Fastening piece, fastening assembly, riveting assembly and sealing piece installation tool

Abstract

The utility model discloses a fastening piece, a fastening assembly, a riveting assembly and a sealing piece installation tool. The fastening piece comprises a body, a convex navel, a convex ring and a platform. The body is provided with a supporting face used for making contact with a metal plate after being riveted with the metal plate. The size of the outer wall of the convex navel is gradually reduced in the direction close to the supporting face, the convex navel and the supporting face or the platform are defined to form a first groove suitable for containing the sealing piece, the riveting strength is further enhanced, the fastening piece is prevented from axially disengaging from the metal plate, and meanwhile the sealing piece is not prone to disengaging from the first groove. The size of the inner wall of the convex ring is gradually increased in the direction close to the supporting face, the convex ring and the platform or the supporting face define a second groove suitable for containing the sealing piece, the fastening piece is prevented from being disengaged from the metal plate, and the sealing piece is not prone to being disengaged from the second groove. The sealing effect can be improved after the platform is riveted, soft sealing can be achieved when a follow-up sealing piece is installed in the first groove and / or the second groove, and the sealing piece can be prevented from thermal deformation failure through pressing rivet sealing.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastening product field, concretely relates to a fastener, fastening assembly, riveting assembly and sealing piece installation frock. BACKGROUND

[0002] The sealing leakproof requirement of the connection structure in the automobile industry is higher and higher, and the fastener is the most widely used mechanical fixing piece in the automobile assembly connection process. Therefore, the automobile fastener needs to have very high leakproof function. In the prior art, a projection welding sealing nut is used, which comprises a body, an internal thread, a threaded groove, a gasket embedded in the groove and a welded projection ring. When the nut is used, the welding heat and the high temperature environment in the subsequent processing technology are heated multiple times, which can cause the gasket to fail, so that the waterproof and leakproof effect cannot be achieved. In addition, there is a technical scheme of coating glue on the nut end face or the workpiece, but the coating glue cost is high, and it does not have market competitiveness. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the above-mentioned defects or problems in the background art, and provides a fastener, a fastening assembly, a riveting assembly and a sealing piece installation frock.

[0004] In order to achieve the above-mentioned purpose, the utility model and its preferred embodiments adopt the following technical scheme, but the embodiments are not limited to the following scheme:

[0005] Scheme one, a fastener, comprising

[0006] A body provided with a support surface;

[0007] A convex navel protruding from the support surface, and the outer wall size gradually decreases along the direction close to the support surface;

[0008] A projection ring protruding from the periphery of the support surface and surrounding the convex navel, and the inner wall size gradually increases along the direction close to the support surface;

[0009] A platform protruding from the support surface and being spaced apart from one of the outer wall of the convex navel and the inner wall of the projection ring, and the height of the platform is less than the height of the convex navel and the projection ring;

[0010] The convex navel and the support surface or the platform form a first groove suitable for accommodating a sealing piece; and the projection ring and the platform or the support surface form a second groove suitable for accommodating a sealing piece.

[0011] Scheme two, based on scheme one, the height of the convex navel is greater than the height of the projection ring.

[0012] Scheme three, based on scheme one, the platform comprises a ring body and an anti-rotation rib protruding from the ring body in a radial direction of the ring body, the ring body is connected with one of the outer wall of the convex navel and the inner wall of the convex ring, and the anti-rotation rib extends to the other one.

[0013] Scheme four, based on scheme one, an outer contour of the convex navel is non-circular, or an anti-rotation tooth is arranged on the upper end surface of the convex ring or the inner side wall.

[0014] Scheme five, based on scheme one, further comprising a screw rod, the screw rod protrudes from the upper surface of the convex navel.

[0015] Scheme six, based on scheme one, further comprising a screw hole, the screw hole penetrates the convex navel and the body in a vertical direction.

[0016] Scheme seven, a fastening assembly comprising a sealing element and a fastener as claimed in any one of schemes one to six, the sealing element is arranged in the first groove and / or the second groove.

[0017] Scheme eight, a riveting assembly comprising sheet metal and a fastening assembly as claimed in scheme seven, the sheet metal is adapted to fill a receiving groove formed by the support surface, the convex navel, the convex ring and the platform, and is adapted to fill the first groove and / or the second groove to extrude the sealing element, so that the sealing element is deformed.

[0018] Scheme nine, a sealing element installation tooling adapted to install the sealing element in the first groove in a fastening assembly as claimed in scheme seven, comprising a tapered core, the tapered core is adapted to be seated on the convex navel, and an outer wall of the tapered core gradually increases in size in a direction close to the convex navel, and the maximum size of the outer wall of the tapered core is equal to or greater than the maximum size of the convex navel; the tapered core is adapted to be sleeved with the sealing element, and the sealing element is adapted to be arranged in the first groove under the guidance of the outer wall of the tapered core.

[0019] Scheme ten, a sealing element installation tooling adapted to install the sealing element in the second groove in a fastening assembly as claimed in scheme seven, comprising a tapered core, the tapered core is adapted to be seated on the convex ring, the tapered core is provided with a guide hole, the guide hole gradually decreases in size in a direction close to the convex ring, and the minimum size of the guide hole is equal to or less than the minimum size of the convex ring; the guide hole is adapted to be arranged with the sealing element, and the sealing element is adapted to be arranged in the second groove under the guidance of the guide hole.

[0020] From the above description of the utility model and its preferred embodiments, relative to the prior art, the technical scheme of the utility model and its preferred embodiments have the following beneficial effects due to the use of the following technical means:

[0021] 1. In the first aspect and its preferred embodiments, a fastener includes a body, a convex belly, a convex ring and a platform. The body is provided with a supporting surface for contacting the sheet metal after riveting.

[0022] The convex belly protrudes from the supporting surface, the outer wall size of which gradually decreases along the direction close to the supporting surface, and the convex belly and the supporting surface or the platform enclose a first groove suitable for accommodating a sealing element. During riveting, the sheet metal is extruded and plastically deformed, and the metal material flows into the first groove, further strengthening the riveting strength and preventing the fastener from being axially detached from the sheet metal. When used for accommodating the sealing element, the sealing element is less likely to be detached from the first groove because the outer wall size of the upper end of the convex belly is larger than the sealing element.

[0023] The convex ring protrudes from the periphery of the supporting surface and is arranged around the convex belly, the inner wall size of which gradually increases along the direction close to the supporting surface, and the convex ring and the platform or the supporting surface enclose a second groove suitable for accommodating a sealing element. The convex ring can support the sheet metal after riveting, and the metal close to the inner side wall of the convex ring flows into the second groove under the action of extrusion force, preventing the fastener from being detached from the sheet metal. When used for accommodating the sealing element, the sealing element is less likely to be detached from the second groove because the inner wall size of the upper end of the convex ring is smaller than the sealing element.

[0024] The platform protrudes from the supporting surface and is connected to one of the outer wall of the convex belly and the inner wall of the convex ring, and is spaced apart from the other one of the two and not completely connected to the other one, so as to increase the contact area of the sheet metal and the supporting surface after riveting. Since the platform protrudes from the supporting surface, the deformation of the sheet metal can be increased, making the leakproofing more reliable. The height of the platform is smaller than the height of the convex belly and the convex ring, so that the top surface of the platform and the top surface of the supporting surface and the convex ring form a stepped surface, which can improve the sealing effect after riveting. When a subsequent sealing element is installed in the first groove and / or the second groove, the sealing element can be deformed to achieve soft sealing and improve the sealing effect. The press-in sealing can prevent the sealing element from being thermally deformed and failing.

[0025] 2. In the second aspect and its preferred embodiments, the height of the convex belly is greater than the height of the convex ring, so that the material of the sheet metal is easy to flow into the first groove, improving the riveting effect and reducing the distance of the sheet metal to the supporting surface to prevent damage caused by excessive deformation of the sheet metal.

[0026] 3. In the third aspect and its preferred embodiments, the platform includes a ring body and an anti-rotation rib protruding from the ring body in the radial direction of the ring body. The ring body is connected to one of the outer wall of the convex belly and the inner wall of the convex ring, and the anti-rotation rib extends to the other one of the two, achieving an anti-rotation effect.

[0027] 4. In the fourth aspect and its preferred embodiments, the outer contour of the convex belly is non-circular, or the upper end surface or the inner side wall of the convex ring is provided with anti-rotation teeth, preventing the fastener from rotating relative to the sheet metal after riveting.

[0028] 5. The fifth aspect and its preferred embodiments further comprise a screw rod protruding from the upper surface of the convex navel for connecting with external objects.

[0029] 6. The sixth aspect and its preferred embodiments further comprise a screw hole penetrating the convex navel and the body in the vertical direction for connecting with external objects.

[0030] 7. The seventh aspect and its preferred embodiments comprise a fastening assembly comprising the sealing member and the fastener, the sealing member being arranged in the first groove and / or the second groove, the sealing member being adapted to deform when the sheet metal material flows into the first groove and the second groove, so as to compress the sealing member to eliminate the fitting gap, to achieve soft connection leakproofness, and to have the beneficial effects of the fastener.

[0031] 8. The eighth aspect and its preferred embodiments comprise a riveting assembly comprising the sheet metal and the fastening assembly, the sheet metal being adapted to fill the accommodating groove formed by the supporting surface, the convex navel, the convex ring and the platform, and to fill the first groove and / or the second groove to extrude the sealing member, so as to deform the sealing member, to achieve hard connection leakproofness and soft connection leakproofness by riveting, and to have reliable performance and simple application process, one-time riveting and multiple protection.

[0032] 9. The ninth aspect and its preferred embodiments comprise a sealing member installation tool adapted to install the sealing member in the first groove, the tool comprising a tapered core adapted to be seated on the convex navel, the outer wall of the tapered core gradually increasing in size in the direction close to the convex navel, and the maximum size of the outer wall of the tapered core being equal to or greater than the maximum size of the convex navel to prevent the tapered core from being unable to pass over the convex navel, the tapered core being adapted to have the sealing member sleeved thereon, and the sealing member being adapted to be arranged in the first groove under the guidance of the outer wall of the tapered core, so as to facilitate the arrangement of the sealing member in the first groove.

[0033] 10. The tenth aspect and its preferred embodiments comprise a sealing member installation tool adapted to install the sealing member in the second groove, the tool comprising a tapered core adapted to be seated on the convex ring, the tapered core being provided with a guide hole, the size of the guide hole gradually decreasing in the direction close to the convex ring, and the minimum size of the guide hole being equal to or less than the minimum size of the convex ring to prevent the guide hole from being unable to enter the space between the convex ring and the convex navel, the guide hole being adapted to have the sealing member arranged therein, and the sealing member being adapted to be arranged in the second groove under the guidance of the guide hole, so as to facilitate the arrangement of the sealing member in the second groove. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0035] Figure 1This is a perspective view of a fastener in Embodiment 1;

[0036] Figure 2 for Figure 1 Cross-sectional view of the fastener;

[0037] Figure 3 This is a perspective view of another fastener in Embodiment 1;

[0038] Figure 4 for Figure 3 Cross-sectional view of the fastener;

[0039] Figure 5 This is a perspective view of a fastening component in Embodiment 2;

[0040] Figure 6 for Figure 5 Cross-sectional view of the central fastening assembly;

[0041] Figure 7 A schematic diagram of a seal mounting fixture for installing the seal into the first groove;

[0042] Figure 8 for Figure 7 A sectional view of the middle component;

[0043] Figure 9 This is a perspective view of another fastening component in Embodiment 2;

[0044] Figure 10 for Figure 9 Cross-sectional view of the central fastening assembly;

[0045] Figure 11 A schematic diagram of the structure of a seal mounting fixture for installing the seal in the second groove;

[0046] Figure 12 This is a perspective view of another fastening component in Embodiment 2, where the fastener is a bolt;

[0047] Figure 13 for Figure 12 Cross-sectional view of the central fastening assembly;

[0048] Figure 14 This is a schematic diagram of the riveting assembly in Example 3.

[0049] Explanation of key figure labels:

[0050] Body 1; Support surface 11; Umbilical protrusion 2; Protruding ring 3; Platform 4; Ring body 41; Anti-rotation rib 42; First groove 5; Second groove 6; Screw 7; Screw hole 8; Seal 9; Sheet metal 10; Conical core 20; Guide hole 201; Detailed Implementation

[0051] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are preferred embodiments of the present application, and should not be construed as limiting other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0052] In the claims, the specification, and the drawings of the present application, unless otherwise clearly defined, the terms such as "first", "second", or "third" are used only to distinguish different objects, and are not used to describe a specific sequence.

[0053] In the claims, the specification, and the drawings of the present application, unless otherwise clearly defined, for the terms of orientation, such as "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation and position relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present application.

[0054] In the claims, the specification, and the drawings of the present application, unless otherwise clearly defined, such as the terms "fixedly connected" or "fixedly connected", should be understood broadly, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0055] In the claims, the specification, and the drawings of the present application, such as the terms "include", "have" and their variants, are intended to mean "include but not limited to".

[0056] Scheme one

[0057] Reference Figures 1-4 A fastener includes a body 1, a convex belly 2, a convex ring 3, and a platform 4.

[0058] The outer wall contour of the body 1 can be circular or polygonal, and in the present embodiment, the outer wall contour of the body 1 is circular. The body 1 is provided with a supporting surface 11.

[0059] The convex navel 2 is coaxially arranged with the body 1 and protrudes from the middle of the supporting surface 11, the outer wall size of the convex navel 2 gradually decreases in the direction close to the supporting surface 11, and is generally in the shape of an inverted truncated cone. The outer contour of the convex navel 2 is non-circular to achieve the anti-rotation effect after riveting with the sheet metal 10, which can be in the shape of a flower tooth.

[0060] The convex ring 3 is coaxially arranged with the body 1 and surrounds the convex navel 2, and protrudes from the periphery of the supporting surface 11. The inner wall size and the outer wall size of the convex ring 3 both gradually increase in the direction close to the supporting surface 11. The height of the convex navel 2 is greater than the height of the convex ring 3. Anti-rotation teeth are arranged on the upper end face or the inner side wall of the convex ring 3 to achieve the anti-rotation effect after riveting with the sheet metal 10.

[0061] The platform 4 is coaxially arranged with the body 1 and located between the convex navel 2 and the convex ring 3, and protrudes from the supporting surface 11. The platform 4 includes a ring body 41 and an anti-rotation rib 42 protruding from the ring body 41 in the radial direction of the ring body 41. The ring body 41 is connected to one of the outer wall of the convex navel 2 and the inner wall of the convex ring 3, and the anti-rotation rib 42 extends to the other one and is arranged in a spaced manner. The height of the ring body 41 and the anti-rotation rib 42 is the same and less than the height of the convex navel 2 and the convex ring 3.

[0062] Reference Figure 3 , Figure 4 When the platform 4 is connected to the convex navel 2, the convex navel 2 and the platform 4 form a first groove 5 suitable for accommodating the sealing element 9, and the convex ring 3 and the supporting surface 11 form a second groove 6 suitable for accommodating the sealing element 9. Figure 1 , Figure 2 When the platform 4 is connected to the convex ring 3, the convex navel 2 and the supporting surface 11 form a first groove 5 suitable for accommodating the sealing element 9; and the convex ring 3 and the platform 4 form a second groove 6 suitable for accommodating the sealing element 9.

[0063] The fastener can be in the form of a bolt or a nut. When the fastener is in the form of a bolt (as shown in Figure 12 , Figure 13 , the fastener further includes a screw rod 7 protruding from the upper surface of the convex navel 2 and coaxially arranged with the body 1, i.e. protruding from the surface of the convex navel 2 away from the supporting surface 11. The screw rod 7 has an external thread. When the fastener is in the form of a nut, the fastener is further provided with a threaded hole 8 which penetrates the convex navel 2 and the body 1 in the vertical direction and is coaxially arranged with the body 1. The threaded hole 8 has an internal thread.

[0064] Compared with the prior art, the embodiment has the following beneficial effects

[0065] In an exemplary embodiment, a fastener includes a body 1, a convex navel 2, a convex ring 3 and a platform 4. The body 1 is provided with a supporting surface 11 for contacting the sheet metal 10 after riveting with the sheet metal 10.

[0066] The convex navel 2 protrudes from the support surface 11, the outer wall size of which gradually decreases along the direction close to the support surface 11, and the convex navel 2 and the support surface 11 or the platform 4 form a first recess 5 suitable for accommodating the sealing element 9. In the riveting process, the sheet metal 10 is extruded and plastically deformed, and the metal material flows into the first recess 5, further strengthening the riveting strength and preventing the fastener from being axially detached from the sheet metal 10. When used for accommodating the sealing element 9, since the outer wall size of the upper end of the convex navel 2 is larger than the sealing element 9, the sealing element 9 is not easy to be detached from the first recess 5.

[0067] The convex ring 3 protrudes from the periphery of the support surface 11 and is arranged around the convex navel 2, the inner wall size of which gradually increases along the direction close to the support surface 11, and the convex ring 3 and the platform 4 or the support surface 11 form a second recess 6 suitable for accommodating the sealing element 9. The convex ring 3 can support the sheet metal 10 after riveting, and the metal close to the inner side wall of the convex ring 3 flows into the second recess 6 under the action of extrusion pressure, preventing the fastener from being detached from the sheet metal 10. When used for accommodating the sealing element 9, since the inner wall size of the upper end of the convex ring 3 is smaller than the sealing element 9, the sealing element 9 is not easy to be detached from the second recess 6.

[0068] The platform 4 protrudes from the support surface 11 and is connected to one of the outer wall of the convex navel 2 and the inner wall of the convex ring 3, and is spaced apart from the other one of the outer wall of the convex navel 2 and the inner wall of the convex ring 3 and is not completely connected to the other one, so as to increase the contact area of the sheet metal 10 and the support surface 11 after riveting. Since the platform 4 protrudes from the support surface 11, the deformation of the sheet metal 10 is increased, and the leakage prevention is more reliable. The height of the platform 4 is smaller than the height of the convex navel 2 and the convex ring 3, so that the top surface of the platform 4 forms a stepped surface with the top surface of the support surface 11 and the convex ring 3. After riveting, the sealing effect can be improved, and when the subsequent sealing element 9 is installed in the first recess 5 and / or the second recess 6, the sealing element 9 can be deformed to achieve soft sealing and improve the sealing effect. The press-in sealing can prevent the sealing element 9 from being deformed by heat and failing.

[0069] In an exemplary embodiment, the height of the convex navel 2 is greater than the height of the convex ring 3, so that the material of the sheet metal 10 is easy to flow into the first recess 5, the riveting effect is improved, and the distance between the sheet metal 10 and the support surface 11 is reduced, preventing the sheet metal 10 from being damaged due to excessive deformation.

[0070] In an exemplary embodiment, the platform 4 includes a ring body 41 and an anti-rotation rib 42 protruding from the ring body 41 in the radial direction of the ring body 41. The ring body 41 is connected to one of the outer wall of the convex navel 2 and the inner wall of the convex ring 3, and the anti-rotation rib 42 extends to the other one of the outer wall of the convex navel 2 and the inner wall of the convex ring 3 to achieve the anti-rotation effect.

[0071] In an exemplary embodiment, the outer contour of the convex navel 2 is non-circular, or the upper end surface of the convex ring 3 or the inner side wall thereof is provided with anti-rotation teeth to prevent the fastener from rotating relative to the sheet metal 10 after riveting.

[0072] In an exemplary embodiment, a screw 7 is further included, which protrudes from the upper surface of the navel 2 to facilitate connection with external objects.

[0073] In an exemplary embodiment, a screw hole 8 is further included, which penetrates the navel 2 and the body 1 in the vertical direction to facilitate connection with external objects.

[0074] Embodiment 2

[0075] Reference Figure 5 、 Figure 6 、 Figure 9 、 Figure 10 、 Figure 12 、 Figure 13 A fastening assembly includes a sealing member 9 and the above-mentioned fastener. The sealing member 9 is placed in the first groove 5 and / or the second groove 6. The sealing member 9 is adapted to deform when the sheet metal 10 material flows into the first groove 5 and the second groove 6, so that the sealing member 9 is compressed and deformed to eliminate the fitting gap and achieve soft connection leakproofness. The sealing member 9 is a non-metallic member with elasticity, and the cross-sectional shape is preferably but not limited to a circular shape.

[0076] Reference Figure 7 、 Figure 8 When it is necessary to install the sealing member 9 in the first groove 5, the sealing member is installed by a sealing member installation tool. The sealing member installation tool includes a tapered core 20, which is adapted to be seated on the navel 2, and the outer wall of the tapered core 20 gradually increases in size in the direction close to the navel 2, forming a structure that is narrow at the top and wide at the bottom. Moreover, the maximum size of the outer wall of the tapered core 20 (the size at the bottom) is equal to or greater than the maximum size of the navel 2 (the size at the top), preventing the sealing member 9 from being unable to pass over the top surface of the navel 2. The tapered core 20 is adapted to allow the sealing member 9 to be sleeved thereon, and the sealing member 9 is adapted to be placed into the first groove 5 under the guidance of the outer wall of the tapered core 20, thereby facilitating the placement of the sealing member 9 into the first groove 5. Specifically, the sealing member 9 is sleeved on the tapered core 20, and the sealing member 9 is pressed down, so that the inner diameter of the sealing member 9 elastically deforms and expands, and slides downward along the outer wall of the tapered core 20 until it is completely sleeved in the navel 2. Since the diameter of the lower part of the navel 2 is small, the sealing member 9 elastically shrinks to a state in which the diameter is smaller than that of the upper part of the navel 2, preventing it from coming out.

[0077] Reference Figure 11 When it is necessary to install the sealing member 9 in the second groove 6, the sealing member installation tool includes a tapered core 20, which is adapted to be seated on the navel 2. The tapered core 20 is provided with a guide hole 201, which gradually decreases in size in the direction close to the navel 2, and the minimum size of the guide hole 201 is equal to or smaller than the minimum size of the navel 2, preventing the sealing member 9 from being unable to enter the space between the navel 2 and the navel 2. The guide hole 201 is adapted to allow the sealing member 9 to be placed therein, and the sealing member 9 is adapted to be placed into the second groove 6 under the guidance of the guide hole 201, thereby facilitating the placement of the sealing member 9 into the second groove 6.

[0078] Specifically, the sealing member 9 is first placed into the guide hole 201, and the sealing member 9 is pressed down, and the outer diameter of the sealing member 9 is deformed to shrink until the sealing member 9 is sleeved into the second groove 6. Since the diameter of the lower part of the convex ring 3 is smaller than the outer diameter of the sealing member 9, the outer diameter of the sealing member 9 rebounds to become larger, and stable contact is formed.

[0079] Embodiment three

[0080] Reference Figure 14 A riveting assembly includes sheet metal 10 and the above fastening assembly,

[0081] Initially, the sheet metal 10 is provided with a through hole, and the through hole is suitable for being sleeved outside the convex belly 2, and the sheet metal 10 is suitable for being seated on the convex ring 3.

[0082] When processing, the sheet metal 10 is placed on the convex ring 3, and the through hole is sleeved outside the convex belly 2. The sheet metal 10 is plastically deformed under the action of the punch, and the metal close to the convex belly 2 shrinks and flows into the first groove 5. At the same time, the metal close to the inner wall of the convex ring 3 flows into the second groove 6 under the action of the extrusion force, preventing the fastener from being pulled out of the sheet metal 10. At the same time, the platform 4 is in contact with the sheet metal 10, and under the action of pressure, the platform 4 and the sheet metal 10 are tightly connected to each other to achieve hard connection and sealing. When riveting is completed, the sheet metal 10 fills the accommodation groove formed by the support surface 11, the convex belly 2, the convex ring 3 and the platform 4, and is suitable for filling the first groove 5 and / or the second groove 6 to extrude the sealing member 9, so that the sealing member 9 deforms to fill the corresponding gap. The platform 4 protrudes from the support surface 11, so the deformation of the sheet metal 10 can be increased, and the leakage prevention is more reliable. The anti-rotation rib 42 penetrates into the sheet metal 10, and plays a role in preventing the fastener from rotating relative to the sheet metal 10.

[0083] The riveting assembly realizes hard connection and soft connection leakage prevention through riveting, and has reliable performance, simple application process, and multiple protection through one-time riveting.

[0084] The above description and embodiment of the description are used to explain the protection scope of the utility model, but do not constitute a limitation on the protection scope of the utility model. Through the inspiration of the utility model or the above embodiment, a person skilled in the art can obtain the modification, equivalent replacement or other improvement of the embodiment or part of the technical features of the utility model through logical analysis, reasoning or limited test combined with common knowledge, ordinary technical knowledge in the art and / or existing technology, and the modification, equivalent replacement or other improvement should be included in the protection scope of the utility model.

Claims

1. A fastener, characterized by: Comprising a body (1) provided with a support surface (11); a convex navel (2) protruding from the support surface (11), the outer wall size of which gradually decreases along the direction close to the support surface (11); a convex ring (3) protruding from the periphery of the support surface (11) and arranged around the convex navel (2), the inner wall size of which gradually increases along the direction close to the support surface (11); a platform (4) protruding from the support surface (11) and spaced apart from one of the outer wall of the convex navel (2) and the inner wall of the convex ring (3), the height of the platform (4) being less than the height of the convex navel (2) and the convex ring (3); the convex navel (2) and the support surface (11) or the platform (4) form a first groove (5) suitable for accommodating a sealing member (9); the convex ring (3) and the platform (4) or the support surface (11) form a second groove (6) suitable for accommodating a sealing member (9).

2. A fastener as claimed in claim 1 wherein: The height of the convex navel (2) is greater than the height of the convex ring (3).

3. A fastener as defined in claim 1, wherein: The platform (4) comprises a ring body (41) and an anti-rotation rib (42) protruding from the ring body (41) in the radial direction of the ring body (41), the ring body (41) is in contact with one of the outer wall of the convex navel (2) and the inner wall of the convex ring (3), and the anti-rotation rib (42) extends to the other one.

4. The fastener of claim 1 wherein: The outer contour of the convex navel (2) is non-circular, or the upper end surface or the inner side wall of the convex ring (3) is provided with an anti-rotation tooth.

5. The fastener of claim 1 wherein: Further comprising a screw rod (7) protruding from the upper surface of the convex navel (2).

6. A fastener as defined in claim 1, wherein: Further provided with a screw hole (8) penetrating the convex navel (2) and the body (1) in the vertical direction.

7. A fastening assembly characterized by: Comprising a sealing member (9) and a fastener as claimed in any one of claims 1-6, the sealing member (9) is placed in the first groove (5) and / or the second groove (6).

8. A riveted assembly characterized by: Comprising sheet metal (10) suitable for filling the accommodating groove formed by the support surface (11), the convex navel (2), the convex ring (3) and the platform (4), and suitable for filling the first groove (5) and / or the second groove (6) to extrude the sealing member (9) and deform the sealing member (9).

9. A seal installation tool characterized by: It is suitable for installing the sealing member (9) in the first groove (5) in a fastening assembly as claimed in claim 7, comprising a tapered core (20) suitable for sitting on the convex navel (2), the outer wall size of the tapered core (20) gradually increases along the direction close to the convex navel (2), and the maximum size of the outer wall of the tapered core (20) is equal to or greater than the maximum size of the convex navel (2); the tapered core (20) is suitable for sleeving the sealing member (9), and the sealing member (9) is suitable for being placed into the first groove (5) under the guidance of the outer wall of the tapered core (20).

10. A seal installation tool characterized by: The application is suitable for installing the sealing member (9) in the fastening assembly as claimed in claim 7 into the second groove (6), which comprises a tapered core (20) suitable for sitting on the convex ring (3), the tapered core (20) being provided with a guide hole (201) which gradually decreases in size in the direction close to the convex ring (3), and the minimum size of the guide hole (201) being equal to or smaller than the minimum size of the convex ring (3); the guide hole (201) is suitable for placing the sealing member (9) into, and the sealing member (9) is suitable for being placed into the second groove (6) under the guidance of the guide hole (201).

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