Fasteners and vehicles

Abstract

This utility model discloses a fastener and a vehicle. The fastener includes a flange portion and a sealing portion. The flange portion has a flange face for contacting a mating part, and a receiving groove is provided on the flange face. The sealing portion is disposed within the receiving groove. The fastener provided by this utility model has the advantage of high sealing performance between the fastener and the mating part.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a fastener and a vehicle. Background Technology

[0002] In related technologies, after the threaded parts such as flow drill screws are connected, the flange face on them will be tilted relative to the plate face of the other part by a certain proportion (the tilt is about 5°-10° according to actual process experience). This will cause sealing problems at the threaded connection during actual use, and the product cannot meet the sealing requirements well. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a fastener that has the advantage of high sealing performance between the fastener and the component.

[0005] An embodiment of this utility model also proposes a vehicle.

[0006] The fastener of this utility model embodiment includes a flange portion and a sealing portion. The flange portion has a flange surface for contacting the counters, and a receiving groove is provided on the flange surface. The sealing portion is disposed in the receiving groove.

[0007] According to the embodiments of the present invention, the fastener has a receiving groove on the flange surface of the flange and a sealing part in the receiving groove. After the flange is connected to the matching part, the sealing part can be clamped between the flange and the matching part by its expansion deformation and / or a part of the matching part extending into the receiving groove. At this time, even if the matching part is slightly deviated from the flange face of the flange, the sealing part can still have sufficient elastic variation margin to ensure that it is stably clamped between the flange and the matching part, effectively ensuring the connection sealing between the fastener and the matching part.

[0008] In some embodiments, the sealing portion includes an expandable adhesive capable of expanding upon heat, wherein the heated sealing portion partially fills, encloses, or partially protrudes from the receiving groove.

[0009] In some embodiments, the depth of the receiving groove is m, where 1.35mm ≤ m ≤ 1.45mm.

[0010] In some embodiments, the sealing portion includes a sealing gasket, and the maximum thickness of the sealing portion in the depth direction of the receiving groove is n, wherein 0.25mm≤mn≤0.35mm.

[0011] In some embodiments, the fastener further includes a rod portion disposed on the flange surface, and the receiving groove is an annular groove coaxially disposed with the rod.

[0012] In some embodiments, the receiving groove includes an inner side and an outer side that are radially opposite to each other along the rod, with a portion of the outer peripheral surface of the rod forming the inner side.

[0013] In some embodiments, the flange portion is provided with a threaded hole, and the receiving groove is an annular groove surrounding the threaded hole.

[0014] In some embodiments, the inner diameter of the sealing portion is equal at any position along the axial direction of the rod portion, wherein,

[0015] The outer diameter of the sealing part is equal at any position along the axial direction of the rod, or the outer diameter of the sealing part at any position along the axial direction of the rod gradually decreases and / or decreases in a stepwise manner from one end of the rod connected to the flange to the other end.

[0016] In some embodiments, the inner diameter of the sealing part is larger than the inner diameter of the receiving groove, and the difference between the inner diameter of the sealing part and the inner diameter of the receiving groove is a, wherein 0.3mm≤a≤0.5mm;

[0017] The maximum outer diameter of the sealing part is smaller than the outer diameter of the annular groove, and the difference between the maximum outer diameter of the sealing part and the outer diameter of the annular groove is b, wherein 0.3mm≤b≤0.5mm.

[0018] The vehicle according to an embodiment of the present invention includes fasteners as described in any of the above embodiments.

[0019] The technical advantages of the vehicle according to the present utility model embodiment are the same as the technical advantages of the fastener in the above embodiment, and will not be repeated here.

[0020] In some embodiments, the surface of the counter piece facing the flange face is provided with a second annular groove, the second annular groove is connected to the receiving groove, and the sealing part is filled with the second annular groove after thermal expansion. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a fastener according to an embodiment of the present utility model.

[0022] Figure 2 This is an exploded view of the fastener according to an embodiment of the present utility model.

[0023] Figure 3 This is a cross-sectional view of the flange and rod portion of a fastener according to an embodiment of the present utility model.

[0024] Figure 4 yes Figure 3 A magnified view of a portion of the annular groove.

[0025] Figure 5 This is a cross-sectional view of the sealing portion in a fastener according to an embodiment of the present invention.

[0026] Figure label:

[0027] 1. Flange section; 11. Annular groove; 12. Flange face; 2. Stem section; 3. Sealing section. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The following is combined Figures 1-5 Describes fasteners according to embodiments of the present invention.

[0030] The fastener of this embodiment includes a flange portion 1 and a sealing portion 3. The flange portion 1 has a flange surface 12 for contacting the wearer, and a receiving groove 11 is provided on the flange surface 12. The sealing portion 3 is disposed in the receiving groove 11.

[0031] According to the embodiment of the present invention, the fastener has a receiving groove 11 on the flange face 12 of the flange 1 and a sealing part 3 in the receiving groove 11. After the flange 1 is connected to the counter, the sealing part 3 can be clamped between the flange 1 and the counter by its expansion deformation and / or a part of the counter extending into the receiving groove 11. At this time, even if the counter has a certain deviation relative to the flange face 12 of the flange 1, the sealing part 3 can still have sufficient elastic variation margin to ensure that it is stably clamped between the flange 1 and the counter, effectively ensuring the connection sealing between the fastener and the counter.

[0032] It should be noted that the fastener can be any one of hexagonal flange bolts, rivet nuts, rivet studs and weld nuts. When it is a hexagonal flange bolt or a rivet stud, the fastener also includes a rod 2 with external threads connected to the flange part 1. When it is a rivet nut or a weld nut, the flange part 1 is provided with a threaded hole accordingly.

[0033] In some embodiments, the sealing portion 3 includes an expandable adhesive that can expand when heated, and the heated sealing portion 3 partially fills, is completely filled, or partially protrudes from the receiving groove 11.

[0034] That is, after the flange 1 is connected to the mating part, the sealing part 3 is heated so that a portion of the sealing part 3 protrudes from the receiving groove 11. At this time, even if the flange face 12 of the flange 1 is slightly misaligned with the surface of the mating part facing the flange 1, the portion of the sealing part 3 protruding from the receiving groove 11 can fill and seal the gap between the flange 1 and the mating part, effectively ensuring the sealing performance of the connection between the fastener and the mating part. Alternatively, the heated sealing part 3 may partially fill or completely fill the receiving groove 11, giving it a larger elastic variation margin compared to before heating, allowing it to be more reliably clamped between the flange 1 and the mating part.

[0035] For example, before heating, the sealing part 3 is entirely located within the receiving groove 11, thereby effectively preventing a portion of the sealing part 3 from being pulled out of the receiving groove 11 by the receiving part when the flange part 1 is mated with the matching part, thus affecting the sealing performance of the connection between the flange part 1 and the matching part after assembly.

[0036] It should be noted that when the fasteners of this embodiment are applied to vehicle assembly, after the fasteners are connected to the vehicle's components, the expansion and deformation of the sealing portion 3 will be completed during the subsequent electrophoresis process, without the need for separate heating, thereby effectively reducing vehicle assembly costs. Specifically, the sealing portion 3 of this embodiment can complete its expansion and deformation at 160°C for 30 minutes.

[0037] In some embodiments, the coefficient of thermal expansion of the sealing portion 3 is 5.5-7.

[0038] That is, after the sealing part 3 expands at the set temperature, its volume is approximately 550%-700% of the original volume. This ensures that the part of the sealing part 3 that protrudes from the receiving groove 11 after expansion has a sufficiently large volume, so that even when the flange face 12 is tilted to the maximum angle relative to the surface of the counterpart, it can still seal the gap between the flange part 1 and the counterpart, resulting in a higher sealing performance between the fastener and the counterpart.

[0039] Specifically, the sealing part 3 expands and deforms at the process temperature (180℃-200℃) during the electrophoresis process. When it expands and clamps between the flange part 1 and the matching part, it can meet the sealing requirements under high temperature of 200℃ and high temperature and humidity aging environment of double 85℃. The expansion coefficient of the sealing part 3 can be 5.5, 6, 6.5 and 7.

[0040] It should be noted that when the flange 1 is connected to the counter piece and there is no misalignment between them, a receiving space is defined between the surface of the counter piece facing the flange 1 and the receiving groove 11. The expanded sealing part 3 can completely fill the receiving space to further ensure the sealing performance of the connection between the flange 1 and the counter piece. At this time, the expansion coefficient of the expanded sealing part 3 is less than its minimum expansion coefficient.

[0041] In some embodiments, the depth of the receiving groove 11 is m, where 1.35mm ≤ m ≤ 1.45mm.

[0042] This design ensures, on the one hand, that the receiving groove 11 has a sufficiently large capacity, thereby allowing the sealing part 3, which is located within the receiving groove 11, to have a sufficiently large volume, effectively sealing the gap between the flange part 1 and the hand fitting before reaching its maximum expansion volume. On the other hand, it also prevents the receiving groove 11 from being too deep, which would reduce the strength of the flange part 1.

[0043] Specifically, the depth m of the receiving groove 11 can be 1.35 mm, 1.4 mm, or 1.45 mm.

[0044] In some embodiments, the sealing part 3 includes a sealing gasket, and the maximum thickness of the sealing part 3 in the depth direction of the receiving groove 11 is n, wherein 0.25mm≤mn≤0.35mm.

[0045] In other words, before expansion, the sealing part 3 is completely located within the receiving groove 11. Therefore, after the fastener is assembled, during transportation, loading, and assembly, the sealing part 3 is less susceptible to external interference and collisions, thus reducing the likelihood of loosening, misalignment, or even detachment. Furthermore, when the flange 1 is connected to the matching part, the sealing part 3 will not deform or misalign due to interference from the matching part, effectively ensuring the sealing stability between the flange 1 and the matching part. Simultaneously, by setting the difference between m and n to no more than 0.35mm, the sealing part 3 has sufficient volume, ensuring that after expansion it has a sufficiently large volume to tightly fill the gap between the flange 1 and the matching part.

[0046] Specifically, the thickness of the sealing part 3 is equal at any position, and the depth of the receiving groove 11 is equal at any position. The difference between the two can be 0.25mm, 0.27mm, 0.3mm and 0.35mm.

[0047] In some embodiments, such as Figures 1-4 As shown, the fastener also includes a rod 2, which is disposed on the flange face 12, and the receiving groove 11 is an annular groove coaxially disposed with the rod 2.

[0048] The fasteners are bolts or studs such as hexagonal flange bolts and rivet studs. The expanded sealing part 3 protrudes from the receiving groove 11 and largely covers and surrounds the rod part 2. As a result, the part of the sealing part 3 protruding from the receiving groove 11 can more fully fill and block the gap between the flange part 1 and the counterslip, better separating the rod part 2 from the outside world, and the connection between the fastener and the counterslip has a higher sealing performance.

[0049] Specifically, the rod 2 is provided with external threads, and the rod 2 is used to be threadedly connected to the threaded hole on the counterpart. When the flange 1 is misaligned relative to the counterpart, the part of the sealing part 3 that protrudes from the receiving groove 11 will also partially fill the threaded hole of the counterpart.

[0050] In some embodiments, such as Figures 2-4 As shown, the receiving groove 11 includes an inner side and an outer side that are radially opposite to each other along the rod portion 2, and a portion of the outer peripheral surface of the rod portion 2 forms the inner side.

[0051] The inner diameter of the receiving groove 11 is also the outer diameter of the rod 2 at the flange 1. When assembling the sealing part 3, the sealing part 3 is fitted onto the rod 2 and mates with the receiving groove 11, allowing the sealing part 3 to be more easily embedded into the receiving groove 11. Compared to the design in related technologies where the inner diameter of the receiving groove 11 is larger than the outer diameter of the rod 2 at the flange 1, this embodiment effectively avoids the sealing part 3 being blocked by the flange face 12 that connects to the rod 2, resulting in incomplete assembly. The fasteners and fittings after assembly have higher reliability and sealing performance. Compared to the design in related technologies where the inner diameter of the receiving groove 11 is smaller than the outer diameter of the rod 2 at the flange 1, this embodiment effectively reduces the processing difficulty of the receiving groove 11.

[0052] Specifically, the inner and outer surfaces of the receiving groove 11 are both circumferential surfaces whose axes are collinear with the axis of the rod 2.

[0053] In some embodiments, the flange 1 is provided with a threaded hole, and the receiving groove 11 is an annular groove surrounding the threaded hole.

[0054] That is, when the fastener is a rivet nut or a weld nut, it can also achieve a sealed connection with the mating part through the sealing part 3, making the fastener applicable to a wider range of scenarios. The expanded sealing part 3 protrudes from the receiving groove 11 and generally surrounds the threaded rod in the threaded hole, so that the part of the sealing part 3 protruding from the receiving groove 11 can more fully fill and seal the gap between the flange part 1 and the mating part, resulting in a higher sealing performance between the fastener and the mating part.

[0055] In some embodiments, the inner diameter of the sealing portion 3 at any position in the axial direction of the rod portion 2 is equal, wherein the outer diameter of the sealing portion 3 at any position in the axial direction of the rod portion 2 is equal, or the outer diameter of the sealing portion 3 at any position in the axial direction of the rod portion 2 gradually decreases and / or decreases stepwise from one end of the rod portion 2 connected to the flange portion 1 to the other end.

[0056] That is, the sealing part 3 is a gasket structure with equal thickness at any position. After expansion, the thickness of the portion protruding from the receiving groove 11 is equal at any position. In this case, no matter which direction the flange face 12 is tilted relative to the surface of the mating part, the portion of the sealing part 3 protruding from the receiving groove 11 can effectively seal the gap between the flange part 1 and the mating part. Alternatively, the sealing part 3 can also form a boss-like structure at the end away from the flange part 1, thereby achieving that the thickness of the portion protruding from the annular groove 11 after expansion gradually decreases or decreases in a stepwise manner from the outer surface of the rod part 2 along the radial direction of the rod part 2. This setting can ensure that the sealing part 3 after expansion can fill the gap between the flange part 1 and the mating part, while also effectively reducing the volume and cost of the sealing part 3.

[0057] Specifically, the sealing part 3 is a prefabricated component whose shape is fixed before expansion, such as... Figure 1 and Figure 2 As shown, the sealing part 3 is a hollow cylindrical structure, such as... Figure 5 As shown, the sealing part 3 is divided into two sections along its axial direction. The section adjacent to the flange part 1 is a hollow cylindrical structure, and the section away from the flange part 1 is a hollow frustum structure.

[0058] In some embodiments, the inner diameter of the sealing part 3 is larger than the inner diameter of the receiving groove 11, and the difference between the inner diameter of the sealing part 3 and the inner diameter of the receiving groove 11 is a, wherein 0.3mm ≤ a ≤ 0.5mm. The maximum outer diameter of the sealing part 3 is smaller than the outer diameter of the receiving groove 11, and the difference between the maximum outer diameter of the sealing part 3 and the outer diameter of the receiving groove 11 is b, wherein 0.3mm ≤ b ≤ 0.5mm.

[0059] That is, the sealing part 3 is fitted into the receiving groove 11 with a clearance, which makes the fastener assembly easier and more efficient.

[0060] Specifically, the difference between the inner diameter of the sealing part 3 and the inner diameter of the receiving groove 11 can be 0.3mm, 0.4mm and 0.5mm, and the difference between the maximum outer diameter of the sealing part 3 and the outer diameter of the receiving groove 11 can be 0.3mm, 0.4mm and 0.5mm.

[0061] The vehicle according to the present invention includes fasteners as described in any of the above embodiments.

[0062] The technical advantages of the vehicle according to the present utility model embodiment are the same as the technical advantages of the fastener in the above embodiment, and will not be repeated here.

[0063] In some embodiments, a second annular groove is provided on the surface of the hand member facing the flange face 12. The second annular groove is connected to the receiving groove 11, and the sealing part 3, after being heated and expanded, fills the second annular groove.

[0064] This allows the portion of the expanded sealing part 3 that protrudes from the receiving groove 11 to have a larger volume. After this portion fills the second annular groove, the contact area between it and the countersing member is larger, thereby more reliably separating the rod part 2 from the outside world and improving the sealing performance of the connection between the fastener and the countersing member.

[0065] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "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 are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0066] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this utility model, unless otherwise explicitly 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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0068] In this utility model, unless otherwise explicitly 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.

[0069] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. 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.

[0070] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A fastener, characterized by, include: A flange portion having a flange face for contacting a matching component, the flange face having a receiving groove; A sealing part is disposed within the receiving groove.

2. The fastener of claim 1, wherein, The sealing part includes an expandable adhesive that can expand when heated, and the heated sealing part partially fills, fills, or protrudes from the receiving groove.

3. The fastener of claim 1, wherein, The depth of the receiving groove is m, where 1.35mm ≤ m ≤ 1.45mm.

4. The fastener according to claim 3, characterized in that, The sealing part includes a sealing gasket, and the maximum thickness of the sealing part in the depth direction of the receiving groove is n, wherein 0.25mm≤mn≤0.35mm.

5. The fastener of any one of claims 1-4, wherein, The fastener also includes a rod portion disposed on the flange surface, and the receiving groove is an annular groove coaxially disposed with the rod portion.

6. The fastener of claim 5, wherein, The receiving groove includes an inner side and an outer side that are radially opposite to each other along the rod, with a portion of the outer peripheral surface of the rod forming the inner side.

7. The fastener of any one of claims 1-4, wherein, The flange is provided with a threaded hole, and the receiving groove is an annular groove surrounding the threaded hole.

8. The fastener according to claim 5, characterized in that, The inner diameter of the sealing part is the same at any position along the axial direction of the rod, wherein, The outer diameter of the sealing part is equal at any position along the axial direction of the rod, or the outer diameter of the sealing part at any position along the axial direction of the rod gradually decreases and / or decreases in a stepwise manner from one end of the rod connected to the flange to the other end.

9. The fastener of claim 8, wherein, The inner diameter of the sealing part is larger than the inner diameter of the receiving groove, and the difference between the inner diameter of the sealing part and the inner diameter of the receiving groove is a, wherein 0.3mm≤a≤0.5mm; The maximum outer diameter of the sealing part is smaller than the outer diameter of the receiving groove, and the difference between the maximum outer diameter of the sealing part and the outer diameter of the receiving groove is b, wherein 0.3mm≤b≤0.5mm.

10. A vehicle characterized by comprising: It includes a counter and a fastener according to any one of claims 1-9, wherein the counter and the fastener are connected.

11. The vehicle of claim 10, wherein, The surface of the counter part facing the flange is provided with a second annular groove, which is connected to the receiving groove. The sealing part, after being heated and expanded, fills the second annular groove.

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