Sealing element and electric shaver

Abstract

The utility model belongs to the technical field of personal care electric appliances, and provides a sealing piece and an electric shaver, the sealing piece comprises a sealing body, a first deformation body, a second deformation body, a connecting body and a reinforcing piece, the sealing body is provided with a shaft hole for a driving shaft to pass through, the first deformation body is circumferentially arranged around the sealing body and is connected with the sealing body, and the second deformation body is connected with the connecting body. The second deformation body surrounds the first deformation body in the circumferential direction and is connected with the outer side of the first deformation body, and the outer side of the second deformation body is connected with the connecting body; the reinforcing piece is at least arranged on the first deformation body and / or the second deformation body. Therefore, the reinforcing piece is at least arranged on the first deformation body and / or the second deformation body, so that the structural strength of the sealing piece can be improved through the reinforcing piece, the shape of the sealing piece is kept stable, the sealing piece can be kept in a stable sealing state, the sealing reliability is good, the problem of sealing failure is well avoided, and the service life of the sealing piece is prolonged. And the product performance and quality of the electric shaver are improved.

Description

Technical Field

[0001] This utility model belongs to the field of personal care electrical appliance technology, and in particular relates to a sealing component and an electric shaver. Background Technology

[0002] In daily life, using electric shavers to trim beards greatly improves the convenience and efficiency of beard trimming. Electric shavers use a motor to drive moving blades (dynamic blades) to rotate or reciprocate linearly relative to stationary blades (static blades) to cut beard hairs.

[0003] In related technologies, the motor is installed inside a housing, and a cover is installed above the motor. The cover includes a seal, through which the motor's drive shaft passes to achieve a relative seal, preventing shavings or external moisture from entering the housing containing the motor, battery, and other electronic components. However, due to increased usage time or changes in ambient temperature and humidity, the seal is prone to localized bulging or denting, leading to decreased sealing reliability and potential seal failure. Utility Model Content

[0004] In view of this, the present invention provides a sealing element and an electric shaver to solve the problem of sealing failure caused by the deterioration of the reliability of the sealing element.

[0005] To solve the above problems, the technical solution of this utility model is implemented as follows:

[0006] In a first aspect, embodiments of the present invention provide a sealing element for sealing the drive shaft of a drive unit in an electric shaver. The sealing element includes: a sealing body having a shaft hole through which the drive shaft passes; a first deformable shape having a circumferentially surrounding the sealing body, with its inner side connected to the sealing body; a second deformable shape having a circumferentially surrounding the first deformable shape, with its inner side connected to the outer side of the first deformable shape; a connecting body for mounting and fixing, with the outer side of the second deformable shape connected to the connecting body; and a reinforcing member, at least on the first deformable shape and / or the second deformable shape, for stabilizing the shape of the sealing element.

[0007] In some embodiments, the second deformable shape protrudes in a direction away from the drive member and has a deformation groove formed inside, and the reinforcement is disposed at least within the deformation groove.

[0008] In some embodiments, the second variant includes two spaced, opposing sidewalls and a top connected to the same end of the two sidewalls, the other ends of the two sidewalls being connected to the outside of the connecting body and the first variant, respectively; wherein the reinforcement is connected to at least one of the two sidewalls and the top.

[0009] In some embodiments, the second deformable shape has an extension extending along the reciprocating motion direction of the drive shaft, and the deformation groove is formed at least on the extension; wherein a plurality of the reinforcing members are spaced apart on the extension.

[0010] In some embodiments, the second variant has two extensions located on opposite sides of the drive shaft; wherein at least one of the extensions is provided with a plurality of the reinforcing members at intervals.

[0011] In some embodiments, both the sealing body and the second deformable form protrude in a direction away from the drive member and are both higher than the surface of the connecting body; wherein, relative to the surface of the connecting body, the protrusion height of the sealing body is greater than the protrusion height of the second deformable form.

[0012] In some embodiments, the seals are arranged side by side at intervals of at least two, and each of the connecting bodies is interconnected.

[0013] Secondly, this utility model embodiment also provides an electric shaver, comprising: a housing having an internal mounting cavity with an opening at one end; a drive member disposed within the mounting cavity, the drive member having a drive shaft extending toward the opening; the sealing member described in the first aspect, the drive shaft passing through the shaft hole; and a cover for supporting the sealing member, the sealing member being connected to the cover; wherein the cover is connected to the housing and covers the opening.

[0014] In some embodiments, the electric shaver further includes a pressing member, the output end of the drive member is provided with a mounting seat, the drive shaft is connected to the mounting seat, the pressing member and the mounting seat are fixedly connected, and the sealing body is pressed between the pressing member and the mounting seat.

[0015] In some embodiments, the seal further includes a sealing ring disposed at the contour edge of the cover to at least seal the gap between the cover and the housing; wherein the sealing ring is connected to the connecting body and integrally formed.

[0016] This utility model provides a sealing element and an electric shaver. The sealing element includes a sealing body, a first shape variant, a second shape variant, a connecting body, and a reinforcing member. The first shape variant is circumferentially arranged around and connected to the sealing body, and the second shape variant is circumferentially arranged around and connected between the first shape variant and the connecting body. This utility model, by providing a reinforcing member on at least the first shape variant and / or the second shape variant, improves the structural strength of the first shape variant and / or the second shape variant, ensuring the stability of the entire sealing element's shape. This maintains a stable sealing state, resulting in good sealing reliability, effectively avoiding sealing failure, and improving the product performance and quality of the electric shaver. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the sealing element provided in this embodiment of the utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the sealing element provided in one orientation according to an embodiment of the present invention;

[0019] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle;

[0020] Figure 4 This is a top view of the sealing element provided in this embodiment of the utility model;

[0021] Figure 5 yes Figure 4 Schematic diagram of the cross section at point BB;

[0022] Figure 6 yes Figure 4 Cross-sectional view at point CC;

[0023] Figure 7 This is an assembly diagram of the sealing element and the cover provided in this embodiment of the utility model;

[0024] Figure 8 This is a cross-sectional schematic diagram of a partial structure of the electric shaver provided in this embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Seal; 11. Seal body; 111. Shaft hole; 112. Sealing ring; 12. First deformable part; 121. Recess; 13. Second deformable part; 130. Extension section; 131. Deformation groove; 132. Side wall; 133. Top; 14. Connecting body; 15. Reinforcing member;

[0027] 21. Housing; 22. Drive unit; 23. Cover; 24. Press plate; 25. Mounting base; 26. Sealing ring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this utility model will not be described separately.

[0030] In the following description, the terms "first," "second," and "..." are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0031] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0032] like Figure 1 As shown in the figure, the sealing element 1 provided in this embodiment of the utility model is mainly set above the drive unit inside the electric shaver. It is used to seal the drive shaft of the drive unit and the cover to prevent shaved beard or external moisture from entering the housing containing electronic components such as the drive unit, thereby protecting the electronic components.

[0033] like Figure 1 and Figure 2As shown, the seal 1 is used to seal at least the drive shaft of the drive unit in an electric shaver. The seal 1 includes a sealing body 11, a first variant 12, a second variant 13, a connecting body 14, and a reinforcing member 15. The sealing body 11 has a shaft hole 111 through which the drive shaft passes. The first variant 12 is circumferentially arranged around the sealing body 11, and its inner side is connected to the sealing body 11. The second variant 13 is circumferentially arranged around the first variant 12, and its inner side is connected to the outer side of the first variant 12. The outer side of the second variant 13 is connected to the connecting body 14, which is used for mounting and fixing to support other parts of the seal 1. In this configuration, the sealing body 11, the first variant 12, the second variant 13, and the connecting body 14 are sequentially connected, and the drive shaft of the drive unit passes through the shaft hole 111 to seal the gap between the shaft hole 111 and the drive shaft.

[0034] Specifically, since the drive shaft needs to move to drive the connected blades in a shaving motion, the seal 1 needs to have a certain elastic deformation property to maintain an effective seal through elastic deformation when the drive shaft moves (such as shifting its position within a certain range). Therefore, the seal 1 can be made of flexible materials such as rubber or silicone. Furthermore, the shape formed by the combination of the sealing body 11, the first deformable shape 12, the second deformable shape 13, and the connecting body 14 can be a corrugated structure, meaning that the parts are not on the same plane. This corrugated structure provides more deformation allowance, meeting the requirements for reliable sealing. In a specific configuration, the sealing body 11, the first deformable shape 12, the second deformable shape 13, and the connecting body 14 can be integrally molded by injection molding, which is convenient to manufacture and ensures good reliability of the connection between the parts.

[0035] Specifically, during the movement of the drive shaft, the drive shaft pulls the sealing body 11 to move. The movement of the sealing body 11 causes the first deformable part 12 and the second deformable part 13 to deform. Moreover, the first deformable part 12 and the second deformable part 13 are the main components that provide deformation compensation, and they deform synchronously when the drive shaft moves. Therefore, the reinforcing member 15 is provided at least on the first deformable part 12 and / or the second deformable part 13 to keep the shape of the entire sealing part 1 of the first deformable part 12 stable. Specifically, providing the reinforcing member 15 on the first deformable part 12 and / or the second deformable part 13 is equivalent to increasing the thickness of the corresponding deformable part, thereby enhancing the structural strength of the corresponding deformable part. Even after the first deformable part 12 and / or the second deformable part 13 undergoes elastic deformation under force, the reinforcing member 15 can generate a pulling force to restore the corresponding deformable part to the state before the elastic deformation, thereby keeping the shape of the sealing part 1 of the first deformable part 12 stable. Meanwhile, the reinforcement 15 can also effectively prevent bulging or collapse of the corresponding deformation parts, thereby improving the reliability of the sealing performance of the entire sealing element 1 of the first deformation 12.

[0036] A sealing element 1 provided in this embodiment of the present invention includes a sealing body 11, a first deformable shape 12, a second deformable shape 13, a connecting body 14, and a reinforcing member 15. The sealing body 11 has a shaft hole 111 through which a drive shaft passes. The first deformable shape 12 is circumferentially arranged around and connected to the sealing body 11, and the second deformable shape 13 is circumferentially arranged around and connected between the first deformable shape 12 and the connecting body 14. The reinforcing member 15 is provided at least on the first deformable shape 12 and / or the second deformable shape 13. Thus, the reinforcement member 15 improves the structural strength of the corresponding deformable shape, allowing the corresponding deformable shape to maintain a stable shape under the force generated by the reinforcement member 15 during elastic deformation, thereby ensuring that the corresponding deformable shape remains in a state that provides a stable seal. This arrangement results in good sealing reliability of the sealing element 1, effectively avoiding the problem of seal failure and improving the quality of the seal.

[0037] like Figure 1 and Figure 6As shown, in some embodiments, the second deformable part 13 protrudes away from the driving member and has a deformation groove 131 formed inside it, with the reinforcing member 15 at least disposed within the deformation groove 131. Specifically, the second deformable part 13 protrudes away from the driving member, thus being higher than the surface of the connecting body 14 in the vertical direction, making the cross-sectional shape of the second deformable part 13 in the horizontal direction approximately "inverted U". This configuration gives the second deformable part 13 a larger deformation allowance. By forming a deformation groove 131 inside the second deformable part 13 and placing the reinforcing member 15 at least within the deformation groove 131, the second deformable part 13 can maintain its initial state without elastic deformation even after several elastic deformations due to the reinforcing effect of the reinforcing member 15. The overall shape of the second deformable part 13 is not damaged or deformed, and it still has good sealing performance, improving the reliability and service life of the seal.

[0038] like Figure 1 and Figure 5 As shown, in some embodiments, the second deformable form 13 includes two spaced and opposite sidewalls 132 and a top 133 connected to the same end of the two sidewalls 132. The other ends of the two sidewalls 132 are respectively connected to the outer side of the connecting body 14 and the first deformable form. Thus, the combination of the two sidewalls 132 and the top 133 forms a deformation groove 131. Moreover, the reinforcing member 15 disposed in the deformation groove 131 is connected to at least one of the two sidewalls 132 and the top 133. For example, the reinforcing member 15 can be connected to either of the two sidewalls 132, or it can be connected to both sidewalls 132 simultaneously, or it can be connected to both sidewalls 132 and the top 133. There are various ways to set it, all of which can improve the sealing performance reliability of the second deformable form 13.

[0039] like Figure 1 and Figure 3 As shown, in some embodiments, the second deformable form 13 has an extension segment 130 extending along the reciprocating direction of the drive shaft, and a deformation groove 131 is formed at least on the extension segment 130; wherein, a plurality of reinforcing members 15 are spaced apart on the extension segment 130. Specifically, the second deformable form 13 is arranged around the first deformable form and needs to provide a seal in both directions of the reciprocating motion of the drive shaft. Therefore, the outline shape of the second deformable form 13 is generally composed of two spaced-apart extension segments 130 and two semi-circular bends respectively connected to the opposite ends of the two extension segments 130. The second deformable form 13 thus constitutes a closed ring structure, with an overall elliptical, racetrack-shaped, or approximately rectangular shape with rounded corners. It has a deformation length that can meet the reciprocating translational motion of the drive shaft in a certain direction. In this way, the extension direction of the extension segment 130 is substantially parallel to the movement direction of the drive shaft, thereby maintaining an effective seal in the movement direction of the drive shaft.

[0040] Specifically, deformation grooves 131 are formed at least on the extension section 130, and multiple reinforcing members 15 are spaced apart on the extension section 130. In this way, the structural strength of the extension section 130 is improved by the multiple reinforcing members 15, ensuring the shape of the extension section 130 remains stable and preventing collapse or bulging, thus enhancing the reliability of the sealing effect. The reinforcing members 15 can be spaced apart and evenly arranged along the direction of movement of the drive shaft, thereby ensuring that the second deformation section 13 is subjected to uniform force. Of course, a specific deformation section can also be customized according to deformation requirements, offering flexibility to meet different design needs.

[0041] like Figure 1 and Figure 3 As shown, in some embodiments, the second shape variant 13 has two extensions 130, which are located on opposite sides of the drive shaft, and thus, at least one extension 130 is provided with a plurality of reinforcing members 15 at intervals. In this way, reinforcing members 15 are provided on opposite sides along the direction of movement of the drive shaft, and the multiple reinforcing members 15 structurally reinforce different positions of the second shape variant 13, thereby further improving the reliability of maintaining the shape stability of the second shape variant 13.

[0042] like Figure 5 As shown, in some embodiments, the first deformable part 12 is recessed and bent in the direction of the drive member to form a recess 121. Specifically, by recessing and bending the first deformable part 122 in the direction of the drive member to form a recess 121, the internal space is utilized. Without increasing the overall size, the recess 121 can also increase the deformation range of the first deformable part 12 that can undergo elastic deformation, ensuring that the first deformable part 12 can produce a deformation that meets the sealing requirements.

[0043] In some embodiments, the reinforcing member 15 is connected to the first deformable shape 12 and the second deformable shape 13. Specifically, the first deformable shape 12 and the second deformable shape 13 are connected, and when the first deformable shape 12 deforms, it will pull the second deformable shape 13 to also undergo a certain degree of elastic deformation. Therefore, by connecting the reinforcing member 15 to the first deformable shape 12 and the second deformable shape 13, the structure of the first deformable shape 12 and the second deformable shape 13 can be strengthened simultaneously by the reinforcing member 15, which can better improve the stability of the overall shape of the first deformable shape 12 and the second deformable shape 13, thereby improving the reliability of the seal.

[0044] like Figure 5As shown, in some embodiments, both the sealing body 11 and the second deformable form 13 protrude in a direction away from the drive member and are both higher than the surface of the connecting body 14. Furthermore, the protrusion height of the sealing body 11 is greater than the protrusion height of the second deformable form 13 relative to the surface of the connecting body 14. Specifically, the fact that both the sealing body 11 and the second deformable form 13 protrude in a direction away from the drive member allows each to have more deformable material, resulting in high overall structural strength and greater elastic deformation performance, thus ensuring good sealing reliability. Moreover, by making the protrusion height of the sealing body 11 greater than that of the second deformable form 13, a suitable safe distance can be maintained between the drive shaft extending from the sealing body 11 and the second deformable form 13 when the blade assembly is connected, preventing the second deformable form 13 from interfering with the movement of the blade assembly, demonstrating good design rationality.

[0045] like Figure 1 As shown, in some embodiments, at least two seals 1 are arranged side-by-side with a gap between them, and each connecting body 14 is interconnected, so that each seal 1 can be connected to form a whole. In this way, each seal 1 can be used to seal one drive shaft, thereby meeting the need for simultaneous sealing when multiple drive shafts are provided. Specifically, when multiple seals 1 are provided, they can be manufactured by integral injection molding, which offers good manufacturing convenience.

[0046] like Figure 8 As shown, this utility model embodiment also provides an electric shaver, including a housing 21, a drive member 22, a cover 23, and a sealing member 1 as described in any of the above embodiments. The housing 21 has an internal mounting cavity with an opening at one end; the drive member 22 is disposed within the mounting cavity, and the drive shaft of the drive member 22 extends towards the opening; the cover 23 supports the sealing member 1, the sealing member 1 is connected to the cover 23, and the cover 23 is connected to the housing 21 and covers the opening; the drive shaft extends through the shaft hole 111. Since this electric shaver adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0047] Specifically, the shape inside the housing 21 can be selected and designed according to actual needs, and is not specifically limited here. The cover 23 is sealed to the housing 21 and covers the opening to ensure the waterproof performance of the entire electric shaver. The drive shaft is sealed by the seal 1. Since the seal 1 will not bulge or collapse after long-term use, the sealing performance is stable, thereby improving the product's service life and reliability, and enhancing the user experience.

[0048] like Figure 8As shown, in some embodiments, the electric shaver further includes a pressing member 24, a mounting base 25 at the output end of the drive member 22, a drive shaft connected to the mounting base 25, a pressing plate 24 and a mounting base 25 fixedly connected, and a sealing body 11 pressed between the pressing plate 24 and the mounting base 25. The sealing body 11 undergoes elastic deformation due to the clamping force generated between the pressing plate 24 and the mounting base 25, thereby achieving effective sealing between the drive shaft and the shaft hole 111. Specifically, the inner side of the pressing member 24 has a groove, the tops of the sealing body 11 and the mounting base 25 are inserted into the groove of the pressing member 24, and the pressing plate 24 and the mounting base 25 are fixed with screws to compress the sealing body 11 between the pressing plate 24 and the mounting base 25. Furthermore, a sealing ring 112 protrudes from the top surface of the sealing body 11, and this sealing ring 112 surrounds the shaft hole. In this way, by protruding the sealing ring 112, a blocking effect can be formed relative to the top surface of the sealing body 11, which can increase the difficulty for external impurities and moisture to enter. At the same time, under the compression of the pressing plate 24, the sealing ring 112 undergoes elastic deformation, which can fill the gap between the pressing plate 24 and the sealing body 11, thereby improving the reliability of the seal between the pressing plate 24 and the sealing body 11.

[0049] like Figure 7 As shown, in some embodiments, the seal 1 further includes a sealing ring 26, which is disposed on the contour edge of the cover 23 to at least seal the gap between the cover 23 and the housing 21; wherein the sealing ring is connected to the connecting body and integrally formed. Specifically, the sealing ring 26 is disposed along the contour shape of the cover 23, thereby sealing the edge of the cover 23 to at least achieve waterproofing between the cover 23 and the housing 21. Moreover, the sealing ring 26 can be connected to the connecting body 14, which can define the position of the sealing ring 26 and facilitate the installation of the sealing ring 26. The sealing ring 26 and the connecting body 14 can be integrally formed, or they can be connected by setting multiple elastic connecting posts, and the connecting posts can also be formed by injection molding, providing flexibility in the setting method.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A seal for sealing a drive shaft of a drive member in an electric shaver, characterized in that The sealing element includes: A sealing body, wherein the sealing body has a shaft hole through which the drive shaft passes; A first variant is disposed circumferentially around the sealing body, and the inner side of the first variant is connected to the sealing body; A second variant is provided circumferentially around the first variant, and the inner side of the second variant is connected to the outer side of the first variant; A connecting body is used for installation and fixation, and the outer side of the second variant is connected to the connecting body; A reinforcing member, at least on the first and / or second deformable parts, is provided to stabilize the shape of the seal.

2. The seal of claim 1, wherein, The second deformable part protrudes in a direction away from the driving member and has a deformation groove formed inside, and the reinforcing member is disposed at least in the deformation groove.

3. The seal of claim 1, wherein, The second variant includes two spaced and opposing sidewalls and a top connected to the same end of the two sidewalls, the other ends of the two sidewalls being connected to the outside of the connecting body and the first variant, respectively; wherein the reinforcing member is connected to at least one of the two sidewalls and the top.

4. The seal of claim 1, wherein The second deformable shape has an extension section extending along the reciprocating motion direction of the drive shaft, and the deformation groove is formed at least on the extension section; wherein, a plurality of the reinforcing members are spaced apart on the extension section.

5. The seal of claim 4, wherein, The second variant has two extensions, located on opposite sides of the drive shaft; wherein at least one of the extensions is provided with a plurality of the reinforcing members at intervals.

6. The seal as claimed in claim 1, characterized in that, Both the sealing body and the second deformable shape protrude in a direction away from the driving member and are both higher than the surface of the connecting body; wherein, relative to the surface of the connecting body, the protrusion height of the sealing body is greater than the protrusion height of the second deformable shape.

7. The seal as described in any one of claims 1 to 6, characterized in that, The sealing elements are arranged side by side at intervals of at least two, and each of the connecting bodies is interconnected.

8. An electric shaver, characterized in that, include: The housing has an internal mounting cavity with an opening at one end; A driving component is disposed within the mounting cavity, and the driving shaft of the driving component extends toward the opening. ； The seal as described in any one of claims 1 to 7, wherein the drive shaft extends through the shaft hole; A cover body for supporting the seal, the seal being connected to the cover body; wherein the cover body is connected to the housing and covers the opening.

9. The electric shaver as described in claim 8, characterized in that, The electric shaver also includes a pressing component, the output end of the drive component is provided with a mounting base, the drive shaft is connected to the mounting base, the pressing component and the mounting base are fixedly connected, and the sealing body is pressed between the pressing component and the mounting base.

10. The electric shaver as described in claim 8, characterized in that, The sealing element further includes a sealing ring disposed on the contour edge of the cover to at least seal the gap between the cover and the housing; wherein the sealing ring is connected to the connecting body and is integrally formed.

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