CN207526842U - A kind of screw-type self-plugging rivet - Google Patents
A kind of screw-type self-plugging rivet Download PDFInfo
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- CN207526842U CN207526842U CN201721372330.9U CN201721372330U CN207526842U CN 207526842 U CN207526842 U CN 207526842U CN 201721372330 U CN201721372330 U CN 201721372330U CN 207526842 U CN207526842 U CN 207526842U
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Abstract
The utility model discloses a kind of screw-type self-plugging rivet, being sequentially sleeved at including core bar of the end with limited cap, by limited cap side ing on core bar deformable sleeve, rivet nut and can drive nut；Wherein rivet nut and driving nut with core bar thread fitting；With cut-off neck slot on the core bar, the side of the cut-off neck slot is the riveting segment with the limited cap, and opposite side is the drive section twisted off after installing, and the limiting stand with rivet nut matching ends is equipped on the outer wall of riveting segment；Core bar is rotated relative to driving nut to limiting condition, and limiting stand pushes against rivet nut both ends so that core bar to be promoted to be twisted off at cut-off neck slot with driving nut.Screw-type self-plugging rivet provided by the utility model disclosure satisfy that degree of the flushing requirement of riveting, ensure the reliability of riveting, and riveting failure risk is down to zero.
Description
Technical field
The utility model is related to technical field of fastening, and in particular to a kind of screw-type self-plugging rivet.
Background technology
At present, aircraft manufacturing in the world is largely using advanced composite material (ACM), but because composite material can be with aluminium and steel
Etc. materials fastener being in contact property electrochemical corrosion, major aircraft factory is increasingly prone to using specific strength is high, corrosion resistant
The fastener of the titanium or titanium alloy material of erosion.For the connection and repair at the not open position of aircraft, generally use is easy for installation
The self-plugging rivet of blind riveting.Titanium alloy core pulling bolt combines titanium alloy material and the advantage of blind riveting, also has connection
The features such as intensity is big, reliability is high, light-weight and easy to operate, development potentiality is huge, and market development prospect is very good.
Authorization Notice No. be the patent of invention document of CN103291719A disclose a kind of easy to operate, fracture size it is small and
The screw thread core pulling rivet of polishing core bar fracture is not required to, the core bar bar diameter in the rivet is full thread, and one end is T shape cylinder knots
Structure is equipped with cut-off neck slot at the middle part of core bar, and two sections of Major Diams of cut-off neck slot both sides are inconsistent, are more than by head end Major Diam
By threads major diameter.Driving nut can only coordinate with core bar threads, when head major thread end advances to driving nut,
, just cannot further along because thread fitting degree is poor, core bar flushes fracture at cut-off neck slot, to ensure that the rivet fracture after installing is put down
It is whole.This rivet can form the major diameter bulge of " big base angle " shape after mounting, achieve the effect that riveting pre-tightens.
In actual use, the driving nut of above-mentioned screw thread core pulling rivet and the thread fitting difference of core bar are only that
Major diameter is different, and during riveting, under powerful torque effect, core bar will appear the phenomenon that being squeezed into driving nut by force, cause
Riveting failure, is unable to reach the requirement of riveting degree of flushing, and riveting process is irreversible, once there is riveting failure, can cause
Whole knot component is scrapped, and therefore, there are potential application risks for the screw thread core pulling rivet of this structure design.
Utility model content
The utility model provides a kind of screw-type self-plugging rivet, disclosure satisfy that degree of the flushing requirement of riveting, ensures riveting
Reliability, will riveting failure risk be down to zero.
A kind of screw-type self-plugging rivet is sequentially sleeved at including core bar of the end with limited cap, by limited cap side
On core bar can deformable sleeve, rivet nut and driving nut；Wherein rivet nut and driving nut with core bar thread fitting；The core bar
Upper to carry cut-off neck slot, the side of the cut-off neck slot is the riveting segment with the limited cap, and opposite side is the driving twisted off after installing
Section is equipped with the limiting stand with rivet nut matching ends on the outer wall of riveting segment；Core bar is rotated relative to driving nut to the limit
Under state, limiting stand pushes against rivet nut both ends so that core bar to be promoted to be twisted off at cut-off neck slot with driving nut.
During riveting, keep driving nut and rivet nut motionless, rotate core bar, it is axial along core bar with the rivet nut of core bar thread fitting
Movement, and squeeze can deformable sleeve deform upon, when rivet nut is against limiting stand, rivet nut axial movement be obstructed, continue rotary core
During bar, core bar twists off at cut-off neck slot.
In the utility model, by offseting come the extreme sport position for limiting rivet nut along core bar axial direction for rivet nut and limiting stand
It puts, when rivet nut moves to extreme position, driving nut pushes against the both ends of rivet nut with limiting stand cooperation, promotes core bar in cut-off neck slot
Place twists off.
The limiting stand is used to determine the extreme sport position of rivet nut, and the shape of limiting stand is without specifically limited.
The cut-off neck slot provides stress concentration point, and the shape of cut-off neck slot is not particularly limited, but need to ensure that core bar breaks after twisting off
Face is concordant.
The rivet nut use high strength titanium alloy, core bar use precipitation-hardening corrosionproof heatproof steel, both ensured rivet with it is compound
Material is not in contact corrosion directly, while ensures to meet mechanical property requirements.
Thread fitting between the rivet nut and core bar ensures that the self-plugging rivet after the completion of riveting has good pretightning force etc.
Mechanical property.
Preferably, the riveting segment uses identical screw thread specification with drive section.
Screw thread specification is identical, and extrusion forming of teeth scrubbing plate may be used, and reduces difficulty of processing.
Preferably, the limiting stand is set adjacent to limited cap.It is described that filler can be nested between deformable sleeve and core bar
Ring.The packing ring use plastic material, can deformable sleeve deformation when, filler ring filling can be between deformable sleeve and core bar
Gap.
Preferably, it is described can one end and the limited cap of deformable sleeve offset cooperation, the other end with and riveting part phase
The deformation section supported.
In riveting process, during rivet nut is relative to core bar movement, limited cap can deformable sleeve with riveting part extruding
It deforms upon, bulge is formed in riveting part corresponding side.
Preferably, the inner wall of the deformation section is equipped with storage tank, the packing ring is located in the storage tank.
Preferably, the one end of the rivet nut far from limited cap be equipped with blocking head, it is described blocking head with can deformable sleeve phase
Mutually cooperation is pushed against the both sides of riveting part, and circumferentially limiting coordinates between the blocking head and driving nut.
Circumferentially limiting coordinates between the blocking head and driving nut, i.e., does not occur between blocking head and driving nut opposite
Rotation drives nut not rotate, rivet nut is kept not rotate indirectly by holding, during so as to rotate core bar, opposite rivet nut generation
Axial relative movement.
Preferably, on contact site of the blocking head with driving both nuts, at least one is equipped with to circumferential limit
The anti-slop serrations of position.The relative rotation of driving nut and rivet nut is prevented by anti-slop serrations.
Preferably, the blocking head is flaring structure, one end of the driving nut axial direction is equipped with and the flaring structure
The matched tapered portion of inner wall.
After the completion of riveting, the flaring structure of the blocking head pushes against the side of riveting part, the taper of the driving nut
Portion is stretched into inside flaring structure.The anti-slop serrations are arranged in tapered portion.
Preferably, rivet nut offsets with limiting stand under state, the one end of rivet nut far from limiting stand and cut-off neck slot flush with each other.
To ensure that the section that core bar is formed after being broken at cut-off neck slot is concordant with the corresponding end surface of rivet nut.
The utility model compared with prior art, has the following advantages：
(1) rivet nut use high strength titanium alloy, core bar use precipitation-hardening corrosionproof heatproof steel, both ensure that rivet with it is compound
Storeroom will not be in contact corrosion, also can guarantee that mechanical property is met the requirements；
(2) thread fitting between rivet nut and core bar ensures that the self-plugging rivet after installation has the mechanical property such as good pretightning force
Energy.
(3) the screw thread specification at core bar cut-off neck slot both ends is identical, can greatly reduce processing by extrusion forming of teeth scrubbing plate
Difficulty；
(4) pass through the interference of the position-limiting action of limiting stand, driving nut and core bar screw thread, it is ensured that the core bar after installation is neat
Flat fracture, without secondary polishing；
(5) driving nut repeats utilization, reduces cost.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model screw-type self-plugging rivet；
Fig. 2 is the schematic diagram of core bar in the utility model screw-type self-plugging rivet；
Fig. 3 is the schematic diagram of rivet nut in the utility model screw-type self-plugging rivet；
Fig. 4 is the schematic diagram that rivet nut offsets with the limiting stand on core bar in the utility model screw-type self-plugging rivet；
Fig. 5 is the B portions enlarged drawing in Fig. 4；
Fig. 6 is the schematic diagram after the completion of the riveting of the utility model screw-type self-plugging rivet.
In figure：1st, core bar；1a, limited cap；1b, drive section；1c, limiting stand；1d, cut-off neck slot；It 2nd, can deformable sleeve；3rd, it follows closely
Body；3a, divided edge structure；3b, blocking head；4th, nut is driven；4a, anti-slop serrations；5th, packing ring；6th, riveting part.
Specific embodiment
Below in conjunction with the accompanying drawings, the utility model screw-type self-plugging rivet is described in detail.
As shown in Figure 1, screw-type self-plugging rivet, including：End carries the core bar 1 of limited cap 1a, by limited cap 1a sides
Rise be sequentially sleeved on core bar 1 can deformable sleeve 2, rivet nut 3 and driving nut 4 and be nested in can deformable sleeve 2 and core bar
Packing ring 5 between 1.
As shown in Fig. 2, with cut-off neck slot 1d on core bar 1, the side of cut-off neck slot 1d is the riveting segment (riveting with limited cap 1a
Segment length is connect as L1), opposite side is the drive section 1b (drive section 1b length is L2) twisted off after installing, on the outer wall of riveting segment
It is set equipped with the limiting stand 1c with 3 matching ends of rivet nut, limiting stand 1c adjacent to limited cap 1a.
As shown in Fig. 2, cut-off neck slot 1d both ends are equipped with external screw thread, and two sections of external screw thread specifications are identical.Rivet nut 3 and driving spiral shell
Mother 4 with 1 thread fitting of core bar.
As shown in figure 3, rivet nut 3 is hollow structure, 3 inner wall of rivet nut is equipped with the screw thread to match with 1 external screw thread of core bar, rivet nut
3 one end is equipped with blocking head 3b, and the other end of rivet nut 3 is equipped with guiding can the divided edge structure 3a that moves of deformable sleeve 2.
Stop that the shape of head 3b is unlimited, the common plush copper of self-plugging rivet, 100 ° of countersunk heads and 130 ° of countersunk heads may be used (as schemed
Shown in 3) etc..
As shown in Figure 1, Figure 3, blocking head 3b is 130 ° of countersunk heads with flaring structure, and 4 axial one end of driving nut is set
Have and be equipped with anti-slop serrations 4a with the matched tapered portion of flaring structure inner wall, tapered portion, anti-slop serrations 4a is axial along driving nut 4
The annular knurl line for extending and being uniformly distributed circumferentially realizes that circumferentially limiting is matched between blocking head 3b and driving nut 4 by annular knurl line
It closes, that is, prevent rivet nut 3 and drives the relative rotation between nut 4.
As shown in Figure 1, can one end and the limited cap 1a of deformable sleeve 2 offset cooperation, the other end with and 6 phase of riveting part
The deformation section supported.Such as the A portions enlarged drawing in Fig. 1, the inner wall of deformation section is equipped with storage tank, and packing ring 5 is located in storage tank.
As shown in fig. 6, rivet nut 3 and limiting stand 1c offsets under state, the one end of rivet nut 3 far from limiting stand 1c and cut-off neck slot 1d
Flush with each other.
During riveting, self-plugging rivet is run through into riveting part 6, bites core bar 1 using riveting gun pull head, and core bar 1 is driven to rotate,
It keeps driving nut 4 motionless, rivet nut 3 also remains stationary as under the limiting of driving nut 4, and core bar 1 rotates, the limited cap of core bar 1
1a moves closer to rivet nut 3, limited cap 1a and riveting part 6 squeeze can deformable sleeve 2 deform upon, as shown in Figure 4, Figure 5, work as core
Limiting stand 1c on bar 1 against rivet nut 3 end when, limiting stand 1c pushes against 3 both ends of rivet nut, the no longer phase of core bar 1 with driving nut 4
Rivet nut 3 is moved axially, stress concentration twists off at cut-off neck slot 1d, and installation is complete.
As shown in fig. 6, after installation is complete, blocking head 3b with can the mutual cooperation of deformable sleeve 2 be pushed against the two of riveting part 6
Side.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying carries out appropriate change and modification.The utility model is not limited to specific embodiment disclosed and described above,
Some modifications and changes of the utility model should also be as falling into the scope of the claims of the utility model.In addition,
Although having used some specific terms in this specification, these terms are not merely for convenience of description, new to this practicality
Type forms any restrictions.
Claims (10)
1. a kind of screw-type self-plugging rivet is sequentially sleeved at core including core bar of the end with limited cap, by limited cap side
On bar can deformable sleeve, rivet nut and driving nut；Wherein rivet nut and driving nut with core bar thread fitting；On the core bar
With cut-off neck slot, the side of the cut-off neck slot is the riveting segment with the limited cap, and opposite side is the drive section twisted off after installing,
It is characterized in that, the limiting stand with rivet nut matching ends is equipped on the outer wall of riveting segment；Core bar is relative to driving nut rotation
It goes under limiting condition, limiting stand pushes against rivet nut both ends so that core bar to be promoted to be twisted off at cut-off neck slot with driving nut.
2. screw-type self-plugging rivet as described in claim 1, which is characterized in that the riveting segment is with drive section using identical
Screw thread specification.
3. screw-type self-plugging rivet as described in claim 1, which is characterized in that the limiting stand is set adjacent to limited cap.
4. screw-type self-plugging rivet as described in claim 1, which is characterized in that it is described can be nested between deformable sleeve and core bar
There is packing ring.
5. screw-type self-plugging rivet as claimed in claim 4, which is characterized in that it is described can deformable sleeve one end and limited cap
Offset cooperation, and the other end has the deformation section to offset with riveting part.
6. screw-type self-plugging rivet as claimed in claim 5, which is characterized in that the inner wall of the deformation section is equipped with storage tank,
The packing ring is located in the storage tank.
7. screw-type self-plugging rivet as described in claim 1, which is characterized in that the one end of the rivet nut far from limited cap is equipped with
Stop head, the blocking head with can deformable sleeve mutual cooperation be pushed against the both sides of riveting part, the blocking head and driving spiral shell
Circumferentially limiting cooperation between mother.
8. screw-type self-plugging rivet as claimed in claim 7, which is characterized in that the blocking head is with driving connecing for both nuts
On contact portion position, at least one is equipped with the anti-slop serrations circumferentially to limit.
9. screw-type self-plugging rivet as claimed in claim 7, which is characterized in that described to stop head for flaring structure, the drive
One end of dynamic nut axial direction is equipped with and the matched tapered portion of flaring structure inner wall.
10. screw-type self-plugging rivet as described in claim 1, which is characterized in that rivet nut offsets with limiting stand under state, rivet nut
One end and cut-off neck slot flush with each other far from limiting stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721372330.9U CN207526842U (en) | 2017-10-23 | 2017-10-23 | A kind of screw-type self-plugging rivet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721372330.9U CN207526842U (en) | 2017-10-23 | 2017-10-23 | A kind of screw-type self-plugging rivet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207526842U true CN207526842U (en) | 2018-06-22 |
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ID=62570741
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721372330.9U Active CN207526842U (en) | 2017-10-23 | 2017-10-23 | A kind of screw-type self-plugging rivet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207526842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916773A (en) * | 2021-01-23 | 2021-06-08 | 上海奥达科股份有限公司 | Manufacturing method of composite tooth shape of blind rivet |
-
2017
- 2017-10-23 CN CN201721372330.9U patent/CN207526842U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916773A (en) * | 2021-01-23 | 2021-06-08 | 上海奥达科股份有限公司 | Manufacturing method of composite tooth shape of blind rivet |
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200102 Address after: 201712 No. 555 Tian Ying Road, Qingpu Industrial Park, Qingpu District, Shanghai Patentee after: Ritai (Shanghai) Automobile Standard Parts Co., Ltd. Address before: No. 277, Qianjin Road, Qianjin Street, Xiaoshan District, Hangzhou, Zhejiang Province Patentee before: Zhejiang Xizi Aerospace Fastener Co., Ltd. |