Brush head and electric toothbrush

Abstract

This disclosure relates to a brush head and an electric toothbrush. The brush head is configured to be mounted on a body and includes a brush head body, a cleaning section, and a transmission section. The brush head body extends along a first axis and includes a sidewall defining a cavity. The cleaning section is attached to one end of the brush head body. The transmission section is at least partially disposed within the cavity and includes a first transmission member and a second transmission member. The first and second transmission members are connected by a connector and extend along the first axis. A first damping section is disposed between the first and second transmission members, and the first damping section is configured to contact the first transmission member and / or the second transmission member. The brush head provided by this disclosure, by providing a first damping section between the first and second transmission members, significantly reduces the operating noise between the first and second transmission members, thereby improving the user experience.

Description

Technical Field

[0001] This disclosure relates to the field of cleaning equipment, and more specifically to a brush head and an electric toothbrush. Background Technology

[0002] With technological advancements and improved living standards, electric toothbrushes have become increasingly common in people's daily lives due to their convenience and efficient cleaning capabilities. Compared to manual toothbrushes, electric toothbrushes use a motor to drive the brush head, effectively removing plaque and improving oral health.

[0003] However, existing electric toothbrushes offer only one cleaning mode, resulting in low cleaning efficiency. This limited functionality fails to thoroughly clean between teeth, creating blind spots. Furthermore, they are relatively noisy during operation, negatively impacting the user experience. Utility Model Content

[0004] In view of this, the present disclosure provides a brush head and an electric toothbrush to address the technical deficiencies existing in the prior art.

[0005] To achieve the above objectives, the present disclosure adopts the following technical solution: According to a first aspect of this disclosure, a brush head is provided, the brush head being configured to be mounted on a body, comprising: A brush head body extending along a first axis, including a sidewall defining a cavity; A cleaning section is attached to one end of the brush head body; The transmission part, at least partially disposed within the cavity, includes a first transmission member and a second transmission member, wherein the first transmission member and the second transmission member are connected by a connector and extend along the first axis direction; With the connecting member as the boundary, the first end of the second transmission member is configured to constrain the machine body, and the second end of the second transmission member is configured to eccentrically engage with the cleaning part; when the first transmission member is driven by an external vibration source, it drives the second transmission member to swing around the connecting member as the fulcrum, and under the constraint of the machine body, the second end of the first end of the second transmission member drives the cleaning part to rotate. A first damping part is provided between the first transmission member and the second transmission member. The first damping part is configured to contact the first transmission member and / or the second transmission member.

[0006] In one embodiment of this disclosure, the first damping portion is configured to extend along a direction perpendicular to the first axis.

[0007] In one embodiment of this disclosure, at least two first damping portions are provided, and the at least two first damping portions are configured to be spaced apart in the direction of the first axis.

[0008] In one embodiment of this disclosure, with the connector as the boundary, at least one of the first damping portions is configured to be disposed on the side where the second end of the second transmission member is located, and at least one of the first damping portions is configured to be disposed on the side where the first end of the second transmission member is located.

[0009] In one embodiment of this disclosure, a second shock-absorbing part is provided between the second transmission member and the brush head body, the second shock-absorbing part being configured to surround the connector.

[0010] In one embodiment of this disclosure, one end of the second transmission member is provided with a drive groove, and the cleaning part is provided with a flange that drives and engages with the drive groove; a third shock-absorbing part is provided between the drive groove and the flange.

[0011] In one embodiment of this disclosure, the third damping portion is configured to extend from the sidewall of the drive groove along the first axis to the end face of the second transmission member.

[0012] In one embodiment of this disclosure, the brush head body is provided with a through hole through which the second transmission member passes, and the third shock-absorbing part is configured to extend from the end face of the second transmission member to the position of the through hole.

[0013] In one embodiment of this disclosure, a fourth shock-absorbing part is provided on the outer side of the brush head body, the fourth shock-absorbing part at least partially passing through the brush head body and contacting the second transmission member.

[0014] According to a second aspect of this disclosure, an electric toothbrush is also provided, comprising: The fuselage is configured for gripping; A power shaft, which is mounted on the machine body; According to the brush head described above, the brush head is configured to be connected to the body via the drive shaft, the drive shaft is configured to be an external vibration source of the brush head, and the cleaning part of the brush head is configured to vibrate relative to the body.

[0015] The brush head provided in this disclosure significantly reduces the operating noise between the first and second transmission components by setting a first shock-absorbing part between the first and second transmission components, thereby improving the user experience.

[0016] 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

[0017] Figure 1 This is a schematic diagram of the structure of a brush head provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the structure of the second transmission component provided in an embodiment of this disclosure; Figure 3 This is a schematic diagram of the structure of the second transmission component provided in an embodiment of this disclosure.

[0018] 1-Brush head body; 2-Cleaning section; 3-Transmission section; 31-First transmission component; 32-Second transmission component; 4-Connector; 5-External vibration source; 6-Body; 7-First shock absorber; 8-Second shock absorber; 9-Third shock absorber; 10-Drive groove; 11-Flange; 12-Fourth shock absorber. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] The specific embodiments of this disclosure are described below with reference to the accompanying drawings.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] This disclosure relates to a brush head that can be used on an electric toothbrush to clean teeth or on a facial cleanser to clean the face. The brush head is configured to be mounted on a body and includes a brush head body, a cleaning section, and a transmission section. The brush head body extends along a first axis and includes sidewalls defining a cavity. The cleaning section is attached to one end of the brush head body and has bristles or other cleaning components. The transmission section is at least partially disposed within the cavity and includes a first transmission member and a second transmission member, which are connected by a connector and extend along the first axis. With the connector as the boundary, a first end of the second transmission member is configured to constrain the body, and a second end of the second transmission member is configured to eccentrically engage with the cleaning section. When the first transmission member is driven by an external vibration source, it causes the second transmission member to oscillate around the connector as a fulcrum. Under the constraint of the body, the second end of the second transmission member causes the cleaning section to rotate. A first damping section is disposed between the first and second transmission members, and the first damping section is configured to contact the first transmission member and / or the second transmission member.

[0028] The brush head provided in this disclosure significantly reduces the operating noise between the first and second transmission components by setting a first shock-absorbing part between the first and second transmission components, thereby improving the user experience.

[0029] For ease of understanding, please refer to the following: Figures 1 to 3 The specific structure and working principle of the brush head and electric toothbrush disclosed herein will be described in detail with reference to the embodiments.

[0030] refer to Figure 1 This disclosure provides a brush head configured to be mounted on a body 6, comprising a brush head body 1, a cleaning section 2, and a transmission section 3. The brush head body 1 extends along a first axis and includes sidewalls defining a cavity. The cleaning section 2 is attached to one end of the brush head body 1 and is provided with bristles for oral cleaning. In other embodiments, the cleaning section 2 may also be a silicone facial cleansing head or other component suitable for different cleaning scenarios. The transmission section 3 is mainly used for power transmission and is at least partially disposed within the cavity, including a first transmission member 31 and a second transmission member 32. The first transmission member 31 and the second transmission member 32 are connected by a connector 4 and extend along the first axis. The first transmission member 31 is located at the end of the transmission section 3 near the body 6 and is configured to directly or indirectly receive a drive from an external vibration source 5 within the body 6. A socket or locking groove may be provided at the end of the first transmission member 31 near the body 6 for engaging with the external vibration source 5 of the body 6.

[0031] With the connector 4 as the boundary, the first end of the second transmission member 32 is configured to constrain the body 6, and the second end of the second transmission member 32 is configured to eccentrically engage with the cleaning part 2. When the first transmission member 31 is driven by the external vibration source 5, it drives the second transmission member 32 to swing with the connector 4 as the fulcrum. Under the constraint of the body 6, the second end of the first end of the second transmission member 32 drives the cleaning part 2 to rotate.

[0032] To achieve vibration reduction and noise reduction, a first damping part 7 is provided between the first transmission component 31 and the second transmission component 32. The first damping part 7 is configured to contact the first transmission component 31 and / or the second transmission component 32. The first transmission component 31 and the second transmission component 32 of this disclosure mainly function to transmit torque. Therefore, the first transmission component 31 and the second transmission component 32 are made of relatively hard materials. When relative motion occurs between them, significant noise and wear will occur. The first damping part 7 can absorb and buffer the vibration energy transmitted from the first transmission component 31 to the second transmission component 32, making the power transmission smoother and more stable, and reducing collision wear and operating noise between components.

[0033] Specifically, when the external vibration source 5 is activated, the vibration it generates drives the first transmission component 31 to move. The first transmission component 31 transmits the vibration energy to the second transmission component 32 through the connecting component 4. Since the first end of the second transmission component 32 is constrained by the body 6, the second end can swing relative to the first end with the connecting component 4 as the boundary, thus driving the cleaning part 2 to rotate. During this process, the first shock-absorbing part 7 effectively buffers the vibration impact between components, making energy transmission smoother, noise lower, and significantly improving the durability of the entire transmission part 3.

[0034] In one specific embodiment of this disclosure, the first damping part 7 can be made of soft rubber or other materials known to those skilled in the art that can provide shock absorption and cushioning. The first damping part 7 can be disposed on the end face of the second transmission member 32 facing the first transmission member 31, and extends from the end face of the second transmission member 32 toward the first transmission member 31 until it contacts or has a gap with the end face of the first transmission member 31. When the first transmission member 31 drives the second transmission member 32 to move under the drive of an external vibration source, the first damping part 7 can effectively buffer the noise between the two.

[0035] In a preferred embodiment of this disclosure, the first damping portion 7 is configured to extend along a direction perpendicular to the first axis. It is understood that the first transmission member 31 and the second transmission member 32 extend along the direction of the first axis, which can also be understood as its length direction. The first damping portion 7 extends along a direction perpendicular to the first axis, that is, it extends along the width direction of the first transmission member 31 and the second transmission member 32. This reduces the contact area between the second transmission member 32 and the first transmission member 31 through the first damping portion 7, avoiding excessive friction between the two transmission members 32 due to the large area of ​​the first damping portion 7. While effectively buffering and absorbing noise generated by vibrations between the first transmission member 31 and the second transmission member 32, it also ensures the transmission of torque between the two transmission members.

[0036] Since the lengths of the first transmission member 31 and the second transmission member 32 are much greater than their widths, in one embodiment of this disclosure, at least two first damping portions 7 are provided, and these at least two first damping portions 7 are configured to be spaced apart along the first axis. That is, the contact area between the first transmission member 31 and the second transmission member 32 is not provided with a single first damping portion 7, but rather with multiple independent damping portions along the first axis, thereby forming a multi-level, continuous buffer area along the first axis. When relative displacement occurs between the first transmission member 31 and the second transmission member 32, the first damping portions 7 at different positions can undergo dispersed elastic deformation and absorb energy. This also avoids the aging, deformation, or wear that may occur with a single damping portion after long-term use, which could lead to a decrease in its damping performance. Providing multiple first damping portions 7 can significantly improve the reliability and durability of the entire transmission member 3 during long-term operation. The multiple damping parts distributed at intervals can also more evenly disperse and withstand impact forces from different directions, avoiding stress concentration in local areas. This helps protect the first transmission component 31, the second transmission component 32, and the connecting component 4 themselves, preventing them from breaking or being damaged due to excessive local stress.

[0037] In one specific embodiment of this disclosure, with the connector 4 as the boundary, at least one first damping part 7 is configured to be disposed on the side where the second end of the second transmission member 32 is located, and at least one first damping part 7 is configured to be disposed on the side where the first end of the second transmission member 32 is located. When the second transmission member 32 swings with the connector 4 as the fulcrum, the movement directions of its first end and second end are opposite. By distributing at least two first damping parts 7 on both sides of the connector 4, bidirectional balance buffering of the swing fulcrum can be achieved, making the swing process more balanced and controllable.

[0038] refer to Figure 3In one embodiment of this disclosure, a second shock absorber 8 is provided between the second transmission member 32 and the brush head body 1. The second shock absorber 8 is configured to surround the connecting member 4. Specifically, the second shock absorber 8 is disposed between the second transmission member 32 and the inner wall of the cavity of the brush head body 1, that is, on the side of the second transmission member 32 away from the first transmission member 31. The second shock absorber 8 can be an annular structure surrounding the connecting member 4, filling the gap between the second transmission member 32 and the inner wall of the cavity in a direction perpendicular to the first axis. In actual operation, the second transmission member 32 and the brush head body 1 undergo hard collision, which over time will wear down the inner wall of the cavity and may even cause the brush head body 1 to crack. The second shock absorber 8 avoids this hard contact, effectively protecting the brush head body 1 from wear caused by the movement of the internal transmission member, and extending the overall service life of the product. In addition, one side of the second transmission member 32 cooperates with the first transmission member 31 through the first shock absorber 7, and the other side cooperates with the brush head body 1 at the position of the connecting member 4 through the second shock absorber 8. This allows the first damping section 7 and the second damping section 8 to buffer the two sides of the second transmission member 32 in the thickness direction, and also to balance the movement of the second transmission member 32 within the cavity of the brush head body 1. Furthermore, the first damping section 7 and the second damping section 8 are spaced apart along the first axis, which can achieve the balance control of the second transmission member 32.

[0039] In a preferred embodiment of this disclosure, the second transmission member 32 is provided with a hinge hole, and the connector 4 is configured to pass through the hinge hole and be connected to the first transmission member 31 in a transmission manner. The second damping part 8 can extend into the hinge hole to buffer the noise caused by collision and friction between the connector 4 and the hinge hole.

[0040] refer to Figure 2 , Figure 3 The second transmission member 32 has a drive groove 10 at one end, and the cleaning part 2 has a flange 11 that engages with the drive groove 10. The third damping part 9 is configured to be located between the drive groove 10 and the flange 11. The drive groove 10 is configured as a forked groove with a tree branch shape, and the flange 11 is located on the end face of the cleaning part. The shapes of the drive groove 10 and the flange 11 are adapted to each other. When the second transmission member 32 drives the flange 11 to rotate through the drive groove 10, and thus drives the cleaning part 2 to rotate, the working noise between the drive groove 10 and the flange 11 can be significantly reduced due to the third damping part 9.

[0041] Furthermore, the third damping part 9 is configured to extend from the sidewall of the drive groove 10 along the first axis to the end face of the second transmission member 32. Radially, the third damping part 9 is disposed on the bottom wall of the drive groove 10, and during its engagement with the flange 11, it can buffer energy and reduce noise. Axially, it can reduce direct collisions between the end face of the second transmission member 32 and other rigid end faces, significantly reducing axial vibration noise and impact. By configuring the third damping part 9 to extend from the sidewall of the drive groove 10 along the first axis to the end face of the second transmission member 32, both radial and axial noise problems can be addressed simultaneously, simplifying the assembly process and improving production efficiency.

[0042] The third damping part 9 can be formed directly into the second transmission component 32 through a secondary injection molding process, creating an elastomer coating layer. This coating layer can contact the cleaning part 2 to achieve vibration damping transmission. The third damping part 9 can filter some of the vibration energy of the second transmission component 32, making the vibration of the cleaning part 2, which comes into contact with the user's mouth or skin, gentler, avoiding discomfort to the gums or skin caused by vibration, and reducing operating noise, effectively improving user comfort.

[0043] In one embodiment of this disclosure, the brush head body 1 is provided with a through hole through which the second transmission member 32 passes, and the third shock-absorbing part 9 is configured to extend from the end face of the second transmission member 32 to the position of the through hole. Specifically, a through hole is provided in the cavity of the brush head body 1, which allows the second end of the second transmission member 32 to pass through it for connection with the cleaning part 2. The third shock-absorbing part 9 continues from the edge of the second transmission member 32 along the outer wall of the second transmission member 32 in an axial direction close to the body 6 to form a covering section, which extends and fills the position of the through hole.

[0044] In one embodiment of this disclosure, a fourth shock-absorbing portion 12 is provided on the outer side of the brush head body 1. The fourth shock-absorbing portion 12 at least partially passes through the brush head body 1 and contacts the second transmission member 32. The main body of the fourth shock-absorbing portion 12 is fitted to or embedded in the outer wall of the brush head body 1. The fourth shock-absorbing portion 12 includes multiple protruding extensions that can penetrate the side wall of the brush head and cooperate with the second transmission member 32 to achieve further noise reduction.

[0045] In one specific embodiment of this disclosure, the extension is configured to be located on opposite sides of the second transmission member 32, corresponding to the third damping part 9. That is, the extension is positioned corresponding to the third damping part 9, which engages with one side of the second transmission member 32, while the extension engages with the other side of the second transmission member 32. This allows for buffering of both sides of the second transmission member 32 in the thickness direction via the extensions on the third damping part 9 and the fourth damping part 12, and also balances the movement of the second transmission member 32 within the brush head body 1 cavity.

[0046] In another embodiment of this disclosure, an electric toothbrush is also provided, comprising a body 6, a drive shaft, and a brush head as described above. The body 6 is the main structure of the electric toothbrush, and internally houses components such as a battery, control circuitry, and a motor. The body 6 is configured for gripping. The drive shaft, as a power output mechanism, is typically connected to a drive source such as a motor. The drive shaft is mounted on the body 6, and the brush head is configured to be connected to the body 6 via the drive shaft. The drive shaft is configured as an external vibration source 5 for the brush head, and the cleaning portion 2 of the brush head is configured to vibrate relative to the body 6.

[0047] The first transmission component 31 is provided with a keyway, so that one end of the power shaft can be configured with a spline shape that matches the keyway, and can be detachably connected to the first transmission component 31. The power shaft directly inputs the mechanical vibration generated by the motor inside the body 6 to the transmission part 3 of the brush head as the original power to drive the brush head.

[0048] The brush head and electric toothbrush provided in this disclosure are equipped with a multi-level shock absorption mechanism, which can significantly reduce the vibration of the body and the operating noise transmitted to the user's hand, effectively improving the user experience.

[0049] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this disclosure is not limited to the described order of actions, because according to this disclosure, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this disclosure.

[0050] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0051] The preferred embodiments disclosed above are merely illustrative of this disclosure. The optional embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this disclosure. These embodiments are selected and specifically described in this disclosure to better explain the principles and practical applications of this disclosure, thereby enabling those skilled in the art to better understand and utilize this disclosure. This disclosure is limited only by the claims and their full scope and equivalents.

Claims

1. A brush head configured to be mounted on a machine body, characterized in that, include: The brush head body (1) extends along a first axis and includes a sidewall defining a cavity; Cleaning part (2), which is attached to one end of the brush head body (1); The transmission part (3) is at least partially disposed in the cavity and includes a first transmission member (31) and a second transmission member (32). The first transmission member (31) and the second transmission member (32) are connected by a connector (4) and extend along the first axis. With the connecting member (4) as the boundary, the first end of the second transmission member (32) is configured to constrain the body (6), and the second end of the second transmission member (32) is configured to eccentrically engage with the cleaning part (2); when the first transmission member (31) is driven by an external vibration source (5), it drives the second transmission member (32) to swing with the connecting member (4) as the fulcrum, and the second end of the second transmission member (32) drives the cleaning part (2) to rotate under the constraint of the body (6); A first damping part (7) is provided between the first transmission member (31) and the second transmission member (32). The first damping part (7) is configured to contact the first transmission member (31) or / and the second transmission member (32).

2. The brush head according to claim 1, characterized in that, The first damping part (7) is configured to extend along a direction perpendicular to the first axis.

3. The brush head according to claim 2, characterized in that, The first damping part (7) is provided in at least two, and the at least two first damping parts (7) are configured to be distributed at intervals in the direction of the first axis.

4. The brush head according to claim 3, characterized in that, With the connector (4) as the boundary, at least one of the first shock absorbers (7) is configured to be located on the side where the second end of the second transmission member (32) is located, and at least one of the first shock absorbers (7) is configured to be located on the side where the first end of the second transmission member (32) is located.

5. The brush head according to claim 1, characterized in that, A second shock absorber (8) is provided between the second transmission member (32) and the brush head body (1), and the second shock absorber (8) is configured to surround the connector (4).

6. The brush head according to claim 1, characterized in that, The second transmission member (32) has a drive groove (10) at one end, and the cleaning part (2) has a flange (11) that is in transmission cooperation with the drive groove (10); a third shock absorber (9) is provided between the drive groove (10) and the flange (11).

7. The brush head according to claim 6, characterized in that, The third damping part (9) is configured to extend from the sidewall of the drive groove (10) along the first axis to the end face of the second transmission member (32).

8. The brush head according to claim 7, characterized in that, The brush head body (1) is provided with a through hole through which the second transmission member (32) passes, and the third shock absorber (9) is configured to extend to the position of the through hole at the end face of the second transmission member (32).

9. The brush head according to claim 1, characterized in that, A fourth shock absorber (12) is provided on the outside of the brush head body (1). The fourth shock absorber (12) passes through the brush head body (1) at least partially and contacts the second transmission member (32).

10. An electric toothbrush, characterized in that, include: The fuselage (6) is configured for gripping; A power shaft is mounted on the fuselage (6); The brush head is the brush head according to any one of claims 1-9, the brush head is configured to be connected to the body (6) via the power shaft, the power shaft is configured to be an external vibration source (5) of the brush head, and the cleaning part (2) of the brush head is configured to vibrate relative to the body (6).

Images