Vibration reduction toothbrush head and electric toothbrush

Abstract

The utility model relates to the field of electric toothbrushes, and provides a vibration reduction toothbrush head and an electric toothbrush, and the vibration reduction toothbrush head comprises a shell, a bristle seat and a vibration reduction assembly; the bristle seats are arranged at one end of the shell at intervals, a transmission part is coaxially arranged in the shell, and the transmission part is suitable for being connected with the bristle seats and a driving shaft of the toothbrush handle; the damping assembly is arranged between the transmission part and the shell, so that the transmission part is not in direct contact with the shell. The electric toothbrush comprises a vibration reduction toothbrush head and a toothbrush handle. According to the vibration reduction toothbrush head and the electric toothbrush, the transmission part is coaxially arranged in the shell through the vibration reduction assembly, so that the transmission part is not in direct contact with the shell, the transmission part is hung in the shell, the transmission part is prevented from impacting the shell, and the transmission part is high in vibration transmission efficiency and low in noise; the vibration reduction assembly is in soft contact with the transmission part and the shell, so that vibration of the transmission part cannot be transmitted to the shell, the oral cavity of a user cannot be numb, and the use experience is better.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrushes, and further to a vibration-damping toothbrush head and an electric toothbrush. Background Technology

[0002] Electric toothbrushes are frequently used in daily life for quick oral cleaning. These toothbrushes consist of a detachable handle and a brush head. The drive shaft of the handle drives the transmission component and bristle assembly inside the brush head to vibrate rapidly. Currently, the transmission component is directly located inside the brush head housing, with at least some direct contact between the component and the housing. During vibration, the component is highly susceptible to impact with the inner wall of the housing, significantly attenuating its vibration and resulting in low vibration transmission efficiency. This, in turn, leads to insufficient vibration of the bristle assembly. Furthermore, the vibration of the transmission component can even be transmitted to the housing, potentially causing numbness in the user's mouth. Moreover, because the transmission component vibrates at high frequency, the high-frequency impact on the housing generates significant noise, resulting in a poor user experience. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to provide a vibration-damping toothbrush head and an electric toothbrush. The transmission component is coaxially mounted inside the housing via a vibration-damping assembly, ensuring that the transmission component and the housing do not directly contact each other. This allows the transmission component to be suspended inside the housing, preventing it from impacting the housing. The transmission component has high vibration transmission efficiency and low noise. The vibration-damping assembly makes soft contact with the transmission component and the housing, preventing the vibration of the transmission component from being transmitted to the housing, thus preventing numbness in the user's mouth and providing a better user experience.

[0004] To achieve the above objectives, this utility model provides a vibration-damping toothbrush head, including a housing, a bristle holder, and a vibration-damping component;

[0005] The bristle holders are spaced apart at one end of the housing, and a transmission component is coaxially arranged inside the housing. The transmission component is adapted to connect the drive shaft of the bristle holders and the toothbrush handle.

[0006] The vibration damping component is disposed between the transmission component and the housing, so that the transmission component and the housing do not directly contact each other.

[0007] In some embodiments, the housing has a first channel and a second channel at its two ends, the transmission member is adapted to pass through the first channel and connect to the bristle seat, and the outer wall of the transmission member has a vibration damping groove at the position corresponding to the first channel.

[0008] The vibration damping assembly includes a first vibration damping member, which includes a first vibration damping section. The first vibration damping section is disposed between the bottom of the vibration damping groove and the inner wall of the first channel. The other parts of the transmission member located inside the housing are spaced apart from the inner wall of the housing.

[0009] In some embodiments, the first damping part is further provided with a plurality of damping protrusions, which are disposed on the outer ring of the first damping part and spaced apart along the axial direction of the transmission member.

[0010] In some embodiments, the end of the first channel away from the bristle holder is further provided with a first abutting wall, and the side of the vibration damping groove away from the bristle holder is provided with a second abutting wall. The first vibration damping member further includes a second vibration damping part, which is disposed on the side of the first vibration damping part away from the bristle holder and is located between the second abutting wall of the vibration damping groove and the first abutting wall of the first channel.

[0011] In some embodiments, a third abutment wall is provided at one end of the first channel near the bristle holder, and a fourth abutment wall is provided on the side of the bristle holder near the transmission member, with the third abutment wall and the fourth abutment wall spaced apart from each other.

[0012] The first vibration damping member further includes a third vibration damping part, which is disposed at one end of the first vibration damping part near the bristle seat and is located between the third abutment wall and the fourth abutment wall, so that the bristle seat and the housing do not directly contact each other.

[0013] In some embodiments, a second damping member is also included, which is disposed at the end of the transmission member away from the bristle holder. The second damping member includes a fourth damping portion disposed between the outer side wall of the transmission member and the inner side wall of the housing.

[0014] In some embodiments, a bushing is provided at the end of the housing away from the bristle holder. The bushing is disposed on the side of the transmission member away from the bristle holder, and the bushing is adapted to be fixedly connected to the connecting seat of the toothbrush handle.

[0015] The transmission component has a fifth abutment wall at the end away from the bristle seat, and the bushing has a sixth abutment wall at the end near the bristle seat. The second damping component also includes a fifth damping part, which is disposed at the end of the fourth damping part near the bushing and is located between the fifth abutment wall and the sixth abutment wall, so that the transmission component and the bushing do not directly contact each other.

[0016] In some embodiments, a third damping member is also included, which connects the ends of the first damping member and the second damping member that are close to each other, such that the damping assembly is disposed outside all parts of the transmission member located inside the housing, so that all parts of the transmission member located inside the housing are not in direct contact with the housing.

[0017] In some embodiments, the transmission component includes a transmission rod and a rigid rubber coating. The rigid rubber coating is fixedly disposed on the outside of the transmission rod and located opposite to it inside the housing. The transmission rod is adapted to extend out of a first channel in the housing and connect to the bristle seat. The first damping component and the second damping component are respectively disposed at both axial ends of the rigid rubber coating.

[0018] According to another aspect of this application, an electric toothbrush is further provided, including any of the vibration-damping toothbrush heads and toothbrush handles of the above preferred embodiments. The drive shaft of the toothbrush handle is adapted to pass through the second channel of the housing and be fixedly connected to the transmission component. The connecting seat of the toothbrush handle is adapted to be fixedly connected to the bushing inside the housing.

[0019] Compared with the prior art, the vibration-damping toothbrush head and electric toothbrush provided by this utility model have at least one of the following beneficial effects:

[0020] 1. The transmission component is coaxially mounted inside the housing via a vibration damping assembly, ensuring that the transmission component does not directly contact the housing. This allows the transmission component to be suspended inside the housing, preventing it from impacting the housing. This results in high vibration transmission efficiency and low noise. The vibration damping assembly makes soft contact between the transmission component and the housing, preventing the vibration of the transmission component from being transmitted to the housing. This also prevents numbness in the user's mouth and provides a better user experience.

[0021] 2. The first damping part can solve the direct contact between the outer wall of the transmission component and the inner wall of the housing, and can avoid radial impact and vibration transmission between the transmission component and the housing, so that the transmission component and the housing do not have direct radial contact. The outer ring of the first damping part is provided with several spaced damping protrusions to reduce the contact area between the first damping part and the inner wall of the first channel. This can effectively solve the problem of excessive contact area between the first damping part and the inner wall of the first channel. At the same time, the gaps between the several damping protrusions can also provide a larger deformation space for the first damping part, enhance the elasticity of the first damping part, and make the first damping part have a stronger damping effect.

[0022] 3. A second damping part is provided between the second abutting wall of the damping groove and the first abutting wall of the first channel. The second damping part can prevent the axial impact and vibration transmission between the transmission component and the housing, so that the transmission component and the housing do not directly contact each other axially.

[0023] 4. A third damping part is provided between the third abutting wall of the first channel and the fourth abutting wall of the bristle seat. The third damping part can effectively reduce the risk of contact between the third abutting wall and the fourth abutting wall when the bristle seat vibrates, and avoid mutual impact and vibration transmission between the third abutting wall and the fourth abutting wall.

[0024] 5. The fourth vibration damping part is located between the outer wall of the transmission component end and the inner wall of the housing, which can effectively reduce the risk of impact between the end of the transmission component away from the bristle seat and the inner wall of the housing. The transmission component does not contact the housing, and the vibration damping effect of the transmission component is better.

[0025] 6. The fifth vibration damping part is located between the fifth abutment wall of the transmission component and the sixth abutment wall of the bushing, avoiding direct contact and vibration transmission between the bushing and the transmission component. This ensures that the transmission component does not directly contact the housing and the bushing, resulting in less vibration attenuation and higher vibration transmission efficiency. Attached Figure Description

[0026] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0027] Figure 1 This is a cross-sectional view of a vibration-damping toothbrush head;

[0028] Figure 2 It is a cross-sectional view of the transmission component;

[0029] Figure 3 This is a diagram showing the location of the first vibration damper;

[0030] Figure 4 This is a structural diagram of the second vibration damping section;

[0031] Figure 5 This is a diagram showing the location of the second vibration damper;

[0032] Figure 6 This is a structural diagram of the fifth vibration damping section.

[0033] Explanation of icon numbers:

[0034] Housing 1, transmission component 11, vibration damping groove 111, second abutment wall 1111, transmission rod 112, rigid rubber coating 113, fixing block 1131, fifth abutment wall 1132, first channel 12, first abutment wall 121, third abutment wall 122, second channel 13, bushing 14, sixth abutment wall 141.

[0035] 2. Brush base 2; 21. Fourth abutment wall 2; 22. Soft shell of base body 2.

[0036] Vibration damping assembly 3, first vibration damper 31, first vibration damping section 311, vibration damping protrusion 312, second vibration damping section 313, second vibration damper 32, fourth vibration damping section 321, fixing groove 3211, fifth vibration damping section 322.

[0037] Drive shaft 4, connecting seat 5. Detailed Implementation

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0039] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0040] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0041] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

[0043] refer to Figure 1 This utility model provides a vibration-damping toothbrush head, including a housing 1, a bristle holder 2, and a vibration-damping component 3; the bristle holder 2 is spaced apart at one end of the housing 1, and a transmission component 11 is coaxially arranged inside the housing 1, the transmission component 11 being adapted to connect the bristle holder 2 and the drive shaft 4 of the toothbrush handle; the vibration-damping component 3 is disposed between the transmission component 11 and the housing 1, so that the transmission component 11 and the housing 1 do not directly contact each other.

[0044] In this embodiment, the transmission component 11 is coaxially disposed inside the housing 1 via the vibration damping component 3, so that the transmission component 11 and the housing 1 do not directly contact each other. This allows the transmission component 11 to be suspended inside the housing 1, preventing the transmission component 11 from impacting the housing 1. The transmission component 11 has high vibration transmission efficiency and low noise. The vibration damping component 3 makes soft contact with the transmission component 11 and the housing 1, so that the vibration of the transmission component 11 will not be transmitted to the housing 1, and the user's mouth will not feel numb, resulting in a better user experience.

[0045] Specifically, refer to Figure 2 and Figure 4 The housing 1 and the bristle holder 2 are spaced apart, with a gap between the end of the housing 1 and the end of the bristle holder 2, preventing the vibration of the bristle holder 2 from being transmitted to the housing 1. The connection between the bristle holder 2 and the drive shaft 4 of the toothbrush handle is directly through a transmission component 11. The transmission component 11 is at least partially located inside the housing 1. The housing 1 has a first channel 12 and a second channel 13 at its two axial ends, respectively. The transmission component 11 inside the housing 1 is adapted to pass through the first channel 12 and connect to the bristle holder 2. The drive shaft 4 passes through the second channel 13 and connects to the end of the transmission component 11 away from the bristle holder 2. The end of the transmission component 11 away from the bristle holder 2 has a connecting groove, into which the drive shaft 4 is adapted to be inserted and connected to the transmission component 11. Because the transmission component 11 is located inside the housing 1, and may transmit the vibration of the drive shaft 4 to the bristle holder 2, a corresponding gap needs to be left between the transmission component 11 and the housing 1 to prevent the transmission component 11 from colliding or rubbing against the housing 1 during vibration, which would cause vibration loss and noise. Therefore, this application provides a vibration damping assembly 3 between the transmission component 11 and the housing 1, suspending the transmission component 11 inside the housing 1, meaning the transmission component 11 does not directly contact the housing 1. (Reference) Figure 3 The vibration damping component 3 is disposed between the transmission component 11 and the housing 1. Because the vibration damping component 3 has a certain elasticity, the transmission component 11 and the housing 1 are partially in soft contact, while the other part is left with a gap between the transmission component 11 and the housing 1, so that the transmission component 11 and the housing 1 do not directly contact each other.

[0046] More specifically, in this embodiment, the cross-section of the housing 1 gradually decreases along the axial direction of the housing 1 from the end away from the bristle holder 2 to the end closer to the bristle holder 2, and the transmission component 11 is coaxially disposed inside the housing 1. Therefore, in this embodiment, the gap between the transmission component 11 and the housing 1 gradually increases from the end closer to the bristle holder 2 to the end away from the bristle holder 2. The maximum and most likely contact position between the transmission component 11 and the housing 1 is at the position corresponding to the first channel 12 of the housing 1 and the transmission component 11. Eliminating the contact probability at this position can achieve the gap setting between the transmission component 11 and other positions of the housing 1. Therefore, the vibration damping component 3 includes a first vibration damping component 31, which is disposed between the first channel 12 of the housing 1 and the transmission component 11. The first vibration damping component 31 is made of soft rubber material, which will not be described in detail in this application, as long as it has elastic deformation and vibration damping functions. Specifically, when the drive shaft 4 of the toothbrush handle is inserted into the connecting groove of the transmission component 11, the drive shaft 4 applies an axial force to the transmission component 11. The first damping component 31, which is wrapped around the outside of the transmission component 11, is prone to sliding on the transmission component 11, causing a deviation in the connection position between the first damping component 31 and the housing 1, thus preventing the transmission component 11 from achieving soft contact with the first channel 12. Therefore, the transmission component 11 has a damping groove 111 at the corresponding position of the first channel 12, and the first damping component 31 is disposed within the damping groove 111 to prevent relative sliding of the first damping component 31 on the transmission component 11, which would cause the first damping component 31 to lose its original function, resulting in misalignment or abnormal noise of the transmission component 11. Preferably, the first damping component 31 includes a first damping part 311, which is disposed between the bottom of the damping groove 111 and the inner wall of the first channel 12. The other parts of the transmission component 11 located inside the housing 1 are spaced apart from the inner wall of the housing 1. Specifically, the first damping part 311 is disposed in the damping groove 111 and abuts against the inner sidewall of the first channel 12. The first damping part 311 can solve the direct contact between the outer sidewall of the transmission component 11 and the inner sidewall of the housing 1, and can avoid radial impact and vibration transmission between the transmission component 11 and the housing 1, so that the transmission component 11 and the housing 1 do not have direct radial contact.

[0047] It is worth noting that the first damping part 311 of the first damping member 31 solves the problem of radial impact and vibration transmission between the outer wall of the transmission member 11 and the inner wall of the housing 1. The shape of the housing 1 can also be a cylinder with a uniform cross-section, or other shapes. This application does not make further limitations here. The first damping member 31 is disposed in soft contact with the first channel 12 of the transmission member 11 and the housing 1 near the end of the bristle seat 2, so that the vibration between the transmission member 11 and the housing 1 is not transmitted.

[0048] Preferably, the first damping part 311 is further provided with a plurality of damping protrusions 312, which are disposed on the outer ring of the first damping part 311 and spaced apart along the axial direction of the transmission member 11.

[0049] In this embodiment, the outer ring of the first damping part 311 is provided with a plurality of damping protrusions 312 spaced apart, so as to reduce the contact area between the first damping part 311 and the inner wall of the first channel 12. This can effectively solve the problem of excessive contact area between the first damping part 311 and the inner wall of the first channel 12. At the same time, the gap between the plurality of damping protrusions 312 can also provide the first damping part 311 with a larger deformation space, enhance the elastic effect of the first damping part 311, and make the first damping part 311 have a stronger damping effect.

[0050] Specifically, the axial length of the inner wall of the first channel 12 is relatively long, resulting in an excessively large contact area between the inner wall of the first channel 12 and the transmission component 11. This means that the first damping part 311 may not be able to completely buffer the vibration of the transmission component 11, and some of the vibration of the transmission component 11 will still reach the housing 1 through the first damping part 311. Although this vibration is very slight, it is still not negligible. Therefore, this application provides a plurality of spaced damping protrusions 312 on the outer ring of the first damping part 311. The outer ring of the damping protrusions 312 contacts the inner wall of the first channel 12, thereby reducing the contact area between the first damping part 311 and the inner wall of the first channel 12. This effectively solves the problem of excessive contact area between the first damping part 311 and the inner wall of the first channel 12. At the same time, the gaps between the damping protrusions 312 can also provide a larger deformation space for the first damping part 311, enhancing the elasticity of the first damping part 311 and making the first damping part 311 have a stronger damping effect.

[0051] Further, refer to Figure 3 The first channel 12 is provided with a first abutting wall 121 at the end away from the bristle seat 2, and the vibration damping groove 111 is provided with a second abutting wall 1111 on the side away from the bristle seat 2. The first vibration damping member 31 also includes a second vibration damping part 313, which is disposed on the side of the first vibration damping part 311 away from the bristle seat 2 and is located between the second abutting wall 1111 of the vibration damping groove 111 and the first abutting wall 121 of the first channel 12.

[0052] In this embodiment, a second damping part 313 is provided between the second abutting wall 1111 of the damping groove 111 and the first abutting wall 121 of the first channel 12. The second damping part 313 can prevent the axial impact and vibration transmission between the transmission member 11 and the housing 1, so that the transmission member 11 and the housing 1 do not directly contact each other axially.

[0053] Specifically, the first abutting wall 121 is located at the end of the first channel 12 away from the bristle holder 2 and is located inside the housing 1. The second abutting wall 1111 is located on the side of the damping groove 111 away from the bristle holder 2 and is located inside the housing 1. When the drive shaft 4 of the toothbrush handle is inserted into the connecting groove of the transmission component 11, the drive shaft 4 will give the transmission component 11 an axial force, causing the transmission component 11 to be squeezed towards the side closer to the bristle holder 2. At this time, the second abutting wall 1111 of the damping groove 111 is very likely to directly collide with the first abutting wall 121 of the first channel 12 and transmit vibration. Therefore, a second damping part 313 needs to be provided between the side wall of the damping groove 111 of the transmission component 11 and the end of the first channel 12. It is worth noting that the second damping part 313 can also be understood as the end of the first damping part 311 away from the brush seat 2 extending radially along the housing 1 away from the transmission member 11, and the second damping part 313 does not exceed the damping groove 111 of the transmission member 11, that is, there is also a gap between the end of the second damping part 313 and the inner wall of the housing 1.

[0054] Furthermore, the first channel 12 is provided with a third abutment wall 122 at one end near the bristle holder 2, and the bristle holder 2 is provided with a fourth abutment wall 21 on the side near the transmission member 11. The third abutment wall 122 and the fourth abutment wall 21 are spaced apart from each other. The first damping member 31 also includes a third damping part, which is disposed at one end of the first damping part 311 near the bristle holder 2 and is located between the third abutment wall 122 and the fourth abutment wall 21, so that the bristle holder 2 and the housing 1 do not directly contact each other.

[0055] In this embodiment, a third damping part is provided between the third abutting wall 122 of the first channel 12 and the fourth abutting wall 21 of the bristle seat 2. The third damping part can effectively reduce the risk of contact between the third abutting wall 122 and the fourth abutting wall 21 when the bristle seat 2 vibrates, and avoid mutual collision and vibration transmission between the third abutting wall 122 and the fourth abutting wall 21.

[0056] Specifically, the third abutment wall 122 is located at the end of the first channel 12 near the bristle holder 2 and opposite to the outer end of the housing 1, and the fourth abutment wall 21 is located on the side of the bristle holder 2 near the transmission member 11. A gap is left between the third abutment wall 122 and the fourth abutment wall 21, so that the bristle holder 2 and the housing 1 are separately set, and the vibration of the bristle holder 2 will not be transmitted to the housing 1, thus avoiding vibration and numbness in the housing 1. The function of the third vibration damping part is to reduce the risk of contact between the third abutment wall 122 and the fourth abutment wall 21 when the bristle holder 2 vibrates, avoid mutual impact and vibration transmission between the third abutment wall 122 and the fourth abutment wall 21, and ensure the segmented structure of the bristle holder 2 and the housing 1.

[0057] It is worth noting that the first damping member 31 may not have a third damping part; sufficient gaps are sufficient between the third abutment wall 122 and the fourth abutment wall 21. Simultaneously, a soft shell 22 is provided on the outer side of the bristle holder 2. The soft shell 22 wraps around the outside of the bristle holder 2 and exposes the bristles. The soft shell 22 makes soft contact with the end of the housing 1 near the bristle holder 2 and covers the gap between the bristle holder 2 and the housing 1, making the toothbrush head more aesthetically pleasing and waterproof. Furthermore, the soft contact between the soft shell 22 and the housing 1 prevents vibrations of the toothbrush holder from being transmitted to the housing 1 through the soft shell 22, thus preventing vibrations in the housing 1. The third damping part may also be provided on the soft shell 22, which extends radially inward along the housing 1 to form the third damping part. The third damping part may be directly connected to the first damping part 311 or not; that is, the first damping member 31 and the soft shell 22 may be integrally formed or separately. This application does not impose further limitations, and all of these are within the scope of protection of this application. Specifically, the outer side of the housing 1 near the bristle holder 2 has a placement groove, and the portion of the soft base 22 extending beyond the bristle holder 2 is fitted into the placement groove, making the overall shape of the toothbrush head streamlined and more aesthetically pleasing. The soft base 22 is in soft contact with the housing 1; that is, when the bristle holder 2 vibrates, the soft base 22 deforms to accommodate the vibration of the bristle holder 2, without transmitting the vibration to the housing 1. Furthermore, the soft base 22 precisely covers the gap between the bristle holder 2 and the housing 1, preventing water from seeping into the gap. The soft base 22 is made of soft rubber, which is not further limited in this application.

[0058] Further, refer to Figure 5 and Figure 6 It also includes a second damping member 32, which is disposed at the end of the transmission member 11 away from the brush seat 2. The second damping member 32 includes a fourth damping part 321, which is disposed between the outer side wall of the transmission member 11 and the inner side wall of the housing 1.

[0059] In this embodiment, the fourth damping part 321 is disposed between the outer side wall of the end of the transmission member 11 and the inner side wall of the housing 1, which can effectively reduce the impact risk between the end of the transmission member 11 away from the brush seat 2 and the inner side wall of the housing 1. The transmission member 11 does not contact the housing 1, and the damping effect of the transmission member 11 is better.

[0060] Specifically, the cross-section of the housing 1 gradually decreases along the axial direction of the housing 1 from the end away from the bristle seat 2 to the end closer to the bristle seat 2. Theoretically, the gap between the end of the transmission member 11 away from the bristle seat 2 and the inner wall of the housing 1 is sufficient. However, during the process of connecting the transmission member 11 to the drive shaft 4, the end of the transmission member 11 away from the bristle seat 2 may become misaligned, causing the transmission member 11 to impact the housing 1. The fourth damping part 321 can avoid these risks, so the fourth damping part 321 mainly plays a preventive role. The outer wall of the transmission member 11 is also provided with a fixing block 1131, and the fourth damping part 321 of the second damping member 32 is also provided with a fixing groove 3211. The fixing block 1131 is abutted and fixed in the fixing groove 3211, so that the transmission member 11 and the fourth damping part 321 are fixedly installed. Of course, the positions of the fixing block 1131 and the fixing groove 3211 can be interchanged, and multiple fixing blocks 1131 and fixing grooves 3211 can be set, as long as the second damping member 32 can be fixedly set on the outer wall of the transmission member 11.

[0061] It is worth noting that the transmission component 11 includes a transmission rod 112 and a rigid rubber coating 113. The rigid rubber coating 113 is fixedly disposed on the outside of the transmission rod 112 and located relatively inside the housing 1. The transmission rod 112 is adapted to extend out of the first channel 12 of the housing 1 and connect to the brush holder 2. The first damping component 31 and the second damping component 32 are respectively disposed at the axial ends of the rigid rubber coating 113. The rigid rubber coating 113 is disposed on the outer part of the transmission rod 112 located in the housing 1. The rigid rubber coating 113 is formed on the outer side of the transmission rod 112 and is any one of the hard materials POM, PC, and PEEK. Preferably, the rigid rubber coating 113 is POM. POM is also called acetal alloy. Acetal alloy is easy to process and has the characteristics of good rigidity, good toughness, and good wear resistance. It also has a low coefficient of friction and good geometric stability. The transmission rod 112 is preferably made of metal. A vibration damping groove 111 is disposed on the outer wall of the transmission rod 112, and a fixing block 1131 is disposed on the outer wall of the rigid rubber coating 113. One end of the rigid rubber coating 113 extends to the fifth abutment wall 1132 of the vibration damping groove 111, and the second vibration damping part 313 connects the fifth abutment wall 1132 of the vibration damping groove 111 and the end of the rigid rubber coating 113. The other end of the rigid rubber coating 113 extends beyond the end of the transmission rod 112 away from the bristle holder 2 and is provided with a connecting groove, and the drive shaft 4 is adapted to be fixedly connected to the connecting groove. In a modified embodiment, the transmission component 11 can also be a whole, with the transmission component 11 coaxially disposed with the housing 1 and a gap left between the inner sidewalls of the transmission component 11, and the transmission component 11 directly drives the drive shaft 4 that connects the bristle holder 2 and the toothbrush handle. In this case, the transmission component 11 is preferably metal, and it can also be a rigid material such as POM. The difference between this embodiment and the previous embodiment is that the material of the transmission component 11 in this embodiment is one, that is, the transmission component 11 is a whole.

[0062] Furthermore, the end of the housing 1 away from the bristle holder 2 is also provided with a bushing 14. The bushing 14 is located on the side of the transmission member 11 away from the bristle holder 2. The bushing 14 is adapted to be fixedly connected to the connecting seat 5 of the toothbrush handle. The end of the transmission member 11 away from the bristle holder 2 is provided with a fifth abutment wall 1132, and the end of the bushing 14 near the bristle holder 2 is provided with a sixth abutment wall 141. The second damping member 32 also includes a fifth damping part 322. The fifth damping part 322 is located at the end of the fourth damping part 321 near the bushing 14 and is located between the fifth abutment wall 1132 and the sixth abutment wall 141, so that the transmission member 11 and the bushing 14 do not directly contact each other.

[0063] In this embodiment, the fifth damping part 322 is disposed between the fifth abutment wall 1132 of the transmission member 11 and the sixth abutment wall 141 of the bushing 14, so as to avoid direct contact and vibration transmission between the bushing 14 and the transmission member 11, so that the transmission member 11 does not directly contact the housing 1 and the bushing 14, the vibration attenuation of the transmission member 11 is less, and the vibration transmission efficiency is higher.

[0064] Specifically, the connecting seat 5 of the toothbrush handle is adapted to be fixedly connected to the bushing 14 inside the housing 1, so that the drive shaft 4 of the toothbrush handle passes through the opening at one end of the housing 1 and the bushing 14 and is connected to the connecting groove of the transmission component 11, so that the transmission component 11 and the drive shaft 4 are rigidly connected, and the drive shaft 4 directly transmits vibration to the transmission component 11. In this application, a mounting block is provided on the outside of the transmission component 11, and a mounting groove is provided on the bushing 14, and the mounting block is fixedly installed in the mounting groove. The connection method between the bushing 14 and the connecting seat 5 can also be other methods such as snap-fit ​​and locking. This application does not further limit the connection method between the bushing 14 and the connecting seat 5. During the installation of the bushing 14 and the connecting seat 5 of the toothbrush handle, the connecting seat 5 may drive the bushing 14 to move axially and abut against the transmission component 11. Therefore, a fifth damping part 322 needs to be provided between the fifth abutment wall 1132 of the transmission component 11 and the sixth abutment wall 141 of the bushing 14 to eliminate the risk of abutment or impact. The fifth damping part 322 can also be understood as the fourth damping part 321 extending radially inward along the housing 1 from the end away from the bristle holder 2. The fifth damping part 322 also has an opening in the middle, which facilitates the passage of the drive shaft 4. In this application, the fifth damping part 322 is sleeved on the end of the rigid rubber 113 away from the bristle holder 2.

[0065] It is worth noting that a third damping element is also included. This third damping element connects the ends of the first damping element 31 and the second damping element 32 that are close to each other, so that the damping assembly 3 is disposed outside all parts of the transmission member 11 located inside the housing 1, ensuring that all parts of the transmission member 11 located inside the housing 1 do not directly contact the housing 1. In this embodiment, the third damping element connects the ends of the first damping element 31 and the second damping element 32 that are close to each other, and is disposed outside the portion of the transmission member 11 between the first damping element 31 and the second damping element 32. This allows the third damping element, the first damping element 31, and the second damping element 32 to enclose all parts of the transmission member 11 located inside the housing 1, ensuring that the transmission member 11 never directly contacts the housing 1, thus improving safety performance. It is also worth noting that in modified embodiments, any two or three of the first damping element 31, the second damping element 32, and the third damping element can also be integrated as a single unit.

[0066] Furthermore, this application provides an electric toothbrush, including any of the vibration-damping toothbrush heads and toothbrush handles in the above preferred embodiments. The drive shaft 4 of the toothbrush handle is adapted to pass through the second hole 13 of the housing 1 and be fixedly connected to the transmission component 11. The connecting seat 5 of the toothbrush handle is adapted to be fixedly connected to the bushing 14 inside the housing 1.

[0067] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A vibration-damping toothbrush head, characterized in that, Includes housing, brush holder, and vibration damping components; The bristle holders are spaced apart at one end of the housing, and a transmission component is coaxially arranged inside the housing. The transmission component is adapted to connect the drive shaft of the bristle holders and the toothbrush handle. The vibration damping component is disposed between the transmission component and the housing, so that the transmission component and the housing do not directly contact each other; The housing has a first channel and a second channel at its two ends respectively. The transmission component is adapted to pass through the first channel and connect to the bristle seat. The outer wall of the transmission component has a vibration damping groove at the position corresponding to the first channel. The vibration damping assembly includes a first vibration damping member, which includes a first vibration damping part. The first vibration damping part is disposed between the bottom of the vibration damping groove and the inner wall of the first channel. The portion of the transmission member located inside the housing is spaced apart from the inner wall of the housing. The transmission component includes a transmission rod and a rigid rubber coating. The rigid rubber coating is fixedly disposed on the outside of the transmission rod and located opposite to the inside of the housing. The transmission rod is adapted to extend out of the first channel of the housing and connect to the bristle holder.

2. The vibration-damping toothbrush head according to claim 1, characterized in that, The first vibration damping part is also provided with a plurality of vibration damping protrusions, which are disposed on the outer ring of the first vibration damping part and spaced apart along the axial direction of the transmission component.

3. A vibration-damping toothbrush head according to claim 2, characterized in that, The first channel is provided with a first abutting wall at the end away from the bristle seat, and the vibration damping groove is provided with a second abutting wall on the side away from the bristle seat. The first vibration damping member also includes a second vibration damping part, which is disposed on the side of the first vibration damping part away from the bristle seat and is located between the second abutting wall of the vibration damping groove and the first abutting wall of the first channel.

4. A vibration-damping toothbrush head according to claim 3, characterized in that, The first channel is provided with a third abutting wall at one end near the bristle holder, and the bristle holder is provided with a fourth abutting wall on the side near the transmission member. The third abutting wall and the fourth abutting wall are spaced apart from each other. The first vibration damping member further includes a third vibration damping part, which is disposed at one end of the first vibration damping part near the bristle seat and is located between the third abutment wall and the fourth abutment wall, so that the bristle seat and the housing do not directly contact each other.

5. A vibration-damping toothbrush head according to any one of claims 1-4, characterized in that, It also includes a second vibration damping member, which is disposed at the end of the transmission member away from the bristle seat. The second vibration damping member includes a fourth vibration damping part, which is disposed between the outer side wall of the transmission member and the inner side wall of the housing.

6. A vibration-damping toothbrush head according to claim 5, characterized in that, The housing is also provided with a bushing at the end away from the bristle holder. The bushing is located on the side of the transmission member away from the bristle holder and is adapted to be fixedly connected to the connecting seat of the toothbrush handle. The transmission component has a fifth abutment wall at the end away from the bristle seat, and the bushing has a sixth abutment wall at the end near the bristle seat. The second damping component also includes a fifth damping part, which is disposed at the end of the fourth damping part near the bushing and is located between the fifth abutment wall and the sixth abutment wall, so that the transmission component and the bushing do not directly contact each other.

7. A vibration-damping toothbrush head according to claim 6, characterized in that, It also includes a third damping component, which connects the ends of the first damping component and the second damping component that are close to each other, such that the damping assembly is disposed outside all parts of the transmission component located inside the housing, so that all parts of the transmission component located inside the housing are not in direct contact with the housing.

8. A vibration-damping toothbrush head according to claim 5, characterized in that, The first damping member and the second damping member are respectively disposed at both ends of the rigid rubber coating.

9. An electric toothbrush, characterized in that, The toothbrush includes a vibration-damping toothbrush head and a toothbrush handle as described in any one of claims 1-8, wherein the drive shaft of the toothbrush handle is adapted to pass through a second hole in the housing and be fixedly connected to the transmission component, and the connecting seat of the toothbrush handle is adapted to be fixedly connected to a bushing inside the housing.

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