FR2560941A1 - RETAINING CLAMP FOR FASTENING, WITH POSSIBILITY OF SUBSEQUENT DISASSEMBLY, CONSTRUCTION ELEMENTS ON A THREADED ROD - Google Patents

Abstract

RETAINING CLIP IN PLASTIC MATERIAL INCLUDING A FIXING ORIFICE MOUNTED BY PRESSURE ON A THREADED ROD, THE INTERNAL WALL OF WHICH IS CUT BY FLAT RELEASE RECESSES OBLICALLY ARRANGED IN RELATION TO THE HOLE AXIS AND ALONG THE ONE AU- ABOVE THE OTHERS, WHICH EXTEND, THROUGH THE WIDTH OF THE DIAMETER OF THE HOLE, UP TO THE OUTER WALL OF THE STAPLE, RIBS REMAINING OCCURRENCE BETWEEN THE RECESSES WITH SLOTTED WALL SEGMENTS OF A SEMI-CIRCULAR SHAPE TOWARDS THE EXTERIOR IN THE SENSE OF THE SLEEVE OF THE CLIP. THE WALL SEGMENTS 12 COMING IN SUPPORT CONTACT WITH THE THREADED ROD ARE REALIZED CAPABLE OF BENDING BY ELASTIC DEFORMATION, SOLIDARITY BY MOLDING OF THE RIBS. THE PRESENT INVENTION APPLIES IN PARTICULAR TO THE FIXING OF BRAKING CIRCUIT LINES ON THE FLOOR OF MOTOR VEHICLES.

Description

2560941 '

  The present invention starts from a retaining clip of the type described in the general definition of claim 1, and known for example from the DE-OS patent.

29 44 748.

  This staple serves to fix, with the possibility of subsequent disassembly, components or functional elements on support plates provided for this purpose with threaded rods, and is used, for example, for fixing brake circuit lines on the floor of

  motor vehicles. The particular arrangement of the

  perpendicular to the axis of the hole present for the

  the advantage of the fact that the molding segments require

  molds to allow these recesses to be obtained can be demolded in the same direction as the

  fingerprints for making the retainers.

  This makes it possible to manufacture this clip in good conditions of economic profitability using a mold of normal design in two parts, comprising two sets of impressions.

  When snugging under pressure

  staple on the threaded rod, the various elements constituting

  of the perforated wall, behave

  flexibly, like so many screw ratchets

  stem threading, the vertices of which come into

  staple retention, fit easily into the e-e

  Half-moon shaped voids in the wall of the

  grafe, and thus constitute an assembly link of 1 '

  action inherent in their form. Some segments of this

  king come, by their position relative to the summits -

  threads, insert, by springback effect, under the flanks of the nets, and thus ensure place in place also an assembly link by the mechanical action that results from their shape, so that the force restraint

  staple is well beyond what it is necessary to

  apply to the assembly of this one, and

  firstly when the threaded rod has a threaded tooth

  of saw. Despite the extremely large restraining force

  If it does so, this staple can be made

  removed by rotation and then

  fits on the threaded rod without its restraining force

2560941 '

  it is in any way diminished.

  As regards the effort that must be exerted to mount the clip, it has been found that for a reasonable sizing of the ribs in terms of molding techniques, the constituent segments of the wall were relatively rigid, and that the fitting of

  the staple on its threaded rod was only possible

  important effort, which in itself is not considered a disadvantage

  staples are laid in an automatic process in the chai

  do not mount. But if this staple must instead be placed by hand, the fitting force required for this

  effect exceeds the muscular effort that the car mechanic

  the is able to implement. He can then, well

  obviously, using a hammer to press the clip on the threaded rod, but there is always a risk of seeing the

  hammer to skid or strike frankly next to it, thereby deteriorating

if the head of the carossserie.

  The present invention therefore proposes to

  give the wall elements of the known staple which constitutes

  - kill the fixation hole, while maintaining the characteristics

  demoulding processes which are considered favorable,

  such a configuration that the fitting force can be

  be reduced, without being particularly detrimental to the restraining force, in such a proportion that the staple can be placed by hand, involving an effort

  reasonably compatible not exceeding 60 to 80 Newton.

  This object is realized according to the present invention in that the wall segments which come into contact with the threading are produced, capable of

  to deform elastically, integral with the ribs

  lage. This ability to bend by elastic deformation can be obtained according to another particularity of the invention, in that the wall segments have here

  a semi-annular shape or are made in the form of adhesive

  rette, and are connected at their lower part to the ribs which project outwards, ribs which are made in a thickness which is in the proportion of 1/2 to 2/3 smaller than the height "h "segments of

3 2560941

  Thanks to the reduction of the thickness of the ribs, to the confi-

  flange-shaped gouging of the wall segments, and at their integral disposition by molding the ribs of smaller section, the wall segments can be easily pushed outward when crossing the tops of the nets, and then return position under the

  blanks of the nets by simple elastic return.

  According to another configuration of the in-

  This ability to cede by elastic deformation IO can also be achieved by notching the ribs, from the perforated wall forming an orifice, at their level.

  sides, over a certain part of their length, and conferring

  with the remaining tabs a section corresponding to

  about half of that of the ribs, the passage template "w" existing between the ends of the terminal tabs of the ribs being in this case equal to, or very slightly greater than, the diameter of the core "k" of the threaded rod. In this configuration, the terminal tabs of the ribs

  can be easily raised when pushing the clip

  then return to their holding position by

  tick, which means that the latter, according to the position

  occupy them in relation to the threads of the stem, will come to bear at least partially according to a position

  oblique starting from the bottom against the flanks of the nets, or

  core penetrate thoroughly.

  We have described in more detail in

  the following two examples of practical realization of the invention

  tion, using the attached schematic sheet. The differences

  Illustrations represent respectively: Figure 1 - A close-up of the retaining clip, seen from the front,

  Figure 2 - A cut through the o-

  fixing wall II - II, Figure 3 - A close-up view of the front of another retaining clip,

  Figure 4 - A section through the o

  fixing wall according to IV - IV, with an overview on the retaining groove,

  Figure 5 - A cut through the o-

  fixing wall V-V, before fitting on the threaded rod, Figure 6 - The same sectional view, but once the staple is fitted on the threaded rod, and

  Figure 7 - The staple fitted on the

  threaded age, with pipes placed on it, life-size.

  The retaining clip illustrated in this

  The schematic board consists essentially of two or-

  retaining ganes (1) and (2) and a fixing hole (3) IO disposed at the center of the clip, which is intended to be force-fitted in the direction indicated by the arrow "P", on a threaded rod (9) welded or in any other way fixed to a support plate (8). The retaining members (1) and (2) are provided, for receiving and ensuring the holding in position of functional elements or components preferably having a cylindrical shape (4), such as pipes

  braking system, piping, cables or equipment.

  similar elements, receiving chutes (5) and retaining fingers (6), capable of yielding by elastic deformation,

  which, when introducing the elements to be fixed (4),

  tent on the side in a recess (7) to then resume

  their original position by elastic return, to exercise

  then the top a pressing pressure on the element (4) applied

on the staple (see Figure 7).

  The inner wall of the fixing aperture

  tion (3) is, as shown in Figures 2 and 5, broken by

  flat recesses (10) alternately arranged

  above the others, substantially the width of the diameter of the orifice, which, for reasons inherent in the requirements of the

  demolding, go, obliquely to the axis of the hole,

  to the outer wall of the clip, so that it remains between the recesses (IO) of the ribs (11) with perforated wall segments of semicircular shape.

  (12). These wall segments (12) are arranged slightly slightly

  clinched outwards in the direction of fitting 1 '

  staple, the free passage template "w" separating the

  upper sections (13) which protrude inwardly

  in this case smaller than the outer diameter

"d" of the threaded rod (3).

  This rod (3) preferably comprises

2560941 '

  a sawtooth-shaped thread, the flat upper flank of the threads (14) facilitating, in combination with the

  perforated wall segments (12) of semicircular shape with

  manages the outward inclination, the hooking of the staple, and the steeply sloping lower flank (15) of the same threads as

  a better restraining force, by the fact that

  put nets (16) come, when fitting the a-

  grafe on the rod, easily fit into the perforated wall segments {12) or that the perforated wall edges IO (13) come, after having crossed the threads vertices (16) insert by springback under the lower blank (15)

  nets, and take support against these from the bottom.

  The wall segments (12) which are

  in contact with the threaded rod (9) are, according to the invention

  integrally molded ribs (11) under conditions such that they yield by elastic deformation in the opposite direction to that of the fitting of the staple or away from the rod (9), in particular when crossing, behaving in this instance like pawls, the upper flanks (14) of the nets and the tops

  of these (16). This ability to yield by elastic deformation

  tick can, as illustrated in Figures 1 and 2, be obtained

  by giving the wall segments a semi-circular shape

  lair or flange, and by connecting them, capable of

  resiliently forming, at the lower portion of the ribs (11), the ribs being formed in a thickness of at least one-half to two-thirds lower than the height of the wall segments (12). Segments

  wall (12) are, for their part, for a better

  practice, made in a virtually identical thickness

  to the one of the ribs (11), so as to be able on the one hand easily yield elastic defrmation but also on the other hand to be strong enough to ensure, together with the supporting ribs (11il) and the threaded rod

  (3), the desired holding force.

  Figures 3 to 6 illustrate another

  possibility to confer on semi-circular wall segments

  (12) this ability to yield by elastic deformation

  tick. In this arrangement, the ribs (Il1) are, from the perforated walls (12) cut on their two sides on

2569 4 1

  a certain portion of their length, and on this same length

  made simultaneously in a reduced thickness of

  about half, so that the end tabs

  aunts (17) are raised with greater ease during the fitting of the staple. The clearance template "w" between the ridges (13) of the end tabs (17) is in 1 '

  dimensioned occurrence, for a better practical

  in such a way that it is equal to or even slightly larger than the diameter of the core "k" of the threaded rod (9). In the most favorable arrangement that can be had, the terminal tongue (17) arrives, for ease of lifting, flush with the rib wall

  (18) superior, that is to say backwards in the sense of

  and should have a thickness substantially equal to the width of the groove or groove "b" of the threaded rod (9)

  in such a way that the terminal tongue (17) comes into contact with

  sèrer thoroughly in this groove, ie between the flanks

  (14) and (15). This tongue can in this case adapt

  in satisfactory conditions at the

because of its elasticity.

Claims (4)

R e v a n d i c t i on s   1 - Retaining clip made of   a resilient hard-cedging plastic, having a fixing orifice which is engaged by pressure on a threaded rod, the inner wall of which is cut by flat demolding recesses arranged obliquely with respect to the axis of the hole, and alternately one above the other, stretching,   in the width of the diameter of the hole, to the outer wall   The upper part of the staple, the ribs remaining here IO between the recesses with semi-circular perforated wall segments slightly inclined outwards   in the direction of the fitting of the staple, and at the level of   which the free interval of passage between the edges of pa-   king projecting inwards is slightly more   the outer diameter of the threaded rod, ie   r a c t r e s a n t p a r e f ate that the segments   wall elements (12) coming into bearing contact with the threaded rod (9) are formed, capable of yielding by deformation   elastic, secured by molding the ribs (11).   2 - holding clip according to claim   cation 1, characterized by the fact that the segments of   wall (12) are made in a semi-circular configuration   re or flange-shaped, and are connected at the level of   their lower part to the ribs (11) oriented towards the ex-   the thickness of which is lower in the proportion of   1/2 to 2/3 at the height "h" of the wall segments (12).   3 - Retaining clip according to the   cation 2, characterized by the fact that the thickness of   king "s" flange-shaped wall segments (12) is substantially equal to the wall thickness of the ribs (11) o   4 - Holding clip according to the claim   1, characterized by the fact that the ribs (11)   are cut on both sides, from the wall a-   day (12) for part of their length, and that the   remaining terminal posts (17) are carried out in one   thickness which is appreciably less than half, the gauge of   free passage "w" between the ridges (13) of the end tongues   nales (17) being of the same size or very   significantly larger than the diameter of the soul k'k "of the stem Threaded (9).   - Retaining clip according to the claim   4, characterized by the fact that the ter-   mineral (17) arrives flush with the rib wall (18)   superior, ie rearward in the sense of   its thickness is substantially the same as the   groove "b" of the threaded rod (9).