Source: https://patents.google.com/patent/ES2350550A1/en
Timestamp: 2020-03-28 21:07:01
Document Index: 710084929

Matched Legal Cases: ['art 2', 'art 2', 'art 2', 'art 2', 'art 1', 'art 2', 'art 1']

ES2350550A1 - Removable union system of large thick pieces. - Google Patents
Removable union system of large thick pieces. Download PDF
ES2350550A1
ES2350550A1 ES200930162A ES200930162A ES2350550A1 ES 2350550 A1 ES2350550 A1 ES 2350550A1 ES 200930162 A ES200930162 A ES 200930162A ES 200930162 A ES200930162 A ES 200930162A ES 2350550 A1 ES2350550 A1 ES 2350550A1
ES200930162A
ES2350550B1 (en
Jose Gregorio Iniesta Menendez
2009-05-13 Application filed by Airbus Operations SL filed Critical Airbus Operations SL
2009-05-13 Priority to ES200930162A priority Critical patent/ES2350550B1/en
2011-01-25 Publication of ES2350550A1 publication Critical patent/ES2350550A1/en
2011-11-18 Publication of ES2350550B1 publication Critical patent/ES2350550B1/en
Detachable joining system for large parts thickness.
It is intended to join two pieces (1 and 2) that they are in contact with each other by their respective internal faces (3 and 4), existing in one of them a threaded blind hole (5) where a first threaded end portion (6) of a bolt (7) is coupled which includes an annular extension (9) that limits the tightening rotation of bolt (7) with interposition of a characteristic washer elastic (8) as a means to immobilize the bolt (7) preventing The same loosen up.
The other piece has holes interns (13) in correspondence with each of them staying a section (11) of the respective bolt (7), peeking out of said piece a second threaded end portion (14) of the bolt (7), this portion where a self-locking nut (15) is attached which fixes Both pieces together.
The present invention, as expressed in the set forth in this specification, refers to a system of detachable union of thick pieces in which part of the minus two overlapping pieces that are in contact with one of their faces, so that we only have access to the union system for one of the free faces of one of the pieces, while for the free face of the other partner piece we don't have access to the system of Union.
Thus, the object of the invention is to achieve a totally reliable union between the two overlapping pieces in issue in order to prevent these pieces from separating relatively to each other, achieving this goal through characteristic union system.
It is a safe system that avoids the one that can be loosen over the life of the joint.
When you need to join two or go s pieces where you cannot access the internal part of the assembly to be mounted, the usual solution is the use of rivets called "pull" or "Jo-bolts", which only they need access by one of the pieces to assemble to be able to be installed.
The problem arises when the pieces to be joined They have a thickness too large, since this type of rivets "pull" have a limited length; and when the pieces to join you want to disassemble in the future, since these rivets are considered permanent, it happens that the only way to extract them is through its breakage or drilling, operations that carry rigged damage and deterioration of the housings of the rivets
On the other hand, it should be noted that currently there are conical washers to provide permanent efforts in the direction of the tightening screws used in the joint between nut and screw in order to prevent loss of preload in the same.
In order to achieve the objectives and avoid the drawbacks mentioned in the previous sections, the invention proposes a detachable union system for large parts thickness in which it starts from two pieces to join (lower and top) that are in contact with each other by one of their faces, of so that once the union is made, you have access to the system of union by one of the free faces of one of the pieces (upper) while there is no access to said union by the free face of the other even piece (bottom).
For this, the joint system starts from a bolt with threaded end portions, one of which engages in a threaded blind hole of the lower part, said immobilizing bolt on that thread thanks to an annular extension that incorporates the same and above all thanks to a characteristic elastic washer that is sandwiched between that annular extension and the inner face of the lower part, internal face this on which the threaded blind hole, said elastic washer being the element which will prevent unscrewing the bolt.
The annular extension separates an upper section and other lower bolt.
The lower branch comprises a narrow portion corresponding to the location of the washer and the threaded portion to fit in the blind hole of the lower part.
On the other hand, the upper section includes a length that exceeds the thickness of the top piece and includes a extreme threaded portion, so that that upper section of the bolt it will be housed in a through hole of the upper part, making sure finally the union by means of a self-locking nut attached to the threaded end of the upper section of said bolt, while said nut will press against the free face of the upper part, ensuring a stable and secure connection between both pieces.
Conventionally, once the bolt is installed on the bottom piece without the incorporation of the feature spring washer, we would then mount the other top piece holding the assembly with the self-locking nut on the portion free threaded pin, securing only the threaded end of the corresponding bolt with the top piece while the union screw thread over the blind hole of the lower part no be secured, so that by vibrations or forces at that the set of the two joined pieces is submitted, said union threaded over the blind hole could loosen and cause mismatches and slacks and therefore a possible accident.
In contrast, in the invention at hand, the feature elastic washer is a somewhat special piece that Once installed in the system of the invention, it exerts a pressure and additional thrust in axial direction between both couplings threaded, so as to counteract any load or vibration that I can make that bolt loosen.
So, the spring washer has a characteristic geometry characteristic and is of a material that always it works in elastic regime (that does not suffer plastic deformations in the range of efforts to which it will be subjected). Depending in each case it can be a metallic material and even a plastic material.
Its special geometry will cause it to deform elastically the piece, this shop at all times to recover its initial form introducing the additional pressure we are looking for.
Depending on the type of joint, loads or efforts, type of material chosen, etc; you can play with him angle of the opening of some pins that incorporates the washer, the number of these pins, their geometry, etc. The case is that the piece constitutive of the washer can be deformed and at all times Store to recover its initial form.
Bolt tightening will deform the part constitutive special of the washer and will prevent it from coming back to Take its initial form. As the special piece constituting the Washer is elastic, you will always want to return to your initial zone, generating a reaction force on the central part of the bolt which will prevent it from loosening in correspondence with its coupling in the blind hole.
Once the washer in question is installed, place on top of the part that we want to join and install a nut self-braking by the upper threaded portion of the bolt by which We have access, as mentioned above.
On the other hand, in cases where it needs an additional pressure than the deformation of the washer was not able to provide us, you can equip the washer in a certain geometry that increases the friction in the joint area and avoid the rotation of the bolt.
This geometry can consist of making rough the part in contact with the bolt to increase the resistance to turn, and on the other hand, generate grimaces or teeth in the washer pins that stick into the piece to be joined and also contribute to avoid the rotation of the bolt.
This way we could get security extra in fixing the bolt, something that we cannot achieve with No conventional conical washer.
This joining procedure also gives us allows us to know in a certain way the tightening torque that we are giving to the bolt when we install it in the lower part. Own Washer will allow us to control the tightening torque.
Figure 1.- Shows an exploded view of the detachable joining system for thick pieces, object of the invention. It incorporates a characteristic piece as a washer elastic that together with a self-locking nut ensures the immobilization of the system of the invention.
Figure 2.- Shows a sectional view of the joining system of the invention in mounted position.
Figures 3 and 4.- Show views in perspective of the features pieces as washers elastic cited above.
Considering the numbering adopted in the figures, the detachable joining system of the thick pieces is intended to join two pieces, one upper 1 and one lower 2 that are in direct contact by respective internal faces 3 and 4 of those two pieces 1 and 2 so that a blind hole 5 has been made on the inner face 4 of the lower part 2, provided with a thread for coupling a first threaded end portion 6 of a bolt 7 with interposition of a characteristic elastic washer 8 that contacts against that internal face 4 of the lower part 2 and also contacts on an annular extension 9 integral with the bolt 7 itself, thus ensuring the immobilization of the bolt 7 on the lower part 2. Thus, the annular extension 9 separates a lower section 10 corresponding to the lower part 2 and an upper section 11 corresponding to the piece
The elastic washer 8 is coupled to the bolt 7 in correspondence with a short intermediate portion 12 of bolt 7 limited between the annular extension 9 and the beginning of the first extreme threaded portion 6.
On the other hand, the upper part 1 incorporates minus a through hole 13 where the upper section 11 of the bolt 7, this section incorporating a second threaded portion end 14 of bolt 7 protruding from the free face of the piece upper 1, a nut nut engaging in that threaded portion 14 self-braking 15 that will press against the free face of the piece superior 1, thus ensuring a correct immovable union of both pieces 1 and 2.
On the other hand the elastic washer 8 has a characteristic structure comprising a centered annular body 16 which limits a central hole 17 where the bolt 7 is inserted and inclined radial fins 18 pointing down, supporting the outermost free edges thereof 18 on the internal face 4 of the lower part 2, while the extension annular 9 of bolt 7 rests on the upper surface of the body ring 16 of spring washer 8.
That upper surface of washer 8 that is in contact with the annular extension 9 can incorporate a rough surface, defined for example by a profile in the form of triangular wave 19, thereby achieving an immobilization of the bolt 7 more reliable, preventing its rotation in the direction of loosen.
In turn, radial fins 18 can also incorporate teeth or notches 20 that allow a grip most reliable spring washer 8 on the inner face 4 of the bottom piece 2.
Once pin 7 has been immobilized, the washer elastic 8 maintains its elasticity and therefore maintains its thrust and axial direction pressure to ensure immobilization of the bolt 7 before possible vibrations and other external effects tending to loosen bolt 7.
The inner face 3 of the upper part 1 incorporates a recess or stepped and coaxial recess 21 to allow ring extension 9 and spring washer housing 8.
The forces of action 23 and reaction 22 that generate between the threaded fillets of the threaded end portion 6 of bolt 7 and tapping of blind hole 5 due to pressure axial exerted by the elastic washer 8, ensures the impediment of the rotation of bolt 7 in the direction of loosening.
1. Removable joining system of very thick pieces, being intended to join at least a first piece and a second piece, which are in direct contact by respective internal faces of those two cited parts, existing in the first of them, in correspondence with its inner face a threaded blind hole where a first threaded end portion of a bolt is attached which includes an annular extension that limits the bolt tightening rotation and separates a first section that includes at least the first threaded portion and a second section which is introduced in a through hole of the other even piece, whose free face protrudes a second threaded end portion of that second section where a self-braking nut is attached, defining a coaxial space around the bolt in correspondence with the internal faces of both pieces to join; characterized in that it incorporates anti-rotation means of the bolt (7) in its threaded coupling in the blind hole (5) of the first piece (2), said means consisting of an intermediate piece coupled to the bolt (7) and which is arranged between the extension annular (9) of that bolt (7) and a portion of the inner face (4) of that first piece (2).
2. Removable joining system for thick pieces according to claim 1, characterized in that the intermediate piece is an elastic washer comprising an annular body (16), on one of whose faces it supports the annular extension (9) of the bolt ( 7), tearing off the edge of said annular body (16) inclined radial fins (18) that seat their outermost free edges on the inner face of the first piece to be joined (2).
3. Removable joining system for very thick pieces according to claim 2, characterized in that the contact face of the annular body (16) of the elastic washer (8) incorporates a rough surface with a high degree of friction against the annular extension (9) of the bolt (7).
4. Removable joining system for very thick pieces, according to claim 3, characterized in that the rough surface of the contact face of the elastic washer (8) has a fine triangular wave-shaped profile.
5. Removable joining system for thick pieces, according to any one of claims 2 to 4, characterized in that the free edge will be outside the inclined radial fins (18) incorporates notches or serrations (20) with a greater degree of grip and friction on the inner face (4) of the first piece to be joined (2) that incorporates the blind hole (5).
6. Removable joining system for thick pieces, according to any one of the preceding claims, characterized in that between the first threaded portion (6) of the bolt (7) and the annular extension (9) of that same bolt (7) there is a short intermediate portion that corresponds to the location of the spring washer (8).
ES200930162A 2009-05-13 2009-05-13 Removable union system of large thick parts Active ES2350550B1 (en)
ES200930162A ES2350550B1 (en) 2009-05-13 2009-05-13 Removable union system of large thick parts
US12/607,565 US20100290862A1 (en) 2009-05-13 2009-10-28 Detachable joint for large thickness pieces
RU2011150401/02A RU2011150401A (en) 2009-05-13 2010-03-24 Large thickness parts connector assembly
CN2010800210442A CN102422032A (en) 2009-05-13 2010-03-24 System for the detachable connection of thick parts
EP10774581.2A EP2431619B1 (en) 2009-05-13 2010-03-24 System for the detachable connection of thick parts
PCT/ES2010/070172 WO2010130854A1 (en) 2009-05-13 2010-03-24 System for the detachable connection of thick parts
ES2350550A1 true ES2350550A1 (en) 2011-01-25
ES2350550B1 ES2350550B1 (en) 2011-11-18
ID=43068617
ES200930162A Active ES2350550B1 (en) 2009-05-13 2009-05-13 Removable union system of large thick parts
US (1) US20100290862A1 (en)
EP (1) EP2431619B1 (en)
CN (1) CN102422032A (en)
ES (1) ES2350550B1 (en)
RU (1) RU2011150401A (en)
WO (1) WO2010130854A1 (en)
KR101187022B1 (en) 2012-01-02 2012-09-28 김승희 Assembly structure using bolt
TWM509280U (en) * 2015-05-01 2015-09-21 Dtech Prec Ind Co Ltd Elastic buckling device and packaging carrier thereof
CN104986344A (en) * 2015-07-15 2015-10-21 江西洪都航空工业集团有限责任公司 Adjustable static pressure sensor installation structure
DE20208960U1 (en) * 2002-06-10 2002-09-19 Dahlmanns Kurt fixing screw
DE102005029529A1 (en) * 2005-06-25 2007-01-04 Bayerische Motoren Werke Ag System for fastening two components together comprises sliding nut with groove, into which one component fits, mounted on upper section of bolt separated from lower section by collar, below which second component is mounted
US2537527A (en) * 1947-05-01 1951-01-09 James H Heckert Nonloosening safety bolt
US4331414A (en) * 1980-05-12 1982-05-25 Wheatley Jr Thomas Leakproof stud bolt incorporating modified thread
2009-05-13 ES ES200930162A patent/ES2350550B1/en active Active
2009-10-28 US US12/607,565 patent/US20100290862A1/en not_active Abandoned
2010-03-24 RU RU2011150401/02A patent/RU2011150401A/en unknown
2010-03-24 EP EP10774581.2A patent/EP2431619B1/en active Active
2010-03-24 WO PCT/ES2010/070172 patent/WO2010130854A1/en active Application Filing
2010-03-24 CN CN2010800210442A patent/CN102422032A/en not_active Application Discontinuation
ES2350550B1 (en) 2011-11-18
US20100290862A1 (en) 2010-11-18
CN102422032A (en) 2012-04-18
EP2431619A4 (en) 2013-12-18
RU2011150401A (en) 2013-06-20
EP2431619B1 (en) 2017-05-03
EP2431619A1 (en) 2012-03-21
WO2010130854A1 (en) 2010-11-18
TWI225123B (en) 2004-12-11 Tolerance compensating mounting device
CA2444933C (en) 2008-12-16 Tolerance compensating mounting device
US9771962B2 (en) 2017-09-26 Fastening arrangement with tolerance compensation, and method for pre-assembly and assembly
DE102011106696A1 (en) 2013-01-10 Screwing element for attaching a cable to a counterpart
EP2495453A2 (en) 2012-09-05 Fixing device with tolerance compensation
US20040208722A1 (en) 2004-10-21 Fastener adapted for use with a structural member
ES2286001T3 (en) 2007-12-01 Fastening system for threaded rods.
WO2013043367A1 (en) 2013-03-28 Locking connector
ES2345081B1 (en) 2011-07-22 Separate arm device for insurance of a threaded union element.
2011-11-18 FG2A Definitive protection
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