CN110017319B - Rivet with screw - Google Patents
Rivet with screw Download PDFInfo
- Publication number
- CN110017319B CN110017319B CN201910304121.8A CN201910304121A CN110017319B CN 110017319 B CN110017319 B CN 110017319B CN 201910304121 A CN201910304121 A CN 201910304121A CN 110017319 B CN110017319 B CN 110017319B
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- 239000000463 material Substances 0.000 claims abstract description 35
- 238000010276 construction Methods 0.000 claims description 9
- 230000004308 accommodation Effects 0.000 claims description 7
- 230000001965 increasing effect Effects 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000010008 shearing Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/08—Hollow rivets; Multi-part rivets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Connection Of Plates (AREA)
Abstract
A rivet includes a body portion and a core portion. The body portion having opposite first and second ends, wherein the body portion has a sidewall at its second end and extending in a circumferential direction of the body portion; a core portion provided at a second end of the body portion, wherein the core portion is accommodated in a side wall of the body portion, and the core portion has an end face capable of abutting against at least one workpiece when the rivet rivets the plurality of workpieces, so that a material of the workpieces to be riveted is pressed by the end face to flow to an outside of the core portion; wherein an accommodating space is formed between the core portion and the side wall of the body portion, the accommodating space being for accommodating a material of a work piece flowing thereinto when the rivet rivets the plurality of work pieces, and deforming the side wall of the body portion at least partially in an outer direction thereof. According to the technical scheme, the rivet has good locking capability, and meanwhile, the joint of the connected workpieces has good sealing performance. The rivet has the advantages of simple structure and convenient installation, and can greatly reduce the production cost.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to a rivet.
Background
When the self-piercing rivet is used for sheet connection, the connecting position is random as no pre-punching is needed on the connected plates, and the self-piercing rivet has no waste nail core after connection, saves materials, is simple to operate and high in efficiency, so that the self-piercing rivet is very suitable for mass production line operation and is very wide in application.
Fig. 1 is a schematic diagram of riveting a conventional self-piercing rivet, which is mostly a hollow rivet, and includes a head 11 and a foot 12 integrally formed. The thicknesses of the head 11 and the foot 12 are similar, so that a cavity 13 with a larger space is formed inside the foot 12, and the material deformed by the plate material flows into the cavity 13 during the connection process. In the riveting process, under the combined action of the convex hull 311 in the middle of the lower die 31 and the upper die 32, the first workpiece 21 and the second workpiece 22 are deformed under pressure at the positions corresponding to the convex hull 311, a large amount of metal at the positions of the two workpieces flows into the inner cavity 13 of the foot 12, the lower edge of the rivet foot 12 is turned outwards under the extrusion of the convex hull 311 of the lower die 31 so as to generate shearing force on the first workpiece 21, the first workpiece 21 breaks under the condition of bearing large tension and shearing force, and the lower edge of the rivet foot 12 passes through the first workpiece 21 to be buckled into the second workpiece 22 so as to form interlocking with the two workpieces.
In the existing self-piercing rivet connection technology, since the rivet needs to penetrate the first workpiece 21 when forming an interlocking structure with the plate material, so that the fluid between the first workpiece 21 and the second workpiece 22 can penetrate through the gap between the rivet and the first workpiece 21, the existing self-piercing rivet is not suitable for connection with high sealing requirements such as water resistance.
Disclosure of Invention
In order to overcome the deficiencies in the prior art, embodiments of the present invention provide a rivet for solving at least one of the above-mentioned problems.
The embodiment of the application discloses: a rivet for joining a plurality of workpieces, comprising:
a body portion having opposite first and second ends, wherein the body portion has a sidewall at its second end and extending in a circumferential direction of the body portion;
a core portion provided at a second end of the body portion, wherein the core portion is accommodated in a side wall of the body portion, and the core portion has an end face capable of abutting against at least one workpiece when the rivet rivets a plurality of workpieces, so that a material of the workpieces to be riveted is pressed by the end face to flow to an outside of the core portion;
wherein an accommodation space is formed between the core and the side wall of the main body portion, the accommodation space being for accommodating a material of a work piece flowing thereinto when the rivet rivets the plurality of work pieces, and deforming the side wall of the main body portion at least partially in an outer direction thereof.
Specifically, the main body portion and the core portion are of an integral construction, or the main body portion and the core portion are of a split construction.
In particular, the accommodation space comprises a gap between an inner surface of the side wall and an outer surface of the core.
In particular, the accommodation space further includes a space defined by an end face of the core portion recessed into the main body portion.
Specifically, the end surface of the core is arranged protruding from the second end of the main body, or the end surface of the core is flush with the second end of the main body, or the end surface of the core is arranged recessed from the second end of the main body.
In particular, the core extends from the second end of the body portion to the first end of the body portion.
Specifically, the maximum outer diameter of the first end of the body portion is greater than the maximum outer diameter of the second end of the body portion.
In particular, the core has a length adjacent the end face over which the cross-sectional outer diameter of the core decreases from the end face toward the first end of the body portion.
In particular, the core has a skirt adjacent the end face, the skirt protruding from an outer surface of the core and extending circumferentially along the core.
In particular, the skirt has a slope toward the first end of the body portion.
Specifically, the skirt is a stepped surface raised from the outer surface of the core.
In particular, the inner diameter of the side wall of the body portion increases as seen in the direction from the first end to the second end.
Specifically, the inner surface of the side wall has a chamfer.
Specifically, the end face of the core has a chamfer.
Specifically, the main body part and the core part are of split type construction, and the main body part and the core part are connected in a transition fit, interference fit, threaded connection or cementing connection mode.
In particular, the cross section of the core is circular, oval, square, diamond, trapezoidal, semi-circular or triangular, or any other shaped cross section.
Specifically, the cross-sectional areas of the cores in the axial direction are equal, or the cross-sectional areas of the cores in the axial direction are not equal.
In particular, the body portion and/or the core portion is made of aluminum, cold-headed steel, stainless steel or alloy steel, or any other material.
The embodiment also discloses a system structure, including first work piece and second work piece and be used for connecting first work piece and second work piece rivet according to this embodiment, first work piece with the second work piece is followed the first end of main part is arranged to the second end direction, first work piece with the second work piece is all in the integral type structure after the riveting.
Specifically, the system structure further includes at least one third workpiece, the first workpiece, and the second workpiece being arranged along the first end of the main body portion in a second end direction, the third workpiece being pierced when riveted by the rivet.
Embodiments of the present invention have at least one of the following benefits:
1. in the punching and riveting process, most of materials at the positions of the two workpieces corresponding to the rivet can only flow to the outer side of the rivet due to the restriction of the core part in the axial direction, so that the materials at the interlocking positions of the rivet and the workpieces are increased, the shearing force of the second end of the main body part of the first workpiece is ensured not to be penetrated, the locking function is realized, and the sealing requirements of waterproof and the like of the connecting part are solved.
2. When the rivet is used for riveting, the installation die can adopt a flat die, namely, the die cavity of the lower die is a simple plane, no special shape is needed, so that the installation die has a simple structure, and the centering requirement between the riveting equipment and the installation die is reduced (as shown in fig. 1, when the existing self-piercing rivet is used for riveting, the riveting equipment and the convex hull of the lower die are required to be centered).
3. The main body part and the core part can be manufactured in a split mode, the manufacturing difficulty of the die of the main body part can be simplified, the service life of the die is prolonged, and the main body part and the core part are manufactured independently, so that the core part can be manufactured into a relatively complex structure to facilitate improvement of the locking capability of the rivet.
4. The main body part and the core part can be made of the same or different materials, which is beneficial to saving the material cost; in addition, the main body part and the core part can be made of aluminum materials, an electroplating process can be omitted for the rivet, the production cost is reduced, the weight of the rivet is greatly reduced, and the design of light weight is realized.
5. According to the rivet, the skirt edge structure is arranged on the core part, so that when the rivet is riveted, the interlocking function of the core part and the first workpiece is increased, and on the other hand, the skirt edge can further push the second end of the main body part to outwards turn, so that the interlocking amount of the second end of the main body part and the workpiece is enlarged, and the stretching resistance of a rivet riveting joint is greatly improved.
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a self-piercing rivet of the prior art and a schematic working diagram thereof;
FIG. 2a is a schematic cross-sectional view of a rivet according to an embodiment of the present invention;
FIG. 2b is another schematic cross-sectional view of the rivet according to an embodiment of the present invention;
FIG. 2c is a further schematic cross-sectional view of the rivet according to the embodiment of the present invention;
FIG. 3 is a schematic diagram of the operation of the rivet according to the embodiment of the present invention;
FIG. 4a is a schematic view of a structure of the core according to an embodiment of the present invention;
FIG. 4b is another schematic structural view of the core in an embodiment of the present invention;
FIG. 4c is a schematic view of yet another construction of the core according to an embodiment of the invention;
FIG. 4d is a schematic view of yet another construction of the core according to an embodiment of the invention;
FIG. 5a is a schematic view of a skirt according to an embodiment of the present invention;
FIG. 5b is a schematic view of another configuration of the skirt according to an embodiment of the invention;
FIG. 5c is a schematic view of another configuration of the skirt according to an embodiment of the present invention.
Reference numerals of the above drawings: 11-head, 12-foot, 13-inner cavity, 21-first work piece, 22-second work piece, 31-lower die, 311-convex hull, 32-upper die, 33-swager, 4-main body, 41-first end, 42-second end, 43-accommodation space, 44-side wall, 5-core, 51-end face, 52-skirt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 2a, the rivet according to the present embodiment is used for connecting a plurality of workpieces, and includes:
the body portion 4, said body portion 4 having opposite first and second ends 41, 42, wherein the body portion 4 has a side wall 44 at its second end 42 and extending in the circumferential direction of the body portion 4.
A core 5, said core 5 being arranged at the second end 42 of said body part 4, said core 5 being located inside the second end 42 of said body part 4, which is accommodated in a side wall 44.
An accommodating space 43 is formed between the core 5 and the side wall 44 of the body 4, the accommodating space 43 being configured to accommodate a material of a work piece flowing thereinto when the rivet rivets the plurality of work pieces, and to deform the side wall 44 of the body 4 at least partially in an outer direction thereof. Specifically, in the present embodiment, the deformation of the side wall 44 of the main body 4 at least partially in the outer direction thereof means that the side wall 44 of the main body 4 at least partially deforms in the outer direction thereof. In other embodiments, the deformation means that the side wall 44 moves in an outward direction relative to the main body 4, deforming the rivet as a whole.
The core 5 has an end face 51 that can abut against the workpiece at the time of caulking. When a plurality of workpieces are riveted by rivets, the end face 51 can abut against at least one workpiece, and the end face 51 presses the material of the workpiece to be riveted to flow to the outside of the core 5.
As shown in fig. 3, when the rivet according to the present embodiment is riveted, the first workpiece 21 and the second workpiece 22 to be connected are pre-tightened by the pressing device 33 and the lower die 31; then, the upper die 32 is used for pressing downwards, at this time, under the action of the upper die 32, the end face 51 of the core 5 presses the first workpiece 21 and the second workpiece 22 downwards, the two workpieces are deformed, and most of the material corresponding to the rivet of the two workpieces can only flow to the outer side of the rivet (the material at the interlocking position of the rivet and the workpiece is increased and is not easy to penetrate), a small part of the material of the first workpiece 21 flows into the accommodating space 43, and the small part of the material in the accommodating space 43 presses the side wall 44 at the second end 42 of the main body 4, so that the side wall 44 deforms outwards and is buckled into the first workpiece 21, and interlocking is formed. In the process, the material of the first workpiece 21 only bears small shearing force, and the material of the interlocking part of the first workpiece 21 and the rivet is increased, so that the first workpiece 21 is not easy to break, and therefore, the rivet in the embodiment realizes the interlocking with two workpieces under the condition that the first workpiece 21 is not sheared, thereby not only meeting the locking requirement, but also meeting the sealing requirement of the connecting part. It should be noted that, the rivet according to the present embodiment is not limited to locking two workpieces, but may simultaneously lock a plurality of workpieces such as three workpieces and four workpieces. The material of each workpiece comprises steel, aluminum or plastic, and the minimum thickness of each workpiece can reach 0.8mm.
With the above structure, the rivet according to the present embodiment has the following advantages:
1. in the punching and riveting process, most of materials at the positions of the two workpieces corresponding to the rivet can only flow to the outer side of the rivet due to the restriction of the core 5 in the axial direction, so that materials at the interlocking positions of the rivet and the workpieces are increased, the first workpiece 21 is ensured not to be penetrated under the shearing force action of the second end 42 of the main body part 4, the locking function is realized, and the sealing requirements of waterproof and the like of the connecting part are solved.
2. When the rivet according to this embodiment is used for riveting, the installation mold may be a flat mold, that is, a simple plane is formed in the cavity of the lower mold, and no special shape is required, so that the installation mold has a simple structure, and the centering requirement between the riveting device and the installation mold is reduced (as shown in fig. 1, when the existing self-piercing rivet is used for riveting, the riveting device and the convex hull 311 of the lower mold 31 need to be centered).
Specifically, as shown in fig. 2a, the first end 41 of the main body 4 of the rivet according to the present embodiment may be substantially planar, or may be hemispherical, the second end 42 of the main body 4 may be substantially cylindrical, and the maximum outer diameter of the first end 41 of the main body 4 may be greater than the maximum outer diameter of the second end 42 of the main body 4. The junction of the first end 41 and the second end 42 of the main body 4 is provided with a chamfer transition. The side wall 44 at the second end 42 of the body portion 4 is provided with a chamfer and the end face 51 of the core portion 5 is also provided with a chamfer to further prevent the rivet from shearing the material of the first workpiece 21. The shape of the core 5 matches the shape of the space enclosed by the side walls 44 of the second end 42 of the body 4. For example, the core 5 may have a generally cylindrical outer surface at the second end 42, and accordingly the sidewall 44 may have a generally cylindrical inner surface, but the diameter of the inner surface of the sidewall 44 may be slightly larger than the diameter of the outer surface of the core 5, e.g., more than 0.1 millimeters, thereby forming a gap between the sidewall 44 and the core 5.
Specifically, as shown in fig. 2a and 3, the main body 4 and the core 5 are integrally constructed, or the main body 4 and the core 5 are separately constructed. Further, when the main body 4 and the core 5 are in a split configuration, the core 5 may extend through the first and second ends 41, 42 of the main body 4, i.e. the core 5 may extend from the second end 42 to the first end 41. Of course, the core 5 may not extend through the first end 41 and the second end 42 of the main body 4.
By adopting the scheme, the rivet can be manufactured more flexibly and conveniently, and the main body part 4 and the core part 5 adopt a split type structure, so that the manufacturing difficulty of the mould of the main body part is simplified, and the service life of the mould is prolonged.
Specifically, as shown in fig. 2a, the accommodating space 43 is defined by a side wall 44 of the second end 42 of the main body 4 and an outer surface of the core 5, that is, the accommodating space 43 includes a gap between the side wall 44 and the core 5. As shown in fig. 2b and 2c, in other embodiments the end face 51 of the core 5 may be recessed into the body portion 4, i.e. the receiving space 43 may also comprise a space defined by the end face 51 of the core 5 recessed into the body portion 4. In other words, the end face 51 of the core 5 is arranged to protrude from the second end 42 of the body 4, or the end face 51 of the core 5 is arranged to be flush with the second end 42 of the body 4, or the end face 51 of the core 5 is arranged to be recessed from the second end 42 of the body 4. As long as the end face 51 of the core 5 can abut against the first workpiece 21 during the caulking press, a large amount of material is prevented from flowing into the accommodating space 43 when the first workpiece 21 is deformed, resulting in the first workpiece 21 being sheared by the second end 42 of the main body 4.
Referring to fig. 4b, in some embodiments, the cross-sectional outer diameter of the end of the core 5 facing away from the first end 41 of the body 4 increases from the first end 41 of the body 4 to the second end 42 of the body 4, i.e. the core 5 has a length adjacent to the end face 51 over which the cross-sectional outer diameter of the core 5 decreases from the end face towards the first end of the body. In fig. 4b, the cross-sectional outer diameter of the core 5 is gradually reduced over the entire length of the core 5. In other embodiments, the core 5 has a reduced cross-sectional outer diameter over only part of its length. As shown for example with reference to fig. 5a to 5c, the end of the core 5 facing away from the first end 41 of the body portion 4 is provided with a skirt 52, the skirt 52 protruding from the outer surface of the core 5 and extending axially along the core 5, the skirt 52 having a larger cross-sectional outer diameter than the core 5. Further, as shown in fig. 5a and 5b, the outer diameter of the cross section of the skirt 52 becomes gradually larger in the direction away from the first end 41 of the main body 4 in the axial direction, that is, the skirt 52 is substantially in the shape of a dovetail having a slope toward the first end 41. As also shown in fig. 5c, the skirt 52 is a stepped surface protruding from the outer surface of the core 5. In other embodiments, the skirt 52 is square in cross-section, but the skirt 52 has a larger cross-sectional outer diameter than the core 5. During the riveting process, the material of the first workpiece 21 flowing into the accommodating space 43 can cover and fasten the core 5 or the skirt 52, so that the core 5 or the skirt 52 and the first workpiece 21 form another interlocking structure, thereby further improving the locking capability of the rivet in the embodiment; on the other hand, the end or skirt 52 of the core 5 with the larger cross-sectional outer diameter can further push the second end 42 of the main body 4 to turn outwards, so that the interlocking amount of the second end 42 of the main body 4 and the workpiece is enlarged, and the stretching resistance of the rivet joint is greatly improved. In other words, the core 5 is provided with the enlarged diameter portion for forming the locking space with the first workpiece 21, enhancing the locking capability of the rivet.
In some embodiments, the inner diameter of the sidewall 44 of the body portion 4 increases as seen in the direction from the first end 41 toward the second end 42. If the outer diameter of the sidewall 44 is unchanged, the increasing inner diameter will cause the thickness of the sidewall 44 to gradually decrease from the second end 42 toward the first end 41, creating a wedge-like structure that facilitates deformation of the sidewall 44 outward of the rivet and partial insertion into the first workpiece 21.
Specifically, when the main body 4 and the core 5 are in a split type structure, the main body 4 and the core 5 may be connected by means of a transition fit, an interference fit, a screw connection, or a glue connection. Wherein the transition fit connection includes a clearance fit and an interference fit, but the amount of clearance obtained in the transition fit is small, so that the core 5 cannot easily fall off from the second end 42 of the main body 4 in a free state, and therefore, during the riveting process, the material of the first workpiece 21 cannot flow into the accommodating space 43 in a large amount, and the first workpiece 21 cannot be sheared by the second end 42 of the main body 4, so that the sealing performance of the riveting of the rivet is not affected.
Specifically, as shown in fig. 4a to 4d, in order to adapt to different locking requirements, the cross section of the core 5 may be any shape such as a circle, an ellipse, a square, a diamond, a trapezoid, a semicircle, or a triangle, that is, the core 5 may be any shape such as a cylinder, a cone, an ellipsoid, a square, or the like. Further, the cross-section of the core 5 in the axial direction thereof may have an equal area, such as a cylinder, or may have an unequal area, such as a cone.
Specifically, thanks to the locking principle of the rivet according to the present embodiment (that is, the main body of the rivet does not need to pierce the first workpiece 21, so that the hardness and strength requirements of the main body of the rivet are low), the main body 4 and the core 5 may be made of any material such as aluminum, cold forging steel, stainless steel or alloy steel, and the rivet made of aluminum may be used to cancel the electroplating process for the rivet, thereby reducing the production cost, greatly reducing the weight of the rivet, and realizing a lightweight design. According to the material requirements of the workpieces to be connected, the materials of the main body part 4 and the core part 5 of the same rivet can be the same or different, so that the effects of not only meeting the locking effect, but also saving the cost are achieved.
As shown in fig. 3, the system structure according to the present embodiment includes a first workpiece 21 and a second workpiece 22, and a rivet according to the present embodiment for connecting the first workpiece 1 and the second workpiece 22, wherein the first workpiece 21 and the second workpiece 22 are arranged along a first end 41 of the main body portion 4 toward a second end 42, and the first workpiece 21 and the second workpiece 22 are integrally configured after being riveted. Specifically, the first workpiece 21 and the second workpiece 22 maintain the integral structure before caulking after caulking, and are not pierced or sheared by rivets, so that the system structure of the present embodiment has good sealability. Further, the system structure further comprises at least one third workpiece (not shown), the third workpiece, the first workpiece 21 and the second workpiece 22 are arranged along the first end 41 to the second end 42 of the main body 4, the third workpiece is pierced when being riveted by the rivet, that is, after being riveted, the position, corresponding to the rivet, of the third workpiece is sheared by the rivet, so that the third workpiece is changed into two parts, and the first workpiece 21 and the second workpiece 22 still respectively maintain the integrated structure. It should be noted that the number of the third workpieces is not limited to one, and may be plural, and the plural third workpieces are pierced, but the first workpiece 21 and the second workpiece 22 are not pierced, so that the air tightness of the system structure is ensured, and the locking performance of the rivet to the plural workpieces is also ensured.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (18)
1. A rivet for riveting a plurality of workpieces, comprising:
a body portion having opposite first and second ends, wherein the body portion has a sidewall at its second end and extending in a circumferential direction of the body portion;
a core portion provided at a second end of the body portion, wherein the core portion is accommodated in a side wall of the body portion, and the core portion has an end face capable of abutting against at least one workpiece when the rivet rivets a plurality of workpieces, so that a material of the workpieces to be riveted is pressed by the end face to flow to an outside of the core portion;
wherein an accommodation space is formed between the core and the side wall of the main body portion, the accommodation space being for accommodating a material of a work piece flowing thereinto when the rivet rivets the plurality of work pieces, and deforming the side wall of the main body portion at least partially in an outer direction thereof; the accommodation space includes a gap between an inner surface of the side wall and an outer surface of the core, and a space defined by an end surface of the core recessed into the main body portion;
the plurality of workpieces at least comprise a first workpiece and a second workpiece, the first workpiece and the second workpiece are distributed along the first end of the main body part towards the second end, and the rivet can be used for stamping one end, deviating from the workpieces, of the rivet through the upper die towards the lower die under the condition that the workpieces are pre-tightened through the pressing device and the lower die when the workpieces are riveted, so that the first workpiece and the second workpiece are of an integrated structure after materials of the first workpiece and the second workpiece flow into the accommodating space.
2. A rivet according to claim 1, in which the body portion and the core portion are of unitary construction, or the body portion and the core portion are of split construction.
3. A rivet according to claim 1, in which the end face of the core is disposed protruding from the second end of the body portion, or the end face of the core is flush with the second end of the body portion, or the end face of the core is disposed recessed from the second end of the body portion.
4. The rivet of claim 1, wherein the core extends from the second end of the body portion to the first end of the body portion.
5. The rivet according to claim 1, wherein the maximum outer diameter of the first end of the body portion is greater than the maximum outer diameter of the second end of the body portion.
6. A rivet according to claim 1, in which the core has a length adjacent the end face over which the cross-sectional outer diameter of the core decreases from the end face towards the first end of the body portion.
7. A rivet according to claim 1, in which the core has a skirt adjacent the end face, the skirt projecting from the outer surface of the core and extending circumferentially along the core.
8. The rivet of claim 7, wherein the skirt has a chamfer toward the first end of the body portion.
9. The rivet of claim 7, wherein the skirt is a stepped surface raised from an outer surface of the core.
10. A rivet according to claim 1, in which the side walls of the body portion have an increasing inner diameter as seen in the direction from the first end to the second end.
11. A rivet according to claim 1, in which the inner surface of the side wall has a chamfer.
12. A rivet according to claim 1, in which the end face of the core has a chamfer.
13. A rivet according to claim 1, in which the body portion and the core portion are of split construction, the body portion and the core portion being connected by means of a transition fit, an interference fit, a threaded connection or a glued connection.
14. A rivet according to claim 1, in which the core is circular, oval, square, diamond, trapezoid, semi-circular or triangular in cross-section.
15. A rivet according to claim 1, in which the core portions are of equal cross-sectional area in the axial direction, or the core portions are of unequal cross-sectional area in the axial direction.
16. A rivet according to claim 1, in which the body portion and/or the core portion is made of aluminium, cold-headed steel, stainless steel or alloy steel.
17. A system arrangement comprising first and second workpieces, and a rivet as claimed in any one of claims 1 to 16 for joining the first and second workpieces, the first and second workpieces being arranged in a second direction along a first end of the body portion, the first and second workpieces each being of unitary construction after riveting.
18. The system structure of claim 17, further comprising at least one third workpiece, the first workpiece, and the second workpiece being arranged in a direction along the first end of the body portion toward the second end, the third workpiece being pierced upon being riveted by the rivet.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304121.8A CN110017319B (en) | 2019-04-16 | 2019-04-16 | Rivet with screw |
| US16/530,424 US11821450B2 (en) | 2019-04-16 | 2019-08-02 | Rivet |
| PCT/US2020/035209 WO2020215098A1 (en) | 2019-04-16 | 2020-05-29 | Rivet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304121.8A CN110017319B (en) | 2019-04-16 | 2019-04-16 | Rivet with screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110017319A CN110017319A (en) | 2019-07-16 |
| CN110017319B true CN110017319B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910304121.8A Active CN110017319B (en) | 2019-04-16 | 2019-04-16 | Rivet with screw |
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| Country | Link |
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| CN (1) | CN110017319B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11821450B2 (en) * | 2019-04-16 | 2023-11-21 | Penn Engineering & Manufacturing Corp. | Rivet |
| CN112324780B (en) * | 2020-11-19 | 2022-04-26 | 陕西科技大学 | Combined tubular self-punching rivet and method for connecting plates based on same |
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| Publication number | Publication date |
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| CN110017319A (en) | 2019-07-16 |
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