1, the second brush head assembly 2 and the third brush head assembly 3, and has an occlusal limiter 401 corresponding to the incisor; a power assembly 5, which is installed in the body 4 to provide driving force for the first brush head assembly 1, the second brush head assembly 2 and the third brush head assembly 3. This embodiment provides different brush head components based on the type of teeth. These brush head combinations not only clean the inner, outer, and tooth surfaces of molars and molars, but also cover and clean the outer and inner surfaces of incisors and canines, thus achieving full oral hygiene. The bite stopper 401 provided on the body 4 has both positioning and fixing functions. The positioning function is used to place the brush heads of the toothbrush in place, while the fixing function is used during the brushing process.

[0045] In the embodiment, as shown in Figures 4 and 8, the body 4 includes: an outer body 402, which is exposed outside the oral cavity during brushing and serves as the mounting location of the second brush head assembly 2, and also provides a mounting cavity for the power assembly 5; an inner extension portion 403, which is integral with the outer body 402 and extends to form a tongue-shaped structure. When brushing teeth, the inner extension portion 403 extends into the oral cavity; the outer and inner areas of the inner extension portion 403 corresponding to the incisors serve as the mounting locations of the first brush head assembly 1 and the third brush head assembly 3, respectively, and the occlusal limiter 401 is provided on the upper and lower surfaces of the inner extension portion 403 corresponding to the incisors. In this embodiment, during the brushing process, the inner extension portion 403 needs to be extended into the oral cavity to facilitate the engagement of the incisors with the occlusal limiter 401. In addition, the inner extension portion 403, which serves as the mounting location of the first brush head assembly 1 and the third brush head assembly 3, can make the structures of the two more compact and the arrangement of the transmission mechanism more convenient.

[0046] In the embodiment, as shown in Figure 4, the occlusal stopper 401 is made of a flexible material and has a limiting groove adapted to the incisor. This type of occlusal stopper 401 can ensure a tight occlusion and protect the teeth.

[0047] In the embodiment, as shown in Figures 2 to 5 and 8, the first brush head assembly 1 includes: a first brush head 101 having an H-shaped brush surface that wraps around the teeth of the upper and lower jaws from three directions: the inside, outside, and surface of the teeth; an adaptive bracket 102 movably mounted to the body 4 and having an arcuate track 103 similar to the arrangement direction of the molars and molars, and the first brush head 101 is slidably assembled in the arcuate track 103; and a transmission member 104 that drives the first brush head 101 to reciprocate along the arcuate track 103 under the action of the power assembly 5. This embodiment uses a brush head that wraps around the molars and molars in all directions, and reciprocates along the adaptive bracket 102 similar to the arrangement direction of the teeth to achieve the purpose of brushing. It has the advantages of stable brushing action, reliable teeth cleaning effect, and wide applicability. This embodiment provides a special adaptive bracket 102, which works together with the teeth to serve as a guide limiter for the reciprocating movement of the first brush head 101. For users with uneven teeth or missing teeth, it can effectively avoid the first brush head 101 from getting stuck, thereby improving the versatility and reliability of the toothbrush machine.

[0048] In the embodiment, as shown in Figures 2 to 5 and 8, the adaptive bracket 102 is a rigid hollow tube with an arc-shaped track 103 formed inside the hollow tube. The transmission member 104 is an elastic push-pull rod, which is accommodated in the hollow tube for axial sliding. The front end of the push-pull rod is connected to the first brush head 101, and the end is linked to the power assembly 5. In addition, the hollow tube is provided with an axially extending notch within the reciprocating range of the first brush head 101, and the connecting member between the first brush head 101 and the transmission member 104 is exposed from the notch. The transmission member 104 of this embodiment can be made of elastic materials such as spring steel, which itself has a certain rigidity. With the help of the external hollow tube for restriction, it can ensure the stability of force transmission in both the outward pulling and inward pushing directions, thereby ensuring the reliable operation of the first brush head 101.

[0049] In the embodiment, as shown in Figures 2-5 and 8, the first brush head assembly 1 comprises two paired groups, one for each tooth on the left and right sides. Two adaptive brackets 102 are symmetrically arranged and hinged to the external body in a pincer-like manner, allowing for flexible opening and closing to achieve adaptive adjustment. This structure allows the two adaptive brackets 102 to have a certain degree of freedom. During brushing, the adaptive brackets 102 can automatically adjust their opening and closing according to the shape of the gums, aligning the adaptive brackets 102 with the tooth arrangement. This ensures that the first brush head 101 maintains stable contact with the inner and outer surfaces of the molars and molars, as well as the tooth surface, for optimal cleaning results.

[0050] In the embodiment, as shown in Figures 2-3 and 8, the outer end of the adaptive bracket 102 extends outward to form a handle portion 105 outside the oral cavity. The handle portion 105 can directly operate the opening and closing of the two sets of first brush head assemblies 1, mainly playing a role in the process of placing the toothbrush in or out of the oral cavity, realizing the switching between the two states and facilitating user operation.

[0051] In the embodiment, as shown in Figures 2-5 and 9, the second brush head assembly 2 includes: a second brush head 201, which is used to cover the outer sides of the incisors and canines; a guide post 202, vertically mounted on the body 4; and a guide sleeve 203, which serves as a support for the second brush head 201 and slides back and forth along the guide post 202 under the action of the power assembly 5. To address the tight outer sides of the incisors and canines, an up-and-down sliding brushing method offers the advantages of comprehensive and in-depth brushing, a large contact area, and high comfort, enabling more comprehensive cleaning and effectively removing plaque and food debris. Furthermore, the brushing surface of the second brush head 201 has a certain curvature to ensure a close fit with the outer sides of the incisors and canines.

[0052] In this embodiment, as shown in Figures 2-5 and 9, the second brush head assembly 2 comprises two pairs, one for each tooth on the left and right sides. The two guide sleeves 203 are capable of a small circumferential rotation relative to their respective guide posts 202. This structure allows the second brush head 201 to adaptively adjust within a small range (±10°) based on the degree of contact between the brush surface and the outer sides of the incisors and canines, ensuring the best possible contact between the brush surface and the outer sides of the teeth, thereby ensuring optimal cleaning results.

[0053] In the embodiment, as shown in Figures 2-5 and 9, the two guide sleeves 203 slide back and forth in an alternating manner along the axial direction of their respective guide posts 202 under the action of the power assembly 5. The alternating sliding of the guide sleeves 203 and the second brush head 201 can achieve a force balance, reducing noise and vibration to a certain extent and improving brushing comfort.

[0054] In the embodiment, as shown in Figures 2-5 and 9, the two second brush heads 201 are connected as a whole by a flexible material. This structure ensures that the two second brush heads 201 are relatively independent, each achieving adaptive adjustment to the outside of the teeth; while also maintaining good integrity, allowing the two second brush heads 201 to adhere to the outside of the teeth as a whole, achieving optimal teeth cleaning results.

[0055] In the embodiment, as shown in Figures 2 to 5 and 10, the third brush head assembly 3 includes: a third brush head 301 having a fan-shaped brush surface for covering the inner sides of the incisors and canines; and an oscillating member 302, horizontally hinged to the inner extension portion 403, serving as a bearing member for the third brush head 301 and oscillating back and forth under the action of the power assembly 5. The space inside the incisors and canines is narrow, and the third brush head 301 adopts a horizontal reciprocating oscillation, which can better contact the inner surface of the teeth within the limited space, optimize the coverage of the cleaning area and the contact angle between the brush head and the teeth, thereby improving the cleaning effect and efficiency, and effectively cleaning the inner sides of the incisors and canines.

[0056] In the embodiment, as shown in Figures 6 and 7, the power assembly 5 includes: a motor 501 as a power source; a slide 502, movably mounted in the body 4 for linear reciprocating movement and connected to the end of the push-pull rod; a first transmission mechanism 503, transmission-connected between the slide 502 and the motor 501, to achieve reciprocating sliding of the slide 502; a second transmission mechanism 504, transmission-connected between the guide sleeve 203 and the motor 501, to achieve reciprocating sliding of the guide sleeve; and a third transmission mechanism, transmission-connected between the swing member 302 and the motor 501, or transmission-connected between the swing member 302 and the second brush head assembly 2, to achieve reciprocating swinging of the swing member 302. The first transmission mechanism 503, the second transmission mechanism 504, and the third transmission mechanism can share the same motor 501, or use independent motors 501 as their power sources. In Figures 5 and 6, the first transmission mechanism 503 is a combination of a gear drive and a screw-nut drive. The slide 502 has an internal thread, which, driven by the screw, enables linear reciprocating sliding over a large length range, thereby driving the first brush head 101 to reciprocate over a large range. In Figure 6, the second transmission mechanism 504 is a cam-connecting rod mechanism, which drives the second brush head 201 to reciprocate vertically at a high speed. The third transmission mechanism (not shown) can use a crank-connecting rod mechanism or other transmission mechanism to achieve reciprocating oscillation of the third brush head 301, or it can achieve this by controlling the forward and reverse rotation of the motor 501. The third transmission mechanism can be directly connected to the motor 501 and also communicate with the second transmission mechanism 504 to achieve transmission.

[0057] Obviously, the above embodiments of the present invention are merely examples for illustrating the present invention and are not intended to limit the implementation of the present invention. Other obvious changes or modifications derived from the essence of the present invention still fall within the scope of protection of the present invention.

Claims

1. A full range multi-head automatic toothbrush machine, characterized in that, include: The first brush head assembly (1) is used to clean the inner side, outer side and tooth surface of molars and molars by reciprocating along the arrangement direction of the teeth; The second brush head assembly (2) is used for cleaning the outer sides of the incisors and canines by sliding up and down or swinging left and right; The third brush head assembly (3) is used for cleaning the inner sides of the incisors and canines by sliding up and down or swinging left and right; A body (4) serving as a mounting base for the first brush head assembly (1), the second brush head assembly (2), and the third brush head assembly (3), and having an occlusal limiter (401) corresponding to the incisor; A power assembly (5) is installed in the body (4) and provides driving force for the first brush head assembly (1), the second brush head assembly (2) and the third brush head assembly (3).

2. The full-range multi-head automatic toothbrush machine according to claim 1, characterized in that: The fuselage (4) comprises: An outer body (402) serving as a mounting location for the second brush head assembly (2); An inner extension portion (403) is integral with the outer body (402) and extends to form a tongue-shaped structure; The outer and inner areas of the inner extension portion (403) corresponding to the incisors serve as mounting locations for the first brush head assembly (1) and the third brush head assembly (3), respectively, and the occlusal limiter (401) is arranged on the upper and lower surfaces of the inner extension portion (403) corresponding to the incisors.

3. The full-range multi-head automatic toothbrush machine according to claim 1 or 2, characterized in that: The occlusal limiting member (401) is made of a flexible material and has a limiting tooth groove adapted to the incisor.

4. The full-range multi-head automatic toothbrush machine according to claim 1, characterized in that: The first brush head assembly (1) comprises: The first brush head (101) has an H-shaped brush surface, which covers the teeth of the upper and lower jaws from three directions: the inner side of the teeth, the outer side of the teeth, and the tooth surface; An adaptive bracket (102) is movably mounted on the body (4) and has an arc-shaped track (103) similar to the arrangement direction of the molars and the premolars, and the first brush head (101) is slidably mounted in the arc-shaped track (103); The transmission member (104) drives the first brush head (101) to move back and forth along the arc track (103) under the action of the power assembly (5).

5. The full-range multi-head automatic toothbrush machine according to claim 4, characterized in that: The adaptive bracket (102) is a rigid hollow tube, the arc track (103) is formed inside the hollow tube, the transmission member (104) is an elastic push-pull rod, the push-pull rod is accommodated inside the hollow tube and slides axially, the front end of the push-pull rod is connected to the first brush head (101), and the end is linked to the power assembly (5).

6. The full-range multi-head automatic toothbrush machine according to claim 5, characterized in that: The hollow tube is provided with an axially extending notch within the reciprocating movement range of the first brush head (101), and a connecting member between the first brush head (101) and the transmission member (104) is exposed from the notch.

7. The full-range multi-head automatic toothbrush machine according to claim 5, characterized in that: The power assembly (5) comprises: a motor (501), serving as a power source; A slide (502) is movably mounted in the body (4) to perform linear reciprocating movement and is connected to the end of the push-pull rod; The first transmission mechanism (503) is transmission-connected between the slide (502) and the motor (501) to achieve reciprocating sliding of the slide (502).

8. The full-range multi-head automatic toothbrush machine according to claim 4, characterized in that: The first brush head assembly (1) has two paired groups, corresponding to the teeth on the left and right sides respectively; the two adaptive brackets (102) are symmetrically arranged and hinged to the external body in a clamp-like manner, and can be opened and closed freely to achieve adaptive adjustment.

9. The full-range multi-head automatic toothbrush machine according to claim 8, characterized in that: The outer end of the adaptive bracket (102) extends outward to form a handle portion (105) outside the oral cavity.

10. The full-range multi-head automatic toothbrush machine according to claim 1, characterized in that: The second brush head assembly (2) comprises: A second brush head (201) is used to cover the outer sides of the incisors and canines; A guide column (202) is vertically arranged on the fuselage (4); The guide sleeve (203), serving as a bearing component of the second brush head (201), slides back and forth along the axial direction of the guide column (202) under the action of the power assembly (5).

11. The full-range multi-head automatic toothbrush machine according to claim 10, characterized in that: The second brush head assembly (2) has two paired groups, corresponding to the teeth on the left and right sides respectively, and the two guide sleeves (203) can rotate within a small range in the circumferential direction relative to their respective guide pillars (202).

12. The full-range multi-head automatic toothbrush machine according to claim 11, characterized in that: The two guide sleeves (203) slide back and forth in an alternating manner along the axial direction of their respective guide pillars (202) under the action of the power assembly (5).

13. The full-range multi-head automatic toothbrush machine according to claim 11, characterized in that: The two second brush heads (201) are connected into one body via a flexible material.

14. The full-range multi-head automatic toothbrush machine according to claim 11, characterized in that: The power assembly (5) comprises: a motor (501), serving as a power source; The second transmission mechanism (504) is transmission-connected between the guide sleeve (203) and the motor (501) to achieve reciprocating sliding of the guide sleeve.

15. The full-range multi-head automatic toothbrush machine according to claim 2, characterized in that: The third brush head assembly (3) comprises: A third brush head (301) having a fan-shaped brush surface for covering the inner sides of the incisors and canines; The swinging member (302) is horizontally hinged on the inner extension portion (403), serves as a bearing component of the third brush head (301), and swings back and forth under the action of the power assembly (5).

16. The full-range multi-head automatic toothbrush machine according to claim 15, characterized in that: The power assembly (5) comprises: a motor (501), serving as a power source; A third transmission mechanism is transmission-connected between the swing member (302) and the motor (501), or transmission-connected between the swing member (302) and the second brush head assembly (2), to achieve reciprocating swing of the swing member (302).

17. A brush head assembly for cleaning molars and molars, characterized in that: include: The first brush head (101) is a working part for brushing teeth, and the brush surface wraps around the teeth from at least two directions, the inner side and the outer side of the teeth; An adaptive bracket (102) has an arc-shaped track (103) that is similar to the arrangement direction of the teeth, the first brush head (101) is movably assembled in the arc-shaped track (103), and the position of the adaptive bracket (102) in the oral cavity is adaptively adjusted according to the matching position of the first brush head (101) and the teeth; The transmission member (104) drives the first brush head (101) to move back and forth along the arc track (103) under the action of the power assembly (5).

18. A brush head assembly for cleaning incisors and canines, characterized in that: include: A second brush head (201) is used to cover the outer sides of the incisors and canines; A guide post (202) is arranged vertically; A guide sleeve (203), serving as a bearing component of the second brush head (201), slides back and forth along the axial direction of the guide post (202) under the action of the power assembly (5); The second brush head (201), the guide post (202) and the guide sleeve (203) each have two pairs, corresponding to the teeth on the left and right sides respectively, and the two guide sleeves (203) can rotate in a small range in the circumferential direction relative to their respective guide posts (202).

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