CN218718038U - Rivet - Google Patents
Rivet Download PDFInfo
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- CN218718038U CN218718038U CN202220912244.7U CN202220912244U CN218718038U CN 218718038 U CN218718038 U CN 218718038U CN 202220912244 U CN202220912244 U CN 202220912244U CN 218718038 U CN218718038 U CN 218718038U
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- rivet
- section
- guide
- riveting
- pressure
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Abstract
The utility model provides a rivet, which is used for connecting a plurality of parts with through holes, the rivet is provided with a rivet head and a rivet rod, the rivet head is coaxially connected with the rivet rod, the rivet rod comprises a guide part and a rivet pressing part, and the guide part is positioned at one end of the rivet rod, which is far away from the rivet head; the press riveting part is positioned between the guide part and the rivet head, the press riveting part comprises a first press riveting section and a second press riveting section which are connected, the first press riveting section is connected with the rivet head, and the second press riveting section is connected with the guide part; the guide part with clearance fit between the part, first pressure rivet section with the second pressure rivet section all with interference fit between the part, wherein, the diameter of first pressure rivet section is greater than the diameter of second pressure rivet section. The utility model discloses technical scheme rivets the section through having increased the second pressure and rivets the precision in order to improve the pressure of rivet, has avoided the pressure to rivet the in-process and has appeared pressing the emergence of riveting crooked, unable pressure and hole deformation scheduling problem.
Description
Technical Field
The utility model relates to a mechanical connection technical field especially relates to a rivet.
Background
The conventional riveting structure is formed by matching a rivet made of a hard material with a hole wall made of a soft material. Along with the progress of the times, the requirements on the material of the product are higher and higher, the riveting requirement on the same material is higher and higher, and relatively, the difficulty of the riveting process is higher and higher, and the requirement on the riveting precision is also higher and higher. The existing rivet is low in riveting precision, and the problems of pressing and riveting deflection, incapability of pressing in, hole deformation and the like easily occur in the pressing and riveting process.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a rivet, aim at improving the pressure riveting precision of rivet.
In order to achieve the above object, the utility model provides a riveting point for connect a plurality of parts that have a perforation, the rivet has rivet head and riveting pole, the rivet head with riveting pole coaxial coupling, the riveting pole includes:
the guide part is positioned at one end of the rivet rod, which is far away from the rivet head;
the press riveting part is positioned between the guide part and the rivet head and comprises a first press riveting section and a second press riveting section which are connected, the first press riveting section is connected with the rivet head, and the second press riveting section is connected with the guide part;
the guide part with clearance fit between the part, first pressure rivet section with the second pressure rivet section all with interference fit between the part, wherein, the diameter of first pressure rivet section is greater than the diameter of second pressure rivet section.
In an embodiment, the guide portion comprises a first guide section and a second guide section, the second guide section is located between the first guide section and the second rivet pressing section, and the diameter of the second guide section is larger than that of the first guide section.
In one embodiment, the surface of the first rivet pressing section and/or the second rivet pressing section is provided with a flute in a concave manner.
In one embodiment, the flutes extend in an axial direction of the rivet stem.
In an embodiment, the flute extends from the end of the first rivet pressing section close to the rivet head to the end of the second guide section close to the first guide section.
In one embodiment, the chip grooves are distributed uniformly around the central axis of the rivet rod.
In one embodiment, the distance between two adjacent flutes is consistent.
In one embodiment, the first rivet pressing section is smoothly connected with the second rivet pressing section;
and/or the second rivet pressing section is smoothly connected with the guide part.
In one embodiment, a gap is left between the first rivet pressing section and the rivet head.
The utility model discloses technical scheme rivets the section through having increased the second pressure and rivets the precision in order to improve the pressure of rivet, has avoided the pressure to rivet the in-process and has appeared pressing the emergence of riveting crooked, unable pressure and hole deformation scheduling problem. When the rivet is used for connecting a plurality of parts with through holes, the guide part, the second press riveting section and the first press riveting section sequentially pass through the through holes from front to back, the diameter of the guide part is smaller than that of the through holes, the guide part is in clearance fit with the parts, the guide part has a guide effect, and the rivet rod is easily guided into the through holes by the guide part; the diameter of the second press riveting section is slightly larger than that of the through hole, the second press riveting section is in interference fit with the part with a small interference, the second press riveting section can correct the deflection of the center of the rivet to improve the concentricity of the rivet and the through hole of the part, and the first press riveting section is matched with the part with enough interference to enable the parts to be tightly connected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of a rivet according to an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
fig. 4 is an enlarged view of a portion a of fig. 3.
The reference numbers illustrate:
the realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The embodiment of the present invention provides a rivet 100 for connecting a plurality of parts having through holes.
Referring to fig. 1 and 2, in an embodiment of the present invention, the rivet 100 has a rivet head 10 and a rivet stem 30, the rivet head 10 is in an oblate column shape, the rivet head 10 is coaxially connected to the rivet stem 30, the rivet stem 30 includes a guiding portion 31 and a rivet pressing portion 33, the guiding portion 31 is located at an end of the rivet stem 30 away from the rivet head 10, the guiding portion 31 is connected to the rivet head 10 through the rivet pressing portion 33, and the guiding portion 31 is in clearance fit with the part; the press-riveting portion 33 is located between the guide portion 31 and the rivet head 10, the press-riveting portion 33 includes a first press-riveting section 331 and a second press-riveting section 333 which are connected, the first press-riveting section 331 is connected with the rivet head 10, and the second press-riveting section 333 is connected with the guide portion 31; the first rivet pressing section 331 and the second rivet pressing section 333 are used for being in interference fit with the part, and the diameter of the first rivet pressing section 331 is larger than that of the second rivet pressing section 333.
When the rivet 100 is used for connecting a plurality of parts with through holes, the guide part 31 of the rivet 100 is an insertion end, and the guide part 31, the second rivet pressing section 333 and the first rivet pressing section 331 sequentially pass through the through holes from front to back; the diameter of the guide part 31 is smaller than that of the through hole, the guide part 31 inserts the rivet rod 30 into the through hole with initial ease, when the guide part 31 is matched with the through hole, the rivet 100 is also in clearance fit with the through hole, the guide part 31 plays a role of initial positioning, and the deflection of the rivet 100 is controlled within a certain range by the guide part 31; continuing to insert the rivet rod 30 into the through hole, inserting the second rivet pressing section 333 into the through hole, wherein the diameter of the second rivet pressing section 333 is very close to that of the through hole, the second rivet pressing section 333 is in interference fit with the through hole with a very small interference, the second rivet pressing section 333 corrects the axis of the rivet pin to be basically coincident with the axis of the through hole, at this time, the rivet 100 is basically coincident with the axis of the through hole but not tightly fitted, and parts are easy to loosen or separate; the rivet rod 30 is continuously inserted into the through hole, the first rivet pressing section 331 further reduces the deflection of the rivet 100, so that the stress on each part of the first rivet pressing section 331 is uniform, at this time, the first rivet pressing section 331 is in interference fit with the through hole with enough interference, the rivet 100 is in close fit with the part, and the rivet 100 tightly connects a plurality of parts. The utility model discloses a rivet 100 has avoided the pressure to rivet the in-process and has appeared pressing the emergence of riveting crooked, unable pressure and hole deformation scheduling problem.
Referring to fig. 3 and 4, on the basis of the above embodiment, in another embodiment, the guide portion 31 includes a first guide section 311 and a second guide section 313, the second guide section 313 is located between the first guide section 311 and the second clinch section 333, the diameter of the second guide section 313 is larger than that of the first guide section 311, the second guide section 313 and the first guide section 311 are both in clearance fit with the through hole, and the amount of clearance between the second guide section 313 and the through hole is smaller than that between the first guide section 311 and the through hole.
The diameters of the first guide section 311, the second guide section 313, the second rivet pressing section 333, and the first rivet pressing section 331 are gradually increased. When the rivet 100 is used to connect a plurality of parts having through holes, the first guide section 311, the second guide section 313, the second rivet pressing section 333 and the first rivet pressing section 331 are sequentially inserted into the through holes, and the first guide section 311 plays a role of preliminary positioning to control the deflection of the rivet rod 30 within a certain range; the diameter of the second guide section 313 is very close to the hole diameter of the through hole, the second guide section 313 further reduces the deflection amount of the rivet rod 30, the concentricity of the rivet rod 30 and the through hole is further improved by the second guide section 313, and the position of the rivet 100 is more effectively corrected by further pressing the second riveting section 333 into the through hole under a smaller deflection amount, so that the condition of lower correction force caused by an excessively large deflection amount is avoided.
The first guide section 311, the second guide section 313, the second rivet pressing section 333, and the first rivet pressing section 331 may be cylindrical or conical, which is generally easier to reduce the amount of deflection but slightly less guiding than a cone. In an embodiment, one end of the first guiding section 311, which is far away from the rivet head, is a tapered structure, one end of the first guiding section 311, which is close to the rivet head, is cylindrical, the second guiding section 313, the second rivet pressing section 333 and the first rivet pressing section 331 are cylindrical, the tapered structure of the first guiding section 311 has a guiding function, so that the rivet rod 30 is easily inserted into the through hole, the cylindrical structure of the first guiding section 311, the second guiding section 313 and the second rivet pressing section 333 reduce the deflection of the rivet 100 to be very small, and the cylindrical structure of the first rivet pressing section 331 is more favorable for preventing the phenomenon of rivet pressing deflection.
Referring to fig. 1 and fig. 2, further, a chip groove 35 is concavely formed in the surface of the first riveting section 331 and/or the second riveting section 333, the chip groove 35 is of a strip-shaped structure, the chip groove 35 may be a straight strip or a curved strip, and the chip groove 35 is used for discharging chips on the wall of the through hole during the riveting process. The chip groove 35 by first section 331 of riveting is close to the one end of rivet head 10 extends to the second section 333 of riveting is close to the one end of second direction section 313, perhaps, chip groove 35 by first section 331 of riveting is close to the one end of rivet head 10 extends to second direction section 313 is close to the one end of first direction section 311, perhaps, chip groove 35 by second section 333 of riveting is close to the one end of first section 331 of riveting extends to second direction section 313 is close to the one end of first direction section 311, or again, chip groove 35 by second section 333 of riveting is close to the one end of first section 331 of riveting extends to the second section 333 of riveting is close to the one end of second direction section 313. Preferably, the chip discharge groove 35 extends from the end of the second rivet pressing section 333 close to the first rivet pressing section 331 to the end of the second guide section 313 close to the first guide section 311, so as to prevent the chip discharge from being unclean.
During the clinching process, the part may generate a portion of debris, which may be accumulated so that the rivet 100 cannot be pressed into the through hole, and the debris generated is discharged through the flutes 35, thereby preventing the occurrence of the above-mentioned situation. In the riveting process, the scraps generated by riveting will enter the scrap discharge groove 35, the scrap discharge groove 35 is close to one end of the first guide-in section for discharge, and a larger gap is reserved between the first guide-in section and the hole wall of the through hole for completely discharging the scraps.
Referring to fig. 1, in an embodiment, the chip flutes 35 have a plurality of straight strips, the chip flutes 35 are disposed around a central axis of the rivet rod 30, and a distance between two adjacent chip flutes 35 is consistent. The uniform arrangement of the chip grooves 35 is beneficial to uniformly discharging chips on the peripheral wall of the rivet rod 30, and the phenomenon that the axis of the rivet rod 30 deviates due to the extrusion of part of the chips discharged by part of the chips is avoided.
Additionally, the first rivet pressing section 331 is connected to the second rivet pressing section 333 in a smooth manner, and/or the second rivet pressing section 333 is connected to the second guide section 313 in a smooth manner. The smooth connection allows the rivet bar 30 to be pressed in more easily than a right-angle connection.
The first rivet pressing section 331 and the rivet head 10 are arranged at an interval, and the first rivet pressing section 331 and the rivet head 10 are connected through a buffer portion 50. Due to the fact that the concentricity of the rivet 100 and the through hole cannot be guaranteed to be 100% in the press riveting process, or due to errors in the manufacturing process of the through hole or the rivet 100, when the press riveting is completed, the end face, close to the rivet head 10, of the first press riveting section 331 may not be flush with the hole opening of the through hole, and the situation that the rivet cannot be completely pressed in is caused. The buffer portion 50 prevents the situation that the rivet cannot be completely pressed due to the above reasons, improves the utilization rate of the first rivet pressing section 331, and further improves the rivet pressing force.
The utility model provides a rivet 100 still, rivet 100 has rivet head 10 and riveting pole 30, rivet head 10 with riveting pole 30 coaxial coupling, riveting pole 30 is including pressing riveting portion 33 and guiding portion 31, pressing riveting portion 33 with rivet head 10 is connected, pressing riveting portion 33 with interference fit between the part, guiding portion 31 includes first direction section 311 and second direction section 313, second direction section 313 with pressing riveting portion 33 is connected, first direction section 311 passes through second direction section 313 with pressing riveting portion 33 connects, the diameter of first direction section 311 is less than the diameter of second direction section 313, first direction section 311 with second direction section 313 all with part clearance fit, first direction section 311 with clearance volume between the part is greater than second direction section 313 with clearance volume between the part.
When the rivet 100 is used to connect a plurality of parts having through holes, the first guide section 311, the second guide section 313 and the first rivet pressing section 331 are sequentially inserted into the through holes, and the first guide section 311 plays a role of preliminary positioning to control the deflection of the rivet rod 30 within a certain range; the diameter of second guide section 313 with fenestrate aperture is very close, second guide section 313 with clearance volume between the part is very little, second guide section 313 has further reduced the skew volume of riveting pole 30, second guide section 313 will riveting pole 30 with fenestrate concentricity further improves, under very little skew volume, further will first section 331 is riveted impresses make in the perforation first section 331 is riveted with perforation interference fit, the utility model discloses technical scheme has avoided the pressure to rivet skew, can't step in and the condition of hole deformation takes place.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the inventive concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (9)
1. A rivet for connecting a plurality of parts having a through-hole, the rivet having a rivet head and a rivet stem, the rivet head being coaxially connected to the rivet stem, the rivet stem comprising:
the guide part is positioned at one end of the rivet rod, which is far away from the rivet head;
the press riveting part is positioned between the guide part and the rivet head and comprises a first press riveting section and a second press riveting section which are connected, the first press riveting section is connected with the rivet head, and the second press riveting section is connected with the guide part;
the guide part with clearance fit between the part, first pressure rivet section with the second pressure rivet section all with interference fit between the part, wherein, the diameter of first pressure rivet section is greater than the diameter of second pressure rivet section.
2. The rivet according to claim 1, wherein the guide portion includes a first guide section and a second guide section, the second guide section being located between the first guide section and the second clinching section, the second guide section having a larger diameter than the first guide section.
3. The rivet according to claim 2, characterized in that the surface of the first riveting section and/or the second riveting section is provided with chip grooves in a concave manner.
4. A rivet according to claim 3, wherein said flutes extend in the axial direction of said shank.
5. A rivet according to claim 3, wherein the flutes extend from the end of the first clinching segment adjacent the rivet head to the end of the second guide segment adjacent the first guide segment.
6. A rivet according to claim 3, wherein said flutes are plural and are equispaced about a central axis of said shank.
7. A rivet according to claim 6, wherein the spacing between adjacent flutes is uniform.
8. The rivet according to claim 1, wherein the first clinch segment is joined smoothly with the second clinch segment;
and/or the second rivet pressing section is smoothly connected with the guide part.
9. A rivet according to any one of claims 1 to 8, characterized in that a gap is left between the first clinching segment and the rivet head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220912244.7U CN218718038U (en) | 2022-04-19 | 2022-04-19 | Rivet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220912244.7U CN218718038U (en) | 2022-04-19 | 2022-04-19 | Rivet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218718038U true CN218718038U (en) | 2023-03-24 |
Family
ID=85581510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220912244.7U Active CN218718038U (en) | 2022-04-19 | 2022-04-19 | Rivet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218718038U (en) |
-
2022
- 2022-04-19 CN CN202220912244.7U patent/CN218718038U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |