CN105065407B - From brill pulling rivet - Google Patents

From brill pulling rivet Download PDF

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Publication number
CN105065407B
CN105065407B CN201510501039.6A CN201510501039A CN105065407B CN 105065407 B CN105065407 B CN 105065407B CN 201510501039 A CN201510501039 A CN 201510501039A CN 105065407 B CN105065407 B CN 105065407B
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CN
China
Prior art keywords
screw
drill bit
tube expansion
nut
pulling rivet
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CN201510501039.6A
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Chinese (zh)
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CN105065407A (en
Inventor
于国凡
于海飞
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Individual
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04Rivets; Spigots or the like fastened by riveting
    • F16B19/08Hollow rivets; Multi-part rivets
    • F16B19/086Self-piercing rivets

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Earth Drilling (AREA)

Abstract

The present invention proposes a kind of brill pulling rivet certainly, includes from pulling rivet is bored:Drill bit;Screw;Screw cap and the screw Access Division is located at first end and the second end of the screw rod respectively, and the screw Access Division is connected to the connection end of the drill bit;Nut, is connected through a screw thread on the second end of the screw rod and between the connection end of the drill bit and the screw cap;The outer wall of the nut is provided with multiple spaced chutes;Tube expansion, is set on the screw rod and positioned between the nut and screw cap;The first end of the tube expansion is close to the screw cap, and the second end of the tube expansion is for distending end and close to the nut;The tube expansion includes the side wall of multiple spaced strips, and opening is formed between the second end of the tube expansion, the side wall of multiple strips;The side wall of the strip can be slided in corresponding chute.Present invention reduces the activity duration, operating efficiency is improved, the instrument of operation is reduced.

Description

From brill pulling rivet
Technical field
It is especially a kind of itself to bore open the brill pulling rivet certainly of mounting hole the present invention relates to a kind of pulling rivet.
Background technology
Existing pulling rivet is all first to accomplish fluently mounting hole with boring bar tool, pulling rivet is then laid in mounting hole, finally Pulling rivet is acted on hand riveter again, firmly deforms the staking of pulling rivet, disc or circle are formed after pulling rivet deformed dilation Cylindricality chuck is stuck in mounting hole, completes staking connection.So, the deformed dilation process of punching and pulling rivet is two independent The expansion process of process, punching and the deformation of pulling rivet needs to use different instruments, adds the activity duration, reduces operation Efficiency.
The content of the invention
The present invention provides a kind of from pulling rivet is bored, and to solve, existing pulling rivet is punched and the expansion process of deformation needs to make With different instruments, activity duration length, the problem of operating efficiency is low.
Therefore, present invention proposition is a kind of from pulling rivet is bored, it is described to include from brill pulling rivet:
Drill bit, one end of the drill bit is drilling end, and the other end of the drill bit is the connection end of drill bit;
Screw, the screw includes:Screw cap, screw rod and the screw Access Division being sequentially connected;The screw cap and screw Access Division is located at first end and the second end of the screw rod respectively, and the screw Access Division is connected to the connection end of the drill bit;
Nut, is connected through a screw thread on the second end of the screw rod and positioned at the connection end of the drill bit and the screw Between cap;The outer wall of the nut is provided with multiple spaced chutes;
Tube expansion, is set on the screw rod and positioned between the nut and screw cap;The first end of the tube expansion is close The screw cap, the second end of the tube expansion is for distending end and close to the nut;The tube expansion includes multiple spaced Side wall;
The number of the chute is equal to the number of the side wall, and each described one chute of side wall correspondence is set, institute Stating side wall can slide in corresponding chute;
The maximum outside diameter of the drill bit is more than the maximum outside diameter of the nut, and the maximum outside diameter of the drill bit is less than described swollen The maximum outside diameter of the first end of pipe;
In the chute of the nut, the external diameter of the nut along from the screw cap to the direction of the drill bit gradually Become big.
Further, the connection end of the drill bit is provided with depressed part, and the screw Access Division is positioned at screw rod end protrusion Chuck, the shape of the chuck and the depressed part mutually coincide.
Further, the chuck is triangular prism, quadrangular or pentagonal prism.
Further, the side wall is strip, in the first end of the tube expansion, between the side wall of multiple strips It is interconnected to form circumferentially closed conical ring;Formed between the second end of the tube expansion, the side wall of multiple strips Opening.
Further, in the chute of the nut, the outer wall of the nut is cone.
Further, the number of the side wall of the strip is 2,3,4,5 or 6.
Further, the outer end of the screw cap is provided with the groove profile for matching with electric drill and being connected.
Further, the outer end of the screw cap is provided with cross type groove or yi word pattern groove or flower-shape groove.
Further, the first end of the tube expansion is provided with the positioning boss for being used for blocking mounting hole.
Further, the inner of the screw cap is provided with the groove with the positioning boss phase clamping.
In the present invention, drill bit is connected on screw, and nut and tube expansion are successively set on screw, when the bores are being drilled, pass through electricity Bore or tighten screw cap manually, screw is rotated, also synchronous rotary advances the drill bit of rotation formation with the screw clamping of screw therewith, Drill bit spiral cutting is advanced, and gets out mounting hole, because the maximum outside diameter of the drill bit is more than the maximum outside diameter of the nut, so In boring procedure, nut and tube expansion will not produce circumferential movement with respect to screw, nut and tube expansion it is fixed with respect to screw and with The preceding of drill bit and then advance.
After drilling is completed, the end of tube expansion is that the first end of tube expansion enters mounting hole, because the maximum outside diameter of drill bit is small In the maximum outside diameter of the first end of the tube expansion, so, the first end of the end of tube expansion, i.e. tube expansion is mounted hole and blocks fixation, Now rotary screw again, mounting hole no longer applies elastic force to drill bit, and drill bit is hanging, only rotates, does not readvance, thus, screw Rotation form nut with respect to screw motion, that is, produce threading action, the first end due to tube expansion is fixed, thus nut towards The end movement of tube expansion, nut is on the move, makes chute relative to the side wall movement of the strip of tube expansion, so that nut distending is swollen Pipe, constantly to screw-driving, then tube expansion gradually distending, fastening by connector riveting in drilled object, formed after drilling from boring The expansion and riveting of pulling rivet are determined.
As can be seen here, the present invention from the expansion of screw is bored into is completed by the rotation of screw, and this process is It will be bored into from the expansion for boring pulling rivet and unite two into one, and form continuous process, centre is not interrupted, can be by the company of screw It is continuous to rotate to complete the expansion of drilling and screw, tube expansion is carried out without changing instrument after drilling, present invention reduces the activity duration, is carried High operating efficiency, reduces the instrument of operation.
In addition, the present invention's is different from existing pulling rivet from brill pulling rivet, the riveting for boring pulling rivet certainly of the invention is surely By on tube expansion the side wall of spaced strip take root or take root formula expansion complete, have between the side wall of strip Opening, thus, this rivet is easier deformation relative to existing rivet, reduces labor intensity, and to the requirement of instrument More simple, needing riveting, riveting gun is changed into only needing electric drill or manual screw can be completed.
And then, use the present invention from bore pulling rivet so that on wall or wall body or mounting surface exposed portion size and Length is less, and the influence of reduction meeting subsequent installation or finishing, mounting surface is more attractive in appearance, especially bores drawing certainly what dismounting was thrown into During rivet, an exposed hole on mounting surface, without nut not easy to remove, is conducive to the attractive in appearance of finishing.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram from brill pulling rivet according to the embodiment of the present invention;
Fig. 2 is the main structure diagram from brill pulling rivet according to the embodiment of the present invention;
Fig. 3 is the dimensional structure diagram of first angle of the drill bit according to the embodiment of the present invention;
Fig. 4 is the dimensional structure diagram of second angle of the drill bit according to the embodiment of the present invention;
Fig. 5 is the main structure diagram of the drill bit according to the embodiment of the present invention;
Fig. 6 is the side structure schematic view of the drill bit according to the embodiment of the present invention;
Fig. 7 is the dimensional structure diagram of the screw according to the embodiment of the present invention;
Fig. 8 is the main structure diagram of the screw according to the embodiment of the present invention;
Fig. 9 is the left view structural representation of the screw according to the embodiment of the present invention;
Figure 10 is the right side structural representation of the screw according to the embodiment of the present invention;
Figure 11 is the dimensional structure diagram of the nut according to the embodiment of the present invention;
Figure 12 is the main structure diagram of the nut according to the embodiment of the present invention;
Figure 13 is Figure 12 A-A cross section structure diagrams;
Figure 14 is the side structure schematic view of the nut according to the embodiment of the present invention;
Figure 15 is the dimensional structure diagram of the tube expansion according to the embodiment of the present invention;
Figure 16 is the main structure diagram of the tube expansion according to the embodiment of the present invention;
Figure 17 is the left view structural representation of the tube expansion according to the embodiment of the present invention;
Figure 18 is the right side structural representation of the tube expansion according to the embodiment of the present invention;
Figure 19 is the working state schematic representation from the drilling for boring pulling rivet according to the embodiment of the present invention, now, tube expansion End is introduced into mounting hole;
Figure 20 is that according to the embodiment of the present invention from after the drilling for boring pulling rivet, the end of tube expansion enters the work of mounting hole View.
Drawing reference numeral explanation:
1st, drill bit 11, drilling end 13, connection end 130, depressed part 3, screw 31, screw Access Division 33, screw rod 35th, screw cap 351, the groove 353 of screw cap, groove 5, tube expansion 51, the side wall 510 of strip, opening 53, the of tube expansion The positioning boss 55 of one end 530, the second end 7 of tube expansion, nut 71, internal thread 73, chute 730, the bottom wall 75 of chute, Convex stupefied 9, wall body
Embodiment
In order to which technical characteristic, purpose and effect to the present invention are more clearly understood from, now control illustrates this hair Bright embodiment.
As shown in Figure 1, Figure 2, shown in Figure 19 and Figure 20, the pulling rivet that bores certainly of the embodiment of the present invention includes:
Drill bit 1, for creeping into the wall body 9 of drilled object, drilled object can be wall, door body, plate body etc., drill bit 1 material is, for example, the hard material of the suitable drilling cutting such as steel alloy, as preferably selecting, drill bit be it is disposable, Drill bit can creep into cutting iron plate, to carry out the installation of door and window, and one end of the drill bit is drilling end 11, the drill bit it is another One end is the connection end 13 of drill bit;As shown in Figure 3 and Figure 5, the external diameter of drilling end 11 and connection end 13 can with identical, such as Fig. 1 and Shown in Fig. 2, drilling end 11 is, for example, spiral shape, and for creeping into cutting, the connection end 13 of drill bit is used for attachment screw 3;
Screw 3, as shown in Fig. 7, Fig. 8, Fig. 9 and Figure 10, the screw includes:Screw cap 35, the screw rod 33 being sequentially connected With screw Access Division 31;The screw cap 35 and screw Access Division 31 are located at first end and the second end of the screw rod 33 respectively, The screw Access Division 31 is connected to the connection end 13 of the drill bit;In use, all wearing connector, such as hinge on screw 3 It is through on screw rod 33, and is blocked or positioned by screw cap 35, so as to realizes that hinge is fixed on the wall body 9 of drilled object;Screw The external diameter of cap 35 is greater than the bore of mounting hole, to be positioned at outside mounting hole;
Nut 7, as shown in Figure 11, Figure 12, Figure 13 and Figure 14, is connected through a screw thread on the second end of the screw rod and position Between the connection end 13 of the drill bit and the screw cap 35;The outer wall of the nut is provided with multiple spaced chutes 73, spaced by convex stupefied 75 between chute 73, convex stupefied 75 have the effects being oriented to;
Tube expansion 5, is set on the screw rod 33 and positioned between the nut 7 and screw cap 35, tube expansion 5 and screw rod 33 it Between there is no threaded connection relation;As shown in Figure 15, Figure 16, Figure 17 and Figure 18, the first end 53 of the tube expansion comes close to or in contact with institute Screw cap is stated, the second end 55 of the tube expansion is distending end and comes close to or in contact with the nut;The tube expansion includes a side wall Or the side wall 51 (also referred to as open up piece or swollen) or other shapes of multiple spaced side walls, for example, strip, described Shape between opening 510, or the head and the tail of a side wall is formed between second end 55 of tube expansion, the side wall of multiple strips Into opening;The material of the side wall 51 of tube expansion 5 or strip is, for example, aluminium, is easily deformed, distending;
The number of the chute 73 is equal to the number of the side wall 51 of the strip, 51 pairs of the side wall of a strip A chute 73 is answered to set, the side wall 51 of the strip relative in corresponding chute 73 can be slided;
The maximum outside diameter of the drill bit 1 is more than the maximum outside diameter of the nut 7, and the maximum outside diameter of the drill bit 1 is less than institute State the maximum outside diameter of the first end 53 of tube expansion;
In the chute 73 of the nut, the external diameter of the bottom wall 730 of the external diameter of the nut, i.e. chute is along from the spiral shell The direction of the head of a nail to the drill bit is become larger, so so that the side wall 51 of strip is relative in corresponding chute 73 to be slided When, the side wall 51 of strip is outwards deformed by the gradually distending of nut 7, the side wall 51 of final strip, and the of the tube expansion after expansion The whole mounting hole of the overflow of two end 55, is tightly secured in the wall body 9 of drilled object, reaches the purpose taken root, tube expansion is just secured, The fixed purpose of riveting is reached.
When the bores are being drilled, screw cap is tightened by electric drill or manually, screw is rotated, the rotation of screw is formed and screw clamping Also synchronous rotary advances drill bit therewith, and drill bit spiral cutting is advanced, and mounting hole is got out, because the maximum outside diameter of the drill bit is more than The maximum outside diameter of the nut, so in boring procedure, nut and tube expansion will not produce circumferential movement with respect to screw, nut and swollen The relative screw of pipe is fixed and with before drill bit and then advancing.
After drilling is completed, it is not required to take out drill bit, drill bit stayed in mounting hole, continues to make the of the i.e. tube expansion in end of tube expansion One end 53 enters mounting hole, because the maximum outside diameter of drill bit is less than the maximum outside diameter of the first end 53 of the tube expansion, so, tube expansion End be that the first end 53 of tube expansion is mounted hole and blocks fixation, now rotary screw again, mounting hole no longer applies bullet to drill bit Power, drill bit is hanging, only rotates, does not readvance, thus, the rotation of screw forms nut 7 and moved with respect to screw 7, that is, produces spiral shell Line is moved, due to the first end 53 of tube expansion fixed, so the first end 53 of nut 3 towards tube expansion is moved, nut is in movement In, chute 73 is moved relative to the side wall 51 of the strip of tube expansion, so that nut distending tube expansion, is formed after drilling from brill staking The expansion of nail, the second end of tube expansion is claw-like, thus the second end of tube expansion opens as pawl, forms and takes root formula riveting and determine, this Kind of claw-like is opened so that the fixed radius of riveting is bigger, takes root deeper, and the stronger of power or fixation is determined in riveting.
In addition, the present invention's also has function easy to disassemble from brill pulling rivet, can conveniently it take out.When mistake is bored in drilling Wait, by inverting screw, for example, acted on by electric drill on screw cap, electric drill reversion, the end of tube expansion is the first end of tube expansion 53, which are mounted hole, blocks fixation, and screw is rotated backward and fallen back, and drill bit can depart from the clamping with screw with the reversion of screw, Drill bit is stayed in mounting hole, and then screw exits mounting hole by the threading action of opposing nut, so, can easily just tear open Unload screw down, and easily disassemble the hinge worn on screw, the tube expansion kept as the inside can take out, also may be used Not take out, the dismounting of hinge is not affected.If tube expansion to be taken out, because the material of tube expansion is aluminium, thus hold very much It is easy to take out, and existing various expansion bolts can not all realize dismounting by the reversing of screw at present, can only pass through percussion or electricity Bore brill and hit and wait destructive mode, the screw in mounting hole is taken out, so existing various expansion bolts are disassembled very difficultly, Efficiency is low.
Further, as shown in Figure 4 and Figure 6, the connection end 13 of the drill bit is provided with depressed part 130, the screw clamping Portion 31 is the chuck protruded positioned at screw rod end, and the chuck and the shape of the depressed part 130 are mutually coincide.So, it is easy to The clamping of drill bit and screw, additionally it is possible to enable drill bit to bear larger moment of torsion while clamping.
Further, the chuck be triangular prism, quadrangular or pentagonal prism or other be capable of the shape of clamping.Such as Fig. 4 and Shown in Fig. 6, screw Access Division 31 is triangular prism, is easy to make and processes and stability under loading.
Further, as shown in Figure 15 and Figure 16, in the first end 53 of the tube expansion, the side wall 51 of multiple strips Between be interconnected to form circumferentially closed conical ring, be interconnected to form entirety, and structure so as to the side wall 51 of strip It is stable, it is easy to make;Opening 510 is formed between the second end 55 of the tube expansion, the side wall 51 of multiple strips, so as to The side wall 51 of each strip can distending.The first end 53 of tube expansion is circumferentially closed conical ring, is easy to the first end 53 of tube expansion Stablize it is progressive block mounting hole, accomplish to be bored into the transition of the stabilization of the expansion of screw.
Further, as shown in figure 11, in the chute 73 of the nut, the outer wall of the nut is cone, that is, is slided The bottom wall of groove is cone, can be stablized so as to nut, the side wall 51 of uniform, progressive distending strip.
Further, the number of the side wall 51 of the strip is 3, can thus complete expansion, and be easy to system Make.In addition the number of the side wall 51 of strip can also be 2,4,5 or 6 or other numbers.
Further, as shown in figs, the outer end of the screw cap is provided with the groove profile for matching with electric drill and being connected, For example, the outer end of screw cap 35 is provided with the groove 351 of screw cap, the groove 351 of screw cap is flower-shape groove or quincunx groove.So, Drilling can be completed by electric drill and from the expansion for boring pulling rivet, it is, with a boring bar tool, moreover it is possible to complete the work(of expansion Can, relative to prior art, drilling and expansion need two instruments to complete, and reduce an instrument, and in time can It is enough to realize that continuously, drilling and expansion are not required to pause and be continuously finished.
Further, the outer end of the screw cap is provided with cross type groove or yi word pattern groove.So, can also be by manually making The mode tightened with screwdriver is completed to drill and expanded.
Further, as shown in 15 and Figure 16, the first end 53 of tube expansion is provided with the positioning boss for being used for blocking mounting hole 530, positioning boss 530 is, for example, annular chuck, and the external diameter of annular chuck is more than the external diameter of drill bit, and positioning boss ensure that swollen Pipe is more stable to be clamped in mounting hole with what is fastened, so that tube expansion bears larger moment of torsion and drilling power.
As shown in figure 9, the inner of the screw cap is provided with the annular matched with the end face of the first end 53 of the tube expansion Groove 353 so that mutually pushed against between the first end 53 of screw and tube expansion, cooperates, in order to expand.
Schematical embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.For this Each part of invention can be mutually combined under conditions of not conflicting, any those skilled in the art, not depart from this Made equivalent variations and modification, all should belong to the scope of protection of the invention on the premise of the design of invention and principle.

Claims (9)

1. it is a kind of from brill pulling rivet, it is characterised in that described to include from brill pulling rivet:
Drill bit, one end of the drill bit is drilling end, and the other end of the drill bit is the connection end of drill bit;Drilling end is spiral Shape;
Screw, the screw includes:Screw cap, screw rod and the screw Access Division being sequentially connected;Screw cap and the screw clamping Portion is located at first end and the second end of the screw rod respectively, and the screw Access Division is connected to the connection end of the drill bit;
Nut, be connected through a screw thread on the second end of the screw rod and positioned at the connection end of the drill bit and the screw cap it Between;The outer wall of the nut is provided with multiple spaced chutes;
Tube expansion, is set on the screw rod and positioned between the nut and screw cap;The first end of the tube expansion is close to described Screw cap, the second end of the tube expansion is for distending end and close to the nut;The tube expansion includes multiple spaced side walls;
The number of the chute is equal to the number of the side wall, and each described one chute of side wall correspondence is set, the side Wall can be slided in corresponding chute;
The maximum outside diameter of the drill bit is more than the maximum outside diameter of the nut, and the maximum outside diameter of the drill bit is less than the tube expansion The maximum outside diameter of first end;
In the chute of the nut, the external diameter of the nut gradually becomes along from the screw cap to the direction of the drill bit Greatly;
From the expansion of screw is bored into completed by the rotation of screw, this process is to be bored into from boring pulling rivet Expansion unites two into one.
2. it is as claimed in claim 1 from brill pulling rivet, it is characterised in that the connection end of the drill bit is provided with depressed part, described Screw Access Division is the chuck protruded positioned at screw rod end, and the chuck and the shape of the depressed part are mutually coincide.
3. it is as claimed in claim 2 from brill pulling rivet, it is characterised in that the chuck is triangular prism, quadrangular or pentagonal prism.
4. as claimed in claim 1 from boring pulling rivet, it is characterised in that the side wall is strip, the of the tube expansion Circumferentially closed conical ring is interconnected to form between one end, the side wall of multiple strips;At the second end of the tube expansion, Opening is formed between the side wall of multiple strips.
5. it is as claimed in claim 1 from brill pulling rivet, it is characterised in that the number of the side wall is 2,3,4,5 Or 6.
6. it is as claimed in claim 1 from brill pulling rivet, it is characterised in that the outer end of the screw cap is provided with to match with electric drill The groove profile of connection.
7. it is as claimed in claim 1 from brill pulling rivet, it is characterised in that the outer end of the screw cap is provided with cross type groove or one Font groove or flower-shape groove.
8. it is as claimed in claim 1 from brill pulling rivet, it is characterised in that the first end of the tube expansion, which is provided with, to be used to block installation The positioning boss in hole.
9. it is as claimed in claim 8 from brill pulling rivet, it is characterised in that the inner of the screw cap is provided with and the convex The groove of platform phase clamping.
CN201510501039.6A 2015-08-16 2015-08-16 From brill pulling rivet Active CN105065407B (en)

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Application Number Priority Date Filing Date Title
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CN105065407B true CN105065407B (en) 2017-08-25

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106015244A (en) * 2016-07-07 2016-10-12 苏州艾酷玛赫设备制造有限公司 Rivet

Citations (5)

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Publication number Priority date Publication date Assignee Title
US3851560A (en) * 1972-10-02 1974-12-03 Deane C Self-drilling expansion roof bolt
US5702216A (en) * 1996-08-27 1997-12-30 Wu; Ming-Hsin Expanding wall plug
CN102278343A (en) * 2011-07-14 2011-12-14 覃国君 Direct-entering expansion bolt
CN202251306U (en) * 2011-10-24 2012-05-30 瑛岛金属(天津)有限公司 Improved self-tapping self-plugging rivet
CN204878200U (en) * 2015-08-16 2015-12-16 于国凡 Draw rivet from brill

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060067803A1 (en) * 2004-09-27 2006-03-30 Hsu Chin J Self-drilling wall anchor device
CN202391892U (en) * 2011-12-29 2012-08-22 王春华 Combined hanging anchor bolt

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851560A (en) * 1972-10-02 1974-12-03 Deane C Self-drilling expansion roof bolt
US5702216A (en) * 1996-08-27 1997-12-30 Wu; Ming-Hsin Expanding wall plug
CN102278343A (en) * 2011-07-14 2011-12-14 覃国君 Direct-entering expansion bolt
CN202251306U (en) * 2011-10-24 2012-05-30 瑛岛金属(天津)有限公司 Improved self-tapping self-plugging rivet
CN204878200U (en) * 2015-08-16 2015-12-16 于国凡 Draw rivet from brill

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