Self-plugging rivet and vehicle applying same
By designing core pulling rivets with gravure structures, the problem of slippage caused by tolerance gaps in vehicle manufacturing is solved, the stability and fastening of part connections are enhanced, and a more efficient connection effect is achieved.
Patent Information
- Application Number
- CN202421115204.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In vehicle manufacturing, when multiple parts arranged in stacked are passed through connecting parts such as drilling screws, core pulling rivets, bolts, etc., the parts often slip due to the tolerance gap between the opening hole diameter and the connecting part, causing the connection structure to loosen, resulting in the connection structure and the problem of abnormal noise.
A core pulling rivet is designed, which includes a nail core, a rivet sleeve and a gravure structure. The nail core extends in the direction of riveting. The rivet sleeve includes a rivet pipe and a rivet cap. The rivet pipe is fixedly connected to the nail core from one end of the rivet cap. The tube has a gravure structure, and the fastening structure is located on the second surface of the rivet cap. The gravure structure is thinner when the rivet tube is subjected to extrusion, is easy to bulge, and is abutting against the inner wall or edge of the mounting hole of the part, enhancing the connection strength.
Through the design of core pulling rivets, the connection strength between parts is enhanced, the probability of mutual slippage is reduced, the stability and fastening of the connection are improved, and the problems of looseness and abnormal noise are avoided.
Smart Images
Figure CN222277152U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automobile parts, and in particular to a blind rivet and a vehicle using the same. Background Art
[0002] It is a common connection process to connect non-integrated structures or reinforce integral structures using connectors such as flow drill screws, blind rivets, bolts, etc., which can be applied to the production and processing of various products. In the field of vehicle manufacturing, it is also feasible to use connectors such as flow drill screws, blind rivets, bolts, etc. to reinforce and / or connect the vehicle body structure. Especially when connecting multiple parts arranged in a stacked manner, the method of connecting parts such as flow drill screws, blind rivets, bolts, etc. that penetrate multiple parts and connect them usually has the advantages of high efficiency and convenience. However, this connection process also has obvious defects. For example, there is often a tolerance gap between the aperture of the openings of the multiple parts arranged in a stacked manner and the connectors that penetrate them, which allows the multiple parts to slip against each other, thereby causing the connection structure to become loose, make abnormal noises, and other problems. How to solve the above problems is what those skilled in the art need to consider. Utility Model Content
[0003] In order to solve the problems in the prior art, an embodiment of the present application provides a blind rivet with a tighter connection and a vehicle using the same.
[0004] The embodiment of the present application provides a blind rivet, which includes a mandrel and a rivet sleeve. The mandrel extends along a riveting direction; the rivet sleeve includes a rivet tube and a rivet cap which are connected and arranged, the rivet cap is arranged on one side of the rivet tube along the riveting direction, the rivet tube and the rivet cap are sleeved on the outside of the mandrel, and the end of the rivet tube away from the rivet cap is fixedly connected to the mandrel. The rivet tube has a first surface away from the mandrel, and the rivet tube also has a gravure structure, the gravure structure is recessed from the first surface and / or penetrates the first surface, the rivet cap includes a cap body and a fastening structure, the cap body is connected to the rivet tube, the cap body has a second surface arranged toward the side where the rivet tube is located, and the fastening structure is arranged on the second surface.
[0005] In one embodiment, the blind rivet is used to clamp and lock multiple parts. The blind rivet is constructed to penetrate the multiple parts along the riveting direction. The thickness of the parts clamped and locked by the blind rivet along the riveting direction is H. The distance between the edge of the gravure structure close to the rivet cap and the second surface along the riveting direction is L, wherein L is less than or equal to H.
[0006] In one embodiment, the gravure structure is extended along the riveting direction, one end of the gravure structure is spaced apart from the second surface, and the other end of the gravure structure extends to the connection between the rivet tube and the nail core.
[0007] In one embodiment, the gravure structure includes at least one gravure pattern, the gravure pattern includes a connecting area and a thinning area, the thickness of the thinning area is smaller than the thickness of the connecting area, and / or the thinning area is arranged throughout the first surface.
[0008] In one embodiment, the intaglio pattern includes a plurality of thinned areas, and the plurality of thinned areas are dispersedly arranged around the connecting area.
[0009] In one embodiment, the rivet tube is in the shape of a hollow column surrounding the nail core, and the gravure structure includes a plurality of gravure patterns, and the plurality of gravure patterns are arranged around the nail core at intervals on the first surface.
[0010] In one embodiment, the fastening structure includes at least one protruding nail, and the protruding nail is connected to the second surface and protrudes along the riveting direction toward the side where the rivet tube is located.
[0011] In one embodiment, the fastening structure includes a plurality of protruding nails, the plurality of protruding nails are arranged at intervals on the second surface, the plurality of protruding nails are connected to the second surface and protrude toward the side where the rivet tube is located along the riveting direction.
[0012] In one embodiment, the rivet sleeve is provided with a through cavity which passes through the rivet tube and the rivet cap along the riveting direction, and the nail core includes a pulling part, a breaking part, a retaining part and a connecting part which are sequentially connected along the riveting direction, the connecting part is arranged outside the through cavity, the rivet tube is connected to the connecting part, the retaining part is accommodated in the through cavity, at least a section of the pulling part is arranged outside the through cavity, and the breaking part is constructed to connect or separate the pulling part from the retaining part.
[0013] The embodiment of the present application also provides a vehicle, which includes a vehicle body and a blind rivet as described in any one of the above embodiments. The vehicle body includes a plurality of parts, and the plurality of parts have mounting holes arranged therethrough; the blind rivet is arranged to pass through the plurality of parts along the riveting direction, the mounting hole is used to accommodate the rivet core and the rivet tube, the end of the gravure structure close to the second surface is located in the mounting hole, the area of the rivet tube provided with the gravure structure is bulged and abuts against the inner wall and / or edge of the mounting hole, and the fastening structure is engaged and clamped with at least one of the plurality of parts.
[0014] It can be understood that the nail core extends along the riveting direction so that it can be pulled along the riveting direction. At the same time, the rivet cap is arranged on one side of the rivet tube along the riveting direction. The rivet tube and the rivet cap are sleeved on the outside of the nail core, and the end of the rivet tube away from the rivet cap is fixedly connected to the nail core. When the nail core is pulled along the riveting direction, the end of the rivet tube away from the rivet cap is pulled by the nail core, and further drives the rivet tube to bulge. The bulged rivet tube cooperates with the rivet cap to lock multiple parts. Among them, the fastening structure provided on the second surface can be embedded in the part after riveting, thereby enhancing the connection strength between the blind rivet and the part and reducing the probability of mutual slippage of multiple parts; the gravure structure is recessed from the first surface toward the inner side of the rivet tube (which can also be understood as the side where the nail core is located) and / or penetrates the first surface. When the rivet tube is subjected to extrusion due to riveting, since at least part of the gravure structure is thinner than other areas of the first surface, the area of the rivet tube where the gravure structure is provided is more likely to bulge. By adjusting the setting position of the gravure structure, the bulging position of the rivet tube can be controlled to enhance the connection strength between the blind rivet and the part. The area of the rivet tube where the gravure structure is provided can also be able to abut against the inner wall and / or edge of the mounting hole of the part after bulging, thereby further enhancing the connection strength between the blind rivet and the part and reducing the probability of mutual slippage of multiple parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A three-dimensional schematic diagram of a blind rivet provided in an embodiment of the present application, with the front edge of the rivet pulled obliquely as viewed from an upward angle.
[0016] Figure 2 A three-dimensional schematic diagram of a blind rivet provided in an embodiment of the present application, viewed from an oblique top view of the front edge of the riveted front.
[0017] Figure 3 for Figure 2 Schematic cross-sectional view along direction III-III.
[0018] Figure 4 A schematic plan view of the blind rivet provided in an embodiment of the present application, showing the front edge of the rivet being pulled as viewed from above.
[0019] Figure 5 A schematic plan view of a blind rivet provided in an embodiment of the present application and a part in an assembled state and after the blind rivet has been riveted.
[0020] Figure 6 A three-dimensional schematic diagram of a blind rivet and a part provided in an embodiment of the present application in an assembled state and after the blind rivet has been riveted.
[0021] Figure 7 for Figure 6 Schematic cross-sectional view along direction VII-VII.
[0022] Figure 8 A three-dimensional schematic diagram of the blind rivet provided in an embodiment of the present application after being riveted along the main viewing angle.
[0023] Fig. 9 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application.
[0024] Main component symbols
[0025] Blind rivet 10
[0026] Nail core 11
[0027] Connection part 111
[0028] Retention part 112
[0029] Broken part 113
[0030] Fracture Structure 1131
[0031] Pulling part 114
[0032] Pulling structure 1141
[0033] Rivet sleeve 12
[0034] Through cavity 120
[0035] Riveted tube 121
[0036] First surface 1211
[0037] Gravure structure 1212
[0038] Intaglio pattern 12120
[0039] Connection Zone 12121
[0040] Thinning area 12122
[0041] Raised structure 1213
[0042] First end 1214
[0043] Second end 1215
[0044] Tube body 1216
[0045] Rivet cap 122
[0046] Cap body 1221
[0047] Second surface 12211
[0048] Fourth surface 12212
[0049] Fastening structure 1222
[0050] Raised nail 12220
[0051] Top 12221
[0052] The third surface 123
[0053] Riveting direction F
[0054] Shear direction f
[0055] Axial h
[0056] Radial d
[0057] First direction X
[0058] Second direction Y
[0059] The third direction Z
[0060] Vehicle 1
[0061] Body 18
[0062] Part 181
[0063] Mounting hole 1810
[0064] First outer surface 1811
[0065] Second outer surface 1812
[0066] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0067] The following description will refer to the accompanying drawings to more fully describe the content of the present application. The accompanying drawings show exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be interpreted as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals represent identical or similar components. The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "one", "an" and "the" are intended to also include plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components and / or their groups. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as those generally understood by ordinary technicians in the field to which the present application belongs. Furthermore, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the relevant art and the content of this application, and will not be interpreted as idealized or overly formal meanings.
[0068] Generally, it is a common connection process to use connectors such as flow drill screws, blind rivets, bolts, etc. to connect non-integrated structures or to reinforce integrated structures, which can be applied to the production and processing of various products. In the field of vehicle manufacturing, it is also feasible to use connectors such as flow drill screws, blind rivets, bolts, etc. to reinforce and / or connect the vehicle body structure. Especially when connecting multiple parts arranged in a stacked manner, the method of connecting parts such as flow drill screws, blind rivets, bolts, etc. that penetrate multiple parts and connect them usually has the advantages of high efficiency and convenience. However, this connection process also has obvious defects. For example, there is often a tolerance gap between the aperture of the openings of the multiple parts arranged in a stacked manner and the connectors that penetrate them, which allows the multiple parts to slip against each other, thereby causing the connection structure to become loose, make abnormal noises, and other problems. How to solve the above problems is what those skilled in the art need to consider.
[0069] Correspondingly, the embodiment of the present application provides a blind rivet, which includes a mandrel and a rivet sleeve. The mandrel extends along a riveting direction; the rivet sleeve includes a rivet tube and a rivet cap connected and arranged, the rivet cap is arranged on one side of the rivet tube along the riveting direction, the rivet tube and the rivet cap are sleeved on the outside of the mandrel, and the end of the rivet tube away from the rivet cap is fixedly connected to the mandrel. Wherein, the rivet tube has a first surface away from the mandrel, that is, the first surface is the outer surface of the rivet tube, the rivet tube also has a gravure structure, the gravure structure is concavely formed from the first surface toward the inner side of the rivet tube (which can also be understood as the side where the mandrel is located) and / or penetrates the first surface, the rivet cap includes a cap body and a fastening structure, the cap body is connected to the rivet tube, the cap body has a second surface arranged toward the side where the rivet tube is located, and the fastening structure is protruding on the second surface. The embodiment of the present application also provides a vehicle, which includes a vehicle body and the blind rivet. The vehicle body comprises a plurality of parts, each of which has mounting holes extending therethrough; the blind rivet extends through the plurality of parts along the riveting direction, the mounting hole is used to accommodate the rivet core and the rivet tube, one end of the gravure structure close to the second surface is located in the mounting hole, the region of the rivet tube where the gravure structure is provided is bulged and abuts against an inner wall and / or edge of the mounting hole, and the fastening structure is engaged and snap-fitted with at least one of the plurality of parts.
[0070] Furthermore, the nail core extends along the riveting direction so that it can be pulled along the riveting direction. At the same time, the rivet cap is arranged on one side of the rivet tube along the riveting direction. The rivet tube and the rivet cap are sleeved on the outside of the nail core, and the end of the rivet tube away from the rivet cap is fixedly connected to the nail core. When the nail core is pulled along the riveting direction, the end of the rivet tube away from the rivet cap is pulled by the nail core, and further drives the rivet tube to bulge. The bulged rivet tube cooperates with the rivet cap to lock multiple parts. Among them, the fastening structure provided on the second surface can be embedded in the part after riveting, thereby enhancing the connection strength between the blind rivet and the part and reducing the probability of mutual slippage of multiple parts; the gravure structure is recessed from the first surface toward the inner side of the rivet tube (which can also be understood as the side where the nail core is located) and / or penetrates the first surface. When the rivet tube is subjected to extrusion due to riveting, since at least part of the gravure structure is thinner than other areas of the first surface, the area of the rivet tube where the gravure structure is provided is more likely to bulge. By adjusting the setting position of the gravure structure, the bulging position of the rivet tube can be controlled to enhance the connection strength between the blind rivet and the part. The area of the rivet tube where the gravure structure is provided can also be able to abut against the inner wall and / or edge of the mounting hole of the part after bulging, thereby further enhancing the connection strength between the blind rivet and the part and reducing the probability of mutual slippage of multiple parts.
[0071] Those skilled in the art can understand that "blind rivet" refers to a mechanical connector used to connect multiple parts, which usually includes a rivet core and a rivet sleeve.
[0072] Those skilled in the art can understand that a "nail core" refers to a nail that can be pulled and driven, one end of which is used to connect with the rivet sleeve, and the other end is used to be pulled.
[0073] Those skilled in the art can understand that a "rivet sleeve" refers to a hollow structure that can be sleeved on the outside of a nail core, which is connected to the nail core and can be deformed (eg bulged) under force.
[0074] Those skilled in the art can understand that the "rivet tube" refers to the hollow cylindrical part of the rivet sleeve that is designed to be deformable. When the rivet tube is subjected to the rivet force in the axial direction, it can be deformed (for example, bulging), making it shorter in the axial direction and wider in the radial direction to form a convex structure.
[0075] Those skilled in the art can understand that the "gravure structure" refers to a preset stress release site on the rivet sleeve. The gravure structure can be a thinner or through-shaped structure that is integrally formed during the manufacturing process of the rivet sleeve. The gravure structure can also be a thinner or through-shaped structure that is formed by embossing and / or removal (for example, CNC processing) after the rivet sleeve main body is manufactured. The mechanical strength of the area of the rivet tube corresponding to the gravure structure is lower.
[0076] Those skilled in the art can understand that the "rivet cap" refers to the cap-shaped portion of the rivet sleeve designed to abut against the riveting tool, and the rivet cap is constructed to cooperate with the raised structure after the rivet tube is bulged to lock the parts.
[0077] Those skilled in the art can understand that the “cap body” refers to a cap-shaped structure in the rivet cap that is connected to the end of the rivet tube and extends outward.
[0078] Those skilled in the art can understand that the “fastening structure” refers to a structure with a certain rigidity provided by the protrusion.
[0079] Those skilled in the art can understand that the “rivet pulling direction” refers to the direction in which the mandrel of the blind rivet is pulled by the riveting tool.
[0080] Those skilled in the art can understand that "bulging" refers to the process and / or result of causing the rivet tube to be forced to bulge outward away from the nail core and form a bulging structure. The two ends of the rivet tube are respectively subjected to the opposing forces exerted by the rivet cap and the nail core in the direction of riveting, so that the middle part of the rivet tube is deformed and bulges outward due to being squeezed. The bulging process can be called "bulging". At the same time, "bulging" also means "a structure with a bulging shape can be formed after the bulging process is completed."
[0081] Those skilled in the art can understand that "parts" refer to structures with a through mounting hole and a certain rigidity, multiple parts can be stacked and multiple mounting holes can be aligned, blind rivets can be set through the mounting holes and both ends of the blind rivets can be located outside the mounting holes, and multiple parts can be connected by the blind rivets after riveting from both sides along the riveting direction. Common parts include but are not limited to metal plates and plastic plates.
[0082] The following will describe exemplary embodiments in conjunction with the accompanying drawings. It should be noted that the components depicted in the reference drawings are not necessarily shown to scale; and the same or similar components will be given the same or similar reference numerals or similar technical terms.
[0083] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.
[0084] like Figures 1 to 3 As shown, the embodiment of the present application provides a blind rivet 10, which includes a mandrel 11 and a rivet sleeve 12. The mandrel 11 extends along a riveting direction F; the rivet sleeve 12 includes a rivet tube 121 and a rivet cap 122 connected and arranged, the rivet cap 122 is arranged on one side of the rivet tube 121 along the riveting direction F, the rivet tube 121 and the rivet cap 122 are sleeved on the outside of the mandrel 11, and the end of the rivet tube 121 away from the rivet cap 122 is fixedly connected to the mandrel 11. The rivet tube 121 has a first surface 1211 away from the mandrel 11, that is, the first surface 1211 is the outer surface of the rivet tube 121, and the rivet tube 121 also has a concave structure 1212, and the concave structure 1212 is concavely formed from the first surface 1211 toward the inner side of the rivet tube 121 (which can also be understood as the side where the mandrel 11 is located) and / or penetrates the first surface 1211. The rivet cap 122 includes a cap body 1221 and a fastening structure 1222 . The cap body 1221 is connected to the rivet tube 121 . The cap body 1221 has a second surface 12211 disposed toward the side where the rivet tube 121 is located. The fastening structure 1222 is protruding from the second surface 12211 .
[0085] Further integration Figures 5 to 7 As shown, it can be understood that the blind rivet 10 provided in the embodiment of the present application can be used in conjunction with a plurality of parts 181 to press the plurality of parts 181 together along the riveting direction F, thereby locking the plurality of parts 181.
[0086] It can be understood that the nail core 11 extends along a riveting direction F so as to be pulled along the riveting direction F. At the same time, the rivet cap 122 is arranged on one side of the rivet tube 121 along the riveting direction F. The rivet tube 121 and the rivet cap 122 are sleeved on the outside of the nail core 11. The end of the rivet tube 121 away from the rivet cap 122 is fixedly connected to the nail core 11. When the nail core 11 is pulled along the riveting direction F, the end of the rivet tube 121 away from the rivet cap 122 is pulled by the nail core 11, and further drives the rivet tube 121 to bulge. The bulged rivet tube 121 cooperates with the rivet cap 122 to lock multiple parts 181. Among them, the fastening structure 1222 provided on the second surface 12211 can be embedded in the part 181 after riveting, thereby enhancing the connection strength between the blind rivet 10 and the part 181 and reducing the probability of the multiple parts 181 slipping against each other; the concave structure 1212 is concavely formed from the first surface 1211 toward the inner side of the rivet tube 121 (which can also be understood as the side where the nail core 11 is located) and / or penetrates the first surface 1211. When the rivet tube 121 is squeezed due to riveting, at least part of the concave structure 1212 is larger than the first surface 1211. The other areas of the rivet tube 121 are thinner, so that the area where the gravure structure 1212 is provided is easier to bulge. By adjusting the setting position of the gravure structure 1212, the bulging of the rivet tube 121 can be controlled to enhance the connection strength between the blind rivet 10 and the part 181. The area where the gravure structure 1212 is provided on the rivet tube 121 can be abutted against the inner wall and / or edge of the mounting hole 1810 of the part 181 after bulging, thereby further enhancing the connection strength between the blind rivet 10 and the part 181 and reducing the probability of multiple parts 181 slipping against each other.
[0087] Further integration Figures 1 to 3 As shown, in one embodiment, the rivet sleeve 12 is provided with a through cavity 120 that penetrates the rivet tube 121 and the rivet cap 122 along the rivet pulling direction F. The nail core 11 includes a pulling portion 114, a breaking portion 113, a retaining portion 112 and a connecting portion 111 that are sequentially connected along the rivet pulling direction F. The connecting portion 111 is arranged outside the through cavity 120, and one end of the rivet tube 121 away from the rivet cap 122 is connected to the connecting portion 111. The retaining portion 112 is accommodated in the through cavity 120. At least one section of the pulling portion 114 is arranged outside the through cavity 120. The breaking portion 113 is configured to connect or separate the pulling portion 114 and the retaining portion 112.
[0088] In one embodiment, the nail core 11 is roughly columnar along the riveting direction F. In this embodiment, the nail core 11 is an axisymmetric structure as an example for demonstration. The columnar nail core 11 has an axial direction h and a radial direction d. The axial direction h refers to the height direction of the columnar nail core 11, and the radial direction d refers to the radius direction of the circular cross section (or bottom surface) of the columnar nail core 11. The axial direction h and the radial direction d are usually perpendicular to each other, and the radial direction d can be the straight line direction where any diameter line segment on the cross section is located. In this embodiment, the axial direction h of the columnar nail core 11 is parallel to or coincides with the riveting direction F, and the radial direction d of the columnar nail core 11 is perpendicular to the riveting direction F.
[0089] In one embodiment, the connecting portion 111, the retaining portion 112, the breaking portion 113 and the pulling portion 114 are sequentially arranged and sequentially connected along the riveting direction F, that is, the connecting portion 111 and the breaking portion 113 are respectively connected to the two ends of the retaining portion 112 along the riveting direction F, and the retaining portion 112 and the pulling portion 114 are respectively connected to the two ends of the breaking portion 113 along the riveting direction F. Among them, the diameter of the connecting portion 111 along the radial direction d is greater than the diameter of the retaining portion 112 along the radial direction d, so that the rivet tube 121 can be connected to the connecting portion 111 while being sleeved on the outside of the retaining portion 112, and the connecting portion 111 can squeeze the rivet tube 121 along the riveting direction F, so that the rivet tube 121 can be pressed and bulged. The retaining portion 112 and the pulling portion 114 are arranged through the rivet sleeve 12, and the diameters of the retaining portion 112 and the pulling portion 114 along the radial direction d are both smaller than the diameter of the connecting portion 111 along the radial direction d. The diameters of the pulling portion 114 and the retaining portion 112 along the radial direction d can be roughly equal or there is no special requirement; the retaining portion 112 can have a smooth and flat outer surface to avoid interference with the bulging process of the rivet sleeve 12; the outer surface of the pulling portion 114 can have a pulling structure 1141, and the pulling structure 1141 can be threaded or concave-convex, which is used to improve the connection strength between the pulling tool (such as a rivet gun) and the pulling structure 1141, thereby improving the riveting efficiency and accuracy. The outer surface of the breaking portion 113 is concave to form a breaking structure 1131, and the breaking structure 1131 is concave. The diameter of at least one section of the breaking portion 113 along the radial direction d is smaller than the diameters of the pulling portion 114 and the retaining portion 112 along the radial direction d, so that the breaking portion 113 can be broken before the retaining portion 112 and the pulling portion 114, thereby realizing the separation of the retaining portion 112 and the pulling portion 114 after the riveting is completed.
[0090] In this embodiment, the connecting portion 111 corresponds to the nail head of the nail core 11, and the pulling portion 114 corresponds to the nail tail of the nail core 11. The nail core 11 has a rotationally symmetrical structure along the axial direction h, and the pulling structure 1141 includes a plurality of indentations and convexities formed by being respectively concave or convex along the radial direction d, and the plurality of indentations and convexities are arranged in sequence and repeatedly at intervals along the axial direction h to form the pulling structure 1141, and the fracture structure 1131 is formed by the outer surface of the fracture portion 113 being thinned inwardly along the radial direction d, and along the axial direction h, the thickness of the thinning in the middle of the fracture portion 113 is the largest (that is, the corresponding radial direction d dimension here is the smallest), and the thickness of the thinning toward both sides along the axial direction h gradually decreases.
[0091] It can be understood that the outer surfaces of the retention portion 112, the breaking portion 113 and the pulling portion 114 all refer to the outermost wall surfaces along the radial direction d.
[0092] In one embodiment, the rivet tube 121 is extended along the riveting direction F, and includes a first end 1214 and a second end 1215 arranged at intervals along the riveting direction F. The first end 1214 is the end of the rivet tube 121 away from the rivet cap 122. The first end 1214 is connected to the connecting portion 111, and the second end 1215 is connected to the cap body 1221. The rivet tube 121 also includes a tube body 1216 located between the first end 1214 and the second end 1215 along the riveting direction F, that is, the two ends of the tube body 1216 spaced along the riveting direction F are respectively connected to the first end 1214 and the second end 1215. The through cavity 120 is formed by sequentially penetrating the first end 1214, the tube body 1216, the second end 1215 and the cap body 1221 along the riveting direction F. The through cavity 120 can be formed during the integral molding process of the riveting sleeve 12, or can be formed by mechanical cutting, chemical etching, etc. after the main body of the riveting sleeve 12 is manufactured.
[0093] In one embodiment, the rivet sleeve 12 has a third surface 123 , which is the inner wall surface of the through cavity 120 surrounded by the rivet sleeve 12 . The third surface 123 is constructed to be spaced apart from the outer surfaces of the retention portion 112 , the breaking portion 113 and the pulling portion 114 .
[0094] In one embodiment, the cap body 1221 is connected to the rivet tube 121 and is protruded in a direction away from the third surface 123, and the periphery of the cap body 1221 is protruded compared to the rivet tube 121. The cap body 1221 is configured to abut against a riveting tool to provide support for the rivet sleeve 12 so that the rivet sleeve 12 can be pressed and bulged.
[0095] In one embodiment, the cap body 1221 further has a fourth surface 12212 , and the fourth surface 12212 and the second surface 12211 are located on opposite sides of the cap body 1221 along the riveting direction F, and the fourth surface 12212 is configured to abut against a riveting tool.
[0096] In this embodiment, the rivet sleeve 12 is generally in the shape of a hollow column extending along the riveting direction F, and may be a rotationally symmetrical structure with the nail core 11 as the axis; the first surface 1211 is the outer surface of the rivet tube 121 away from the nail core 11 (i.e., the first surface 1211 is the outermost wall surface of the rivet tube 121 along the radial direction d), and the first surface 1211 is disposed opposite to the third surface 123. The second surface 12211 is generally perpendicular to the first surface 1211, so that the second surface 12211 can better match the outer surface of the part 181; the fourth surface 12212 may be an arcuate surface.
[0097] Further integration Figure 1 and Figure 2 As shown, in one embodiment, the concave structure 1212 is extended along the riveting direction F. One end of the concave structure 1212 is spaced from the second surface 12211 , and the other end of the concave structure 1212 extends to the connection between the rivet tube 121 and the nail core 11 .
[0098] In this embodiment, the concave structure 1212 extends from the first end 1214 through the tube body 1216 to the second end 1215 along the riveting direction F. That is, the concave structure 1212 extends from the connection between the rivet tube 121 and the connecting portion 111 along the riveting direction F to pass through the tube body 1216 until it reaches the area where the second end 1215 is located, and the concave structure 1212 is spaced apart from the second surface 12211.
[0099] In one embodiment, the gravure structure 1212 includes at least one gravure pattern 12120 , and the gravure pattern 12120 includes a connecting area 12121 and a thinning area 12122 , the thickness of the thinning area 12122 is less than the thickness of the connecting area 12121 , and / or the thinning area 12122 is arranged throughout the first surface 1211 .
[0100] It can be understood that the connection area 12121 refers to the area where the rivet tube 121 is provided with the intaglio pattern 12120, the thickness of which is similar to the area where the rivet tube 121 is not provided with the intaglio pattern 12120, and the two are connected; the thinning area 12122 refers to the area where the thickness of the rivet tube 121 is provided with the intaglio pattern 12120 is significantly less than the area where the rivet tube 121 is not provided with the intaglio pattern 12120, and / or the thinning area 12122 refers to the area where the rivet tube 121 is hollowed out in the area provided with the intaglio pattern 12120. By providing the intaglio pattern 12120 with the connection area 12121 and the thinning area 12122, the mechanical strength of each area of the rivet sleeve 12 is adjusted, and the bulging process of the rivet sleeve 12 is regulated. By providing a suitable intaglio pattern 12120, the connection strength between the blind rivet 10 and the part 181 can be improved.
[0101] In one embodiment, the intaglio pattern 12120 includes a plurality of thinned areas 12122 , and the plurality of thinned areas 12122 are dispersedly disposed around the connecting area 12121 .
[0102] In this embodiment, the concave pattern 12120 is roughly quadrilateral, and the connection area 12121 is roughly elliptical with narrower ends and wider middle along the riveting direction F. The connection area 12121 is located in the middle of the concave pattern 12120, and the four tops of the elliptical connection area 12121 overlap with the four sides of the quadrilateral concave pattern 12120 respectively, and the outer boundary of the elliptical connection area 12121 and the boundary of the quadrilateral concave pattern 12120 define four thinning areas 12122. It can be understood that the concave pattern 12120 with the aforementioned shape can help form a relatively regular raised structure 1213.
[0103] In one embodiment, the rivet tube 121 is in a hollow column shape surrounding the nail core 11. The intaglio structure 1212 includes a plurality of intaglio patterns 12120, and the plurality of intaglio patterns 12120 are disposed on the first surface 1211 at intervals around the nail core 11.
[0104] In this embodiment, a plurality of intaglio patterns 12120 are respectively extended along the riveting direction F, and the structures of the plurality of intaglio patterns 12120 are the same. The plurality of intaglio patterns 12120 are arranged at intervals from each other, that is, any intaglio pattern 12120 is arranged at intervals from the other two intaglio patterns 12120. It can be understood that the intaglio structure 1212 having a plurality of intaglio patterns 12120 arranged at intervals can make the rivet tube 121 bulge evenly in all directions, so as to form a relatively regular convex structure 1213.
[0105] Further integration Figure 1 and Figure 4 As shown, in one embodiment, the fastening structure 1222 includes at least one convex nail 12220. The convex nail 12220 is connected to the second surface 12211 and protrudes toward the side where the rivet tube 121 is located along the riveting direction F. The convex nail 12220 has a spike-shaped top 12221.
[0106] It can be understood that the second surface 12211 is configured to be disposed toward the connecting portion 111, and the convex stud 12220 disposed on the second surface 12211 can be embedded in the part 181 after riveting, thereby improving the connection strength between the rivet cap 122 and the part 181, and especially enhancing the connection strength in the shear direction f perpendicular to the riveting direction F. Further, the spike-shaped top 12221 means that the top 12221 of the convex stud 12220 away from the second surface 12211 along the riveting direction F has a smaller area, which facilitates the embedding of the convex stud 12220 into the part 181.
[0107] In this embodiment, the top 12221 of the protruding nail 12220 is a pyramid with four inclined surfaces; in other embodiments, the top 12221 of the protruding nail 12220 can also be a cone or other spike shape, which is not repeated here. In this embodiment, the shear direction f is the direction in which the stacked parts 181 can overcome the friction force and slide relative to each other.
[0108] In one embodiment, the fastening structure 1222 includes a plurality of protruding nails 12220, and the plurality of protruding nails 12220 are disposed at intervals on the second surface 12211. The plurality of protruding nails 12220 are connected to the second surface 12211 and protrude along the riveting direction F toward the side where the rivet tube 121 is located.
[0109] In this embodiment, the plurality of convex studs 12220 are divided into a plurality of groups along the shear direction f and are arranged in an annular spaced arrangement, each group of convex studs 12220 includes a circle of a plurality of convex studs 12220 that are dispersedly arranged in a substantially circular shape around the first surface 1211, and the plurality of groups of convex studs 12220 are arranged in a substantially concentric circle spaced arrangement around the first surface 1211. In other embodiments, the plurality of convex studs 12220 may also be in other regular distribution forms or in a scattered irregular distribution form, which will not be described in detail herein.
[0110] In other embodiments, the fastening structure 1222 may also include other protruding structures, such as convex strips, claws, barbs, etc., which are not described in detail here.
[0111] Further integration Figures 5 to 8 As shown, in one embodiment, the blind rivet 10 is used to clamp and lock multiple parts 181, and the blind rivet 10 is configured to penetrate the multiple parts 181 along the riveting direction F. The thickness of the parts 181 clamped and locked by the blind rivet 10 along the riveting direction F is H, and the distance between the edge of the concave structure 1212 close to the rivet cap 122 and the second surface 12211 along the riveting direction F is L, wherein L is less than or equal to H.
[0112] In this embodiment, the gravure structure 1212 is extended along the riveting direction F, and "L" corresponds to the distance between the edge of the gravure structure 1212 closest to the second surface 12211 along the riveting direction F and the second surface 12211, and the edge is part of the boundary of the gravure structure 1212; at least a portion of the gravure structure 1212 close to the rivet cap 122 along the riveting direction F must be located in the mounting hole 1810.
[0113] It can be understood that the distance L from the edge of the concave structure 1212 close to the rivet cap 122 to the second surface 12211 is less than or equal to the thickness H of the portion of the plurality of parts 181 clamped by the blind rivet 10, and therefore, at least a portion of the concave structure 1212 close to the second surface 12211 can be located in the mounting hole 1810. Due to the presence of this portion of the concave structure 1212, the portion of the rivet tube 121 located in the mounting hole 1810 can also bulge along the shear direction f during the bulging process, so that the rivet tube 121 can abut against the inner wall and / or edge of the mounting hole 1810, thereby filling the gap between the rivet tube 121 and the part 181, and preventing the part 181 from slipping along the shear direction f due to the gap.
[0114] In this embodiment, the connection of two parts 181 is taken as an example for demonstration. The two parts 181 are stacked and include a first outer surface 1811 and a second outer surface 1812 that are opposite to each other, and a mounting hole 1810 that passes through the two parts 181 is provided. The connection process can be roughly as follows: one end of the blind rivet 10 provided with the rivet sleeve 12 is inserted into the mounting hole 1810 until the rivet cap 122 contacts the first outer surface 1811, at which time the connecting portion 111 extends out of the mounting hole 1810, at least part of the concave structure 1212 close to the second surface 12211 is located in the mounting hole 1810, and the remaining part extends out of the mounting hole 1810 and is located on the same side of the part 181 as the connecting portion 111; a rivet pulling tool is used to connect with the pulling portion 114, and the rivet cap 122 can also abut against the rivet pulling tool, and then the rivet pulling tool pulls the nail core 11 along the rivet pulling direction F to drive the connecting portion 111 to move. The connecting portion 111 squeezes the rivet tube 121, causing the rivet tube 121 to bulge along the shear direction f to form a convex structure 1213. The convex structure 1213 further squeezes the second outer surface 1812. The portion of the concave structure 1212 located in the mounting hole 1810 also has a tendency to bulge, causing the portion of the rivet tube 121 located in the mounting hole 1810 corresponding to the concave structure 1212 to bulge along the shear direction f and abut against the inner wall and / or edge of the mounting hole 1810. At the same time, the rivet cap 122 is squeezed toward the side where the part 181 is located, causing the fastening structure 1222 to be embedded in the part 181 from the first outer surface 1811. When the blind rivet 10 is riveted, the breaking portion 113 breaks at the breaking structure 1131, and the pulling portion 114 is separated from the retained portion 112, and the retained portion 112 is still located in the rivet sleeve 12.
[0115] In other embodiments, multiple parts 181 (for example, 3, 5, 10) may be stacked or spliced. Those skilled in the art will understand that the blind rivet 10 of the present application may also be used for mechanical connection of multiple parts 181, which will not be elaborated here.
[0116] Further integration Fig. 9As shown, the embodiment of the present application further provides a vehicle 1, which includes a vehicle body 18 and a blind rivet 10 as in any one of the aforementioned embodiments. The vehicle body 18 includes a plurality of parts 181, and the plurality of parts 181 have mounting holes 1810 arranged therethrough; the blind rivet 10 penetrates through the plurality of parts 181 along the riveting direction F, the mounting hole 1810 is used to accommodate the mandrel 11 and the rivet tube 121, one end of the concave structure 1212 close to the second surface 12211 is located in the mounting hole 1810, the region of the rivet tube 121 provided with the concave structure 1212 bulges and abuts against the inner wall and / or edge of the mounting hole 1810, and the fastening structure 1222 is engaged and snap-fitted with at least one of the plurality of parts 181.
[0117] It can be understood that the multiple parts 181 connected by the blind rivet 10 can be any two parts 181 in the vehicle 1 that have mounting holes 1810 and can be mechanically connected, and the parts 181 include but are not limited to frame steel / aluminum components. In this embodiment, the parts 181 can be sheet metal parts on the frame that need to be riveted, and the blind rivet 10 can achieve mechanical connection between the sheet metal parts.
[0118] In order to more clearly show the technical solution of the present application, the present application uses the three-dimensional coordinate system composed of the first direction X, the second direction Y and the third direction Z as a spatial reference to display the vehicle 1 provided in the embodiment of the present application. Among them, the first direction X, the second direction Y and the third direction Z are the three-axis directions of the Cartesian coordinate system, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other; specifically, the first direction X can correspond to the length direction of a common car (or the direction facing the front of a common car), the second direction Y can correspond to the width direction of a common car (or the direction facing the side of a common car), and the third direction Z can correspond to the height direction of a common car (or the direction facing the bottom of a common car). The riveting direction F has an intersecting or parallel relationship with any one of the first direction X, the second direction Y and the third direction Z, and the shearing direction f has a corresponding perpendicular relationship with the riveting direction F.
[0119] In the above, the specific implementation of the present application is described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific implementation of the present application without departing from the spirit and scope of the present application. These changes and substitutions are all within the scope defined by the present application.
Claims
1. A blind rivet, characterized in that: include: A nail core extending along a riveting direction; A rivet sleeve, comprising a rivet tube and a rivet cap connected to each other, wherein the rivet cap is arranged on one side of the rivet tube along the riveting direction, the rivet tube and the rivet cap are both sleeved on the outside of the nail core, and one end of the rivet tube away from the rivet cap is fixedly connected to the nail core; Among them, the rivet tube has a first surface facing away from the nail core, and the rivet tube also has a gravure structure, which is recessed from the first surface and / or penetrates the first surface. The rivet cap includes a cap body and a fastening structure, the cap body is connected to the rivet tube, and the cap body has a second surface arranged toward the side where the rivet tube is located, and the fastening structure is arranged on the second surface.
2. The blind rivet according to claim 1, characterized in that: The blind rivet is used to clamp and lock multiple parts. The blind rivet is constructed to penetrate the multiple parts along the riveting direction. The thickness of the parts clamped and locked by the blind rivet along the riveting direction is H. The distance between the edge of the concave structure close to the rivet cap and the second surface along the riveting direction is L, wherein L is less than or equal to H.
3. The blind rivet according to claim 1, characterized in that: The gravure structure is extended along the riveting direction, one end of the gravure structure is spaced apart from the second surface, and the other end of the gravure structure extends to the connection between the rivet tube and the nail core.
4. The blind rivet according to claim 1, characterized in that: The gravure structure includes at least one gravure pattern, and the gravure pattern includes a connecting area and a thinning area. The thickness of the thinning area is smaller than the thickness of the connecting area, and / or the thinning area is arranged throughout the first surface.
5. The blind rivet according to claim 4, characterized in that: The intaglio pattern includes a plurality of thinning areas, and the plurality of thinning areas are dispersedly arranged around the connecting area.
6. The blind rivet according to claim 1, characterized in that: The rivet tube is in the shape of a hollow column surrounding the nail core, and the gravure structure includes a plurality of gravure patterns, which are arranged at intervals on the first surface surrounding the nail core.
7. The blind rivet according to claim 1, characterized in that: The fastening structure includes at least one protruding nail, which is connected to the second surface and protrudes toward the side where the rivet tube is located along the riveting direction.
8. The blind rivet according to claim 1, characterized in that: The fastening structure includes a plurality of protruding nails, the plurality of protruding nails are arranged at intervals on the second surface, the plurality of protruding nails are connected to the second surface and protrude toward the side where the rivet tube is located along the riveting direction.
9. The blind rivet according to claim 1, characterized in that: The rivet sleeve is provided with a through cavity which passes through the rivet tube and the rivet cap along the riveting direction; the nail core comprises a pulling portion, a breaking portion, a retaining portion and a connecting portion which are sequentially connected along the riveting direction; the connecting portion is arranged outside the through cavity; the rivet tube is connected to the connecting portion; the retaining portion is accommodated in the through cavity; at least a section of the pulling portion is arranged outside the through cavity; and the breaking portion is configured to connect or separate the pulling portion from the retaining portion.
10. A vehicle, characterized in that: include: a vehicle body comprising a plurality of parts having mounting holes disposed therethrough; The blind rivet according to any one of claims 1 to 9, wherein the blind rivet is arranged to penetrate the multiple parts along the riveting direction, the mounting hole is used to accommodate the rivet core and the rivet tube, the end of the gravure structure close to the second surface is located in the mounting hole, the area of the rivet tube where the gravure structure is provided is bulged and abuts against the inner wall and / or edge of the mounting hole, and the fastening structure is engaged with at least one of the multiple parts.