FR2523498A1 - DEVICE FOR TIGHTENING AND UNLOCKING CONNECTIONS WITH SUSPENSION LEGS OF MOTOR VEHICLES - Google Patents

Abstract

A DEVICE FOR TIGHTENING ER LOOSENING SCREWED CONNECTIONS OF SUSPENSION LEGS, IN PARTICULAR THREADED COVERS EQUIPPING SUSPENSION LEG SLEEVES OF MOTOR VEHICLES AND PRESENT IN THEIR PERIPHERAL ZONE OF EXTRACTING NOTCHES FOR A DISCHARGE COUPLING 1 HAVING A CENTRAL BORE 5 AND IN ONE OF ITS FRONTAL FACES AT LEAST THREE RADIAL GROOVES 6 WITH SLOT-SHAPED OPENINGS IN WHICH SLOTS FITTED WITH COUPLING PROJECTS 4 ARE FIXED BY MEANS OF SCREWS. BE RADIALLY MOVED AND CHANGED, THESE COUPLING DISC 1 HAVING IN ITS OTHER FRONTAL SIDE HOLES 13 IN WHICH THE RODS 15 ENGAGE IN ADJUSTED MANNER OUTSIDE THE FLANGE 16 OF A COUPLING TUBE 2 AND DIAMETER OPPOSED IN RELATION TO THE AXIS 14 OF THIS TUBE.

Description

Device for tightening and loosening screw connections of

  suspension struts of motor vehicles.

  The present invention relates to a device for

  tighten and loosen screw connections of suspension struts

  board, in particular threaded caps fitted to sleeves of suspension struts of motor vehicles and which have at their peripheral surface and / or in their front face recesses for

mating projections.

  Most commonly used suspension struts

  ment, in particular on all motor vehicles

  risme, are provided with sleeves intended to receive the cy-

  liner of the shock absorber and on the upper end of the

  which is screwed a threaded cap having a central bore These threaded caps generally have, either at their periphery of the recesses in the form of grooves, or in their front face of the engagement holes located on determined radii and in which can

  engage the claws of a tool to screw or unscrew.

  However, depending on the type of vehicle, the threaded caps have various diameters or the recesses or

  the engagement holes are located on different spokes

  In addition, some threaded caps have three recesses or engagement holes offset from each other by an angle at the center of 1200, so

  that other threaded caps have four recesses

  elements or four engagement holes offset by one

  compared to others from an angle at the center of 900.

  The object of the present invention is to create an arrangement

  sitive of the kind mentioned above and which allows tapped caps as different from being screwed on sleeves of suspension struts and being unscrewed from them. This object is achieved according to the invention by providing

  a device which, intended to tighten and loosen links

  sounds of suspension struts, especially

  threaded caps fitted to suspension leg sleeves

  boarding of motor vehicles and having at their peripheral surface and / or in their front face

  recesses for coupling projections, is

  characterized by a coupling disc with a bore

  central sage and in one of its front faces at least three radial grooves with slit-shaped openings in which slides provided with projections

  are fixed by means of screws so that

  see be moved radially and changed, said coupling disc having in its other front face of

  recesses in the form of a coupling groove

  extending diametrically or from holes arranged in an ex-

  centered, as well as by a coupling tube provided at one end with a key profile and which at its other end

  has a coupling flange with ribs or ti-

  frontally projecting ges which are diametrically opposite with respect to the axis of the coupling tube and

  engage in an adjusted manner respectively in the

coupling or holes.

  In addition to the threaded caps already mentioned, which have recesses L at their periphery or holes

  of engagement in their front face, there are also

  tapped caps which have, instead of these recesses or engagement holes, a hexagon socket

forming key profile.

  To allow such threaded caps to be also screwed onto the corresponding suspension strut sleeves or unscrewed therefrom, the device according to the invention is further characterized by a key disc having a central bore and which comprises on one from its front faces a projecting hexagon profile

  axially and on its other front face at least one sail-

  rib in the form of a rib or the like engaging so

  fitted in a radial groove of the coupling disc.

  In this respect it is advantageous for the key disc to have on its front face opposite the hexagonal profile a centering ring engaging in an adjusted manner in

  the central bore of the coupling disc.

  Another advantageous characteristic of the invention consists in that the coupling disc present in

  its front face opposite to the radial grooves of the recesses-

  radially extending elements in which screw heads can be housed so as to be embedded and which are

  each located on the same polar radii as the grooves

  radial res provided on the opposite front face.

  According to yet another characteristic of the invention

  tion the coupling disc present on one of its

  front faces in total six radial grooves among the

  which four radial grooves have an angular distance of 900 between them and three radial grooves

an angular distance of 1200.

  Thanks to this embodiment, the device according to the invention can be used selectively both for tapped caps having only three recesses or

  engaging holes only in the case of tarau caps

  gods with a total of four recesses or mid-holes

  engages, it being understood that the recesses or holes in

  engagement are distant from each other distan-

  these equal angular values which are respectively 120 and 900.

  An additional variant of the invention is charac-

  characterized in that there are at least three slides with rectangular coupling projections and at least three slides with cylindrical coupling members intended to be fixed as desired in the radial grooves of the coupling disc. The additional feature of the invention,

  according to which the slides have tarau-

  dice which are each offset from the projections

  has the advantage that the coupling projections

  are movable according to larger dif-

  radius references of recesses or engagement holes

  -provided in tapped caps.

  Some embodiments of the invention are explained in more detail below with the aid of the appended drawings in which: FIG. 1 shows in section a first embodiment of the device according to the invention; Figure 2 is a view along line II-II of the coupling disc of Figure 1; Figure 3 is a view along line III-III of the coupling disc of Figure 1; Figure 4 is a front view corresponding to Figure 3 of another coupling disc; Figure 5 shows a threaded cap in top view; Figure 6 is a partial section along line VI-VI of Figure 5 Figure 7 is a front view corresponding to Figure 3 of a third coupling disc; FIG. 8 shows another tapped cap seen from above; Figure 9 is a partial section along the line IX-IX of Figure 7; Figure 10 shows the coupling disc of Figure 7 in perspective;

  Figure 11 shows a key disc in perspective.

ve;

  Figure 12 shows a threaded cap presented

both a hexagon socket;

  Figure 13 shows another perspective in perspective.

  me embodiment of the device according to the invention as that of Figure 1;

  Figure 14 shows a further embodiment.

  of the coupling disc; and

  FIG. 15 represents, in perspective, a device

  tif according to the invention placed on the threaded cap

  a suspension strut sleeve.

  The device shown in Figures 1, 2 and 3,

  designed to tighten and loosen threaded caps to

  chons of suspension legs, consists of a coupling disc 1 and a coupling tube 2 as well as a total of four slides 3 whose shape is recognizable

  most clearly in Figure 13-and which show each

  cun a rectangular coupling projection 4 The coupling disk 1 has a central cylindrical bore 5 and in its front face turned down in FIG. 1 and visible in top view in FIG. 3 are provided four radial grooves 6 offset the relative

  to the others of 900 and in which are placed ou-

  slot-like grooves 7 also extending di-

  radial rection The openings 7 are each narrower than the radial grooves 6 and make it possible to make there

  pass screws 8 which have a cylindrical head 9 pre-

  feeling a hexagon socket 10 The radial grooves present

  tent in cross section a rectangular profile and are each open both in the direction of the bore 5 and at the periphery of the coupling disc 1 The slot-shaped openings 7, on the other hand, are shorter and each end at a some distance from the periphery

  and the bore 5 of the coupling disc 1.

  The sliders 3 are adapted to said profile of the radial grooves 6 so that they can be placed in the latter and also made to slide there. In addition, the sliders 3 have tapped holes 11 which are offset with respect to the projections of coupling 4 From this

  made the slides 3 can be placed in the grooves

  radial res 6 differently with regard to position

  radial coupling projections 4 so that

  these are either radially outside the ta-

  threaded 11, ie radially inside the threaded hole 11 Thus the coupling projections 4 can, under the same conditions of possible sliding of the slides

  3 in the radial direction, be adjusted according to different

  those of larger radius On the rear frontal side, where is

  that is to say on the side opposite to the radial grooves 6, of the coupling disc 1 the screws 8 are brought to pass through the openings 7 and screwed into the tapped holes 11 of the

  different sliders 3 in order to fix these To receive

  see screw heads 9 are provided, in the front

  rear of the coupling disc 1, recesses 12 extend

  tending radially which are located respectively on the

  same polar radii as the radial grooves 6 The li-

  moths inside which the different slides

  3 can be moved radially in the grooves

  dials 6 are determined by the length of the slit-shaped openings 7 In order to allow obtaining between the

  coupling tube 2 and the coupling disc a link

  its prohibiting any rotation and nevertheless easily amo-

  visible the coupling disc has two diametrically opposite engagement holes 13 which are arranged in

  nièrd uniformly off-center with respect to axis 14 and used

  wind to receive coupling rods 15, which are fixedly mounted inside a flange 16 of the coupling tube 2 in blind holes 17 and protrude axially outside the front surface of the flange 16 from a distance approximately equal to half of

  the thickness of the coupling disc 1 The coupling tube

  ment 2 has a through central bore 18 which pre-

  feels at the level of the flange 16 a radial enlargement 19.

  At its upper end the coupling tube 2 is moved

  nor of a hexagon 20 serving as a key profile The coupling disc 1 and the coupling tube 2 can at any

  moment be easily separated from each other and also

  ment, as shown in Figure 1, connected

  to each other The possibility of separating them is necessary

  re to allow the screws 8, by means of which the

  scissors 3 are fixed in the radial grooves 6, to be accessible. The coupling discs 1/1 and 1/2 shown

  respectively in FIGS. 4, 7, 10 and 13 are distinguished

  all of the coupling disc 1 shown in FIGS. 1, 2 and 3 by the fact that they each have in the rear front face a diametrical coupling groove 21 extending over the entire diameter and provided in place of the engagement holes 13 As a result, the

  flange 16 of the coupling tube 2/1 shown in the figure

  gure 13 is provided on its front side with two ribs

  coupling 22 which, projecting axially and

  placed diametrically, engage in an adjusted manner in

  the coupling groove 21 and make it possible to produce

  be the 2/1 coupling tube and the coupling discs

  1/1 or 1/2 each time, with regard to the movements

  rotational elements, an easily removable form link

  ble While the coupling disc 1/2, as the dis-

  than coupling 1, present on its front side four

  radial grooves 6 offset from each other

  very 900 with openings in the form of slots 7, the coupling disc 1/1 has only three radial grooves 6 offset from one another by 1200

  with slot-shaped openings 7 in each of the

  which a slide 3 is placed in such a way that

  its coupling projection 4 is located radially inside

  laughing of the tapped hole 11 In this position where the sail-

  coupling legs 4 are each located on a radius Rl the coupling disc is able to engage with a threaded cap 23 shown in top view in Figure 5 and which has at its periphery three recesses 24 offset by one compared to others from 1200 and in

  which engage in an adjusted manner the projections of

coupling 4 of the slides 3.

  The coupling disc 1/2 shown in the fig-

  re 7 is fitted with slides 3/1 which each have, instead of a rectangular coupling projection 4, a cylindrical coupling projection 4/1 but which for the

  rest are made in the same way as the slides 3.

  These 3/1 slides are designed for a tapped cover

  25 which has in its front face four holes 26 if-

  killed on a common radius R 2 and offset from each other by 900 Consequently, the 3/1 slides are

  in turn arranged in the grooves 6 of the ac disc

  1/2 coupling in such a way that the coupling projections

  cylindrical 4/1 are each located on the radius R 2.

  Figure 12 shows a threaded cap 27 pre-

  feeling instead of the recesses 24 or holes 26 a six-

  hollow sides 28 So that such a threaded cap can also be screwed to the unscrewed by means of the device described above, a key disc 29 is provided in addition to the slides 3 and 3/1. which has a central bore 30 and has on one of its front faces a hexagon profile 31 making

  protrudes axially and on its other front face a ner-

  profiled frame 32 extending over the entire diameter and capable of being introduced in an adjusted fashion into two diametrically opposed radial grooves 6 of one of the coupling discs 1 or 1/2 For centering purposes

  in bore 5 of the coupling disc 1 or 1/2 the dis-

  that key 29 is further provided with a centering ring 33

  whose outside diameter corresponds to the diameter of the

  sage 5 In order to be able to be fixed to the coupling disc 1 or 1/2, the key disc 29 has two tapped holes 34 in which screws 8, normally used for fixing the slides 3 and 3/1, can be screwed of

analogously.

  Figure 14 shows yet another ac disc.

  1/3 coupling which has a total of six radial grooves

  6 of which four of them present in relation

  port to the others an angular distance of 90 and three of them present in relation to each other

  an angular distance of 1200 In this coupling disc-

  1/3 are found practically combined the ac-

  1/1 coupling of figure 4 and the coupling disc

  1/2 of figures 7, 10 and 13 As well as the ac-

  coupling 1, this coupling disc 1/3 also has

  two diametrically opposite engagement holes 13 and a central bore 5 In its non-visible rear end face the 1/3 coupling disc also has recesses 12 which serve to receive the screw heads 9 when the screw 8 through the openings

  7 for the attachment of 3 or 3/1 slides or the

  that with a key 29 FIG. 15 schematically represents a suspension strut 35 provided with an axle stub 36, a spring cup 37 and a strut sleeve

  suspension 38 dahs which is the cylinder of a shock absorber

  weaver and which is closed at its upper end by

a tapped cap 39.

  In case of use of the described device, for example-

  full fear unscrew the threaded cap 39 from the jam sleeve

  be suspension 38, the coupling disc 1 or 1 / i or 1/2 or 1/3 fitted with the appropriate slides 3 or 3/1 or

  of the key disc 29 is first placed on this ta-

  threaded and engaged therein in form connection Then the coupling tube 2 or 2/1 is engaged on the coupling disc by passing it over the piston rod 40 of the damper, moreover invisible and is put in engagement with the 1/1 or 1/2 coupling disc The key profile 20 can then be operated either with a

  tightening, either with an impact screwdriver.

1 1

Claims (7)

  1 Device for tightening and loosening screw connections of suspension struts, in particular threaded caps fitted to sleeves of suspension struts of motor vehicles and which at their peripheral surface and / or in their front face have recesses for coupling projections, characterized by a coupling disc (1, 1/1, 1/2, 1/3) having a central bore (5) and in at least one of its front faces at least three radial grooves (6) with slot-shaped openings (7) in which sliders (3, 3/1) provided with coupling projections (4, 4/1) are fixed   by means of screws (8) so that they can be moved radially   Lely and changed, said coupling disc (1, 1/1, 1/2 1/3) having in its other front face recesses in the form of a diametrically extending coupling groove or engagement holes (13) arranged eccentrically, as well as by a coupling tube (2, 2/1) provided at one end with a key profile (20) and which at its other end has a flange mating   (16) provided with ribs (22) or rods (15) making sail-   frontally which are diametrically opposite with respect   port to the axis (14) of the coupling tube and engage   way adjusted respectively in the coupling groove- ment (21) or the holes (13).   2 Device for tightening and loosening screw connections of suspension struts, in particular threaded caps fitted to suspension strut sleeves and having a central hexagon socket serving as a key profile, according to claim 1, characterized by a disc key (29) drilled centrally which has on one of its   front faces a hexagon profile projecting axially   Lely and on its other front face at least one projection in the form of a rib or the like (32) engaging so   fitted in a radial groove (6) of the coupling disc- ment (1, 1/1, 1/2, 1/3).   3 Device according to claim 2, characterized   in that the key disc (29) has on its front face   opposite to the hexagon profile (31) a centering ring (33) fittingly fits into the central bore   (5) of the coupling disc (1, 1/1, 1/2, 1/3).   4 Device according to claim 1, characterized   in that the coupling disc (1, 1/1, 1/2, 1/3) pre-   feels in its front face opposite to the radial grooves   (6) recesses (12) extending radially in the-   which of the screw heads (9) can be housed so as to be   submerged and which are each located on the same radii po-   than the radial grooves (6) provided on the face opposite frontal.   5 Device according to claim 1, characterized in that the coupling disc (1/3) has on one of its front faces in total six radial grooves (6) among which four radial grooves (6) have between them a angular distance of 90 and three grooves   radial (6) an angular distance of 1200.   6 Device according to claim 1, characterized   in that at least three slides (3) are provided to sail-   rectangular coupling link (4) and at least three   scissors (3/1) with cylindrical coupling member (4/1) intended to be fixed as desired in the radial grooves   (6) of the coupling disc (1, 1/1, 1/2, 1/3).   7 Device according to claim 1 or 5, character-   in that the sliders (3, 3/1) have   threaded holes (11) which are offset in each case   port to coupling projections (4, 4/1).