Sealing washer and selectable one-way clutch

Abstract

The utility model relates to a sealing washer and a selectable one-way clutch. The cross section of the sealing washer is roughly in a herringbone shape, and the sealing washer is characterized by comprising a top and a bottom in the height direction of the sealing washer, two symmetrical inclined supporting legs are arranged at the bottom in the width direction of the sealing washer, and the two supporting legs incline in the direction away from the top. The two supporting legs are symmetrically arranged at the bottom in the width direction, when the sealing washer is installed in the sealing groove, the sealing washer can be stably erected in the sealing groove, and the supporting legs are obliquely arranged, so that the rigidity of the sealing washer when the sealing washer is pressed is further effectively improved; therefore, the risk of inclination or collapse in the installation process or in the pressed state is effectively avoided, and the sealing performance and assembly convenience in a narrow groove are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of selectable one-way clutch sealing, and particularly to a sealing washer for a selectable one-way clutch. Background Art

[0002] The sealing performance between the plastic cover and the metal housing of a selectable one-way clutch (SOWC for short) is crucial to ensure the reliability and long-term operation of the clutch. For this purpose, a sealing washer made of rubber is usually embedded at the interface between the plastic cover and the metal housing. As a static gasket, it can effectively prevent grease or lubricant from leaking through the gap between the plastic cover and the metal housing.

[0003] As Figure 1 and Figure 2 shown, are the three-dimensional view and cross-sectional view of the sealing washer in the related art. It can be seen that the cross-section of the sealing washer is in a racetrack shape. The height value of the sealing washer is greater than the width value, and support protrusions are provided on both sides of the sealing washer in the width direction, and a plurality of support protrusions are arranged at intervals along the extending direction of the sealing washer. However, when faced with a sealing groove with a small size, especially a sealing groove whose width value exceeds the height value, the limitations of the sealing washer of this structure are fully exposed. During the assembly process, the sealing washer is extremely prone to tilting or collapsing, destroying the original sealing effect, resulting in the leakage of grease or lubricant, and thus affecting the normal operation of the selectable one-way clutch.

[0004] Therefore, how to improve the structure of the sealing washer to make it suitable for this type of sealing groove, and make the assembly process convenient and stable, and achieve stable and efficient sealing in the sealing groove with limited space has become an urgent problem to be solved. Utility Model Content

[0005] To overcome the problems existing in the related art, the present disclosure provides a sealing washer and a selectable one-way clutch.

[0006] According to the first aspect of the embodiments of the present disclosure, the present disclosure provides a sealing washer. The cross-section of the sealing washer is substantially in a "human" shape, and includes the following features: along the height direction of the sealing washer, it includes: a top and a bottom; along the width direction of the sealing washer, two symmetric inclined feet are arranged at the bottom, and the two feet are inclined away from the top direction.

[0007] In some embodiments, along the height direction of the sealing washer, the sealing washer has a middle part located between the top and the bottom. The two side walls of the middle part are recessed along the width direction of the sealing washer to form a waist, and the waist makes the top form a head.

[0008] In some embodiments, the top surface of the head is a curved surface and bulges away from the bottom.

[0009] In some embodiments, there is a crotch portion between the two legs that is gradually recessed toward the top, and the crotch portion enables the bottom to form two legs that are spaced apart and inclined.

[0010] In some embodiments, along the length direction of the sealing gasket, the sealing gasket includes a straight portion and a curved portion, wherein the sealing gasket is provided with a supporting protrusion on the side wall of the curved portion, and the supporting protrusion protrudes in a direction away from the side wall along the width direction.

[0011] In some embodiments, along the length direction of the sealing gasket, the supporting protrusion is arranged in the middle of the curved portion.

[0012] In some embodiments, two supporting protrusions are symmetrically provided on two side walls of the sealing gasket at the bending portion.

[0013] In some embodiments, the sealing gasket is in a closed annular structure.

[0014] According to a second aspect of an embodiment of the present disclosure, the present disclosure provides an optional one-way clutch, comprising: a plastic cover body, a sealing groove is provided at the edge of the end surface of the plastic cover body, and the width value of the sealing groove is greater than the height value; a sealing gasket as described in the first aspect, the sealing gasket is installed in the sealing groove, wherein the width values ​​of the bottom and the top of the sealing gasket are both smaller than the width value of the sealing groove.

[0015] In some embodiments, the top surface of the top of the sealing gasket is an arc-shaped surface, and after the sealing gasket is installed in the sealing groove, the top protrudes from the sealing groove.

[0016] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the sealing gasket is provided with two symmetrically inclined supporting feet at its bottom, so that the cross-section of the sealing gasket is generally in the shape of a "human"; when the sealing gasket is installed in a sealing groove whose width is greater than its height, the two supporting feet can play a role of stable support, thereby ensuring that the sealing gasket stands upright and stable during the assembly process or under pressure, effectively avoiding the tilting of the sealing gasket in the sealing groove, and enhancing the structural rigidity of the sealing gasket when subjected to medium pressure through the inclined design away from the top, effectively preventing the common collapse problem of traditional sealing gaskets, and significantly improving the sealing performance and assembly convenience in narrow grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings here are incorporated into and form a part of the specification, showing embodiments consistent with the present disclosure and, together with the specification, are used to explain the principles of the present disclosure.

[0018] Figure 1 is a perspective view of a sealing gasket shown in the related art;

[0019] Figure 2 is a transverse cross-sectional view of a combination of a sealing gasket and a sealing groove shown in the related art;

[0020] Figure 3 is a perspective view of a sealing gasket shown according to an exemplary embodiment;

[0021] Figure 4 is a transverse cross-sectional view of a combination of a sealing gasket and a sealing groove shown according to an exemplary embodiment. Detailed Description of the Invention

[0022] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0023] According to an embodiment of the present disclosure, the sealing gasket 100 is adapted to be installed in the sealing groove 200 of an optional one-way clutch. In the present disclosure, unless otherwise specified, the width direction W and the height direction H are described by taking the cross-section of the sealing gasket 100 as an example. For example, the width direction W refers to Figure 4 the left-right direction shown in Figure 4 and the height direction H refers to Figure 3 the up-down direction shown in

[0024] To solve the above technical problems, the present disclosure provides a sealing gasket 100. As shown in Figure 4 which is a cross-sectional view of the sealing gasket 100 along the height direction H. The sealing gasket 100 includes a top 10 and a bottom 20. After the sealing gasket 100 is embedded in the sealing groove 200, the top 10 is the part close to the notch of the sealing groove 200, and the bottom 20 is the part close to the bottom wall of the sealing groove 200.

[0025] As shown in Figure 4As shown, the cross-section of the sealing gasket 100 is generally in a "human" shape. Along the width direction W, two symmetric inclined feet 21 can be arranged at the bottom 20, and the two feet 21 are inclined away from each other in the direction away from the top 10. Specifically, as Figure 4 shown, the two feet 21 at the bottom 20 of the sealing gasket 100 are symmetrically distributed along the width direction W and are inclined in the direction away from the top 10, ensuring that when the sealing gasket 100 is installed in the sealing groove 200, the two feet 21 can abut against the bottom wall and the side wall of the sealing groove 200, which can well play a role in stably supporting the whole sealing gasket 100, ensuring the upright stability of the sealing gasket 100 during the assembly process or under pressure, and preventing the gasket from shifting or tilting during the assembly process or under pressure.

[0026] In addition, as Figure 4 shown, the whole sealing gasket 100 can have a symmetric structure along the width direction W, and the center of symmetry is the width center line O of the sealing gasket 100. The distal ends of the two feet 21 can be in the same plane, and this plane is perpendicular to the width center line O. Therefore, when the sealing gasket 100 is installed in the sealing groove 200, the inclination of the sealing gasket 100 in the sealing groove 200 is effectively avoided.

[0027] The two inclined and symmetric feet 21, combined with the distal ends of the feet 21 being in the same plane, enhance the rigidity of the sealing gasket 100 when bearing the medium pressure, making it not easy to deform under high pressure, effectively preventing the common collapse problem of the traditional sealing gasket 100, thus maintaining a good sealing effect and significantly improving the sealing performance in a narrow groove.

[0028] In some embodiments, along the height direction H of the sealing gasket 100, the sealing gasket 100 has a middle part located between the top 10 and the bottom 20. The two side walls of the middle part are recessed along the width direction W of the sealing gasket 100 to form a waist 30, and the waist 30 makes the top 10 form a head 11. The waist 30 is in a funnel shape, and the waist 30 formed by a curve also makes the contour of the side wall of the sealing gasket 100 smoother, avoiding sharp corners. When the sealing gasket 100 is installed in the sealing groove 200, it can be more smooth, improving the smoothness during assembly.

[0029] In addition, the waist 30 makes the top 10 form a protruding head 11. Thus, the interface when the sealing gasket 100 contacts the side wall of the sealing groove 200 is changed. As Figure 4As shown, when the sealing gasket 100 is installed in the sealing groove 200, the waist 30 of the sealing gasket 100 makes the cross-section of the sealing gasket 100 generally in a "big" character structure. The two sides of the head 11 can also play a supporting role, keeping the sealing gasket 100 in a stable position in the sealing groove 200. Even under the action of the medium pressure, it can maintain an upright state, avoiding the common problems of tilting or displacement of traditional gaskets.

[0030] In addition, the waist 30 allows the sealing gasket 100 to produce necessary elastic deformation during installation, thus helping to avoid undesirable deformation, bending or tilting when under pressure. Especially when the size of the sealing groove 200 is limited, it can prevent the gasket from collapsing during assembly or use.

[0031] Furthermore, the top surface 12 of the head 11 is an arc surface and protrudes away from the bottom 20. After the sealing gasket 100 is installed in the sealing groove 200, the head 11 can protrude from the notch of the sealing groove 200, that is, the overall height value of the sealing gasket 100 is greater than the height value H of the sealing groove 200. 槽 The head 11 with an arc surface not only makes the sealing gasket 100 have a more beautiful appearance, avoiding hooking with objects outside the sealing groove 200 and causing the sealing gasket 100 to slip out of the sealing groove 200. In addition, the protruding head 11 can also provide an additional gripping point, facilitating manual or mechanical assembly.

[0032] In the embodiments of the present disclosure, the formation of the two legs 21 of the bottom 20 can be in various forms. For example, the two legs 21 can be detachably fixed to the bottom 20. Or, the waist 30 of the sealing gasket 100 makes the cross-section of the sealing gasket 100 generally in a "H" character structure, that is, the bottom wall of the bottom 20 can also be a plane and directly abut against the bottom wall of the sealing groove 200.

[0033] In this embodiment, there is a crotch 22 formed by recessing towards the top 10 between the two legs 21. The crotch 22 makes the bottom 20 form two spaced and inclined legs 21, making the two legs 21 integrally formed with the bottom 20 and making the cross-section of the sealing gasket 100 generally in a "human" character or "big" character structure.

[0034] The crotch 22 not only increases the structural rigidity of the sealing gasket 100, but also enhances the contact stability between the sealing gasket 100 and the bottom wall of the sealing groove 200. At the same time, the two legs 21 of the bottom 20 are spaced due to the recess of the crotch 22, allowing the sealing gasket 100 to have a certain elastic deformation in the width direction W during installation, reducing the risk of uncertain deformation and bending when under the action of the medium pressure.

[0035] In some embodiments, such as Figure 3As shown, along the length direction L of the sealing gasket 100, the sealing gasket 100 includes a straight portion 40 and a bent portion 50. Among them, the sealing gasket 100 is provided with a support protrusion 60 on the side wall of the bent portion 50, and the support protrusion 60 protrudes away from the side wall along the width direction W.

[0036] When the sealing gasket 100 is installed in the sealing groove 200, the support protrusion 60 is used to abut against the inner wall of the sealing groove 200, thereby increasing the contact stiffness between the sealing gasket 100 and the inner wall of the sealing groove 200, and ensuring the stability and sealing performance of the sealing gasket 100 during assembly and use.

[0037] In some embodiments, along the length direction L of the sealing gasket 100, the support protrusion 60 is provided in the middle of the bent portion 50. The bent portion 50 has a stronger structural stiffness than the straight portion 40, and can more effectively resist the deformation caused by external forces, avoiding the inclination or collapse of the sealing gasket 100 during installation.

[0038] After the sealing gasket 100 is installed in the sealing groove 200, the support protrusion 60 is elastically deformed by the extrusion of the groove wall of the sealing groove 200, increasing the connection friction force between the sealing gasket 100 and the sealing groove 200. Therefore, by providing the support protrusion 60 in the middle of the bent portion 50, the sealing gasket 100 can be firmly fixed in the sealing groove 200, avoiding the sealing gasket 100 falling off or being extruded and slipping out of the sealing groove 200 during installation.

[0039] In some embodiments, two support protrusions 60 are symmetrically provided on the two side walls of the bent portion 50 of the sealing gasket 100. Through the bilateral support, the sealing effect of the sealing gasket 100 is further optimized, ensuring that the sealing gasket 100 can be evenly stressed during assembly and use, and avoiding sealing defects caused by uneven unilateral stress.

[0040] In this embodiment, the sealing gasket 100 has a closed annular structure, that is, the sealing gasket 100 is joined end to end. Compared with an open gasket, the annular sealing gasket 100 does not need to be precisely aligned at both ends during assembly, simplifies the assembly process, and reduces the risk of sealing failure caused by assembly errors. The shape of the annular sealing gasket 100, whether it is circular, square or an irregular groove, is determined by the shape of the sealing groove 200.

[0041] Based on the same inventive concept, the present disclosure provides an optional one-way clutch, including: a plastic cover body, a sealing groove 200 is provided at the edge of the end face of the plastic cover body, and the width value of the sealing groove 200 is greater than the height value; the sealing gasket 100 as described above, and the sealing gasket 100 is installed in the sealing groove 200.

[0042] Among them, the width values of the bottom 20 and the top 10 of the sealing gasket 100 are both smaller than the width value W of the sealing groove 200. 槽 In this way, the smaller width value allows the sealing gasket 100 to more easily pass through the opening of the sealing groove 200, reducing the assembly difficulty, avoiding forced extrusion or damage caused by size mismatch, and the reasonable size design also extends the service life of the gasket and reduces the frequency of maintenance and replacement.

[0043] In addition, the width value of the sealing gasket 100 is only smaller than the width value W of the sealing groove 200. 槽 In this way, an appropriate fit between the sealing gasket 100 and the sealing groove 200 is achieved, which not only ensures that the sealing gasket 100 can be smoothly and unobstructedly assembled into the sealing groove 200, but also enables the side wall of the sealing groove 200 to easily lean against the groove wall of the sealing groove 200 under pressure, preventing deformation or slippage of the sealing gasket 100 caused by excessive extrusion or size mismatch, and ensuring that the sealing gasket 100 will not collapse when the medium pressure is loaded, thus ensuring good sealing performance and reducing the leakage risk.

[0044] The specific manner of implementing the functions realized in the optional one-way clutch in the above embodiments has been described in detail in the embodiments related to the sealing gasket 100, and will not be elaborated here.

[0045] It can be understood that "a plurality of" in the present disclosure means two or more, and other quantifiers are similar. Further, it can be understood that the terms "first", "second", etc. are used to describe various structures, but these structures should not be limited to these terms. These terms are only used to distinguish the same type of structures from each other, and do not represent a specific order or importance. In fact, the expressions such as "first" and "second" can be used interchangeably. For example, without departing from the scope of the present disclosure, the first structure can also be called the second structure, and similarly, the second structure can also be called the first structure.

[0046] Furthermore, it can be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this embodiment 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.

[0047] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0048] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A sealing gasket (100), characterized in that: The cross section of the sealing gasket is roughly in the shape of a "human" and includes the following features: Along the height direction (H) of the sealing gasket (100), it comprises: a top (10) and a bottom (20); Along the width direction (W) of the sealing gasket (100), the bottom (20) is arranged with two symmetrical inclined legs (21), and the two legs (21) are inclined in a direction away from the top (10).

2. The sealing gasket (100) according to claim 1, characterized in that: Along the height direction (H) of the sealing gasket (100), the sealing gasket (100) has a middle portion located between the top portion (10) and the bottom portion (20), and two side walls of the middle portion are recessed along the width direction (W) of the sealing gasket (100) to form a waist portion (30), and the waist portion (30) enables the top portion (10) to form a head portion (11).

3. The sealing gasket (100) according to claim 2, characterized in that: The top surface (12) of the head (11) is an arc-shaped surface and convex in a direction away from the bottom (20).

4. The sealing gasket (100) according to claim 1, characterized in that: A crotch portion (22) is provided between the two supporting legs (21) and is recessed toward the top portion (10). The crotch portion (22) enables the bottom portion (20) to form two spaced and inclined supporting legs (21).

5. The sealing gasket (100) according to claim 1, characterized in that: Along the length direction (L) of the sealing gasket (100), the sealing gasket (100) comprises a straight portion (40) and a curved portion (50). Wherein, the sealing gasket (100) is provided with a supporting protrusion (60) on the side wall of the curved portion (50), and the supporting protrusion (60) protrudes in a direction away from the side wall along the width direction (W).

6. The sealing gasket (100) according to claim 5, characterized in that: Along the length direction (L) of the sealing gasket (100), the supporting protrusion (60) is arranged in the middle of the curved portion (50).

7. The sealing gasket (100) according to claim 5, characterized in that: The two side walls of the sealing gasket (100) at the bent portion (50) are symmetrically provided with two supporting protrusions (60).

8. The sealing gasket (100) according to claim 1, characterized in that: The sealing gasket (100) is in a closed annular structure.

9. A selectable one-way clutch, characterized in that: include: A plastic cover body, wherein a sealing groove (200) is arranged at the edge of the end surface of the plastic cover body, and the width value (W 槽 ) is greater than the height value (H 槽 ); The sealing gasket (100) according to any one of claims 1 to 8, wherein the sealing gasket (100) is installed in the sealing groove (200), wherein the width values ​​of the bottom (20) and the top (10) of the sealing gasket (100) are both smaller than the width value (W) of the sealing groove (200). 槽 ).

10. The selectable one-way clutch according to claim 9, characterized in that: The top surface (12) of the top (10) of the sealing gasket (100) is an arc-shaped surface, and after the sealing gasket (100) is installed in the sealing groove (200), the top (10) protrudes from the sealing groove (200).

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