CN207526847U - A kind of blind riveting bolt - Google Patents
A kind of blind riveting bolt Download PDFInfo
- Publication number
- CN207526847U CN207526847U CN201721371719.1U CN201721371719U CN207526847U CN 207526847 U CN207526847 U CN 207526847U CN 201721371719 U CN201721371719 U CN 201721371719U CN 207526847 U CN207526847 U CN 207526847U
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- China
- Prior art keywords
- riveting
- rivet body
- core bar
- casing
- limited cap
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Abstract
The utility model discloses a kind of blind riveting bolt, including carrying the core bar of limited cap, the casing being threadably mounted on core bar and being set in rivet body on core bar and between limited cap and casing；Described rivet body one end is equipped with the blocking head for the cooperation that offsets with limited cap, the other end and sleeve circumferential location fit；During riveting, core bar is rotated relative to rivet body, and casing is hampered by riveting part and deformation, and deformation position and the blocking head are against the both sides of riveting part.Blind riveting bolt provided by the utility model, simple for structure, assembling is simple, under the premise of every mechanical performance index is ensured, greatly reduces difficulty of processing and manufacture cost.
Description
Technical field
The utility model is related to technical field of fastening, and in particular to a kind of blind riveting bolt.
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. is that the patent of invention document of CN103291719A discloses a kind of self-plugging rivet, which includes titanium
Alloy rivet nut, core bar, driving nut, tube body and ring, wherein core bar bar diameter are full thread, and one end is T shape cylindrical structures,
The middle part of core bar is equipped with cut-off neck slot, and two sections of Major Diams at cut-off neck slot both ends are inconsistent, is more than by head end Major Diam by tail
Hold Major Diam.The rivet is engaged driving nut in installation process, by riveting gun, and driving core bar is threadingly advanced, and casing is formed
Bulge, last core bar are broken at cut-off neck slot.This rivet can form the major diameter bulge of " big base angle " shape after mounting, reach
Rivet the effect pre-tightened.
Self-plugging rivet disclosed in above patent document has following defect：
(1) component is more, increases the assembly difficulty of design difficulty and product, increases manufacture cost；
(2) rivet nut and driving nut are hollow full inner thread structure, and the two thread size is different, need to use two kinds of screw taps
Processing since titanium alloy has the characteristics such as poor thermal conductivity, low elastic modulus, determines that titanium alloy component tapping difficulty is larger, adds
During the small screw hole of the longer depth of work, screw tap is easily stuck, and fracture, processing cost and difficulty are all high；
(3) to ensure the thread fitting with rivet nut and driving nut, core bar cut-off neck slot both ends Major Diam is inconsistent, for
Polished rod diameter size requirement before rolling screw-threads is very high, and manufacture difficulty is very big.
Utility model content
The utility model provides a kind of blind riveting bolt, simple for structure, and assembling is simple, is ensureing every mechanical property
Under the premise of index, difficulty of processing and manufacture cost are greatly reduced.
A kind of blind riveting bolt, including carrying the core bar of limited cap, the casing being threadably mounted on core bar and being arranged
Rivet body on core bar and between limited cap and casing；
Described rivet body one end is equipped with the blocking head for the cooperation that offsets with limited cap, the other end and sleeve circumferential location fit；
During riveting, core bar is rotated relative to rivet body, and casing is hampered by riveting part and deformation, and deformation position and the resistance
Stopper is against the both sides of riveting part.
One end of the rivet body and sleeve circumferential location fit, i.e., not relative rotation between rivet body and casing, in the circumferential
Keep relative position constant.
It during riveting, keeps rivet body static, rotates core bar, what casing kept under the action of the rivet body in circumferential direction static (covers
Pipe does not rotate), for thread fitting between casing and core bar, during core bar rotates, casing along core bar it is axial by
It walks and is moved to riveting part, under the barrier effect of riveting part, casing deforms upon, after the completion of riveting, the deformations of casing
Position is with stopping head against the both sides of riveting part.
After the completion of riveting, the side of riveting part is against the blocking head of rivet body, and the opposite side of riveting part is against casing
Deformation position, casing and core bar thread fitting with against deformation position is kept not spring back, ensure to have after riveting compared with
High pretightning force, tensile strength and fatigue strength.
The blocking head of the rivet body has the radial dimension of bigger relative to other positions in rivet body axial direction, is covered on rivet
Pipe is stretched into riveted holes at one end, until blocking head offsets with riveting part, is then kept rivet body motionless, is rotated core bar, into
Row riveting operation.
In riveting process and after the completion of riveting, the blocking head of rivet body and the tight caulking part of deformation position retaining clip of casing
The state of part.
In riveting process, the relative position of rivet body and riveting part is constant, i.e. the blocking head holding of rivet body and caulking part
The position relationship that offsets of part, core bar are rotated relative to rivet body, but core bar and rivet body in rivet shaft upwards without relative motion, i.e. core bar
With rivet body in riveting process, in rivet shaft upwards without Relative sliding.
As long as can realize core bar rotation, make casing axial gradually close to riveting part along core bar, to casing and core bar
Between screw thread specification without particular/special requirement.
Preferably, with cut-off neck slot on the core bar, which be the drive section twisted off after installing, opposite side
For riveting segment, the limited cap is located in riveting segment and neighbouring cut-off neck slot, the one end of riveting segment far from limited cap carry with it is described
The matched external screw thread of casing.
The drive section and casing are located at the both sides of cut-off neck slot, in riveting process, apply rotation to core bar by drive section
Power, cut-off neck slot provide stress concentration point, when torsional forces suffered by cut-off neck slot be more than setting disconnected neck power when, core bar is in cut-off neck slot
Place's fracture, drive section are detached from rivet, and riveting segment plays the role of connecting riveting part.
In riveting process, since core bar and rivet body are without axial relative motion, and the blocking head of rivet body remains
With the abutting relation of riveting part, therefore, the relative position of post-rift core bar and rivet body is determined completely by design size, is passed through
Adjust the size of core bar and rivet body, it is ensured that core bar section section corresponding with rivet body is concordant.
The cut-off neck slot need to ensure the fracture that flushes of core bar, and the shape of cut-off neck slot is without particular/special requirement.
Preferably, described sleeve pipe has deformation section towards one end of rivet body, one end of the rivet body towards casing is equipped with
The divided edge structure that deformation section is guided to be axially moved.
The rivet body uses titanium or titanium alloy material, and for hollow structure, and inside is the circular hole of isometrical extension, the rivet body
Peripheral surface towards casing one end is cone, and the vertex of a cone of the cone is located at the end of rivet body, and cone is the slope
Mouth structure, casing gradually move to deform upon against riveting part under the driving of core bar along divided edge structure.
Preferably, it is nested with deformable packing ring between the deformation section and core bar of described sleeve pipe.
The packing ring uses plastic material, and packing ring is squeezed during casing deformation and is also deformed upon, has been riveted
Cheng Hou, the gap between filler ring filling casing and rivet body, the stabilization of holding riveting completion status.
Preferably, on the contact site of both the rivet body and casing, at least one is equipped with prevents to circumferentially positioned
Slip teeth.
At least part peripheral surface or at least part axial end face between the rivet body and casing are in contact, preferably
Ground, the end face of described sleeve pipe is against the peripheral surface of rivet body.Further preferably, the end face of described sleeve pipe is against the groove knot of rivet body
Structure.
The structure of the anti-slop serrations is not particularly limited, as long as the relative rotation between casing and rivet body can be prevented.
Preferably, the anti-slop serrations are uniformly distributed circumferentially on rivet body and/or casing.
The anti-slop serrations are arranged on the contact site of both rivet body and casing, to prevent the phase on casing and rivet body circumferential direction
To moving namely preventing the relative rotation of casing and rivet body.
Preferably, the anti-slop serrations are distributed on the divided edge structure of rivet body.Further preferably, the anti-slop serrations are along riveting
Body is circumferentially distributed and along the axially extending a plurality of anti-skid chequer of rivet body.
Preferably, the blocking head is equipped with the counterbore being adapted with limiting cap shaped.The limited cap and blocking head
End face it is concordant.
The limited cap is sunken to completely in the counterbore of blocking head, and limited cap is concordant with the homonymy axial end face for stopping head, core
After bar is broken at cut-off neck slot, section of the core bar at cut-off neck slot and the corresponding axial end face of limited cap and blocking head are concordant.
The clinching method of the blind riveting bolt, includes the following steps：
By the blind riveting bolt-through riveting part；
The relative position for keeping rivet body and riveting part is constant, driving core bar rotation；
Carrying out circumferential limiting to casing by rivet body makes casing axially movable and is hampered by riveting part and deformation；
When the deformation position of casing pushes against riveting part both sides with the blocking head, core bar is twisted off, completes riveting.
Compared with prior art, blind riveting bolt provided by the utility model has the following advantages：
(1) the blind riveting bolt is only made of four components, and assembling is simple, and manufacture is at low cost；
(2) rivet body is hollow structure, and no internal thread avoids the problem of titanium alloy tapping is difficult, not only reduces and adds
Work difficulty is greatly reduced manufacture cost；
(3) tail end of the core bar only with casing cooperation is equipped with external screw thread, and process is simple, at low cost；
(4) relative position of core bar and rivet body does not change in bolt installation process, so as to only be adjusted by size
It can be realized and flush section；
(5) bolt after installing can form " big base angle " bulge, and bulge diameter is followed closely much larger than staking snap riveting, ensures pretightning force
Etc. performances be much larger than staking type self-plugging rivet；
(6) after installing, anti-slop serrations and the plastic hoop of rivet body are inlayed together, form mechanical self-latching structure.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model blind riveting bolt；
Fig. 2 is the schematic cross-section of the utility model blind riveting bolt；
Fig. 3 is the schematic diagram of rivet body in the utility model blind riveting bolt；
Fig. 4 is the schematic diagram after the completion of the riveting of the utility model blind riveting bolt；
Fig. 5 is the schematic cross-section after the completion of the riveting of the utility model blind riveting bolt.
In figure：1st, core bar；1a, drive section；1b, cut-off neck slot；1c, limited cap；2nd, rivet body；2a, blocking head；2b, groove knot
Structure；2c, anti-slop serrations；3rd, casing；3a, deformation section；3b, changeover portion；3c, push section；4th, packing ring；5th, riveting part.
Specific embodiment
Below in conjunction with the accompanying drawings, the utility model blind riveting bolt is described in detail.
As shown in Figure 1 and Figure 2, blind riveting bolt, including carrying the core bar 1 of limited cap 1c, being threadably mounted on core bar 1
Casing 3 and be set in rivet body 2 on core bar 1 and between limited cap 1c and casing 3.
As shown in Figure 1, with cut-off neck slot 1b on core bar 1, cut-off neck slot 1b sides are that the drive section 1a twisted off after installing (drives
The length of dynamic section 1a is L1), opposite side is riveting segment (length of riveting segment is L2), and limited cap 1c is located in riveting segment and neighbouring
Cut-off neck slot 1b, the one end of riveting segment far from limited cap 1c carry and 3 matched external screw thread of casing.
Casing 3 remains in riveting process and removes remaining of external thread section with externally threaded thread fitting, riveting segment
Peripheral surface is smooth surface, and as shown in Fig. 2, Fig. 5, in the axial direction of rivet, external thread length is about rivet segment length one
Half.
As shown in figure 3,2 one end of rivet body is equipped with the blocking head 2a for the cooperation that offsets with limited cap 1c, the other end and set of rivet body 2
3 circumferentially positioned cooperation of pipe, rivet body 2 are equipped with the divided edge structure 2b of guiding deformation section 3a axial movements, groove towards one end of casing 3
Structure 2b is equipped with anti-slop serrations 2c, and anti-slop serrations 2c is axially extending along rivet body 2, and along the circumferential evenly arranged annular knurl line of rivet body 2.
As shown in Fig. 2, 3 thread fitting of casing, on the external thread section of core bar 1, as shown in Figure 1 and Figure 2, casing 3 is in an axial direction
Include deformation section 3a, changeover portion 3b and push section 3c successively, the 1/3 of each section of axial length substantially 3 axial length of casing.
As shown in Fig. 2, deformation section 3a is nested with deformable packing ring 4, deformation section towards rivet body 2 and between core bar 1
3a is equipped with the annular groove of accommodating packing ring 4, and deformation section 3a wall thickness is most thin；Push section 3c far from rivet body 2 and wall thickness it is most thick, with core
The external screw thread thread fitting of bar 1；The outer diameter of changeover portion 3b is slightly less than deformation section 3a and push section 3c, the interior walls be smooth of changeover portion 3b
The inner wall of linking push section 3c and deformation section 3a.
As shown in figure 5, after the completion of riveting, deformation section 3a is deformed upon completely, forms 180 degree bending structure, changeover portion 3b
Part deforms upon, and push section 3c is not deformed upon.
As shown in Fig. 2, it is not thread fitting between the inner wall smooth of packing ring 4, with core bar 1；In the deformation section 3a of casing 3
Wall is smooth, and smooth outer wall is bonded to each other with packing ring 4.
As shown in Fig. 2, anti-slop serrations 2c of the deformation section 3a ends of casing 3 against 2 abutting end of rivet body, in the work of anti-slop serrations 2c
Under, the relative rotation of casing 3 and rivet body 2 is prevented, realizes circumferentially positioned cooperation.
As shown in Figure 4, Figure 5, after the completion of riveting, stop head 2a and limited cap 1c against the side of riveting part 5, casing 3
Deformation section 3a against riveting part 5 opposite side.Blocking head 2a is equipped with the counterbore being adapted with limited cap 1c shapes, core bar
1 section is concordant with the corresponding axial end face of blocking head 2a and limited cap 1c.
Stop that the shape of head 2a is unlimited, the common plush copper of self-plugging rivet (as shown in Figure 4, Figure 5), 100 ° of countersunk heads may be used
With 130 ° of countersunk heads etc..
Can be axially free to slide to realize assembling along rivet between rivet body 2 and core bar 1, but in riveting process, rivet body 2 with
Core bar 1 keeps axial opposing stationary.
For the ease of keeping the stationary state of rivet body 2, the periphery of blocking head 2a is not smooth cylindrical surface, for the ease of behaviour
Make the rotation of core bar 1, the cylindrical surface of the periphery of drive section 1a also Non-smooth surface, the peripheral surface of rivet body 2 and the peripheral surface of drive section 1a
It is designed according to riveting gun.
Rivet body 2, core bar 1 and casing 3 use titanium alloy material, and packing ring 4 uses plastic material.
During riveting, by blind riveting bolt-through riveting part 5, under the action of riveting gun, rivet body 2 and riveting part are kept
5 relative position is constant, and driving core bar 1 rotates, and casing 3 does not rotate under the position-limiting action of rivet body 2, is rotated in core bar 1
Driving under, along core bar 1, axially adjacent to riveting part 5, and under the blocking of riveting part 5 deformation occurs for casing 3 into bulge,
As shown in Figure 4, Figure 5, when the torsional forces that cut-off neck slot 1b is subject to is more than the disconnected neck power of setting, core bar 1 is broken, and completes riveting.
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.For example, after the completion of in order to avoid riveting, core bar 1 is long beyond the end of casing 3,
There is externally threaded part to be set as mutually linkage and two sections separable (being rotated synchronously between two sections), close core core bar 1
One section of 1 tail end of bar (one end i.e. far from drive section 1a) is after completing to rivet, Automatic-falling.
The utility model is not limited to specific embodiment disclosed and described above, and the utility model some are repaiied
Change and change and should also be as falling into the scope of the claims of the utility model.In addition, it although is used in this specification
Some specific terms, but these terms are merely for convenience of description, do not form any restrictions to the utility model.
Claims (9)
1. a kind of blind riveting bolt, which is characterized in that including the set for carrying the core bar of limited cap, being threadably mounted on core bar
Manage and be set in the rivet body on core bar and between limited cap and casing；
Described rivet body one end is equipped with the blocking head for the cooperation that offsets with limited cap, the other end and sleeve circumferential location fit；
During riveting, core bar is rotated relative to rivet body, and casing is hampered by riveting part and deformation, and deformation position and the blocking head
Against the both sides of riveting part.
2. blind riveting bolt as described in claim 1, which is characterized in that with cut-off neck slot, the cut-off neck slot on the core bar
Side is the drive section twisted off after installing, and opposite side is riveting segment, and the limited cap is located in riveting segment and neighbouring cut-off neck slot, riveting
The one end of section far from limited cap is connect to carry and the matched external screw thread of described sleeve pipe.
3. blind riveting bolt as described in claim 1, which is characterized in that described sleeve pipe has deformation towards one end of rivet body
Section, the rivet body are equipped with the divided edge structure of guiding deformation section axial movement towards one end of casing.
4. blind riveting bolt as claimed in claim 3, which is characterized in that nested between the deformation section and core bar of described sleeve pipe
There is deformable packing ring.
5. blind riveting bolt as claimed in claim 3, which is characterized in that the contact site of both the rivet body and casing
On, at least one is equipped with to circumferentially positioned anti-slop serrations.
6. blind riveting bolt as claimed in claim 5, which is characterized in that the anti-slop serrations are uniformly distributed circumferentially in rivet body
And/or on casing.
7. blind riveting bolt as claimed in claim 6, which is characterized in that the anti-slop serrations are distributed in the divided edge structure of rivet body
On.
8. blind riveting bolt as described in claim 1, which is characterized in that the blocking head is equipped with limiting cap shaped phase
The counterbore of adaptation.
9. blind riveting bolt as described in claim 1, which is characterized in that the limited cap is concordant with the end face for stopping head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721371719.1U CN207526847U (en) | 2017-10-23 | 2017-10-23 | A kind of blind riveting bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721371719.1U CN207526847U (en) | 2017-10-23 | 2017-10-23 | A kind of blind riveting bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207526847U true CN207526847U (en) | 2018-06-22 |
Family
ID=62570762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721371719.1U Active CN207526847U (en) | 2017-10-23 | 2017-10-23 | A kind of blind riveting bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207526847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842545A (en) * | 2017-10-23 | 2018-03-27 | 浙江西子航空紧固件有限公司 | A kind of blind riveting bolt and its clinching method |
-
2017
- 2017-10-23 CN CN201721371719.1U patent/CN207526847U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842545A (en) * | 2017-10-23 | 2018-03-27 | 浙江西子航空紧固件有限公司 | A kind of blind riveting bolt and its clinching method |
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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: 20200318 Address after: 311222 No. 277, Xinken Road, Qiantang New District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Xizi aircraft parts Co., Ltd. Address before: No. 277, Qianjin Road, Qianjin Street, Xiaoshan District, Hangzhou, Zhejiang Province Patentee before: ZHEJIANG XIZI AEROSPACE FASTENERS Co.,Ltd. |