FR2556680A1 - FOLDING STROLLER - Google Patents

Abstract

THE STROLLER HAS A FRAME 2 INCLUDING: -TWO FIRST SIDE UPRIGHTS 3 ARTICULATED WITH TWO SECOND SIDE UPRIGHTS 15; -TWO FIRST BARS 37 ARTICULATED BETWEEN THEM AND CONNECTING THE LOWER PORTIONS OF THE FIRST UPRIGHTS 3; -Two SECOND BARS 23 ARRANGED IN A CROSS AND CONNECTING THE LOWER PORTIONS OF THE SECOND AMOUNTS 15 TO INTERMEDIATE PORTIONS OF THE FIRST AMOUNTS 3; -TWO THIRD BARS 44 AND 48 ARTICULATED BETWEEN THEM AND CONNECTING THE POINT OF HINGE BETWEEN THE FIRST BARS 37 TO THE POINT OF HINGE BETWEEN THE SECOND BARS 23; AND A THIRD UPRIGHT 72 MOBILE AXIALLY TO ALLOW TO REDUCE THE OPENING OF THE FRAME 2 AND WITH A LOWER END ARTICULATED AT THE POINT OF ARTICULATION BETWEEN THE THIRD BARS 44 AND 48.

Description

Folding stroller.

  The present invention relates to a folding stroller.

  The object of the invention is to provide a stroller comprising a frame which bends in a simple manner to reduce the bulk during transport of the

  stroller and whose production cost is reduced.

  This object is achieved according to the invention by means of a

  sette comprising a folding frame so as to re-

  its bulk, characterized in that the ossa-

  comprising: first two metallic uprights parallel to each other formfna-t in use position an acute angle with the

  support plan, each with one end

  carrying at least one anterior wheel;

  two second metallic amounts parallel to one another

  forming an acute angle with the support plane, associated respectively with the first uprights, and each having an upper end supporting at least

  a rear wheel and an articulated upper

  on a first trunnion on which is articulated, by an intermediate portion, the first ascending amount; first two metal bars, one for each

  first two amounts, to bring them together,

  each with a first end articulated in a

  lower portion of the first associated amount, the

  ends of said first bars being

  directly between them or articulated to a first

  first intermediate body; two second metal bars arranged in a cross and

  articulated in their central part on a second

  each of them with an inferior end

  upper articulated on a lower portion of one of the second amounts associated with one of the first uprights and an upper end articulated on a third

  trunnion supported by a first sleeve

  smooth along the other of the first amounts; two third metal bars, the first of which has a first end hinged to the point of articulation of the second ends of the first bars or to the first intermediate body and a second end articulated directly or via

  from a second intermediate body to a first

  on the other of the third bars, which

  a second end articulated to the second trunnion; a third axially slidable post and having an upper end that can be grasped by the user and a lower end hinged directly on the point of articulation common to the

  third bars, ie on a fourth

  carried by the second intermediate body; a first structure supporting a folding-type backrest on itself of a seat; and a second structure supporting the folding-type base wall

on itself of said seat.

  Other features will emerge from the description

  detailed illustration given below by way of illustration and not limitation, and the accompanying drawings, in which:

  FIGS. 1 and 2 are respectively views of

  side of a stroller according to the invention;

  FIGS. 3 and 4 are views similar to FIGS.

  res 1 and 2 taken during the bending of the frame; - Figures 5 and 6 are respectively front and side views of a detail of the stroller; and - Figure 7 is a sectional view of the detail of the

figure 6.

  In Figures 1 and 2, reference numeral 1 denotes a

  stroller having a folding frame 2 which

  takes two metal uprights 3 parallel to each other and forming an acute angle with the support plane. Each

  amount 3 is hollow internally and has an

  lower trem 4 folded so as to have its axis substantially parallel to the support plane. This

  end is housed inside a sleeve 5 to

  firing of which extends down a body 6 whose lextren

  The lower half is fixed to a hub 7. Two front wheels

  8 are mounted crazy on the long ends

  of the hub 7. The amount 3 has one end

  upper mite housed inside a sleeve 11 which supports a lever 12 whose actuation moves an unillustrated pin. This pin penetrates into use inside the upright 3 and will engage in a hole of a second sleeve 13 (shown in a line

  interrelated in Figure 2) with a lower portion of

  re is inside the amount 3. The amount 13 presents

  an upper end housed in the lower portion

  of a handle 14. By means of the lever 12, it is possible to extract the trunnion of the sleeve 3 so as to

  to be able to move the amount 13 inside the

  so 3, the amount 13 having a plurality of holes each of which can receive the pin. In this way, the user can move the handles to the desired height.

  The frame 2 further comprises two other amounts

  parallel to each other and forming an acute angle with the support plane. Each upright 15 has a lower end which supports a hub 16 to

  longitudinal ends of which two rear wheels

  res 17 went mad. On the lower end of each upright 15 is further mounted a lever 18 of known type. By counter-clockwise rotation of the lever 18, it is possible to block the rotation of the rear wheels 17. The lever 18 operates

  as well as a braking system. At each

  3 is associated with an amount 15, and each pair of uprights 3 and 15 has a cross conformation. More precisely, the amount 15 is articulated

  by an upper portion on a pin 21 on the-

  which is also articulated, by an intermediate portion

diaire, the amount 3 associated.

  Coam illustrated in Figs 1 and 2, 1 Iossature 2 csnprend two bars 1% all1iques 23 arranged in cross

  articulated between them in their intermediate part.

  on one wrinkle 24 which engages in two holes, one of which is located in the bar 23

  external and the other in the inner bar 23. The former

  lower tremities of the bars 23 are hinged

  each one on a stirrup 25 fixed aa nontant t5 correspon-

  in the vicinity of its infra-

  The upper bars of the bars 22 are each hinged to a hinged stirrup 26. turn on one

  journal 27 suppo-té by two fins 2 which is

  rearwardly of the stroller 1 from an associated sleeve 31. The latter can slide along the associated upright 3 and has on its outer edge and at its lower end a notch 32 which receives a pin 33 carried by the amount 3 The pieces 33 impiAbent the translation down of sleeves 31

  The part of the amount 3 that supports pawn 33 is

  above the portion in! aquele the amount 3 is articulated to the pin 21. The maximum opening of the cross defined by the bars 23 is determined by the cooperation between the notches 32 of the sleeves 31 and the pins 33. The minimum opening of this cross is determined by the minimum distance in: 3 ssants 3 when the stroller I or better its ossat-r 2 is folded so as to present a congestion r.uio

  Eur each amount 3, at the end of its end

  0 has been attached a sleeve 3.5 from this stretch

  to another mountain: a body 36 on which is

  The first end of each of the two bars 37 is connected to a corresponding spigot 38 supported by the central body 4 of the above-mentioned standard. U-shaped

255668.

  overturned and receiving, in its interior space,

  second ends of the bars 37.

  From the body 41 extend upwards two

  42 which support a pin 43 on which is

  articulated a first end of a metal bar

  44 which a second end is articulated on a pin 45 supported by a body 46 similar to the

  41. The body 46 also supports a second

  rillon 47 on which is articulated a first

  mite of a metal bar 48, a second

  mité is articulated on a pin 51 supported by a stirrup 52 fixed to the trunnion 24 of the croi defined by the bars 23. The assembly formed by the bars 44 and 48 connects the body 41 to the cross defined by the bars

  23. At the trunnion 24 is fixed a square 54 which is

  downwards and to which are attached the first

  ends of two springs 55 whose second ends are fixed to the longitudinal ends of the pin 45. More particularly, the springs 55 are arranged on the sides of the body 46 and are intended to maintain the assembly formed by the bars 44 and 48

  and the body 46 in the position illustrated in FIG.

  2. Each bar 37 supports in a portion

  intermediate a bracket 56 which supports a pin 57 on which is articulated a first end of a metal bar 58. Each bar 58 connects the bar 37

  associated with the amount close to it. More precise

  the second end of the bar 58 is articu-

  to a pin 61 supported by a stirrup 62

  on a trunnion 63 on which is also articulated

  the upper end of the upright 15.

  The stroller 1 further comprises an illustrated seat having a back, a base wall and two side walls. Both the backrest and the base wall are made to be foldable on themselves. The seat back is supported by a metal structure

  network 65 comprising two rectilinear lateral elements

  66 substantially parallel to the amounts 3 and

  two rectilinear elements 67 arranged in a cross and

  abutted by means of an unillustrated spigot. The lateral elements 66 each present

  a lower portion articulated to the journal 27 asso-

  and an upper portion on which is

  abutting a first end of a third rectilinear element 68. On the trunnion 27 of an element 66 is

  articulated the lower end of the associated element 67

  key, whose upper end is articulated on a

  intermediate zone of element 68 connected to the other element

  66. The second ends of the elements 68 are hinged together. The trunnion which defines the cross arrangement of the elements 67 supports a stirrup 71 which constitutes a guide for a metal upright 72 having a lower end articulated on a trunnion 73 supported by two fins 74 extending upwards from the body 46. The amount 72

  has an upper end 75 folded and recou-

  green by a sleeve 76 adapted to form a handle to translate upwardly of the upright 72 when it comes to reduce the size of the frame 2. The base wall of the seat is supported by two straight metal elements 77 parallels

  between them and substantially parallel, using

  the support plan. The elements 77 are arranged

  on the sides of the base wall of the seat and

  an arirte end attached to the trunnion 27, a

  fixed central portion to the tower 63, and an end

  front tee which supports a Courillon 78 on which is articulated a first end of a metal bar 81 advantageously curved so as to have a concavity facing upwards. The two bars 81

  support, not illustrated, a plate

  feet, since the lower end of each element 66 extends downward an appendix 82 on which is

  articulated a rear end of a metallic element

  that rectilinear 83 parallel to and placed below

  the corresponding element77. The front end of the

  element 83 is articulated on an upper portion of

  the associated bar 81. The elements 83 operate

  connecting the structure 65 supporting the backrest bars 81 supporting the footrest so that, during the folding of the frame 2 (as discussed below), the bars 81 are recalled to the bars 58, which rotate them clockwise. In use, if the backrest is tilting, the connection between the structure 65 and the bars 81 allows these

  past to follow the variable orientation of this

  sier. The elements 77 further support the side walls of the seat. On a lower portion of one of the uprights 15 is fixed a body 85 which, as will be seen better in the following, facilitates the operations of

folding of the frame 2.

  Referring to Figures 3 and 4, we will now describe

  In order to achieve a reduction of space by folding the frame 2. Putting a foot on the body 85, the user pulls upwards, by means of the sleeve 76, the upright 72. The translation upwards of this amount 72 occurs against the action of the springs 55 and causes the upward movement of the body 46 and also, through the bar

  44, the upward movement of the body 41.

  concludes the mutual rapprochement of the amounts

  also refers to the mutual approximation of the amounts 15.

  The effect of all this is the folding on themselves of both the backrest and the base wall of the seat, the mutual approximation of both elements 66 of the structure 65 which supports the backrest elements 77 that support the wall of the seat. base.In addition, the bars

  81, which rotate clockwise and are thus

  to the bars 58 because of the inclination forward of the structure 65, are also close to one another, When folding the frame 22,

  the sleeves 31 move upwards. The fold-

  finished, a wafer or ribbon may fix

  between them the uprights 3 or the journals 27. For

  put the stroller 1 in the use position, it can be seen the action of the springs 55 by pushing down the amount 72 if the action of the springs 55 is not sufficient. These tend

  to return to the position of use (FIG.

  formed by the bars 44 and 48 and the body 46. The translation of the sleeves 31 down stops when

  these come to cooperate with the journals 33.

  As illustrated in FIGS. 5, 6 and 7, the lower end of each upright 15 is assembled one

  plate 91 shaped U-shaped and consequently having

  a central portion 92 and two portions

  the 93 parallel to each other. The plate 91 surrounds the lower end of the upright 15 inside which is housed a body 94 at the upper end.

  of which a hole 95 is formed receiving the central portion

  trolley 96 whose opposite ends extend outside the upright 15 and engage in

  respective holes 97 made at the upper ends

  side portions 93. In this way the

  plate 91 is articulated from above to the trunnion 96.

  In this embodiment, the amount 15 is taken

  but this is not a limitation of

  the present invention. The body 94 has an end.

  lower mite 98 which is outside the lower end of the upright 15 and which has dimensions greater than the section of the latter. Near the lower end 98, inside the upright 15, the body 94 has a cavity 101 coaxial with holes 102 made in the opposite walls of the upright 15. Coaxially to one of the holes 102, a hole 103 is made in the central wall 92

of the wafer 91.

  The holes 102 and 103 and the cavity 101 receive a touch

  rillon 104 having an outer end 105

  than the hole 103 and of diameter greater than that of the latter, and a second end 106 outside the hole 102 opposite the hole 103 and also having a diameter greater than that of the hole 102. Around the

  104 is wound a spring 107, a first

  the first end is internal to the cavity 101, the

  the second end of the spring 107 is in contact with a washer 108 placed thereon, the nearest of the hole 103 having a reduction in diameter so as to be traversed only by the pin 104.

  at the end 106 of the pin 104. The portions

  the 93 of the wafer 91 present down

  respective holes 111 receiving the hub 16.

  The assembly system between the upright 15 and the hub

  16 that has just been described allows an effective suspension

  this so that if the rear wheels 17 are the seat

  shaking or vibration because of the accidental

  tooth, shaking or vibration does not

  not on the amounts 15 and therefore on the

  1 but are absorbed by the springs 107. It is seen in FIG. 6 that, in such a case, the plate

  91 rotates around the trunnion 96, pushing backwards

  the pin 104 and compressing the spring 107 which absorbs shaking and vibration. The spring 107 then acts to bring the upright 15 and the plate 91 coaxial with each other. Naturally, the same system can be applied equally on the wheels

before 8.

  From the description above clearly result the

  many advantages provided by the present invention.

  In particular, the stroller 1 has a frame 2 collapsible by simple means. The folding of this framework is achieved by the simple translation upward of the upright 72, without any intervention, manipulation or pressure on the other components of the frame 2. For the return to the use position no user intervention n is necessary if the action of the springs 55 is sufficient; otherwise, a slight downward thrust of the amount 72 is sufficient. It must also be taken into account that after these operations no intervention is necessary on the stroller 1 to block the latter in the position

  final, the maintenance of this position being automatic.

  No blockage or manipulation of any component

  whether it is required for the stroller to remain

  te in the position of use.It should be noted in ou-

  that the amounts, the bars and the elements of the stroller 1 can be made with a section of the same section, resulting in a saving on the cost

  of production. Finally, the stroller 1 ensures a suspension

effective transmission of the wheels 8 and 17.

  Imodifications can be made to the stroller

  described and illustrated without departing from the scope of the invention.

  In particular, the amounts, the bars and the

  the stroller may be of rectangular section

  circular. In addition, the articulation between

  different amounts and bars can be made directly

  without interposition of stirrups. Finally, he is

  possible to articulate directly between them the bar-

37 and bars 44 and 48.

Claims (10)

Claims.   1. Stroller comprising a framework (2) collapsible so as to reduce its bulk, characterized in that the frame (2) comprises: two first metal uprights (3) parallel to each other forming in the use position an acute angle   with the support plan, and each with one   mité (4) supporting at least one front wheel (8); two second metallic uprights (15) parallel between   them, forming an acute angle with the support plane,   respectively to the first amounts (3), and   each feeling an upper end supporting the   least one rear wheel (17) and one upper portion   articulated on a first pin (21) on the-   which is articulated, by an intermediate portion, the first amount (3) associated; two first metal bars (37), one for each of the first two uprights (3), to join them, each having a first end articulated in a lower portion of the first upright (3) associated, the second ends of said first bars ( 37) being articulated directly between them or articulated to a first intermediate body (41); two second metal bars (23) arranged in a cross and articulated in their central part on a second pin (24), each of them presenting a   lower end articulated on a lower portion   one of the second amounts (15) associated with one of the   first uprights (3) and an upper end   abutment on a third pin (28), supported by a   first sleeve (31) slidable along the   be first amounts (3); two third metal bars (44 and 48), the first of which has a first end articulated to the   point of articulation of the second ends of the first   bars (37) or the first intermediate body (41) and a second end hinged directly or via a second intermediate body   (46) at one end of the other   my bars (44 and 48) having a second end hinged to the second trunnion (24); a third upright (72) slidable axially and having an upper end (75)   be entered by the user and an inferior end   articulated directly to the point of   culation common to the third bars (44 and 48), or on a fourth pin (73) supported by the second intermediate body (46); a first structure (65) supporting a folding-type backrest on itself of a seat; and a second   structure (77) supporting the rec type base wall   foldable on itself of said seat.   2. Stroller according to claim 1, characterized in that it comprises elastic means (55) whose action, in use, is to press down the joint point of articulation between the thirds   bars (44 and 48) or the second intermediate body (46).   3. Stroller according to claim 2, characterized in that the elastic means comprise at least one spring (55) whose one end is fixed to a bracket (54) supported by the second pin (24) and a second end is fixed at the joint point of articulation between the third bars   (44 and 48) or to the second intermediate body (46).   Stroller according to one of the preceding claims   are characterized in that it comprises two fourth   my bars (58) each of which presents a first   articulated end to one of the first bars (37) and   a second end articulated at the upper end   re of the second largest amount (15) nearest   of this same first bar (37).   Stroller according to one of the preceding claims   are characterized in that each of the first   tants (3) is hollow internally and houses in its internal space a lower portion of a fourth sleeve (13) associated with an upper portion is covered with a second sleeve (14) adapted to form a handle; the fourth sleeve that can move   axially to allow the user to   at will the height of this handle.   Stroller according to one of the preceding claims   characterized in that the first structure (65) supports a stirrup (71) suitable for constituting a guide   for the axial translation of the third post (72).   7. Stroller according to claim 6, characterized in that the upper end (75) of the third upright (72) is covered with a third sleeve (76) clean to form a handle.   Stroller according to one of the preceding claims   characterized in that the first structure (65) and the second structure (77) are joined together and are supported by the first uprights (3) and the second uprights (15).   Stroller according to one of the preceding claims   characterized in that at least one of the first uprights (3) and the second uprights (15)   near its lower end a fifth   rillon (96) on which is articulated the upper end   of a wafer (91), which end-lower   upper supports a hub (7, 16) supporting the wheel   anterior (8) or posterior (17); the lower end   of that first amount (3) or that second amount   (15) receiving the central portion of a sixth   axially slidable pin (104)   a longitudinal axis orthogonal to the longitudinal axis   nal of the upright, and having a first end (105) connected to said plate (91) and a second end (106) external to the upright and on which a first end of a second spring is supported   (107) wrapped around the sixth trunnion (104) and   feeling a second end located inside the amount. 10. Stroller according to claim 9, characterized in that inside the lower end of said   first amount (3) or second amount (15) is housed   xially a body (94) having a higher end   upper support the central portion of the fifth trunnion (96) and a lower end (98) located outside the lower end of the upright; this   body (94) having near its lower end   (98) a cavity (101) within which the sixth trunnion is slidable and has a diameter reduction to define a stop for the   second end of the second spring (107).