CN103925273B - A kind of self-plugging rivet - Google Patents
A kind of self-plugging rivet Download PDFInfo
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- CN103925273B CN103925273B CN201410083312.3A CN201410083312A CN103925273B CN 103925273 B CN103925273 B CN 103925273B CN 201410083312 A CN201410083312 A CN 201410083312A CN 103925273 B CN103925273 B CN 103925273B
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Abstract
The invention discloses a kind of self-plugging rivet, including with the core bar of limited cap and be sequentially sleeved at the deformable sleeve pipe on this core bar, rivet nut, driving nut, described core bar and rivet nut are threaded engagement, described driving nut and core bar are slidably matched, described rivet nut is provided with at least one projection towards the one end driving nut, and described driving nut is provided with, towards the end face of rivet nut, the recess matched with described projection.Drive nut and core bar for being slidably matched, convenient when installation, operation；By the projection that rivet nut is arranged, it is possible to inspection riveting quality easily and effectively；Core bar only has subregion to be provided with external screw thread, it is possible to save processing cost；Second end of rivet nut does not have cross to slot, and end face is more smooth；The hole wall driving nut does not have screw thread, drives nut conventional material manufacture, simple in construction, it is possible to reduce manufacturing process and equipment.
Description
Technical field
The present invention relates to fastener areas, be specifically related to a kind of self-plugging rivet.
Background technology
When the equipment in small space region is attached, generally require its connection means of consideration, such as adopt threaded at small space, just need to consider whether the shape of instrument, size can put into small space, in addition it is also necessary to consider whether that installation puts in place, whether connecting portion is reliable.
Therefore when small space region is attached, select is riveted more.Patent documentation if Authorization Notice No. is CN201011355Y discloses a kind of single-drum shaped self-plugging rivet.This single-drum shaped self-plugging rivet includes rivet nut and the blind rivet in rivet nut in tandem, rivet nut and blind rivet are to be formed to be fixedly connected, rivet nut is formed by the shade of capped pipe and capped pipe lower end, the circumferential wall of the end, upper end of the capped pipe of rivet nut is provided with a file silk, file silk is straight burr, also being provided with a file silk in the circumferential wall of the bottom of the capped pipe of rivet nut, file silk is straight burr.Single-drum shaped self-plugging rivet, after riveted joint processing, can make the state that the capped pipe of the rivet nut of single-drum shaped self-plugging rivet is acted the profile roused keep perfection, and can also reach the effect of good fixed structure piece.
During riveted joint, it is necessary to check riveting intensity, whether the flatness in riveted joint face meets requirement.Especially in some special industries, as at aviation field, the rivet of its use not only to meet the requirement of tensile strength, also need to ensure the smooth of riveted joint face., because cannot the plane of disruption be controlled, there is the irregular problem in riveted joint face in existing self-plugging rivet, out-of-flatness is riveted face then need to carry out the smooth polishing of end face, but easily abrade matrix surface and protective coating during polishing, cause unnecessary loss, but also production efficiency can be affected.
Patent documentation if Authorization Notice No. is CN203321996U discloses a kind of self-plugging rivet, and this rivet includes rivet nut, core bar, driving nut, body, ring；Rivet nut is at body and drives between nut, rivet nut with core bar for threadeding；Core bar bar footpath is full thread, and its one end is T-shaped column structure, is provided with at the middle part of core bar and twists into two parts groove, twists into two parts two sections of groove two ends Major Diam inconsistent, by head end Major Diam more than by the big footpath of threads；Body is complete hollow stepped hole cylindrical structural, is matched in clearance with core bar, is set in core bar；Ring is full hollow cylinder structure, is matched in clearance with body, is installed in the relevant position of body；One end that rivet nut matches with body is male-tapered, and another matches end for inner conical with driving nut, and whole rivet nut is complete hollow female thread structure；Driving nut is hexagonal female thread structure, with core bar for threadeding, drives nut inner thread big footpath size consistent with the big footpath of core bar threads；Drive one end that nut matches with rivet nut also for pyramidal structure.
This patent documentation rivet nut inner conical end has a bigger chamfering, and this end is generally of cross fluting, the purpose of such setting has two, and one is used to the contact force increasing rivet nut with driving nut, and whether two be qualified with screwdriver inspection riveted joint after riveted joint completes.But after this set can make riveted joint complete, inner conical end forms a pit, and because having cross fluting, for the aircraft of high-speed cruising, aircraft surfaces can produce strong turbulent flow, this increasing friction force, affects flight balance；Although so arranging and adding frictional force, but rivet nut is it is also possible that at hold assembly internal rotating, riveting work can be had a negative impact by this.The self-plugging rivet of this patent documentation, having riveted rear core bar has protrusion lock nut part to repair, and this can have a strong impact on outward appearance；The nut one end that drives of this patent documentation is provided with the cone boss coordinated with above-mentioned chamfering, this can increase processing and manufacturing difficulty, and in order to ensure the matching with lock nut, driving nut it is necessary that use titanium alloy manufacture, this can increase material cost and manufacturing cost.
Summary of the invention
For the problems referred to above, the invention provides a kind of simple in construction, be easily installed and check, the self-plugging rivet that rear surface is smooth is installed.
The technical scheme that the present invention takes is as follows:
A kind of self-plugging rivet, including with the core bar of limited cap and be sequentially sleeved at the deformable sleeve pipe on this core bar, rivet nut, driving nut, described core bar and rivet nut are threaded engagement, described driving nut and core bar are slidably matched, described rivet nut is provided with at least one projection towards the one end driving nut, and described driving nut is provided with, towards the end face of rivet nut, the recess matched with described projection.
Described limited cap is arranged on one end of core bar, and the described other end started to core bar from limited cap position that refers to successively is sequentially arranged.
Driving nut to have the hole matched with core bar, driving nut is slidably matched with core bar to refer to and drives the hole wall of nut not have screw thread, and driving nut can on core bar slidably.
When number of slugs is be more than or equal to two pieces, each projection is uniformly distributed along the circumference of rivet nut.
During use, the recess of nut is driven to cooperate with the projection of rivet nut, riveting tool blocks driving nut, making driving nut and rivet nut not move, riveting tool drives core bar to rotate simultaneously so that core bar moves relative to rivet nut, deformable casing deformation, after riveted joint arrives specified force, core bar ruptures, and now can drive nut or other forms that projection is twisted off by rotation.Described projection has two effects, and one is cooperate with recess, makes rivet nut not rotate；Whether two is obtain suitable shearing force by the size of adjustment projection, check rivet qualified with this.
As preferably, the quantity of described projection is two, and circumferential along rivet nut is uniformly distributed.
The shape of projection can be multiple, and as circular, square etc., as preferably, described projection is bar shaped, and the length direction of projection is radially.
Projection is that bar shaped better can contact cooperation with recess, and can be easy to control the power of projection fracture by the thickness and length regulating bar shaped projection.
As preferably, described rivet nut drives first end that one end is rivet nut of nut dorsad, and towards the second end that one end is rivet nut driving nut, the first end of rivet nut is provided with chamfering, and the second end of rivet nut is provided with the limiting stand of annular, and described projection is arranged on limiting stand.
Described chamfering has part to stretch in deformable sleeve pipe, acts the effect guiding the deformation of deformable sleeve movement.
As preferably, the outline of described limiting stand cross section is trapezoidal.
Described deformable sleeve pipe is provided with notch cuttype through hole, and this notch cuttype through hole is macropore away from limited cap one end, is aperture near limited cap one end, and the contiguous limited cap place of described core bar is provided with annular boss, and the outer wall of annular boss and aperture cooperate.
Such setting makes deformable sleeve pipe less near the thickness of shank portion, more yielding compared to away from shank portion.
As preferably, also including the packing ring being set on core bar, described packing ring is inlaid in deformable inside pipe casing, and the outer wall of packing ring and macropore cooperate.
Packing ring, for the space formed after filling deformable casing deformation, improves the intensity of deformable sleeve pipe with this.Described packing ring can be the multiple existing yielding materials such as plastic material.
Described rivet nut is hollow female thread structure, and described core bar is provided with the external screw thread suitable with rivet nut female thread, described external screw thread one end adjacent rings boss, and the contiguous rivet nut of the other end is towards the one end driving nut.
Described contiguous rivet nut is towards the one end driving nut, it is thus understood that, the externally threaded other end both can in the region that rivet nut is corresponding, it is also possible to expose in the region of rivet nut at core bar.Discounting for processing cost, core bar may be arranged as full thread structure (except annular boss).
In order to make instrument better clamping core bar, drive core bar to move, described core bar is provided with at least one catch surface away from one end of limited cap.
As preferably, described catch surface is two, is symmetrically distributed on core bar.
Described core bar is provided with breaking groove, and breaking groove can have various ways, as along the circumferentially spaced fracture port of core bar, as preferably, described core bar is provided with the breaking groove of annular in the region that deformable sleeve pipe is corresponding.
In order to facilitate instrument effective clamping can drive nut, the outline in described driving nut cross section is regular polygon.
The present invention drives nut that common material (steel or ferrum) can be used to manufacture.
Better in order to ensure stress performance, as preferably, described core bar, rivet nut, deformable sleeve pipe material be titanium alloy.
The invention has the beneficial effects as follows: drive nut and core bar for being slidably matched, convenient when installation, operation；By the projection that rivet nut is arranged, it is possible to inspection riveting quality easily and effectively；Core bar only has subregion to be provided with external screw thread, it is possible to save processing cost；Second end of rivet nut does not have cross to slot, and end face is more smooth；The hole wall driving nut does not have screw thread, drives nut conventional material manufacture, simple in construction, it is possible to reduce manufacturing process and equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation after the assembling of self-plugging rivet of the present invention；
Fig. 2 is the front view driving nut；
Fig. 3 is A-A sectional view in Fig. 2；
Fig. 4 is the explosive view of self-plugging rivet of the present invention；
Fig. 5 is the side view of rivet nut；
Fig. 6 is the front view of rivet nut；
Fig. 7 is B-B sectional view in Fig. 6.
Each accompanying drawing is labeled as:
1. core bar, 2. deformable sleeve pipe, 3. packing ring, 4. rivet nut, 5. drive nut, 6. limited cap, 7. annular boss, 8. breaking groove, 9. catch surface, 10. recess, 11. projections, 12. chamferings, 13. limiting stands.
Detailed description of the invention
Below in conjunction with each accompanying drawing, self-plugging rivet of the present invention is described in detail.
As shown in Fig. 1～7, a kind of self-plugging rivet, including with the core bar 1 of limited cap 6 and be sequentially sleeved at the deformable sleeve pipe 2 on this core bar from left to right, packing ring 3, rivet nut 4 and driving nut 5, core bar 1 and rivet nut 4 are threaded engagement, drive nut 5 and core bar 1 for being slidably matched, deformable sleeve pipe 2 is provided with notch cuttype through hole, this notch cuttype through hole is macropore away from one end of limited cap 6, it is aperture near one end of limited cap 6, the contiguous limited cap place of core bar 1 is provided with annular boss 7, the outer wall of annular boss and aperture cooperate, it is internal that packing ring 3 is inlaid in deformable sleeve pipe 2, and the outer wall of packing ring cooperates with macropore.
Rivet nut 4 drives first end that one end is rivet nut of nut 5 dorsad, towards the second end that one end is rivet nut driving nut 5, the first end of rivet nut is provided with chamfering 12, and the second end of rivet nut is provided with the limiting stand 13 of annular, this limiting stand is male-tapered, and namely the outline of limiting stand cross section is trapezoidal.Limiting stand 13 is evenly equipped with two projections 11 along the circumferencial direction of rivet nut, two projections are bar shaped, and the length direction of projection is radially, drives nut 5 to be provided with, towards the end face of rivet nut, the recess 10 matched with projection 11, and the outline in the present embodiment driving nut cross section is regular hexagon.
Core bar 1 is provided with the breaking groove 8 of annular in the region of deformable sleeve pipe 2 correspondence, and core bar 1 is provided with two catch surface being arranged symmetrically with 9 away from one end of limited cap 6.
Rivet nut 4 is hollow female thread structure, and core bar is provided with the external screw thread (not shown in FIG.) suitable with rivet nut female thread, external screw thread one end adjacent rings boss 7, the second end of the contiguous rivet nut of the other end.Second end of the contiguous rivet nut of external screw thread, it is thus understood that, the externally threaded other end both can in the region that rivet nut is corresponding, it is also possible to expose in the region of rivet nut at core bar.Discounting for processing cost, even core bar may be arranged as full thread structure (except annular boss).
The present invention is in use, the recess of nut is driven to cooperate with the projection of rivet nut, riveting tool blocks driving nut, driving nut and rivet nut is made not to move, riveting tool drives core bar to rotate simultaneously, core bar is moved relative to rivet nut, variable compression shape sleeve pipe, make it deform, along with the power suffered by the motion of core bar and the deformation core bar of deformable sleeve pipe is increasing, when power arrives certain value, core bar ruptures at breaking groove, now can drive nut or other forms that projection is twisted off by rotation, first projection can also not processed, when carrying out riveting quality inspection, by relevant device, projection is applied power to be cut off.Projection of the present invention has two effects, and one is make rivet nut not rotate with mating recesses, and two is whether inspection rivet is qualified.
The self-plugging rivet of the present invention, drives nut and core bar for being slidably matched, convenient when installation, operation；By the projection that rivet nut is arranged, it is possible to inspection riveting quality easily and effectively；Core bar only has subregion to be provided with external screw thread, it is possible to save processing cost；Second end of rivet nut does not have cross to slot, and end face is more smooth, during the self-plugging rivet of the aircraft utilization present invention, has good aerodynamic configuration；The hole wall driving nut does not have screw thread, drives nut conventional material manufacture, simple in construction, it is possible to reduce manufacturing process and equipment.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of patent protection of the present invention is namely limited; the equivalent structure transformation that every utilization description of the present invention and accompanying drawing content are made; directly or indirectly it is used in other relevant technical fields, all in like manner includes in protection scope of the present invention.
Claims (10)
1. a self-plugging rivet, including with the core bar of limited cap and be sequentially sleeved at the deformable sleeve pipe on this core bar, rivet nut, driving nut, described core bar and rivet nut are threaded engagement, it is characterized in that: described driving nut and core bar are slidably matched, described rivet nut is provided with at least one projection that can rupture towards the one end driving nut, and described driving nut is provided with, towards the end face of rivet nut, the recess matched with described projection；Also including the packing ring being set on core bar, described packing ring is inlaid in deformable inside pipe casing, and described packing ring is plastic material.
2. self-plugging rivet according to claim 1, it is characterised in that: the quantity of described projection is two, and circumferential along rivet nut is uniformly distributed.
3. self-plugging rivet according to claim 1, it is characterised in that: described projection is bar shaped, and the length direction of projection is radially.
4. self-plugging rivet according to claim 1, it is characterized in that: described rivet nut drives first end that one end is rivet nut of nut dorsad, towards the second end that one end is rivet nut driving nut, first end of rivet nut is provided with chamfering, second end of rivet nut is provided with the limiting stand of annular, and described projection is arranged on limiting stand.
5. self-plugging rivet according to claim 1, it is characterized in that: described deformable sleeve pipe is provided with notch cuttype through hole, this notch cuttype through hole is macropore away from limited cap one end, it is aperture near limited cap one end, the contiguous limited cap place of described core bar is provided with annular boss, and the outer wall of annular boss and aperture cooperate.
6. self-plugging rivet according to claim 5, it is characterised in that: the outer wall of packing ring and macropore cooperate.
7. self-plugging rivet according to claim 5, it is characterized in that: described rivet nut is hollow female thread structure, described core bar is provided with the external screw thread suitable with rivet nut female thread, described external screw thread one end adjacent rings boss, and the contiguous rivet nut of the other end is towards the one end driving nut.
8. self-plugging rivet according to claim 1, it is characterised in that: described core bar is provided with at least one catch surface away from one end of limited cap.
9. self-plugging rivet according to claim 8, it is characterised in that: described catch surface is two, is symmetrically distributed on core bar.
10. self-plugging rivet according to claim 1, it is characterised in that: described core bar is provided with the breaking groove of annular in the region that deformable sleeve pipe is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083312.3A CN103925273B (en) | 2014-03-08 | 2014-03-08 | A kind of self-plugging rivet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083312.3A CN103925273B (en) | 2014-03-08 | 2014-03-08 | A kind of self-plugging rivet |
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| Publication Number | Publication Date |
|---|---|
| CN103925273A CN103925273A (en) | 2014-07-16 |
| CN103925273B true CN103925273B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410083312.3A Active CN103925273B (en) | 2014-03-08 | 2014-03-08 | A kind of self-plugging rivet |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4752169A (en) * | 1985-04-12 | 1988-06-21 | Monogram Industries, Inc. | Flush break blind bolt |
| US4772167A (en) * | 1986-05-07 | 1988-09-20 | Monogram Industries, Inc. | Blind fastener with deformable drive nut |
| CN1392929A (en) * | 2000-09-13 | 2003-01-22 | 好孩子控股公司 | Blind fastener and drive nut assembly |
| CN103291719A (en) * | 2013-06-25 | 2013-09-11 | 贵州航天精工制造有限公司 | Self-plugging rivet |
| CN203847530U (en) * | 2014-03-08 | 2014-09-24 | 浙江西子航空紧固件有限公司 | Blind rivet |
-
2014
- 2014-03-08 CN CN201410083312.3A patent/CN103925273B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4752169A (en) * | 1985-04-12 | 1988-06-21 | Monogram Industries, Inc. | Flush break blind bolt |
| US4772167A (en) * | 1986-05-07 | 1988-09-20 | Monogram Industries, Inc. | Blind fastener with deformable drive nut |
| CN1392929A (en) * | 2000-09-13 | 2003-01-22 | 好孩子控股公司 | Blind fastener and drive nut assembly |
| CN103291719A (en) * | 2013-06-25 | 2013-09-11 | 贵州航天精工制造有限公司 | Self-plugging rivet |
| CN203847530U (en) * | 2014-03-08 | 2014-09-24 | 浙江西子航空紧固件有限公司 | Blind rivet |
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| Publication number | Publication date |
|---|---|
| CN103925273A (en) | 2014-07-16 |
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Effective date of registration: 20191230 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: 314422 No. 10, new road, Lian hang Economic Zone, Jiaxing, Zhejiang, Haining Patentee before: Zhejiang Xizi Aerospace Fastener Co., Ltd. |
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