• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a fastener (10) for the temporary assembly of at least two pierced structures, comprising: a body (11) capable of coming into contact with one face of the structures, a spacer (17) integral with said body, two elastic half-clips (15) each provided with a hooking nose (16); a mechanism movable relative to the body, comprising a threaded rod (18) connected to the half-clips and a control nut (20) mounted on said rod, the control nut comprising: an internal thread (19) cooperating with the threading (25) of the rod, - an external thread (26) cooperating with an internal tapping (28) of the body, the threading of the body and the threading of the control nut being of not reversed. The inversion of the steps, while ensuring the pulling of the rod during the installation of the staple, allows the assembly of the body and the control nut during the manufacture of the binding, and that the nut remains in engagement with the body during the removal of the staple, which replaces a stopping element and thus allows an overall reduction of the staple diameter.
    公开号:FR3014969A1
    申请号:FR1362690
    申请日:2013-12-16
    公开日:2015-06-19
    发明作者:Frederic Bigot
    申请人:LISI Aerospace SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to temporary fasteners, such as pinning staples.
    [0002] In the aeronautical industry, prior to final assembly of sheets or the like, it is known to temporarily assemble the sheets by means of staples inserted into through holes. Such staples, for example described in the document GB1327021 or the document US3260151, typically comprise: a body provided with a bearing face capable of coming into contact with a front face of the structures to be assembled; intended to pass through the holes and provided with a catching nose which can be applied against a rear face of the structures to be assembled, - a mechanism movable relative to the body, the mechanism comprising a threaded rod arranged coaxially with the body, an end the rod being extended by the clamp, the mechanism further comprising a control nut mounted on another end of the rod. This mechanism allows, by a first displacement of the threaded rod, to move the beaks from a "closed" position to an "open" position such that the outer diameter formed is then greater than the diameter of the through holes. In a second step, the displacement makes it possible to apply a tension in the sheets between the open jaws and the bearing face of the body. These staples are generally placed on the sheets using a screwdriver / unscrewing motor unit, provided with a so-called "nose of pose" tool. In order to automate the installation of the staples, it is necessary to allow the automatic displacement of the laying nose between the different holes of the structures to be assembled. However, the laying nose may be impeded to access a hole between staples already installed, because of the size of said staples. This results in malfunctions that require the intervention of a technician and slow down the installation of staples. Accordingly, it is an object of the present invention to provide a small clasp of diameter and height in order to facilitate the use of automatic installation tools.
    [0003] The invention relates in fact to a fixation for the temporary assembly of at least two previously drilled structures, of the type comprising: a body extending along an axis, said body being provided with a substantially perpendicular bearing face to the axis, said face being capable of coming into contact with a front face of the structures to be assembled; a spacer integral with said body; two resilient half-clips intended to pass through the bores, each clip being provided with a catching nose capable of being applied against a rear face of the structures to be assembled, the spacer being located between the two half-clips; a mechanism movable relative to the body, said mechanism comprising a threaded rod disposed coaxially with the body, an end of said rod being connected to the half-clips, said mechanism further comprising a control nut mounted on said rod; the control nut comprising: an internal thread cooperating with the thread of the rod; an external thread cooperating with an internal thread of the body; the thread of the rod and the thread of the nut being of not reversed. By the inverted steps of the threads, it is meant that the threads of the threaded rod and the nut form helices wound around the axis of the fastener, in opposite directions of rotation.
    [0004] The function of the step reversal is to allow the assembly of the body and the control nut during the manufacture of the fastener, to ensure traction of the pull rod during the installation of the clip, stop the nut in translation during the removal of the staple and thus prevent the nut from coming out of the body. The combination of threading of the nut and the tapping of the body replaces a stop element and allows an overall reduction of the diameter of the clip relative to other known devices, by deporting the stop function of the nut. on the body of the staple. Preferably, one end of the nut is provided with a driving portion adapted to cooperate with an installation tool for a rotational drive. More preferably, the thread of the nut is disposed on the outer cylindrical periphery of one end of the nut forming a stop, said end being opposite to the driving portion. Preferably, the tapping of the body is disposed on the inner cylindrical periphery of an end opposite to the bearing face.
    [0005] Preferably, the nut comprises a median portion whose outer diameter is smaller than the smallest diameter of the tapping of the body. Preferably, spring washers are disposed in the body between an inner surface of said body, disposed substantially perpendicular to the axis, and the abutment of the nut. The invention also relates to a method of temporary assembly of at least two previously drilled structures, comprising the following steps: a fastener as described above is installed on a laying automaton, said automaton inserts the two elastic half-pliers in a drilling of the structures to be assembled, - a drive tool of the automaton rotates the control nut. The automated installation is particularly favored by the dimensions of the clip according to the invention. The invention will be better understood on reading the description which follows and on examining the figures which accompany it. These are given as indicative and in no way limitative of the invention. The figures show: FIG. 1: an exploded view of a temporary fastening of the staple clip type according to one embodiment of the invention. ; - Figure 2: a sectional view of the clip of Figure 1 at the beginning of an installation method according to one embodiment of the invention; Figure 3 is a sectional view of the clip of Figure 1 during an installation method according to an embodiment of the invention; - Figure 4: a sectional view of the clip of Figure 1 at the end of an installation method according to one embodiment of the invention; - Figure 5: a sectional view of a temporary fastening staple type pinning according to another embodiment of the invention. FIG. 1 shows an exploded view of a temporary fastening pin clip type according to one embodiment of the invention. Figure 2 shows a sectional view of the same assembled staple. The clip 10 comprises a body 11, substantially cylindrical and arranged 35 along an axis 12. One end of the body 11 along said axis is provided with a tip 13. Said tip has a bearing face 14, perpendicular to the axis 12 and capable of coming into contact with a face of elements to be assembled, such as pierced sheets. The clip 10 also comprises two elongated half-clips 15, each provided with a hooking nose 16 which can be applied against another face of the sheets to be assembled, through the aligned bores of the sheets. A spacer 17 in the form of a fixed plate is disposed between the half-clips 15. The function of the spacer is to keep the beaks spread open. When the clip is in the "free" or "closed" position, as in FIG. 2, the half-clips 15 extend out of the body 11 so that the hooking beaks 16 protrude from the spacer and are contact each other. The clip 10 further comprises a threaded rod 18 disposed along the axis 12 and movable relative to the body 11. One end of the rod 18 is fixed to the two half-clips 15. The rod is provided with a thread 25 on its outer surface. The control nut 20 has on its inner surface a tapping 19 adapted to cooperate with the thread 25 of the threaded rod 18, so that the rod can move along the length of the nut 20. In FIG. 2, in position "Free", the thread of the rod 18 is not engaged with the tapping 19. One end of the nut 20 opposite the half-pliers 15 is provided with a portion 21 of drive. The outer shape of said portion, for example having flat portions, allows driving of the nut by a laying tool. The portion 21 has for example a six-sided shape, but may have other forms. Furthermore, spring washers 22 are disposed along the axis 12 between a front stop 23 of the nut, located at the end opposite the driving portion 21, and an internal stop 24 of the body 11, formed by a cylindrical bottom disposed substantially perpendicular to the axis 12. The nut 20 further comprises a thread 26 disposed on the outer cylindrical periphery close to the end stop 23. This thread 26 is short and has only a few threads.
    [0006] At one end 27 opposite the bottom 24, the body 11 comprises an internal thread 28, adapted to cooperate with the thread 26 of the nut. Tapping 28 also has a small number of threads. The thread 25 of the threaded rod and the thread 26 of the nut 20 correspond to opposite screwing directions. In this example, the thread 25 of the threaded rod is clockwise while the thread 26 of the nut is counter-clockwise. Between the threaded annular portion of the end stop 23 and the drive portion 21, the nut comprises a cylindrical middle portion 29 whose outer diameter is smaller than the smallest diameter of the threaded portion of the body 11. There is thus a set allowing the nut 20 to slide and turn in the body 11, on a stroke limited on one side by the spring washers 22, and on the other side by the end 27 comprising the thread 28.
    [0007] The thread 26 of the nut and the tapping 28 of the body are in engagement with each other only during the assembly of the temporary fastener 10. Said assembly is carried out as follows. At first, the spring washers 22 are inserted inside the body 11 until they come into contact with the bottom. Then, the threaded rod 18 provided with the two half-clips 15 is inserted into the body 11, until the half-clips 15 pass through the spring washers 22. The spacer 17 is inserted between the half-clips and in a slot on a front face of the body 11, then the tip 13 is clipped or screwed on the body to block any movement of said spacer. One face of the threaded rod 18 rests against the spring washers 22.
    [0008] The nut 20 is manually screwed into the body 11 in a counter-clockwise direction, engaging the thread 26 of the nut and the tapping 28 of the body 11. The nut 20 is screwed in until the thread 26 is no longer engaged with the tapping 28. Due to the clearance between the median portion 29 of the nut and the threaded end 27 of the body, the nut 20 is pushed inside the body 11 to enter contact with the threaded rod 18. Due to the positive clearance between the threads of the threads 26 of the nut and the tapping thread 28 of the body and the inversion of the threads, the nut can not be pulled out of the body during the installation or removal of the staple in structures. Indeed, the clip 10 can be disassembled only manually by pulling on the nut 20 so as to bring the thread 26 of the nut into contact with the thread 28 of the end 27 of the body, and by screwing the thread 26 on the tapping 28 clockwise. A method of using the clip 10 on a structure takes place for example as follows: the clip 10 is introduced into a laying nose (not shown) which blocks the body 11 in translation and rotation. The laying nose is for example mounted on a robot that positions the clip 10 on a structure (not shown), by introducing the half-clips 15 into a through hole of said structure.
    [0009] The laying nose is for example equipped with a drive key whose shape is complementary to the surface 21 of the nut 20. The key exerts a pressure and drives the nut 20 in rotation along the axis 12 in the clockwise; the nut then moves in translation on the thread 25 relative to the body 11, so as to bring the stop 23 of the nut into contact with the spring washers 22. In this position, the thread 26 of the nut and the thread 28 of the body are not arranged in contact with each other, so that they can not engage. The nut 20 remains in the body 11. The drive key continues to rotate the nut 20, the tapping 19 of the nut engaged with the thread 25 of the rod 18, said rod then progressing to the the inside of the nut towards the surface 21, as shown in Figure 3. The spacer 17 is then found between the spouts 16, the latter then being able to abut on one side of the structure to be assembled. The tightening torque and the crushing of the spring washers 22 by the nut 20 makes it possible to apply a tension in the structural elements, said tension being previously parameterized at the level of the laying tool. In FIG. 4, the rod 18 is represented after having completed its maximum stroke within the nut 20. The spacing 30 between the spouts 16 and the face 14 of the nozzle 13 indicates the minimum thickness of a structure that can be assembled by the clip 10. During the installation of the clip 10, the thread 26 of the nut and the tapping 28 of the body are never arranged in contact with each other, so that they can never engage. The nut 20 remains in the body 11 during the entire pose. To remove the clip 10, the nose is advanced until the key comes into contact with the drive surface 21 of the nut. The key then drives the nut 20 in a counterclockwise direction, the body 11 being held fixed in rotation. Under the effect of the rotation exerted, the nut 20 slides in the body 11 until the thread 26 of the end stop comes into contact with the tapping 28 of the body 11. Because of the pitch inversion, the nut bears against the end of the body without the thread 26 and the thread 28 engaging. The threaded rod is driven towards the front stop 23 of the nut. This progression returns the nozzles 16 beyond the spacer 17 so that they touch and return to an outside diameter less than the diameter of the through hole of the structure.
    [0010] The staple can be removed from the hole and reused later. Due to the suppression of a retaining ring between the body and the nut, such a clip 10 is more compact than most similar known devices and allows a succession of installation by manual and / or robotic tools on a beach not more tight.
    [0011] In addition, the shape of the staple has a gripping groove 31 (Figure 4), useful for cooperation with the tool in the laying waiting phase. This feature, as well as its cylindrical shape, facilitate its use by a robotic mechanism. Alternatively, the staple may not include spring washers 22.
    [0012] FIG. 5 represents a staple 110 according to an alternative embodiment of the invention. The clip 110 has the same elements as the clip 10 described above, with the exception of the tip 13. More specifically, the clip 110 comprises a tip 113 comprising a tubular portion 115 of outer diameter identical to the body 11 of the clip 110. The tip 113 further comprises a flange 114 forming a bearing surface on a structure. The flange 114 has the shape of a disk of diameter greater than the diameter of the body 11. The cylindrical portion 115 comprises on its inner surface an annular projection which snaps into a ring groove formed on the front end of the body 11 .
    [0013] The flange 114 makes it possible to ensure a free support of the laying tool on the staple and to improve the relocation of the staple by robot vision, because the flange is close to the structure to be assembled.
    权利要求:
    Claims (7)
    [0001]
    CLAIMS1.- Fastening (10, 110) for the temporary assembly of at least two previously drilled structures, of the type comprising: - a body (11) extending along an axis (12), said body being provided with a face (14, 114) bearing substantially perpendicular to the axis (12), said face being capable of coming into contact with a front face of the structures to be assembled, - a spacer (17) integral with said body, - two half elastic grippers (15) intended to pass through the bores, each half-gripper being provided with a hooking spout (16) capable of being applied against a rear face of the structures to be assembled, the spacer being situated between the two half-grippers, - a mechanism movable relative to the body, said mechanism comprising a threaded rod (18) disposed coaxially with the body, an end of said rod being connected to the half-grippers, said mechanism further comprising a nut (20) of control mounted on said rod, said attachment characterized in that the control nut comprises: - an internal thread (19) cooperating with the thread (25) of the rod, - an external thread (26) cooperating with an internal thread (28) of the body, the threading of the rod and the thread of the nut being of not reversed.
    [0002]
    2. Fixing according to claim 1, such that an end of the nut is provided with a drive portion (21) adapted to cooperate with an installation tool for a rotational drive.
    [0003]
    3. Fastening according to claim 2, such that the thread (26) of the nut is disposed on the cylindrical outer periphery of one end (23) of the nut forming an abutment, said end being opposed to the portion of training (21).
    [0004]
    4.- Fixing according to claim 3, such that spring washers (22) are arranged in the body (11) between an inner surface of the body (11) disposed substantially perpendicular to the axis (12) and the stop (23). the nut (20).
    [0005]
    5. Fastening according to one of the preceding claims, such that the tapping (28) of the body is disposed on the inner cylindrical periphery of an end opposite to the bearing face (14).
    [0006]
    6. Fastening according to one of the preceding claims, such that the nut comprises a medial portion (29) whose outer diameter is smaller than the smallest diameter of the tapping (28) of the body.
    [0007]
    7. A method of temporary assembly of at least two previously drilled structures, comprising the following steps: a fastener (10, 110) according to one of the preceding claims is installed on a laying automaton, said automaton inserting the two elastic half-pliers in a drilling of the structures to be assembled, - a drive tool of the automaton rotates the control nut.
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    同族专利:
    公开号 | 公开日
    ES2668309T3|2018-05-17|
    CN105934592B|2018-05-22|
    US10527080B2|2020-01-07|
    BR112016013892A2|2018-05-22|
    US20160312815A1|2016-10-27|
    CA2930143A1|2015-06-25|
    EP3084235B1|2018-02-14|
    CN105934592A|2016-09-07|
    RU2016128991A|2018-01-23|
    WO2015091335A1|2015-06-25|
    EP3084235A1|2016-10-26|
    FR3014969B1|2016-01-29|
    MX2016007599A|2016-10-04|
    MA39002A1|2017-03-31|
    RU2662129C1|2018-07-23|
    KR20170027692A|2017-03-10|
    JP2017508629A|2017-03-30|
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    法律状态:
    2015-12-23| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-29| PLFP| Fee payment|Year of fee payment: 4 |
    2017-12-29| PLFP| Fee payment|Year of fee payment: 5 |
    2019-09-27| ST| Notification of lapse|Effective date: 20190906 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1362690A|FR3014969B1|2013-12-16|2013-12-16|TEMPORARY FIXATION|FR1362690A| FR3014969B1|2013-12-16|2013-12-16|TEMPORARY FIXATION|
    BR112016013892-9A| BR112016013892A2|2013-12-16|2014-12-15|temporary fixer|
    MX2016007599A| MX2016007599A|2013-12-16|2014-12-15|Temporary fastener.|
    CN201480065590.4A| CN105934592B|2013-12-16|2014-12-15|temporary fastener|
    KR1020167019302A| KR20170027692A|2013-12-16|2014-12-15|Temporary fastener|
    EP14812476.1A| EP3084235B1|2013-12-16|2014-12-15|Temporary fastener|
    RU2016128991A| RU2662129C1|2013-12-16|2014-12-15|Temporary fastener|
    US15/104,528| US10527080B2|2013-12-16|2014-12-15|Temporary fastener|
    ES14812476.1T| ES2668309T3|2013-12-16|2014-12-15|Temporary fixation|
    MA39002A| MA39002A1|2013-12-16|2014-12-15|Temporary fixation|
    PCT/EP2014/077720| WO2015091335A1|2013-12-16|2014-12-15|Temporary fastener|
    CA2930143A| CA2930143A1|2013-12-16|2014-12-15|Temporary fastener|
    JP2016536872A| JP2017508629A|2013-12-16|2014-12-15|Temporary fastener|
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