CN212055431U - Multi-groove single-side ring groove fastener - Google Patents
Multi-groove single-side ring groove fastener Download PDFInfo
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- CN212055431U CN212055431U CN202020547205.2U CN202020547205U CN212055431U CN 212055431 U CN212055431 U CN 212055431U CN 202020547205 U CN202020547205 U CN 202020547205U CN 212055431 U CN212055431 U CN 212055431U
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- 230000007704 transition Effects 0.000 claims abstract description 44
- 238000009434 installation Methods 0.000 abstract description 9
- 238000011900 installation process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 208000002193 Pain Diseases 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
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Abstract
The utility model discloses a multislot single face annular fastener. The rivet is sequentially composed of a rivet head, a polished rod, a locking groove, a ring groove transition section and a tail pull groove, and the lantern ring is composed of a sleeve and a rail; the rivet tail structure is provided with a plurality of tail pull grooves which are arranged in parallel along the axial direction of the rivet. The fastener structure is researched and innovatively designed, particularly, fillet transition between the locking groove and the tail pull groove and among the tail pull grooves is designed, the tail pull grooves are arranged at a certain distance in parallel, the structure can avoid the phenomenon of stress concentration in the installation process to damage the rivet, can decompose the tensile force applied to the rivet by an installation tool in the installation process, and reduces the local stress of the rivet; the straight portion of afterbody can make things convenient for mounting tool to install, further protects rivet and mounting tool, increases its life.
Description
Technical Field
The utility model belongs to the technical field of the riveting, especially, belong to a design and manufacturing that is used for the multislot single face rivet riveting fastener of blind hole connection, belong to metal machining's riveting class (B21J) and fastener class (F16B).
Background
When the double-sided riveted blind rivet is installed, the rivet is inserted into the installation hole from the front side of the connected piece, the lantern ring is sleeved on the periphery of the rivet from the rear side, the head of the lantern ring is arranged in front, and the lantern ring cylinder is arranged in the rear; and the riveting device arranged at the rear sides of the two connected pieces clamps the pull groove section at the tail part of the rivet to perform pull riveting. After riveting, the lantern ring cylinder is deformed and then radially pressed on the periphery of the ring groove section of the rivet, and the head of the lantern ring is axially pressed on the surface of the connected piece at the rear side, so that the two connected pieces are fastened. However, the premise of double-sided riveting is that enough space is required on both sides of the object to be riveted. In actual work, especially in the assembling process, only one side of an object has enough space, the space of the other side is very limited, and even a connecting bolt cannot be placed into the object, such as the fastening piece connection of a blind hole. Therefore, it is often applied to a single-deformed connecting blind rivet.
Conventional single face warp and connects rivet fastener accomplishes rivet stem and lantern ring equipment before using, only need insert the mounting hole from connecting piece one side when the equipment back installation, then after stinging the single face connection product afterbody through the jack catch in the riveter, drive the rivet and outwards move, extrude the lantern ring, lantern ring pipe portion bulging deformation forms annular protruding blind rivet head, further the sleeve extrudes the lantern ring and takes place plastic deformation, presss from both sides tightly by the riveting piece and breaks outer rivet stem, accomplishes the riveting.
Aiming at single-side riveting, because the blind hole or the structure which is not easy to enter is subjected to single-side riveting, the performance requirements on the lantern ring are different, and higher requirements are provided for the structural performance of the rivet.
In the prior art, bolts, single-groove short-tail ring groove rivets and single-side ring groove rivets of a breaking type are generally used for fastening and connecting clamped parts.
When the single-groove short-tail ring groove rivet is adopted for fastening connection, the two sides of the clamped part need to be pre-installed, the blind hole operation is not suitable, and a process hole needs to be formed on the clamped part sometimes to damage the clamped part; when the snap-off type single-sided ring groove rivet is used for fastening and connecting blind holes by a clamping piece, the rivet can generate large plastic deformation in the process of snapping the rivet off, the clamped piece can be damaged, and even the riveted joint which is completely deformed is loosened.
Disclosure of Invention
The utility model discloses a multislot single face annular fastener according to prior art's not enough. The utility model aims at providing a performance is better, need not the multislot single face fastening connection system of breaking.
The utility model discloses a following technical scheme realizes:
many grooves single face annular fastener, including rivet and lantern ring, its characterized in that: the rivet is composed of a rivet head, a polished rod, a locking groove, a ring groove transition section and a tail pull groove in sequence, and the lantern ring is composed of a sleeve and a rail;
the rivet tail structure is provided with a plurality of tail pull grooves which are arranged in parallel along the axial direction of the rivet.
Furthermore, the rivet tail structure is provided with at least three tail pull grooves which are arranged in parallel along the axial direction of the rivet.
The annular groove transition section is arranged between the locking groove and the tail pull groove, the annular groove transition section comprises a straight transition section and an inclined plane transition section, the length of the straight transition section of the annular groove is 0.1-1 times of the length of the locking groove, and an included angle of-75-0 degrees is formed between the bus of the annular groove inclined plane transition section and the axial direction of the rivet; the tooth bottom and the tooth top of each tail pull groove are in a fillet transition structure, and the ratio of the fillet radius of the tooth bottom of the tail pull groove to the fillet radius of the tooth top of the tail pull groove is 1-2.5; the width of each tail pull groove is 0.5-2.5 of the length of the straight transition section of the annular groove; the length of the straight section of the tail pull groove is 0.5-2.5 of the length of the straight transition section of the ring groove.
The straight transition section length of the annular groove is 0.2-0.6 times of the total length of the locking groove, and an included angle of-60 degrees to-25 degrees is formed between a generatrix of the inclined transition section of the annular groove and the axial direction of the rivet.
The ratio of the fillet radius of the tooth bottom of the tail pull groove to the fillet radius of the tooth top of the tail pull groove is 1-2.
The ratio of the width of each tail pull groove to the width of the straight transition section of the annular groove is 1-2.
The ratio of the length of the straight section of the tail broaching groove to the length of the straight transition section of the annular groove is 1-1.5.
Compared with the prior art:
the utility model discloses the fillet transition between locking groove and the afterbody kerve and in the afterbody kerve has been designed in particular to the fastener structure of research and innovative design, and a plurality of afterbody kerves are separated by side and are set up certain distance, and this structure can avoid the stress concentration phenomenon to appear in the installation, makes the rivet damage, can decompose the pulling force that mounting tool applyed the rivet in the installation, and the local atress of rivet reduces; the straight portion of afterbody can make things convenient for mounting tool to install, further protects rivet and mounting tool, increases its life.
The utility model discloses when fastening connection is carried out to clamping piece such as blind hole, because of rivet draw groove and tail tooth structural design, riveting tool is more reliable and more stable when snatching rivet and riveting, can implement lower riveting pulling force and can satisfy the riveting requirement, can make riveting tool miniaturized, lightweight, can effectively avoid the obvious deformation by clamping piece and rivet emergence in the installation, protected clamping piece and rivet, satisfy the operation requirement and prolong the mounting tool life-span simultaneously, the riveting combines more stably, further protect the original structural performance of the clamping piece that is linked, and do not have the installation noise; in the installation process, the situation that the tail part of the rivet flies out to hurt installation personnel when being broken can be avoided, and potential safety hazards are reduced; after the installation is finished, the rust prevention treatment is not required to be carried out again; in the production process, raw materials can be saved, and the production period is shortened.
Drawings
FIG. 1 is a schematic view of the fastener rivet structure of the present invention;
fig. 2 is a schematic view of the fastener collar structure of the present invention;
FIG. 3 is a partially enlarged schematic view of the rivet structure of the present invention;
FIG. 4 is a schematic view of the fastening connection of the present invention in a ready state;
FIG. 5 is a schematic view of the fastener of the present invention in a ready state for riveting with a riveting tool;
FIG. 6 is a schematic view of the fastening and riveting process of the present invention;
fig. 7 is a schematic view of the fastening connection riveting state of the present invention.
In the figure, 1.1 is a head part, 1.2 is a polished rod, 1.3 is a locking groove, 1.4 is a ring groove transition section, 1.5 is a tail pull groove, 2.1 is a sleeve, 2.2 is a rail, and L is1Is the length of the straight transition section of the ring groove, L2Is the width of the tail slot, L3Is the length of the straight section of the tail broaching groove, R1 is the fillet radius of the tooth bottom of the tail broaching groove, and R2 is the fillet radius of the tooth top of the tail broaching groove.
Detailed Description
The present invention will be further described with reference to the following embodiments, which are intended to illustrate the principles of the present invention without limiting the present invention in any way, and the present invention is not beyond the scope of the present invention.
With reference to the attached drawings.
The multi-groove single-side ring groove fastener comprises a rivet and a lantern ring, wherein the rivet is sequentially composed of a rivet head 1.1, a polished rod 1.2, a locking groove 1.3, a ring groove transition section 1.4 and a tail pull groove 1.5, and the lantern ring is composed of a sleeve 2.1 and a rail 2.2;
the utility model discloses set up a plurality of afterbody kerfs 1.5 along rivet axial side by side at rivet afterbody structure. In the figure, three tail pull grooves 1.5 which are parallel are arranged.
The utility model discloses set up annular changeover portion 1.4 between locking groove 1.3 and afterbody trompil 1.5, annular changeover portion 1.4 is including straight changeover portion and inclined plane changeover portion, the straight changeover portion length L of annular1The length of the locking groove is 0.1-1 time, and an included angle of-75-0 degrees is formed between the bus of the inclined plane transition section of the annular groove and the axial direction of the rivet; the tooth bottom and the tooth top of each tail broach groove are in a fillet transition structure, and the ratio of the fillet radius R1 of the tooth bottom of the tail broach groove to the fillet radius R2 of the tooth top of the tail broach groove is 1-2.5; each tail pull groove width L2Is the length L of the straight transition section of the ring groove10.5 to 2.5 of (1); length L of straight section of tail slot3Is the length L of the straight transition section of the ring groove10.5 to 2.5.
Length L of straight transition section of ring groove1The total length of the locking groove is 0.2-0.6 times, and an included angle of-60 degrees to-25 degrees is formed between a bus of the annular groove inclined plane transition section and the axial direction of the rivet. As shown in FIG. 3, the bevel transition section of the ring groove forms a cone structure with the diameter of the connecting end of the straight transition section of the ring groove being larger than that of the connecting end of the ring groove.
The ratio of the fillet radius R1 of the bottom of the tail broach slot to the fillet radius R2 of the top of the tail broach slot is 1-2.
Each tail pull groove width L2Length L of straight transition section of ring groove1The ratio of the ratio is 1 to 2.
Length L of straight section of tail slot3Length L of straight transition section of ring groove1The ratio of the ratio is 1 to 1.5.
The fastener riveting process of the present invention is shown in fig. 4 to 7. The specific installation process is as follows:
(1) as shown in fig. 4, the rivet and collar are threaded through the clamped piece in the manner shown, ready for riveting;
(2) using a special riveting tool, the rivet is extended into the riveting tool, engaging the tail broach 1.5 with the jaws in the riveting tool, as shown in fig. 5;
(3) as shown in fig. 6, the switch of the riveting tool is started, so that the tail pull groove 1.5 of the jaw dragging ring in the riveting tool and the anvil move relatively, an axial force is applied to the rivet, and the anvil slightly presses the riser 2.2 of the sleeve ring;
(4) as shown in fig. 7, under the action of the axial force, the lantern ring sleeve 2.1 begins to deform on the outer side of the clamped part, the anvil continues to squeeze the rail 2.2 part of the lantern ring, when the lantern ring deforms completely on both sides of the clamped part, the anvil starts to move in the opposite direction, and after the lantern ring deforms completely on both sides of the clamped part, the riveting process is completed.
Claims (7)
1. The utility model provides a multislot list annular fastener, includes rivet and lantern ring, its characterized in that: the rivet is composed of a rivet head, a polished rod, a locking groove, a ring groove transition section and a tail pull groove in sequence, and the lantern ring is composed of a sleeve and a rail; the rivet tail structure is provided with a plurality of tail pull grooves which are arranged in parallel along the axial direction of the rivet.
2. The multi-groove, blind, pocket fastener of claim 1 wherein: the rivet tail structure is provided with at least three tail pull grooves which are arranged in parallel along the axial direction of the rivet.
3. The multi-groove, blind-pocket fastener of claim 1 or 2, wherein: an annular groove transition section is arranged between the locking groove and the tail pull groove, the annular groove transition section comprises a straight transition section and an inclined plane transition section, the length of the straight transition section of the annular groove is 0.1-1 time of the length of the locking groove, and an included angle of-75-0 degrees is formed between a bus of the inclined plane transition section of the annular groove and the axial direction of the rivet; the tooth bottom and the tooth top of each tail pull groove are in a fillet transition structure, and the ratio of the fillet radius of the tooth bottom of the tail pull groove to the fillet radius of the tooth top of the tail pull groove is 1-2.5; the width of each tail pull groove is 0.5-2.5 of the length of the straight transition section of the annular groove; the length of the straight section of the tail pull groove is 0.5-2.5 of the length of the straight transition section of the ring groove.
4. The multi-groove, blind, pocket fastener of claim 3 wherein: the straight transition section length of the annular groove is 0.2-0.6 times of the length of each locking groove, and an included angle of-60 degrees to-25 degrees is formed between a generatrix of the inclined transition section of the annular groove and the axial direction of the rivet.
5. The multi-groove, blind, pocket fastener of claim 3 wherein: the ratio of the fillet radius of the tooth bottom of the tail pull groove to the fillet radius of the tooth top of the tail pull groove is 1-2.
6. The multi-groove, blind, pocket fastener of claim 3 wherein: the ratio of the width of each tail pull groove to the width of the straight transition section of the annular groove is 1-2.
7. The multi-groove, blind, pocket fastener of claim 3 wherein: the ratio of the length of the straight section of the tail broaching groove to the length of the straight transition section of the annular groove is 1-1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020547205.2U CN212055431U (en) | 2020-04-14 | 2020-04-14 | Multi-groove single-side ring groove fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020547205.2U CN212055431U (en) | 2020-04-14 | 2020-04-14 | Multi-groove single-side ring groove fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212055431U true CN212055431U (en) | 2020-12-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020547205.2U Withdrawn - After Issue CN212055431U (en) | 2020-04-14 | 2020-04-14 | Multi-groove single-side ring groove fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212055431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396429A (en) * | 2020-04-14 | 2020-07-10 | 眉山中车紧固件科技有限公司 | Multi-groove single-side ring groove fastener and mounting method thereof |
-
2020
- 2020-04-14 CN CN202020547205.2U patent/CN212055431U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396429A (en) * | 2020-04-14 | 2020-07-10 | 眉山中车紧固件科技有限公司 | Multi-groove single-side ring groove fastener and mounting method thereof |
| CN111396429B (en) * | 2020-04-14 | 2024-04-16 | 眉山中车紧固件科技有限公司 | Multi-groove blind ring groove fastener and installation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201201 Effective date of abandoning: 20240416 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20201201 Effective date of abandoning: 20240416 |