Abstract:
An actuator for a vehicle door lock has an exterior handle with a flap and an inner support on which the flap is pivotally supported. The flap has stays with connecting points penetrating an opening in the vehicle door. A first connecting point has a pivot pin and a pivot seat. When inserting the pivot pin into the pivot seat, the handle is in an angular position relative to its final fastening position. The pivot seat has an inner shoulder engaged by a radial projection of the pivot pin for axially securing the pivot pin. The second connecting point has a first part on the handle and a second part on the flap. The handle is rotated back from the angular position until the first and second parts of the second connecting point are radially aligned. They are then connected to one another and the final fastening position of the handle is determined.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     In the past, the mounting of an actuating device with a hinged handle in the door was cumbersome and unsatisfactory. Such devices are comprised of at least three components, i.e., a support arranged at the inner side of the door with a bearing axis which extends substantially parallel to the door plane, a hinged flap connected thereto, and a handle which is arranged on the outer side of the door. After having been fastened, the handle and the flap form a single component so as to pivot together. 
     2. Description of the Relevant Art 
     In a first known actuating device the handle and the flap were formed together as a monolithic part and a portion of the outer sheet metal of the door, having a recessed depression, was integrated with the support. Between the upper longitudinal edge of the handle and the flap an angled strip was located which penetrated a corresponding slot in the outer sheet metal of the door. This resulted in sealing problems relative to the adjoining areas of the outer sheet metal of the door. Moreover, the portion seated on the support had to be matched individually to the respective color of the outer sheet metal of the door which was cumbersome and incurred high storage costs for the entire color palette. 
     More favorable with respect to sealing is an actuation device of the kind having a hinged handle arranged on the outer side of the door, having a support connectable at the inner side of the door behind an outer sheet metal of the door, which comprises a substantially parallel extending bearing axle relative to the door plane for a flap to be supported thereat in a pivotal way, wherein the flap has two connecting points for the two ends of the handle positioned at the outer side of the door before the outer sheet metal of the door and the flap with the handle connected thereto form a single component so as to pivot together, which, in the area of the two handle connecting points has stays which penetrate an opening in the outer sheet metal of the door. In this known actuating device, the handle with its two handle ends is connected to two stays which are fixed components of the support arranged on the inner side of the door. In this case only two penetrations in the door covering are required through which the stays are guided when mounting the device. The stay ends serve to fasten the handle wherein the two fastening locations are located on the outer side of the door not only in the folded-out position but also in the folded-in position of the handle; they are therefore visible in a distracting way and may provide a reason for manipulations by unauthorized persons. In the known device the fastening means were two threaded screws which each connect a flap pair between the stay on the flap, on the one hand, and the end of the handle, on the other hand. Moreover, the fastening of the handle on the flap was time-consuming and cumbersome. 
     SUMMARY OF THE INVENTION 
     The invention has the object to develop a reliable device of the aforementioned kind which can be mounted and demounted quickly and easily. This is achieved according to the invention in that the first connecting point provided on the first stay is comprised a rotary bearing comprised of a pivot pin and a pivot seat, whose pivot axis extends substantially perpendicularly to the door plane and thus determines an insertion direction of the pivot pin into the pivot seat oriented in the same direction, wherein during insertion of the pivot pin into the pivot seat the handle is rotated about an angle relative to its final fastening position on the flap; in that on the free end of the pivot pin at least one radial projection is provided having correlated therewith an opening at the pivot seat and the opening allows passage of the projection during insertion of the pivot pin, in that the pivot seat, viewed in the insertion direction, has behind the opening an inner shoulder extending transversely thereto, which is engaged from behind by the projection of the inserted pivot pin and then makes the rotary bearing between the handle and the flap axially non-detachable; in that the second connecting point provided on the second stay is comprised of two parts of which one part belongs to the handle and the other part belongs to the flap, and the handle is rotatable on the outer side of the door in the rotary bearing of its first connecting point to such an extent that the two parts of the second connecting point will become radially aligned with one another, and in that then the two aligned parts of the second connecting point are connected to one another and determine the final fastening position of the handle on the flap. 
     According to the invention, the first connecting point between the handle and the flap is provided on the first stay and is formed by a pivot pin and a pivot seat which can be coupled to one another by insertion. In the coupled situation they determine a rotational axis which extends perpendicularly to the plane of the door. This results in an especially simple mounting of the handle. 
     First the flap is supported in a pivotable way on the bearing axle provided on the support and this component is mounted on the inner side of the door. Subsequently, the flap is transferred into the folded-out position in which the connecting points provided on the flap are aligned with the two openings in the outer sheet metal of the door. Through one of the openings the aforementioned coupling between the pivot pin and the pivot seat on the first stay is realized. Subsequently, the handle on the outer side of the door must only be rotated about an angle until the two stay parts provided at the second connecting point are radially aligned with their fastening points. The two aligned fastening points must then only be connected to one another by suitable fastening means in order to secure the handle in the final fastening position on the flap. The fastening means on the second stay can be easily actuated in the folded-out position of the support from the outer side of the door. In the folded-in position of the component comprised of the handle and the flap they are invisible. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Further measures and advantages of the invention result from the dependent claims, the following description, and the drawings. In the drawings the invention is illustrated in several embodiments. It is shown in: 
     FIG. 1 the plan view onto the support of the device according to the invention with the flap supported thereat in a hinged way before a special handle/stay combination is fastened on the flap; 
     FIG. 2 the inside view of the combination to be fastened on the component of FIG. 1; 
     FIG. 3 portions of the flap, partially in horizontal section, supported in a hinged way on the support on an outer sheet metal of the door and the plan view onto the combination, already shown in FIG. 2, before its attachment on the support; 
     FIG. 4 a cross-sectional plan view of the first connecting point between the combination and the flap along the section line IV—IV indicated in FIG. 3, during a first movement phase of a two-step adjustment movement; 
     FIG. 5 also on an enlarged scale a longitudinal section of this first connecting point along the section line V—V of FIG. 4 after the two closure halves of the adjusting connection have completed the last movement phase; 
     FIG. 6 on an enlarges scale a cross-section of the two portions of the second stay on the oppositely located handle end along the section line VI—VI of FIG. 3 when the two stay portions illustrated therein have been brought in contact with one another; 
     FIG. 7 on an enlarged scale the second fastening point between handle and flap, partially in section, along the staggered section line VII—VII of FIG. 1; 
     FIG. 8 a sectional side view of FIG. 7 in the viewing direction of VIII—VIII of FIG. 7; 
     FIG. 9 a side view of a completely mounted device, wherein the outer sheet metal of the door is indicated in a dash-dotted line and the component comprised of the handle and the flap is shown in two folded positions, i.e., in the fully folded-out position and the fully folded-in position; 
     FIG. 10 an alternative embodiment of the adjusting connection at the first connecting point in horizontal section in a sectional representation corresponding to that of FIG. 5; 
     FIG. 11 a sectional plan view onto the second adjusting connection shown in FIG. 10 along the section line IX—IX of FIG. 10, after completion of the first movement phase; 
     FIG. 12 in plan view corresponding to that of FIG. 11 the adjusting connection at the first connecting point after completion of the second movement phase; 
     FIG. 13 in a sectional view corresponding to that of FIG. 10 a third embodiment of the first connecting point; 
     FIG. 14 in analogy to FIG. 11, a sectional plan view onto the two components of the third embodiment illustrated in FIG. 13 of the connecting point along the section line XIV—XIV of FIG. 13; and 
     FIG. 15 in analogy to FIG. 12 the connection of the components of FIG. 13 after the second movement phase. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The actuating device can be divided in principle into three components  20 ,  30 ,  40  which, as can be seen in FIG. 9, are entirely or partially arranged on opposite sides of the door illustrated by the outer sheet metal  10  of the door. Firstly, there is a hinged handle  40  arranged on the outer side  13  of the door; the handle  40  is illustrated in FIG. 9 in solid lines in the folded-out position  40 ′. The handle  40  is subjected to a restoring force which has a tendency to transfer it into the folded-in position. The folded-in position of the handle  40  is not illustrated in FIG.  9 . 
     At the inner side  14  of the door, behind the outer sheet metal  10  of the door, a support  20  is mounted which for this purpose has suitable fastening locations  28 ,  29  shown in FIG.  1  and in FIG. 3, showing fastening location  29  at the end  20 ′. The support  20  comprises primarily bearing locations  27  for a bearing axle  26  which extends substantially parallel to the door plane, i.e., approximately in the direction of extension of the outer sheet metal  10  of the door. The bearing axle  26  can be arranged at a slant to the horizontal and serves to support a flap  30  with a pivotal supporting action for which purpose this flap has corresponding counter bearing locations  37  as can be seen in FIG.  1 . On the bearing axle  26  a torsion spring  25  is seated which acts between the support  20  and the flap  30  and provides the aforementioned restoring force for the handle  40  to be fastened on the flap  30 . In FIG. 9 the folded-out position of the flap is illustrated at  30 ′ in solid lines while the folded-in position  30  is illustrated with dash-dotted lines. After fastening of the handle  40 , the handle  40  and the flap  30  form a single component so as to pivot together. 
     As can be seen in FIGS. 2 and 3, the handle  40  according to the invention is arc-shaped and has a concave arc side  45  facing the door sheet metal  10 . The handle  40  is fastened in the area of its two arc ends  46 ,  47  to the flap  30  in a special way which will be explained in the following in more detail. After fastening, the concave arc side  45  provides an opening for a human hand relative to the door sheet metal  10 . For the folding-out movement  15  illustrated in FIG. 9, the handle  40  can be completely gripped all around by a human hand within its central arc portion  48 , illustrated in FIG. 3, like a pull handle. For fastening the handle  40 , connecting points  31 ,  41 ;  32 ,  42  at the two handle ends  46 ,  47  are provided which are positioned in the area of the two stays  21 ,  22 . These two stays  21 ,  22  penetrate two separate openings  11 ,  12  provided in the outer sheet metal  10  of the door. These two connecting points  31 ,  34 ;  32 ,  42  are very differently designed and are used not simultaneously, but sequentially, during mounting of the handle  40  on the support. 
     As can be seen in FIG. 3, the first stay  21  provided on one handle end  46  is a monolithic component of the handle  40  and forms therewith a handle/stay combination  40 ,  21 . This combination includes also a first portion  23  of the second stay  22  shown in FIG. 7 on the oppositely positioned handle end  47 . A fixed component of the flap  30  is the second portion  24  of this second stay  22 . This second stay portion  24  forms together with the flap  30 , as can be seen in FIG. 1, a monolithic asymmetric flap component  24 ,  30 . 
     On the free end of the first stay  21  provided on the handle  40 , as can be seen in FIG. 3, a pivot pin  41  is provided which is a part of the first connecting point. The other part of this connecting point is the pivot seat  31  provided within the support. For mounting the handle, the flap  30  is transferred into its folded-out position which can be present in FIG.  3 . Subsequently, the handle  40  is guided, from the outer side  13  of the door, with its pivot pin  41  through the aforementioned first opening  11  in the outer sheet metal  10  of the door and is inserted into the pivot seat  31  of the flap  30  in the direction of arrow  16  illustrated in FIGS. 3 and 5. This insertion movement  16  requires the handle  40  to be in a certain angular position  17  which is illustrated in FIG. 1 by a dash-dotted line. This is so because the pivot seat  31  and pivot pin  41  are also formed as the two closing halves  51 ,  52 , which are complementary to one another, of an adjusting connection  50  whose configuration and function can be taken from FIGS. 4 and 5. 
     In the present case, one of the closing halves of the adjusting connection  50  is comprised of two radial projections  51  which are seated diametrically to one another on the pivot pin  41 . The other closing half of the adjusting connection  50  is formed complementary to the contour of the radial projections  51  as a radially widened portion  52  of the pivot seat  31 . Only when the handle  40  with the stay  21  formed thereon is positioned in the afore described angular position  17  illustrated in FIG. 1 are the two closing halves  51 ,  52  of the adjusting connection  50  in axial and radial alignment and allow the aforementioned insertion movement  16  of the pivot pin  41  into the pivot seat  31 . The magnitude of the insertion movement  16  can be limited by a collar  49  or collar segments on the stay  21 . In the stop position of the collar  49  the radial projections  51 , when viewed axially, are positioned behind the inner shoulder  34  of the flap  30 . The insertion movement  16  is the first movement phase of a two-stay adjusting movement. After the insertion movement  16  a rotational phase  18  of the adjusting movement is carried out which is illustrated in FIG. 4 as well as in FIG.  1 . This has two consequences. 
     Upon rotation  18  of the handle, as can bee seen best in FIGS. 4 and 5, the radial projection  51  glides with its axial edge behind the inner shoulder  34  and thus locks the coupling position of the pivot pin  41  in its pivot seat  31 . When performing this rotational movement, a first connecting point  31 ,  32  produces a rotational axis  35  for the second movement phase  18  of the handle  40 . This rotational axis  35  extends substantially perpendicularly to the door plane  36  which is also illustrated in FIG. 3 as a dash-dotted line. This door plane  36  is determined by the extension direction of the outer sheet metal  10  of the door. At the end of the rotational movement  18  the door handle is positioned in a substantially horizontal final fastening position which is illustrated in FIG. 1 by the horizontal dash-dotted line  19 . In the locked position  51 ′, illustrated in a dash-dotted line in FIG.  4  and in a solid line in FIG. 5, a pulling-out movement  16 ′ of the pivot pin  41  from the pivot seat  31  counter to the insertion movement  16  is prevented according to FIG.  5 . The two closing halves  51 ,  52  on the pivot seat  31  and the pivot pin  41  of the first connecting point between the flap  30  and the handle  40  thus produce at the same time the fastening means which ensure a connection of the two components  30 ,  40  at this location. 
     The rotational movement  18  also has a further consequence in that the two parts of the second connecting point  32 ,  42  are automatically aligned with one another when the handle  40  with its other handle end  47  has reached the afore described fastening position  19 . This is determined first by rotational stops  38 ,  39 . The rotational stops  38 , 39  are provided in the edge areas of the two stay portions  23 ,  24  of the second stay  22 . A further peculiarity is to be considered in this connection. 
     The contact position of the two stay portions  23 ,  24  illustrated in FIG. 6 is moreover temporarily secured by a catch holder  60 . This catch holder  60  comprises a catch projection  61  provided in the edge area of the two stay portions  23 ,  24  on the one stay portion  23  and an undercut catch depression  62  on the other stay portion  24 . In the end phase of the rotational movement, illustrated in FIG. 6 also by the arrow  18 , the catch projection  61  snaps into the catch depression  62  and thus secures the handle  40  temporarily in its desired fastening position  19 . This is then finally secured by fastening means of the second connecting point  32 ,  42 , which is achieved in the following way. 
     The two fastening means for the second connecting point  32 ,  42  are integrated into the two stay portions  23 ,  24  and, in the contact position of FIGS. 6,  7 , and  8 , they are automatically radially aligned relative to one another. They can, especially when the catch holder  60  is effective, immediately become connecting-active without having to align the handle  40  in any special way. These two parts of the second connecting point  32 ,  42  are comprised, on the side of the handle  40 , of screw elements  42 , i.e., in the present case of a threaded bolt  43  integrated into the corresponding stay portion  23  and of a nut  44  which can be threaded thereon. The other part of the second connecting point  32 ,  42  is comprised of a screw element receiver which is formed in this case as a slot  32  open at one end. During the aforementioned rotation  18  the flap is always in the folded-out position  30 ′ illustrated in FIG. 9 so that the second stay portion  24  seated hereon can reach with the slot  32  the outer side  13  of the door. Subsequently, the bolt  43  is guided with the aid of the guiding action of the rotational axis  35  at the first connecting point  31 ,  41  reliably through the slot opening  33  into the slot  32 . Then it is only required to tighten the nut  44  against the shoulder surface  54  illustrated in FIGS. 7 and 8. Now the handle  40  is secured in its final fastening position according to the dash-dotted line  19  of FIG.  1 . 
     In the folding-out movement  15  of FIG. 9 already mentioned several times, the component comprised of the handle  40  and flap  30  moves together. It is transferred into the folded-out position  40 ′,  30 ′. 
     A working arm  55  is fixedly connected to this component which is transferable from the rest position, illustrated by a dash-dotted line in FIG. 9, into the working position  55 ′, illustrated in solid lines. On this working arm  55  a lock linkage which extends to a door lock, not shown, is connected which extends, for example, in the direction of arrow  56  of FIG.  9 . The folding-out movement  15  thus also transfers the door lock from the rest position into a working position. 
     After completion of the fastening at the connecting point  32 ,  42  the component comprised of flap  30  and the handle  40  can then be returned into the folded-in position illustrated in a dash-dotted line in FIG.  9 . For this purpose the aforementioned return spring  25  is provided. Now the end surfaces on the two handle ends  46 ,  47  shown in FIGS. 2 and 3 close off completely or partially the two openings  11 ,  12  in the outer sheet metal  10  of the door, wherein rubber seals or the like are being used for sealing relative to the door sheet metal  10 . Usually, the second opening  12 , as illustrated in FIG. 3, is greater in order to be able to receive in addition to the handle  40  other functional members  58 ,  59  which are illustrated in dashed lines in FIG.  3 . Accordingly, in addition to the component of the handle  40  and the flap  30 , there is a mounting array  53 , shown in FIG. 1, for additional functional members  58 ,  59  which then cover the entire opening  12 . These functional members include the closing cylinder component  58  which acts by key actuation also onto the door lock. This closing cylinder component  58  is seated in a styling cap  59  which extends the contour of the handle  40  positioned in the folded-in position. Both functional members  58 ,  59  are mounted from the inner side  14  of the door on the outer sheet metal  10  of the door and close then also the remainder of the second opening  12 . Especially, these functional members  58 ,  59  cover the access to the second connecting point  32 ,  42 . In the folded-in position of the component  30  of FIG. 9 this connecting point is actually located on the inner side  14  of the door. Accordingly, unauthorized persons can therefore not easily demount the handle  40  from the outer side  13  of the door. However, this is possible for an authorized person which has access by a key to the inner side  14  of the door. 
     In FIGS. 10 through 12 a first alternative embodiment of the components at the first connecting point is illustrated in a schematic manner. For referencing same components the same reference numerals as in the first embodiment of FIGS. 1 through 9 are used so that in this connection the aforementioned description is applicable. It is sufficient to point out only the differences. 
     These reside in that the pivot pin  41  has a projection in the form of a pin head  57  of radial symmetry, radially projecting on all sides, on the first stay  21  belonging to the handle  40 . An opening  63 ,  64  with a key hole-like opening profile is correlated with this pivot pin  41 . It is comprised of a narrow opening area  63  and a wide opening area  64 . The wide opening area  64  is greater than the profile of the pin head  57 . Accordingly, the aforementioned insertion movement in the direction of arrow  66  of FIG. 10 can be carried out without problems. Accordingly, the pin head  57  with its shoulder surface facing the pivot pin  41  will reach an inner shoulder  34  provided on the flap  30  which shoulder extends transverse to the direction of the insertion movement  66 . This insertion position is illustrated in FIGS. 10 and 11. In the present case, guiding means can ensure a defined angular position of the handle  40  for the insertion movement, for example, so that the handle  40 , for example, is positioned in the angular position illustrated in FIG. 11 by the dashed-dotted line  67 . Such guide means can be arranged between the handle, on the one hand, and the support or the flap  30 , on the other hand. As an alternative, it is also possible to provide for this purpose outer contours on the opening profile  64  and the pin head  57 . 
     After the insertion movement of FIGS. 10 and 11 a displacement phase of the component  40  in the direction of arrow  65  of FIG. 11 follows. Accordingly, the pivot pin  41  reaches the aforementioned narrow opening area  63  of the opening profile, as is illustrated in FIG.  12 . This narrow opening area  63  forms then the pivot seat for the rotational movement following thereafter and illustrated by the arrow  68  in FIG.  12 . This movement guides the handle  40  again into the fastening position  69  on the flap  30  illustrated by the auxiliary line  69  in FIG. 12 where the slot  32  and the screw element  42  of the second connecting point mentioned in connection with the previous embodiment will become effective. Upon rotation  68  the rotational axis  35  between the handle  40  and the flap  30  is again active which axis is illustrated in FIG.  10 . 
     While in the first embodiment of FIGS. 1 through 9 the first connecting point  31 ,  41  represents a rotational adjusting connection, in the second embodiment of FIGS. 10 through 12 one could speak of a displacement adjusting connection at the connecting point of the pivot pin  41  and the narrow opening area  63 , based on the second movement phase characterized by the displacement movement  65 . 
     A third variant of the invention is illustrated in FIGS. 13 through 15 which can be derived from the adjusting connection of the second embodiment of FIGS. 10 through 12. The FIGS. 13 through 15 describe the analog conditions which have been previously explained in connection with the second embodiment of FIGS. 10 through 12. In order to avoid repetition, reference is being had to the preceding embodiments. It is sufficient to only describe the differences of this third embodiment relative to the preceding ones. 
     This third embodiment results when the component of the first embodiment according to FIGS. 10 through 12 belonging to the flap  30  is cut away so that then the wide opening area  64  is eliminated in the third embodiment. The flap  30  comprises a fork  70  formed between two fork legs  72 . The free space  74  positioned before the fork opening  73  provides an passage in order to perform here the aforementioned insertion movement  66  of the pivot pin  41 . This is illustrated in FIGS. 13 and 14. Subsequently, a displacement movement  65  is again performed so that the pin head  57  will move into the fork opening  70  and reach the fork bottom  71 . The fork bottom  71  provides the pivot seat for the pivot pin  41  according to FIG.  15 . Here the pivot axis  35  illustrated in FIG. 13 is again formed for the rotational movement  68  illustrated in FIG. 5 into the final fastening position  69  of the handle  40 . 
     List of Reference Numerals 
       10  door sheet metal 
       11  first opening 
       12  second opening 
       13  outer side of door 
       14  inner side of door 
       15  part of the folding-out movement (FIG. 9) 
       16  arrow of the insertion movement of  41  into  31   
       16 ′ pulling-out movement of  41  from  31  (FIG. 5) 
       17  auxiliary line for angular position of  40  (FIG. 1) 
       18  arrow of the rotational movement of  40  (FIGS. 1,  4 ) 
       19  auxiliary line of the final fastening position of  40  (FIG. 1 
       20  support 
       21  first stay on  40   
       22  second stay 
       23  first portion of  22  on  40   
       24  second portion of  22  on  30   
       25  torsion spring, return spring for  40   
       26  bearing axle of  20  for  30   
       27  bearing location 
       28  first connecting point of  20  on  10   
       29  second connecting point of  20  on  10   
       30  flap (folded-in position) 
       30 ′ folded-out position of  30   
       31  part of first connecting point, pivot seat 
       32  part of second connecting point, screw receiver, slot 
       33  slot opening of  32   
       34  inner shoulder on  30  (FIG. 5) 
       35  rotational axis of  31 ,  41  (FIG. 5) 
       36  auxiliary line of the door plane (FIG. 3) 
       37  counter bearing location for  26   
       38  first rotational stop on  30  at  24   
       39  second rotational stop on  40  at  23   
       40  handle (folded-in position) 
       40 ′ folded-out position of  40   
       41  portion of first connecting point, pivot pin 
       42  portion of the second connecting point, screw element 
       43  threaded bolt of  42   
       44  nut of  42  on  43   
       45  concave arc side of  40   
       46  first handle end of  40   
       47  second handle end of  40   
       48  central arc portion of  40   
       49  collar on  21 , collar segment (FIG. 5) 
       50  adjusting connection between  31 ,  41   
       51  first closure half of  40 , radial projection 
       51 ′ locked position of  51  (FIGS. 4,  5 ) 
       52  other closing half of  50 , radially widened portion of  31 , opening for  51   
       53  mounting array (FIG. 1) 
       54  shoulder surface on  24  for  44  (FIG. 7) 
       55  working arm on  30  (rest position) 
       55 ′ working position of  55  (FIG. 9) 
       56  arrow of the lock linkage 
       57  pin head (FIGS. 10,  13 ) 
       58  functional member, closing cylinder component 
       59  functional member, styling cap 
       60  catch holder between  23 ,  24  (FIG. 6) 
       61  catch projection of  30   
       62  catch depression of  30   
       63  profiled opening narrow opening area (FIG. 11) 
       64  profiled opening (wide opening area) 
       65  arrow of sliding movement of  41  (FIG. 11) 
       66  arrow of insertion movement of  41  (FIG. 10) 
       67  auxiliary line of angular position of  40  (FIG. 11) 
       68  arrow of the rotational movement of  40  (FIG. 12) 
       69  auxiliary line of the final fastening position of  40   
       70  fork opening (FIG. 14) 
       71  fork bottom of  70 , pivot seat for  41   
       72  fork legs of  70   
       73  fork opening of  70   
       74  free space before  73