Toothbrush head noise reduction elastic piece and toothbrush head

Abstract

The utility model provides a toothbrush head noise reduction elastic piece and a toothbrush head. The toothbrush head comprises the toothbrush head noise reduction elastic piece. The toothbrush head noise reduction elastic piece comprises an elastic piece middle section, a fixing block on the left side of the elastic piece middle section is used for fixing the whole toothbrush head noise reduction elastic piece, and an elastic piece lower section and an elastic piece upper section are arranged at the upper end and the lower end of the elastic piece middle section respectively, so that stress at the upper end and the lower end of the elastic piece middle section is balanced, and elasticity of the elastic piece lower section and the elastic piece upper section can be better exerted. Connection of the fixing blocks can be firmer through pressure at the upper end and the lower end; the elastic piece upper section comprises a deformation body and extrusion parts, an upper deformation groove is formed in the left side of the deformation body, and when the extrusion part located on the right side is interacted by the driving shaft, the deformation body can be driven to deform towards the upper deformation groove, so that counter-acting force is generated to abut the driving shaft against the side wall of the mounting hole; therefore, noise caused by back-and-forth collision of the upper end of the driving shaft in the mounting hole is avoided, and vibration transmission loss of the driving shaft can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of toothbrushes, in particular to a noise reduction elastic sheet for a toothbrush head and a toothbrush head. Background Art

[0002] An electric toothbrush generally includes an electric handle and a toothbrush head. The electric handle can be repeatedly charged, and the drive shaft at its front end is inserted into the toothbrush head, so that the toothbrush head obtains functions such as swinging and vibrating. The toothbrush head is used as a consumable for cleaning the oral cavity. Traditional toothbrush heads are generally composed of plastic parts and metal parts. In recent years, with the improvement of people's environmental protection awareness, fully bamboo toothbrush heads have a growing market share due to their advantages of small environmental pollution, fast degradation, cheap materials, and easy availability.

[0003] The utility model patent of the applicant, a fully bamboo toothbrush head with an internal elastic sheet (CN221265489U), mainly includes a toothbrush head body and an elastic sheet arranged inside the toothbrush head body. An installation hole is provided in the toothbrush head body, and the elastic sheet includes a movable section. The movable section resists and clamps the lower end of the drive shaft by deformation; however, through market feedback, it is found that in the initial stage of using the toothbrush head, the upper end of the drive shaft of the electric handle is closely matched with the upper end of the installation hole to transmit the vibration of the drive shaft; in the middle and later stages of using the toothbrush head, the installation hole will expand due to vibration. At this time, the cooperation between the upper end of the drive shaft and the installation hole is relatively loose, and the vibration at the upper end of the drive shaft is converted into hitting back and forth in the installation hole, resulting in noise and causing loss of vibration transmission of the drive shaft. Content of the Utility Model

[0004] The problem to be solved by the utility model is to provide a noise reduction elastic sheet for a toothbrush head that can reduce the vibration generated at the upper end of the drive shaft and reduce the loss of vibration transmission of the drive shaft, and a toothbrush head with such a noise reduction elastic sheet for a toothbrush head.

[0005] The technical solution adopted by the utility model to solve the above problems is as follows: A noise reduction elastic sheet for a toothbrush head includes:

[0006] An elastic sheet middle section, wherein the elastic sheet middle section includes a fixed block arranged on the left side;

[0007] An elastic sheet lower section, wherein the elastic sheet lower section is arranged below the elastic sheet middle section; the elastic sheet lower section resists the lower end of the drive shaft by deformation; and

[0008] An upper section of a shrapnel, wherein the upper section of the shrapnel abuts against the upper end of the drive shaft through deformation so as to abut the upper end of the drive shaft against the side wall of the mounting hole; the upper section of the shrapnel includes a deformable body and a pressing portion disposed on the right side of the deformable body; the pressing portion acts on the drive shaft; the left side of the deformable body has an upper deformation groove, and when the drive shaft interacts with the pressing portion, the deformable body deforms towards the upper deformation groove; the upper section of the shrapnel is disposed above the middle section of the shrapnel so as to balance the forces on the upper and lower ends of the middle section of the shrapnel.

[0009] Compared with the prior art, the toothbrush head noise reduction shrapnel of the present utility model includes a middle section of the shrapnel. The fixing block on the left side of the middle section of the shrapnel is used to fix the entire toothbrush head noise reduction shrapnel. A lower section of the shrapnel and an upper section of the shrapnel are respectively provided at the upper and lower ends of the middle section of the shrapnel. The two abut against the upper and lower ends of the drive shaft through deformation respectively. This setting enables the forces on the upper and lower ends of the middle section of the shrapnel to be balanced, which is beneficial to better exert the elastic forces of the lower section of the shrapnel and the upper section of the shrapnel, and can also make the connection of the fixing block more firm through the pressures at the upper and lower ends; the upper section of the shrapnel includes a deformable body and a pressing portion, and the left side of the deformable body has an upper deformation groove. When the pressing portion on the right side interacts with the drive shaft, it can drive the deformable body to deform towards the upper deformation groove so as to generate a reaction force to abut the drive shaft against the side wall of the mounting hole, thereby avoiding the drive shaft from hitting back and forth in the mounting hole to generate noise, and also reducing the vibration transmission loss of the drive shaft.

[0010] According to an embodiment of the present utility model, the deformable body includes an upper bending arc section disposed at the lower end; the upper bending arc section is disposed at the junction of the deformable body and the fixing block.

[0011] According to an embodiment of the present utility model, the pressing portion is set to gradually thicken from bottom to top so that when the drive shaft is inserted, the deformable body bends along the upper bending arc section.

[0012] According to an embodiment of the present utility model, the pressing portion includes a plurality of serrated blocks arranged from bottom to top; the thicknesses of the plurality of serrated blocks gradually thicken from bottom to top so that when the drive shaft is inserted, the deformable body bends along the upper bending arc section.

[0013] According to an embodiment of the present utility model, the lower section of the shrapnel includes:

[0014] A lower transition section, wherein a lower bending arc section is provided at the upper end of the lower transition section; the lower bending arc section is arranged to be at the junction with the fixing block;

[0015] A lower embedding section, wherein the lower embedding section includes a convex block disposed on the right side; the convex block is arranged to be embedded in the drive shaft; and

[0016] A lower guiding section, where the right side of the lower guiding section has a guiding slope;

[0017] The right side of the lower section of the elastic piece has a lower deformation groove; when the driving shaft interacts with the bump, the lower section of the elastic piece bends along the lower bending arc section and deforms towards the lower deformation groove.

[0018] A toothbrush head, including the toothbrush head noise reduction elastic piece described above, further includes:

[0019] A brush head; and

[0020] A mounting rod, where the mounting rod has a mounting space inside, and the toothbrush head noise reduction elastic piece is arranged on the left side of the mounting space; when the driving shaft is inserted into the mounting space, the toothbrush head noise reduction elastic piece applies forces to the driving shaft from the upper and lower ends.

[0021] According to an embodiment of the present invention, the mounting space includes a driving shaft accommodation space for accommodating the driving shaft and a elastic piece accommodation space for accommodating the toothbrush head noise reduction elastic piece; the middle section of the elastic piece is arranged to be fixedly connected to the left side wall of the elastic piece accommodation space.

[0022] According to an embodiment of the present invention, the extrusion part is arranged to be normally located in the driving shaft accommodation space; when the driving shaft is inserted, the extrusion part is squeezed into the elastic piece accommodation space.

[0023] According to an embodiment of the present invention, the depth of the driving shaft accommodation space is set to be greater than or equal to the depth of the elastic piece accommodation space.

[0024] According to an embodiment of the present invention, it further includes:

[0025] An extension rod, where the extension rod is arranged between the brush head and the mounting rod. Description of the Drawings

[0026] Figure 1 It is a three-dimensional schematic diagram of the toothbrush head noise reduction elastic piece of the present invention.

[0027] Figure 2 It is a side view schematic diagram of the toothbrush head noise reduction elastic piece of the present invention.

[0028] Figure 3 It is a three-dimensional schematic diagram of a deformed embodiment of the toothbrush head noise reduction elastic piece of the present invention.

[0029] Figure 4 It is a three-dimensional schematic diagram of the toothbrush head of the present invention.

[0030] Figure 5 It is a cross-sectional view schematic diagram of the toothbrush head of the present invention.

[0031] Figure 6 This is a partially enlarged cross-sectional schematic view of the toothbrush head of the present utility model.

[0032] Figure 7 This is a three-dimensional schematic view of a modified embodiment of the installation space.

[0033] Figure 8 This is a schematic view of the cooperation between the toothbrush head and the electric handle.

[0034] Figure 9 This is a schematic view of the working condition before the drive shaft is inserted into the installation space.

[0035] Figure 10 This is a schematic view of the working condition after the drive shaft is inserted into the installation space. Detailed implementation manners

[0036] Before detailing any embodiment of the present utility model, it should be understood that in its application, the present utility model is not limited to the construction and arrangement details of the components described in the following description or illustrated in the following drawings. The present utility model is capable of having other embodiments and of being practiced or carried out in various ways. Additionally, it should be understood that the wording and terminology used herein are for the purpose of description and should not be regarded as restrictive. As used herein, "including" or "having" and their variants are intended to cover the listed items and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "installed", "connected", "supported", and "coupled" and their variants are used broadly and cover direct installation and indirect installation, connection, support, and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0037] And, on the one hand, in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present utility model; on the other hand, the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be construed as a limitation on the quantity.

[0038] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the above principles, the embodiments of the present invention can have any deformation or modification.

[0039] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0040] Please refer to Figure 1-3 A noise reduction elastic sheet for a toothbrush head as shown, which includes an elastic sheet middle section 1, an elastic sheet lower section 2, and an elastic sheet upper section 3; wherein the elastic sheet middle section 1 includes a fixing block 11 arranged on the left side; wherein the elastic sheet lower section 2 is arranged below the elastic sheet middle section 1; the elastic sheet lower section 2 abuts against the lower end of the driving shaft 72 through deformation; wherein the elastic sheet upper section 3 abuts against the upper end of the driving shaft 72 through deformation so as to abut the upper end of the driving shaft 72 against the side wall of the mounting hole; the elastic sheet upper section 3 includes a deformation body 31 and a pressing part 32 arranged on the right side of the deformation body 31; the pressing part 32 acts on the driving shaft 72; the left side of the deformation body 31 has an upper deformation groove 311. When the driving shaft 72 and the pressing part 32 interact, the deformation body 31 deforms towards the upper deformation groove 311; the elastic sheet upper section 3 is arranged above the elastic sheet middle section 1 so as to balance the forces at the upper and lower ends of the elastic sheet middle section 1.

[0041] Please continue to refer to Figure 8 、 Figure 9 , it should be noted that the electric handle 7 includes a hand-held part 71 and a driving shaft 72 arranged at the upper end of the hand-held part 71. When the switch of the hand-held part 71 is activated, the hand-held part 71 can drive the driving shaft 72 to vibrate; the driving shaft 72 includes a driving shaft lower section 721 and a driving shaft upper section 722, and the right side of the driving shaft lower section 721 has a lower card slot 7211.

[0042] In actual use, the noise reduction elastic sheet of the toothbrush head of the present utility model includes a middle section 1 of the elastic sheet. The fixing block 11 on the left side of the middle section 1 of the elastic sheet is used to fix the entire noise reduction elastic sheet of the toothbrush head. A lower section 2 and an upper section 3 of the elastic sheet are respectively arranged at the upper and lower ends of the middle section 1 of the elastic sheet. The two respectively abut against the upper and lower ends of the driving shaft 72 through deformation. This setting enables the upper and lower ends of the middle section 1 of the elastic sheet to be in force balance, which is beneficial to better exert the elastic force of the lower section 2 and the upper section 3 of the elastic sheet, and can also make the connection of the fixing block 11 more firm through the pressure at the upper and lower ends; the upper section 3 of the elastic sheet includes a deformable body 31 and a pressing part 32, and the left side of the deformable body 31 has an upper deformation groove 311. When the pressing part 32 on the right side interacts with the driving shaft 72, it can drive the deformable body 31 to deform upward into the upper deformation groove 311, so as to generate a reaction force to press the driving shaft 72 against the side wall of the mounting hole, thereby avoiding the driving shaft 72 from hitting back and forth in the mounting hole to generate noise, and also reducing the vibration transmission loss of the driving shaft 72.

[0043] Please continue to refer to Figure 1 、 Figure 2 , wherein, the deformable body 31 includes an upper bending arc section 312 arranged at the lower end; the upper bending arc section 312 is arranged at the junction of the deformable body 31 and the fixing block 11.

[0044] During processing, the upper deformation groove 311 is a space formed by cutting off part of the material on the right side of the deformable body 31; during the cutting process, the upper bending arc section 312 can be processed at the lower end of the deformable body 31 synchronously. Therefore, the processing operation is relatively simple, and when the upper bending arc section 312 is at the junction of the deformable body 31 and the fixing block 11, it can facilitate the deformation of the deformable body 31 from this position, so that the deformable body 31 obtains a greater resilience.

[0045] Please further refer to Figure 1 、 Figure 2 , wherein, the pressing part 32 is arranged to gradually thicken from bottom to top, so that when the driving shaft 72 is inserted, the deformable body 31 bends along the upper bending arc section 312.

[0046] Specifically, since the pressing part 32 is arranged to gradually thicken from bottom to top, the uppermost end of the pressing part 32 is preferentially in contact with and acts on the upper end of the driving shaft 72, and the upper bending arc section 312 is arranged at the lower end of the deformable body 31. This structural setting is beneficial to the pressing part 32 quickly responding and deforming when the upper end of the driving shaft 72 contacts the pressing part 32, avoiding the situation that the pressing part 32 is difficult to deform and the driving shaft 72 is difficult to insert; in addition, in this embodiment, the shape of the pressing part 32 is a wedge-shaped block that gradually thickens from bottom to top. This shape has the advantages of small processing difficulty and few processing steps.

[0047] Please continue to refer to Figure 3, in a modified embodiment of the extrusion portion 32, the extrusion portion 32 includes a plurality of serrated blocks 321 arranged from bottom to top; the thickness of the plurality of serrated blocks 321 gradually increases from bottom to top, so that when the drive shaft 72 is inserted, the deformable body 31 bends along the upper bending arc section 312; through the design of arranging a plurality of serrated blocks 321 from bottom to top and the thickness of the plurality of serrated blocks 321 gradually increasing from bottom to top, it can also play the role of the wedge-shaped extrusion portion 32 as described above. The structure of the plurality of serrated blocks 321 is beneficial to increasing friction, making the connection of the drive shaft 72 more firm after insertion.

[0048] Please continue to refer to Figure 2 , wherein, the lower section 2 of the elastic sheet includes a lower transition section 21, a lower embedding section 22 and a lower guiding section 23; the upper end of the lower transition section 21 is provided with a lower bending arc section 211; the lower bending arc section 211 is arranged to be adjacent to the fixed block 11; the lower embedding section 22 includes a convex block 221 arranged on the right side; the convex block 221 is arranged to be embedded in the drive shaft 72; the right side of the lower guiding section 23 has a guiding slope 231; in addition, the right side of the lower section 2 of the elastic sheet has a lower deformation groove 24; when the drive shaft 72 interacts with the convex block 221, the lower section 2 of the elastic sheet bends along the lower bending arc section 211 and deforms towards the lower deformation groove 24.

[0049] Through the structural design of the lower transition section 21, the lower embedding section 22, the lower guiding section 23 and the lower deformation groove 24, it is convenient to resist the lower end of the drive shaft 72 through deformation, and when the drive shaft 72 is inserted, the deformation of the lower section 2 of the elastic sheet can be balanced with the deformation of the upper section 3 of the elastic sheet, avoiding the warping of the middle section 1 of the elastic sheet due to unilateral force, making the connection of the middle section 1 of the elastic sheet more firm.

[0050] Please continue to refer to Figure 4-10 A toothbrush head shown in the figure includes the aforementioned toothbrush head noise reduction elastic sheet, and further includes a brush head 4 and a mounting rod 5; a mounting space 51 is provided in the mounting rod 5, and the toothbrush head noise reduction elastic sheet is arranged on the left side of the mounting space 51; when the drive shaft 72 is inserted into the mounting space 51, the toothbrush head noise reduction elastic sheet applies acting forces to the drive shaft 72 from the upper and lower ends.

[0051] Furthermore, the mounting space 51 includes a drive shaft accommodation space 511 for accommodating the drive shaft 72 and an elastic sheet accommodation space 512 for accommodating the toothbrush head noise reduction elastic sheet; the middle section 1 of the elastic sheet is arranged to be fixedly connected to the left side wall of the elastic sheet accommodation space 512.

[0052] In actual use, the drive shaft 72 is inserted into the installation space 51 through the bottom of the installation rod 5. Since the right side of the lower guiding section 23 has a guiding slope 231 to guide the drive shaft 72 into the drive shaft accommodation space 511. When the drive shaft 72 completely enters the drive shaft accommodation space 511, the lower section of the elastic piece 2 is deformed to abut against the lower section 721 of the drive shaft, so that the lower section 721 of the drive shaft abuts against the side wall of the drive shaft accommodation space 511, thereby transmitting the vibration of the drive shaft 72, and the convex block 221 is embedded in the lower card slot 7211 to prevent the drive shaft 72 from loosening. On this basis, the extrusion part 32 is extruded by the upper section 722 of the drive shaft, causing the deformable body 31 to deform. Through the reaction force, the extrusion part 32 abuts the upper section 722 of the drive shaft against the side wall of the drive shaft accommodation space 511, so that during the early, middle, and late stages of toothbrush head use, the drive shaft 72 and the toothbrush head are always in close contact and cooperation, avoiding the noise generated by the upper section 722 of the drive shaft hitting back and forth in the drive shaft accommodation space 511.

[0053] Please continue to refer to Figure 10 , in which the extrusion part 32 is arranged to be located in the drive shaft accommodation space 511 under normal conditions; when the drive shaft 72 is inserted, the extrusion part 32 is squeezed into the elastic piece accommodation space 512.

[0054] Please continue to refer to Figure 7 , in which the depth of the drive shaft accommodation space 511 is set to be greater than or equal to the depth of the elastic piece accommodation space 512.

[0055] Specifically, in the embodiment shown in Figure 9 , the depth of the drive shaft accommodation space 511 is greater than the depth of the elastic piece accommodation space 512. When the size of the drive shaft 72 is relatively long, adopting this structural design can make the length of the noise reduction elastic piece of the toothbrush head smaller, which is beneficial to saving materials; in the embodiment shown in Figure 10 , the depth of the drive shaft accommodation space 511 is equal to the depth of the elastic piece accommodation space 512. At this time, since the size of the drive shaft 72 is relatively short, it will be difficult to process if the length of the noise reduction elastic piece of the toothbrush head is shorter than that of the drive shaft 72.

[0056] Please continue to refer to Figure 6 、 Figure 8 , which further includes an extension rod 6. The extension rod 6 is arranged between the brush head 4 and the installation rod 5 to adjust the length of the entire toothbrush head.

[0057] The above is only an illustration of the best embodiment of the present invention, but it should not be construed as a limitation to the claims. The present invention is not limited to the above embodiments, and its specific structure allows changes. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A toothbrush head noise reduction shrapnel, characterized in that: include: A spring middle section (1), wherein the spring middle section (1) comprises a fixing block (11) arranged on the left side; a spring sheet lower section (2), wherein the spring sheet lower section (2) is arranged below the spring sheet middle section (1); the spring sheet lower section (2) presses against the lower end of the drive shaft through deformation; and An upper section (3) of a spring sheet, wherein the upper section (3) of the spring sheet presses against the upper end of the drive shaft by deformation, so that the upper end of the drive shaft presses against the side wall of the mounting hole; the upper section (3) of the spring sheet comprises a deformation body (31) and an extrusion portion (32) arranged on the right side of the deformation body (31); the extrusion portion (32) acts on the drive shaft; the left side of the deformation body (31) has an upper deformation groove (311), when the drive shaft and the extrusion portion (32) interact, the deformation body (31) deforms toward the upper deformation groove (311); the upper section (3) of the spring sheet is arranged above the middle section (1) of the spring sheet, so that the forces at the upper and lower ends of the middle section (1) of the spring sheet are balanced.

2. The toothbrush head noise reduction spring according to claim 1, characterized in that: The deformation body (31) comprises an upper bending arc segment (312) arranged at the lower end; the upper bending arc segment (312) is arranged at the junction of the deformation body (31) and the fixing block (11).

3. The toothbrush head noise reduction spring piece according to claim 2, characterized in that: The extrusion portion (32) is configured to gradually increase in thickness from bottom to top, so that when the drive shaft is inserted, the deformation body (31) bends along the upper bending arc segment (312).

4. The toothbrush head noise reduction spring piece according to claim 2, characterized in that: The extrusion portion (32) comprises a plurality of sawtooth blocks (321) arranged from bottom to top; the thickness of the plurality of sawtooth blocks (321) gradually increases from bottom to top, so that when the drive shaft is inserted, the deformation body (31) bends along the upper bending arc segment (312).

5. The toothbrush head noise reduction spring piece according to claim 1, characterized in that: The lower section of the spring (2) comprises: a lower transition section (21), wherein a lower bending arc section (211) is provided at the upper end of the lower transition section (21); the lower bending arc section (211) is arranged to intersect with the fixing block (11); a lower embedding section (22), wherein the lower embedding section (22) comprises a convex block (221) arranged on the right side; the convex block (221) is arranged to be embedded in the drive shaft; and A lower guiding section (23), wherein the right side of the lower guiding section (23) has a guiding slope (231); The right side of the lower section (2) of the spring sheet has a lower deformation groove (24); when the drive shaft interacts with the protrusion (221), the lower section (2) of the spring sheet is bent along the lower bending arc section (211) and deformed towards the lower deformation groove (24).

6. A toothbrush head, comprising the toothbrush head noise reduction spring sheet according to any one of claims 1 to 5, characterized in that: include: a brush head (4); and A mounting rod (5), wherein the mounting rod (5) has a mounting space (51) therein, and a toothbrush head noise reduction spring is arranged on the left side of the mounting space (51); when the drive shaft is inserted into the mounting space (51), the toothbrush head noise reduction spring applies a force to the drive shaft from the upper and lower ends.

7. The toothbrush head according to claim 6, characterized in that: The installation space (51) comprises a drive shaft accommodating space (511) for accommodating a drive shaft and a spring-type accommodating space (512) for accommodating a toothbrush head noise reduction spring type; the spring type middle section (1) is arranged to be fixedly connected to the left side wall of the spring type accommodating space (512).

8. The toothbrush head according to claim 7, characterized in that: The extrusion portion (32) is arranged to be located in the drive shaft accommodating space (511) under normal conditions; when the drive shaft is inserted, the extrusion portion (32) is squeezed into the spring sheet accommodating space (512).

9. The toothbrush head according to claim 7, characterized in that: The depth of the drive shaft accommodating space (511) is set to be greater than or equal to the depth of the spring sheet accommodating space (512).

10. The toothbrush head according to claim 6, characterized in that: Further including: An extension rod (6), wherein the extension rod (6) is arranged between the brush head (4) and the mounting rod (5).

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