A seal, a flange bolt and a vehicle

Abstract

The application relates to the technical field of vehicles, and provides a sealing piece, a flange bolt and a vehicle. The sealing piece provided by the application comprises a connecting part and an adsorbing part. The connecting part is suitable for interference fit with a fastener at least in a radial direction. The adsorbing part is suitable for being adsorbed to at least part of the outer surface of a to-be-mounted part, and the adsorbing part is integrally formed with the connecting part.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a seal, flange bolt, and vehicle. Background Technology

[0002] In related technologies, steel paper gaskets, asbestos-free paper, or foam and other elastomeric materials are used as sealing elements to achieve the sealing function at the screw-in fixing points of products such as side door and rear door hinges, gas springs, lock bodies, and lock rings. Alternatively, projection welding ring fasteners and sheet metal interlayer sealant are used to achieve the sealing of the installation points at the screw-in fixing points. The above sealing methods have problems such as easy attenuation of sealing gaskets, reduced connection stiffness, poor durability, and defects in welding sealing processes. Summary of the Invention

[0003] This application aims to solve problems in related technologies and proposes a seal, flange bolt, and vehicle.

[0004] This application provides a sealing element, comprising:

[0005] The connecting part is adapted to have an interference fit with the fastener at least in the radial direction;

[0006] The adsorption part is adapted to adsorb onto at least a portion of the outer surface of the part to be installed, and the adsorption part is integrally formed with the connecting part.

[0007] In some alternative embodiments, the adsorption part is a flexible element, and / or the connecting part is a flexible element.

[0008] In some alternative embodiments, the adsorption portion includes a contact surface that, in the non-adsorption state, has at least a portion of a recessed area; and in the adsorption state, the contact surface is adapted to engage with at least a portion of the outer surface of the part to be installed.

[0009] In some alternative embodiments, the connecting part has a through hole along the axial direction, the through hole being suitable for fastener insertion, or the through hole is shaped as at least one of quadrilateral, hexagonal, octagonal, dodecagonal, circular knurled, or plum blossom, with the radial direction intersecting the axial direction.

[0010] This application also provides a flange bolt, comprising:

[0011] Bolt body,

[0012] The seal is adapted to have an interference fit with the bolt body in the radial direction.

[0013] In some alternative embodiments, the bolt body includes a first limiting portion disposed on the outer peripheral surface of the bolt body, the first limiting portion and the connection portion of the seal being interference-fitted at least in the radial direction.

[0014] In some alternative embodiments, the bolt body includes a second limiting portion disposed on the bottom surface of the bolt body. When the seal is fixed to the bolt body, the second limiting portion and the connection portion of the seal are interference-fitted at least in the axial direction. The bottom surface of the bolt body is adapted to contact at least a portion of the outer surface of the part to be installed.

[0015] In some alternative implementations, the seal is fixed to the bolt body by a press-fitting process.

[0016] In some alternative embodiments, the bolt body includes a threaded connection portion connected to a first limiting portion, at least a portion of which is adapted to pass through the part to be installed.

[0017] This application also provides a vehicle that includes the aforementioned seal, or the aforementioned flange bolts.

[0018] In summary, this application can achieve at least the following technical effects:

[0019] This application achieves a seal between the connecting part and the fastener through an interference fit in the radial direction; a seal between the adsorption part and the part to be installed is achieved through the adsorption force between the adsorption part and at least part of the outer surface of the part to be installed; and a seal between the fastener and the part to be installed is achieved through the integral molding of the adsorption part and the connecting part, thereby improving the sealing performance of the seal. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the sealing element in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the bolt body in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the flange bolt assembly in an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the flange bolt assembly in an embodiment of this application;

[0024] Figure 5 This is a cross-sectional view of the flange bolts in the embodiments of this application.

[0025] Figure label:

[0026] 100. Seal; 110. Connecting part; 112. Inner connecting surface; 113. Lower connecting surface; 120. Adsorption part; 121. Contact surface; 130. Through hole;

[0027] 200 Bolt body; 210 First limiting part; 211 Upper recessed surface; 212 Side recessed surface; 220 Bottom surface of bolt body; 221 Second limiting part; 222 Bottom plane; 230 Threaded connection part; 240 Operating part;

[0028] 300. Flange bolts;

[0029] 400. Vehicle; 410. Components to be installed. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] Example 1:

[0037] like Figure 1 As shown, Embodiment 1 of this application provides a sealing element 100, comprising:

[0038] Connection portion 110, the connection portion 110 is adapted to have an interference fit with the fastener at least in the radial direction;

[0039] The adsorption part 120 is adapted to adsorb onto at least a portion of the outer surface of the part to be installed, and the adsorption part 120 is integrally formed with the connecting part 110.

[0040] The radial interference fit between the connecting part 110 and the fastener achieves a seal between the connecting part 110 and the fastener, preventing the seal 100 from falling off during transportation or use, ensuring uniform stress on the sealing surface, and avoiding seal failure due to excessive local stress. The adsorption force between the adsorption part 120 and at least part of the outer surface of the part to be installed achieves a seal between the adsorption part 120 and the part to be installed, enhancing the structural stability of the seal 100, effectively preventing the seal 100 and flange bolts 300 from falling off, and improving assembly reliability. The integral molding of the adsorption part 120 and the connecting part 110, along with the seal 100, achieves a seal between the fastener and the part to be installed, improving the sealing performance of the seal 100.

[0041] By employing the interference fit between the bolt flange and the polygonal shoulder of the elastomer, the vacuum sealing principle, and the anti-rotation and anti-detachment structural design, the technical effects of improved sealing performance, enhanced clamping force retention, and structural stability are achieved, and it is applicable to various scenarios such as vehicle body bolt joints.

[0042] The fastener can be a bolt body 200, a nut, or a mounting surface of a component. Specifically, the nut can be a blind hole assembly nut. The mounting surface of the component can be provided with a step or shoulder-like structure, thereby achieving an interference fit with the connection part 110 through the step or shoulder-like structure. The part to be installed can be any mounting surface that needs to be fixed, such as the body of a vehicle, the tabletop of a table, or the robotic arm of a robot.

[0043] In some alternative embodiments, the adsorption portion 120 is a flexible element, and / or the connecting portion 110 is a flexible element.

[0044] By making the adsorption part 120 a flexible member, the adsorption part 120 can adapt to the deformation requirements of different surfaces, thereby improving the adaptability of the seal 100 between the adsorption part 120 and the part to be installed. By making the connecting part 110 a flexible member, the connecting part 110 can adapt to the deformation requirements of different surfaces, thereby improving the adaptability of the seal 100 between the connecting part 110 and the fastener.

[0045] In some alternative embodiments, the adsorption portion 120 includes a contact surface 121, which is recessed in at least a portion when not adsorbed; and in the adsorption state, the contact surface 121 is adapted to adsorb at least a portion of the outer surface of the part to be installed.

[0046] When the adsorption part 120 is recessed in the unadsorbed state, a cavity is formed between the seal 100 and at least a portion of the outer surface of the part to be installed when the seal 100 initially contacts the part to be installed. Then, by applying pressure to the seal 100 in the radial direction towards the part to be installed, the adsorption part 120 deforms, and the gas in the cavity formed by the recess is squeezed out, thereby forming a negative pressure zone between the seal 100 and the part to be installed. Due to the action of external atmospheric pressure, the adsorption part 120 and at least a portion of the outer surface of the part to be installed are pressed tightly together, thereby forming a vacuum negative pressure between the adsorption part 120 and at least a portion of the outer surface of the part to be installed. This improves the adsorption force and sealing effect between the seal 100 and the part to be installed, enhances the uniform distribution of adsorption force, and avoids sealing failure caused by local stress concentration.

[0047] In some alternative embodiments, the connecting portion 110 has a through hole 130 along the axial direction, the through hole 130 being suitable for fastener insertion, or the through hole 130 is shaped as at least one of quadrilateral, hexagonal, octagonal, dodecagonal, circular knurled, or plum blossom, with the radial direction intersecting the axial direction.

[0048] By designing diverse through-hole shapes, the fitting accuracy between the connector 110 and the fastener is improved, preventing seal failure caused by circumferential rotation between the connector 110 and the fastener.

[0049] Seal 100 is made of corrosion-resistant material to meet the long-term use requirements under complex working conditions.

[0050] The bottom of the adsorption part 120 is provided with a sealing lip in the axial direction. The shape of the sealing lip can be deformed and expanded according to the shape of the part to be installed.

[0051] Example 2:

[0052] Embodiment 2 of this application provides a flange bolt 300, comprising:

[0053] Bolt body 200,

[0054] The seal 100 is adapted to have an interference fit with the bolt body 200 in the radial direction.

[0055] The seal 100 clamps with the bolt body 200 via the connecting part 110 and seals with the part to be installed via the adsorption part 120. This separates the clamping and sealing functions, reducing the impact of the seal 100 on the stiffness of the bolt body 200 and ensuring the clamping force is maintained over a long period. The connecting parts 110 of the seal 100 can be distributed along the edge of the bolt body 200. The outer circumferential surface of the bolt body 200 is a polygonal shoulder surface. The connection between the seal 100 and the bolt body 200 is achieved through the small-sized connecting parts 110, offering advantages such as miniaturization and low cost.

[0056] In some alternative embodiments, the bolt body 200 includes a first limiting portion 210 disposed on the outer peripheral surface of the bolt body 200, and the first limiting portion 210 and the connecting portion 110 of the seal 100 are interference-fitted at least in the radial direction.

[0057] The outer peripheral surface of the bolt body 200 is the outer peripheral surface of the bolt body 200 in the radial direction. The first limiting part 210 is a groove, protrusion, or tongue and groove provided at least partially along the outer peripheral surface of the bolt body 200. The first limiting part 210 is used to improve and eliminate the matching deviation between the bolt body 200 and the seal 100, reserve deformation space for the seal 100, and alleviate the influence of the excessive design compression of the seal 100 on the clamping force between the bolt body 200 and the seal 100.

[0058] like Figure 1 , Figure 2 As shown, a first limiting part 210 is formed on the outer peripheral surface of the bolt body 200. A 7-shaped groove is formed by the upper recessed surface 211 and the side recessed surface 212. The upper recessed surface 211 contacts the upper connecting surface of the connecting part 110, and the side recessed surface 212 contacts the inner connecting surface 112 of the connecting part 110. The radial dimension of the side recessed surface 212 is larger than the radial dimension of the inner connecting surface 112, thereby making the connecting part 110 and the bolt body 200 interference fit in the radial direction, improving the fixing effect of the bolt body 200 and the seal 100 in the radial direction, reducing assembly errors, and improving sealing performance.

[0059] In addition, the groove can also form a side opening groove through the upper recessed surface 211, the side recessed surface 212, and the lower recessed surface. The upper recessed surface 211 contacts the upper connecting surface (not shown in the figure) of the connecting part 110, the side recessed surface 212 contacts the inner connecting surface 112 of the connecting part 110, and the lower recessed surface contacts the lower connecting surface 113 of the connecting part 110. The radial cross-sectional shape of the side recessed surface 212 of the groove matches the radial cross-sectional shape of the through hole 130 on the sealing element 100, which improves the fitting accuracy between the connecting part 110 and the bolt body 200 and prevents the seal failure caused by the circumferential rotation between the connecting part 110 and the bolt body 200. The radial dimension of the side recessed surface 212 is larger than the radial dimension of the inner connecting surface 112, thereby making the connecting part 110 and the bolt body 200 have an interference fit in the radial direction; the distance between the upper recessed surface 211 and the lower recessed surface is the first axial distance, and the distance between the upper connecting surface and the lower connecting surface 113 of the connecting part 110 is the second axial distance. The first axial distance is smaller than the second axial distance, thereby achieving an interference fit between the connecting part 110 and the bolt body 200 in the axial direction, improving the fixing effect of the bolt body 200 and the seal 100 in the radial and axial directions, reducing assembly errors, and improving sealing performance.

[0060] The radial cross-sectional shape of the first limiting part 210 matches the radial cross-sectional shape of the through hole 130 on the seal 100, and the radial dimension of the first limiting part 210 is larger than the radial dimension of the through hole 130 of the connecting part 110, thereby making the connecting part 110 and the bolt body 200 interference fit in the radial direction. For example, when the first limiting part 210 is a groove, the radial cross-sectional shape of the bottom of the groove matches the shape of the through hole 130, and the radial dimension of the bottom of the groove is larger than the radial dimension of the through hole 130.

[0061] By setting the first limiting part 210, the displacement of the seal 100 in the radial direction is further restricted, preventing the seal 100 from shifting during rotation and improving the durability of the structure.

[0062] In some alternative embodiments, the bolt body 200 includes a second limiting portion 221 disposed on the bottom surface 220 of the bolt body. When the seal 100 is fixed to the bolt body 200, the second limiting portion 221 and the connecting portion 110 of the seal 100 are press-fitted at least in the axial direction. The bottom surface 220 of the bolt body is adapted to contact at least a portion of the outer surface of the part to be installed.

[0063] The second limiting part 221 limits the sealing member 100 to an upper limit in the axial direction, ensuring the stability of the sealing member 100 during long-term use and improving the fixing effect of the sealing member 100.

[0064] The bottom surface 220 of the bolt body is the side surface of the bolt body 200 that contacts at least a portion of the outer surface of the workpiece to be installed in the axial direction; the side surface of the bolt body 200 that is opposite to at least a portion of the outer surface of the workpiece to be installed in the axial direction is the top surface of the bolt body 200 (not shown in the figure). Figure 3 As shown, the bottom surface 220 of the bolt body includes a second limiting portion 221 and a bottom surface plane 222. The second limiting portion 221 protrudes from the bottom surface plane 222, allowing pressure to be applied to the second limiting portion 221 during press-fitting. Preferably, as... Figure 2 As shown, the second limiting part 221 is a triangular protrusion with its vertex facing away from the bottom plane 222, as... Figure 4 As shown, the second limiting part 221 can deform in the direction of the side recessed surface 212 under pressure, and then contact the lower connecting surface 113 of the connecting part 110. This creates a clamping force on the connecting part 110 between the deformed second limiting part 221 and the upper recessed surface 211, thereby achieving an interference fit between the connecting part 110 and the bolt body 200 in the axial direction. This improves the fixing effect of the bolt body 200 and the seal 100 in the radial and axial directions, reduces assembly errors, and enhances sealing performance.

[0065] In some alternative embodiments, the seal 100 is fixed to the bolt body 200 by a press-fitting process.

[0066] The sealing element 100 and the bolt body 200 are fixed by press fitting, ensuring a tight fit between the connecting part 110 and the bolt body 200, reducing assembly errors, reducing assembly time, and improving production efficiency.

[0067] The connecting part 110 of the sealing element 100 is the object of the press-fitting process, so that the connecting part 110, which is in an interference fit with the bolt body 200 in the radial direction, undergoes elastic deformation under the action of clamping force, thereby achieving the sealing and waterproofing functions with the first limiting part 210 of the bolt body 200.

[0068] The second limiting part 221 on the bottom surface of the bolt body 200 can also be used as the object of the press-fitting process. The press-fitting process causes the protruding second limiting part 221 to deform, so that the second limiting part 221 contacts the lower connecting surface 113 of the connecting part 110 and generates a clamping force. Thus, the second limiting part 221 and the recessed surface 211 on the first limiting part 210 form a clamping force on the connecting part 110, thereby avoiding the risk of the seal 100 and the bolt body 200 moving and falling off in the axial direction, and improving the sealing performance and waterproof performance between the seal 100 and the bolt body 200.

[0069] In some alternative embodiments, the bolt body 200 includes a threaded connection portion 230 connected to a first limiting portion 210, and at least a portion of the threaded connection portion 230 is adapted to pass through the part to be installed.

[0070] The thread shape of the threaded connection part 230 is not specifically limited. By setting the threaded connection part 230, the bolt body 200 and the part to be installed can be quickly fixed, thereby improving assembly efficiency.

[0071] The bolt body 200 also includes an operating part 240, which is disposed opposite to the threaded connection part 230. The operating part 240 is used as the input end of the installation force so as to fix the flange bolt 300 to the part to be installed through the threaded connection part 230.

[0072] Example 3:

[0073] Embodiment 3 of this application provides a vehicle 400, which includes the aforementioned seal 100 or the aforementioned flange bolt 300.

[0074] like Figure 5 As shown, the flange bolt 300 is adsorbed onto the part 410 to be installed by a press-fitting process, so that the contact surface 121 of the adsorption part 120 is adsorbed with at least a part of the outer surface of the part 410 to be installed in the adsorption state. A vacuum negative pressure is generated between the adsorption part 120 of the sealing member 100 and at least a part of the outer surface of the part 410 to be installed, thereby ensuring a tight fit between the flange bolt 300 and the part 410 to be installed and reducing assembly errors.

[0075] Sealant or sealant can be applied between the flange bolt 300 and the part to be installed 410. A gasket can be placed between the flange bolt 300 and the part to be installed 410.

[0076] The sealing of the bolted fixing points on vehicle 400 is achieved by using the aforementioned sealing element 100, or by using the aforementioned flange bolts 300 on vehicle 400. The bolted connection effectively solves the problems of insufficient rigidity and poor corrosion resistance of the sealing gasket in traditional flange bolts 300, thereby improving the sealing performance of the bolted fixing points of the entire vehicle.

[0077] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A sealing element (100), characterized in that, include: A connecting portion (110) is adapted to have an interference fit with a fastener at least in the radial direction; The adsorption part (120) is adapted to adsorb onto at least a portion of the outer surface of the part to be installed, and the adsorption part (120) is integrally formed with the connecting part (110).

2. The seal (100) as claimed in claim 1, characterized in that, The adsorption part (120) is a flexible part, and / or the connecting part (110) is a flexible part.

3. The seal (100) as claimed in claim 1, characterized in that, The adsorption part (120) includes a contact surface (121), which is recessed in at least a portion of the contact surface (121) in the non-adsorption state; and in the adsorption state, the contact surface (121) is adapted to adsorb at least a portion of the outer surface of the part to be installed.

4. The seal (100) as described in any one of claims 1-3, characterized in that, The connecting part (110) has a through hole (130) in the axial direction. The through hole (130) is suitable for the fastener to be inserted. Alternatively, the through hole (130) is in the shape of at least one of quadrilateral, hexagon, octagon, dodecagon, circular knurled, and plum blossom. The radial direction intersects the axial direction.

5. A flange bolt (300), characterized in that, include: Bolt body (200). The seal (100) according to any one of claims 1-4 is adapted to have an interference fit with the bolt body (200) in the radial direction.

6. The flange bolt (300) as described in claim 5, characterized in that, The bolt body (200) includes a first limiting portion (210) disposed on the outer peripheral surface of the bolt body (200), and the first limiting portion (210) and the connecting portion (110) of the seal (100) are interference-fitted at least in the radial direction.

7. The flange bolt (300) as described in claim 6, characterized in that, The bolt body (200) includes a second limiting portion (221) disposed on the bottom surface (220) of the bolt body. When the seal (100) is fixed on the bolt body (200), the second limiting portion (221) and the connecting portion (110) of the seal (100) are interference-fitted at least in the axial direction. The bottom surface (220) of the bolt body is adapted to contact at least a portion of the outer surface of the part to be installed.

8. The flange bolt (300) as described in claim 7, characterized in that, The seal (100) is fixed to the bolt body (200) by a press-fitting process.

9. The flange bolt (300) as described in any one of claims 6-8, characterized in that, The bolt body (200) includes a threaded connection portion (230) connected to the first limiting portion (210), and at least a portion of the threaded connection portion (230) is adapted to pass through the part to be installed.

10. A vehicle (400), characterized in that, The vehicle (400) includes a seal (100) as described in any one of claims 1-4, or a flange bolt (300) as described in any one of claims 5-9.

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