Abstract:
The invention concerns a bouncer comprising a base frame and a seat frame. In a use position the seat frame is inclined relative to the base frame. The baby bouncer further comprises a support device movably connecting the seat frame to the base frame. The support device is attached to the seat frame at one or ore respective first connection portions, and to the base frame, such that the inclination alternately increases and decreases during operation of the bouncer, and such that when the inclination of the seat frame decreases, the one or more first connection portions are moved forward relative to base frame, and vice versa.

Description:
[0001]    The present invention concerns a bouncer or bouncing cradle and a frame for such. 
       BACKGROUND OF THE INVENTION 
       [0002]    Bouncers are used for babies and small children, allowing them sit in a semi upright position to have a better overview without loading the back excessively. In addition, bouncers may be used to let a baby move in an up-and-down or bouncing movement to keep the baby content and happy, to let the baby rock safely, as well as for calming the baby such as for falling to sleep, depending on the degree, intensity and direction of the bouncing movement. 
         [0003]    The bouncing movement may be instigated by the baby itself shifting its weight within the bouncer, or by an adult gently rocking or pushing down on the bouncer. 
         [0004]    A number of bouncers have been made to let the baby train its legs by half jumping up and down. However, the movement in current bouncers does not seem to keep all babies fond and calm. 
       PRIOR ART 
       [0005]    The bouncer chairs presently on the market are mainly based on two different principles for allowing movement of the baby or small child sitting in the bouncer; namely a rocking-chair movement or a simple tilting movement. 
         [0006]    U.S. Pat. No. 6,361,106 and US 2002/063457 describe a frame for a baby rocking chair having a curved base for supporting a seat frame and obtaining a rocking movement. 
         [0007]    WO 2008/004959 describes a bouncing cradle with a backrest connected in a single pivot mounting to a base for a pivoting/tilting movement. 
         [0008]    So called “baby jumpers” for encouraging babies to use their legs are also known from prior art, such as U.S. Pat. No. 3,076,628 and U.S. Pat. No. 3,066,906 wherein a seat by parallel hinging to a base is maintained in a horizontal position while the seat moves up and down and forward and backward, while the jumper at the same time is collapsible. 
       OBJECTIVE OF THE INVENTION 
       [0009]    An objective of the invention is to provide a bouncer providing a more pleasant movement pattern for the baby, rather than only a tilting or rocking-chair movement of previous bouncers. 
         [0010]    Further, an objective of the invention is to provide a bouncer with an angle adjustment of its seat, which is simple, safe and easy to adjust in a continuous manner without collapsing the bouncer. An objective is also to provide a bouncer allowing for such angle adjustment or inclination adjustment by the use of one hand while the baby may be seated in the bouncer. An additional objective is to provide a bouncer, which may be moved and/or lifted while retaining its inclination. 
         [0011]    Another objective of the invention is to provide a bouncer wherein a seat portion may be collapsed flat onto a base frame portion for easy storage and transport. An additional objective is to provide a means for keeping the bouncer locked in its collapsed state. 
       SUMMARY OF THE INVENTION 
       [0012]    The invention concerns a bouncer according to the independent claims. Further embodiments are apparent from the dependent claims. These and other objects are achieved with a baby bouncer according to an embodiment of the invention. The bouncer comprises a base frame and a seat frame. In a use position the seat frame is inclined relative to the base frame. The baby bouncer further comprises a support device movably connecting the seat frame to the base frame. The support device is attached to the seat frame at one or more respective first connection portions, and to the base frame, such that the inclination alternately increases and decreases during operation of the bouncer, and such that when the inclination of the seat frame decreases, the one or more first connection portions are moved forward relative to base frame, and vice versa. The combination of rotational movement and forward movement at decrease of the inclination of the bouncer, provides the bouncer with a more natural rocking experience for the child and therefore keeps the child more content. 
         [0013]    In the use position, the seat frame is typically inclined relative to the base frame at an inner angle between base frame and seat frame of 15-35 degrees. Such inclination provided for a natural movement of the child. 
         [0014]    The support device may comprise at least one distance member connecting at least one of the first connection portions to at least one second connection portion of the base frame. Each one of said at least one distance member extends from the base frame forwards when the baby bouncer is in its use position. The at least one distance member provides an inexpensive and reliable means for providing the intended movement of the bouncer of the invention. 
         [0015]    The support device may comprise a biasing means configured to elastically deform in response to changes in the inclination of the baby bouncer. Thus, reversible and repeatable bouncing movement is provided for by said biasing means without need of external power means such as a motor for increasing and decreasing the inclination of the bouncer. 
         [0016]    The biasing means may comprise a torsion spring attached at a first end to any one of the at least one distance members and at a second end to any one of the base frame or the seat frame, such that the torsion spring is stressed in response to change of the inclination of the baby bouncer. The torsion spring provides a robust and inexpensive means for elastic deformation to keep the bouncer moving back and forth. 
         [0017]    The second end of the torsion spring may be rotatably hinged at the respective base frame or seat frame. The second end of the torsion spring is provided with a lever, and the lever is connected to the respective base frame or seat frame by means of a length-adjustable spacer. The combination of torsion spring, lever and length-adjustable spacer provides a robust and inexpensive means for allowing adjustment of the inclination of the bouncer. 
         [0018]    The spacer may comprise a first and a second axially aligned spacer element provided on their outside with inverse threads, said spacer elements being joined by a matching threaded sleeve, such that the length of the spacer may be adjusted by rotation of the sleeve. This provides a means for quick adjustment of the length of the spacer using only one hand. 
         [0019]    Further, the spacer may comprise a quick-release mechanism comprising a guide means in which the first spacer element is axially slidable, and a catch arm movable between a locking position in which it locks movement of the spacer element within the guide means, and a release position in which it allows the spacer element to move freely move relative to the guide means. This provides a means for allowing quick folding and unfolding of the bouncer whilst keeping the sleeve untouched, thereby allowing the bouncer to be quickly setup to its preferred inclination after storage. 
         [0020]    In an aspect the invention relates to a bouncer comprising a base frame and a seat frame wherein 
         [0000]    the seat frame is pivotally connected to the base frame by at least one rear and at least one front distance member(s);
 
the rear distance member(s) connected in a first end to rear base frame pivot mounting(s) and in a second end to rear seat frame pivot mounting(s);
 
the front distance member(s) connected in a first ends to front base frame pivot mounting(s) and in a second end to front seat frame pivot mounting(s);
 
wherein, within a vertical longitudinal plane of the bouncer, the distance D 1  in between the rear base frame pivot mounting(s) and the rear seat frame pivot mounting(s) is larger than the distance D 2  between the front base frame pivot mounting(s) and the front seat frame pivot mounting(s).
 
         [0021]    In an alternative D 1  is: at least twice the length of D 2 ; alternatively at least three times the length of D 2 ; alternatively within the range of 2-4 times the length of D 2 . 
         [0022]    In an alternative the rear distance member(s) are non-parallel with the front distance member(s) in an expanded state of the bouncer; alternatively wherein the angle between the rear distance member(s) and the base frame in addition is less than the angle between the front distance member(s) and the base frame. 
         [0023]    In an alternative the distance D 3  between the rear and front base frame pivot mountings is larger than the distance D 4  between the rear and front seat frame pivot mountings. 
         [0024]    In an alternative the angle between the front and rear distance member(s) is limited by a spacer, pivotally connected to at least two of: the rear distance member(s), front distance member(s), base frame and seat frame. The spacer may be length adjustable to regulate the inclination of the seat frame. 
         [0025]    In an alternative the spacer is length adjustable as it comprises a longitudinal slot with recesses spaced apart along the length of the slot, open in the rearward direction, wherein a transversal part of the return members may run in said slot to adjust the angle between the rear and front distance member(s), and fit into the recess for locking said angle. In another alternative the spacer is length adjustable as it comprises a front and rear threaded shaft connected by an outer coupling threaded on the inside allowing continuous adjustment of the effective length of said spacer by turning said coupling. 
         [0026]    The spacer may additionally be extended in an extent to allow for a collapsing of the seat frame onto the base frame. The spacer may comprise a first spacer element and a second spacer element wherein the second spacer element may slide within an adapted housing of the first spacer element. The first or second spacer element may in the opposite end of their connection to each other in addition be length adjustable according to the above to regulate the inclination of the seat. 
         [0027]    The second spacer element may comprises a locking element, such as a recess or hole, into which a locking organ, such as a pin, may enter thereby locking the sliding ability of the second spacer element in relation to the front spacer element, such as for an expanded state of the bouncer. The locking organ may be operated by a lever which upon actuation inserts or removes said locking organ from said locking element. 
         [0028]    In an alternative, the spacer is pivotally connected: 
         [0000]    in a first end to one of the pivot mountings of the base frame or the seat frame; and
 
in a second end to a member selected from: the rear distance member(s), the front distance member(s), the base frame or the seat frame, at a distance from said members pivot mountings;
 
wherein the selected member is not connected to the pivot mounting to which the first end of the spacer is connected. The second end of the spacer may be pivotally connected to a return member of an end of the rear or front distance member(s).
 
         [0029]    In an alternative the bouncer comprises a spring means between at least two members selected from: the rear distance member(s), the front distance member(s), the base frame, the seat frame or the return member. The spring means may comprise: 
         [0000]    flexible rear or front distance member(s); and/or
 
torsion rotation between the end of the rear or front distance member(s) and its return member; and/or
 
spring loaded sliding pivot mountings in either the base frame or seat frame.
 
         [0030]    The invention will be further described by the following example embodiments with reference to the drawings, none of which should be construed as limiting the scope of the invention. 
     
    
     
       DRAWINGS 
         [0031]      FIG. 1A  shows a front perspective view of a bouncer with a frame according to the invention, and  FIG. 1B  shows a rear perspective view of the bouncer in  FIG. 1A . 
           [0032]      FIG. 2A  shows a side view of a bouncer according to prior art in three reclined positions superimposed on each other, and  FIG. 2B  shows a side view of the seat frames only of the three reclined positions in  FIG. 2A . 
           [0033]      FIG. 3A  shows a side view of a bouncer according to prior art in three reclined positions superimposed on each other, and  FIG. 3B  shows a side view of the seat frames only of the three reclined positions in  FIG. 3A . 
           [0034]      FIG. 4A  shows a side view of a bouncer according to the invention in three reclined positions superimposed on each other, and  FIG. 4B  shows a side view of the seat frames only of the three reclined positions in  FIG. 4A . 
           [0035]      FIG. 5  shows a side view of the bouncer in  FIG. 1A . 
           [0036]      FIGS. 6A and 6B  shows a sectional side view of a bouncer according to the invention in two different bouncing position, and  FIG. 6C  shows  FIGS. 6A and 6B  superimposed. 
           [0037]      FIG. 7  shows a perspective rear view of the bouncer in  FIGS. 6A-C . 
           [0038]      FIG. 8A-B  shows sectional side view of the bouncer in  FIGS. 6A-C , wherein  FIG. 8A  shows an erect position and  FIG. 8B  shows a reclined position with detailed views of seat angle regulating mechanism. 
           [0039]      FIGS. 9A-C  shows sectional side view of the bouncer in  FIGS. 6A-C , including detailed views of a locking mechanism for collapsing the bouncer, wherein  FIG. 9A  shows the mechanism locked with the bouncer in an expanded state,  FIG. 9B  shows the mechanism in an un-locked position, and  FIG. 9C  shows the mechanism unlocked with the bouncer in a collapsed state. 
       
    
    
     DETAILED DESCRIPTION 
       [0040]    In the further description the following terms will be used which should be understood as follows unless otherwise specified. 
         [0041]    By the term “in front”, “forward”, “front” and “forward directed” is meant the mainly horizontal direction, which the face and chest of a baby-sitting in the bouncer is facing during normal use. 
         [0042]    Further, by the term “behind”, “rearward”, “rear” and “rearward directed” is meant the opposite mainly horizontal direction, which is the direction towards which the back of the baby sitting in a bouncer generally is directed towards during normal use of the bouncer. 
         [0043]    It should be noted that the terms “rear” and “front” may be used as an indication of the geometric relation of certain parts or objects in relation to each other, and not necessarily to their actual position on the bouncer. 
         [0044]    By the term “longitudinal” is meant the mainly horizontal direction within the plane of symmetry of the bouncer and by “lateral” or “transversal” is meant the generally horizontal direction perpendicular on the plane of symmetry of the bouncer. By “inward” is meant the lateral direction towards the plane of symmetry of the bouncer. 
         [0045]    The invention will in the following be illustrated by examples of embodiments with referred to the figures, none of which are limiting for the invention. 
         [0046]      FIGS. 1A and 1B  illustrate in a front and rear perspective view, respectively, an embodiment of the bouncer  100  according to the present invention in an expanded position. The bouncer  100  comprises a base frame  10  for accommodating the bouncer on a support, such as a floor, and a seat frame  20  with a seat support  30 . The seat frame  20  is pivotally connected to the base frame  10  by pairs of rear and front distance members  40  and  50  respectively. Any of the pairs of distance members may alternatively be replaced by single distance members of a suitable shape and width to obtain a similar function. 
         [0047]    The base frame  10  comprises in this embodiment two parallel longitudinal side parts  11  connected together in the front by a front transversal frame part  12  and in the rear by a rear transversal frame part  13 , both transversal parts having the form of semicircles. In addition, the base frame comprises a transversal part  15  between the longitudinal side parts  11  for accommodating front distance members  50  connecting the base frame  10  to the seat frame  20 . The base frame may alternatively comprise several transversal or longitudinal parts for stiffening the frame or provide accommodation for connecting or distance members. Alternatively the base frame  10  may comprise a mainly solid plate, but in order to reduce weight, such as for ease of transport, a more open structure may be used. 
         [0048]    The seat frame  20  comprises two parallel longitudinal side parts  21  connected together in the front by a front transversal frame part  22  and in the rear by a rear transversal frame part  23 , both transversal parts having the form of semicircles in this embodiment. A seat support  30  is fastened to and spanned over the seat frame  20  and its frame parts. The seat support is divided into three main parts from rear to front, comprising a head and backrest part  31 , a seat part  32  and a leg rest  33 , providing a comfortable and adapted support for the baby when it lies or sits in the bouncer. The seat support  30  may comprise a flexible material, such as textile, possibly with rigid or semi rigid integrated parts, such as in the seat part  32  to maintain support and shape of said part of the seat support. At the same time, such rigid or semi-rigid parts should be flexibly connected to adjacent parts to allow for the seat frame  20  to collapse onto the base frame and become generally flat. 
         [0049]    Hence, in the embodiment of  FIGS. 1A and 1B , the seat frame  20  and base frame  10  have the same general shape which enables the seat frame  20  to collapse onto the base frame  10  and alternatively snapping onto the base frame by outer downward edges of the seat frame  20  just passing on the outside edges of the base frame  10 . Said collapsibility makes the bouncer especially flat and easy to handle and transport in a collapsed state as will be shown later. 
         [0050]      FIG. 2A  illustrates three bouncing positions of a bouncer  200  according to prior art wherein a base frame  210  is connected to a seat frame  220  in a single pivot connection  250 , here in the form of a flexible frame part between said frames. The longitudinal side part  221  of the seat frame  220  is shown as visible through the contours of the seat. The three positions of the bouncer  200  are examples of an upright and a reclined position as well as an unstrained middle position. 
         [0051]      FIG. 2B  illustrates the movement of the seat frame in  FIG. 2A  in a simplified manner by only depicting the positions of side part  221  of the seat frame as representing the tilted state of the seat in the movement from an upright position in  221   a  through a middle position  221   b  to a reclined position  221   c . As may be seen from the figure, the rear part of the seat moves both downward and rearwards during said movement as shown by arrow  201 , whereas the front part of the seat only moves in a slight rearward pivoting movement, as shown by arrow  202 . In total, the seat of this bouncer moves in the general direction of arrow  203  with a virtual centre of rotation  204  positioned slightly below the seat at its front end. The effect of this pivoting movement is that the head of the baby is exposed to a rather long and circular travel path. 
         [0052]      FIG. 3A  illustrates three bouncing positions of a bouncer  300  according to prior art wherein a base frame  310  is connected to a seat frame  320  and wherein the base frame  310  is concavely shaped in the longitudinal direction towards the floor as a rocking-chair. The longitudinal side part  321  of the seat frame  320  is also here shown as visible through the contours of the seat. The three positions of the bouncer  300  are examples of an upright and a reclined position as well as an unstrained middle position. 
         [0053]      FIG. 3B  illustrates the movement of the seat frame in  FIG. 3A  in a simplified manner by only depicting the positions of side part  321  of the seat frame as representing the tilted state of the seat in the movement from an upright position in  321   a  through a middle position  321   b  to a reclined position  321   c . As may be seen from the figure, the rear part of the seat moves both downward and especially rearwards during said movement as shown by arrow  301 , whereas the front part of the seat moves upwards and rearwards, as shown by arrow  302 . In total, the seat of this bouncer moves in the general direction of arrow  303  with a virtual centre of rotation  304  positioned almost directly under the seat. An effect of this pivoting movement is that the head of the baby is exposed to a rolling movement like a rocking-chair rather than accelerations similar to rocking in the comforting arms of his parents. 
         [0054]      FIG. 4A  illustrates three bouncing positions of a bouncer  100  according to the present invention wherein a base frame  10  is connected to a seat frame  20  through double hinged rear and front distance members  40  and  50  respectively. The longitudinal side part  21  of the seat frame  20  is shown as visible through the contours of the seat. The three positions of the bouncer  100  are examples of an upright and a reclined position as well as an unstrained middle position. 
         [0055]      FIG. 4B  illustrates the movement of the seat frame in  FIG. 4A  in a simplified manner by only depicting the positions of side part  21  of the seat frame as representing the tilted state of the seat in the movement from an upright position in  21   a  through a middle position  21   b  to a reclined position  21   c . As may be seen from the figure, the rear part of the seat moves downward and only slightly rearwards during said movement as shown by arrow  101 , whereas the front part of the seat moves in a slight forward pivoting movement, as shown by arrow  102 . In total, the seat of this bouncer moves in the general direction of arrow  103  with, in contrast to that of prior art, a virtual centre of rotation  104  positioned above the seat at its front end. The effect of this movement is more of a swinging movement, closer to the natural movement a baby experiences when being held by an adult and gently being swung in the adult&#39;s arms. Said movement is found to be less stressing for the baby and reduces the travel path of the baby&#39;s head compared to prior art single hinged bouncers, while at the same time reducing the travel path of the baby&#39;s legs compared to a rocking-chair bouncer. 
         [0056]      FIG. 5  shows a detailed embodiment of a bouncer  100  according to the present invention. The base frame  10  comprises rear and front base frame pivot mountings  400  and  500  wherein first ends  41  and  51  of the rear and front distance members  40  and  50  are hinged to the rear  13  and front  12  part of the base frame, respectively. The seat frame  20  further comprises rear and front seat pivot mountings  401  and  501  wherein second ends  42  and  52  of the rear and front distance members  40  and  50  are hinged to the seat frame, respectively. It should be noted that the “rear” and “front” indexing of the pivot mountings is an indication of their geometric relation to each other, and not necessarily to their actual position on said frames. 
         [0057]    In this embodiment, both rear and front seat pivot mountings  401  and  501  in the seat frame  20  are positioned in the front part of said frame, the mounting for the front distance member  50  positioned in front of the mounting for the rear distance member  40 . The result is that the rear distance member  40  is considerably longer than the front distance member  50  in order for the seat to be in a reasonable half reclined position for a baby, in this example more than three times the length. The lengths of said distance members  40 ,  50  affect their effective pivot radius and hence their movement when pivoted. The base frame  10  with rear and front base pivot mountings  400  and  500  is resting immobile on a support (i.e. a floor), the movement of the rear and front seat pivot mountings  401  and  501  hence follow the movement indicated by arrows  105  and  106  respectively. Since the rear distance member  40  is considerably longer than the front distance member  50  it has a larger rotational radius than the front member. In the exemplified inclined position of the seat, the rear distance member  40  is also more inclined (at about 30°) than the front distance member  50  (at about 45°). During bouncing, the movement of the rear seat pivot mountings  401  becomes mainly vertical with only a comparable smaller longitudinal movement, while the movement of the front seat pivot mountings  501  is both vertical and horizontal due to the initial angle of the front distance member  50 . The resulting movement of the seat is hence as described earlier with movement components both vertically and horizontally as indicated by arrow  101  and  102 . 
         [0058]    In order for the bouncer to remain in an expanded condition without collapsing, the rotation of the rear and front distance members  40  and  50  must be locked in relation to each other, such as by one or more rotational locking means. Said means may be a locking of the rotation in one or more of the pivot mountings  400 ,  401 ,  500  and/or  501  or other means. 
         [0059]    Alternatively, rotational locking may be provided by a spacer connected to any two of a rear distance member, a front distance member, a base frame, and a seat frame. The spacer is positioned in order to hinder rotation of said members or frames. As a minimum, at least a first part of such a spacer needs to be connect in a distance from the pivot mountings of the member or frame it is connected to, while a second part may be connected to either a different member or frame, or one of the pivot mountings other than the pivot mountings of the member or frame it is connected to, provided the seat and base frame, and the distance members are not in a parallel configuration. 
         [0060]    In the embodiment shown in  FIG. 5 , a temporary and adjustable locking is achieved by a spacer  60 . The spacer is hinged in its front end to the front part of the seat frame  20 , in this example to the same front pivot mounting  501  as the front distance member  50 . In addition, said spacer  60  is hinged to the second end of the rear distance member  40 , in this example by a return member  43  of the rear distance members  40 , projecting back from the rear seat pivot mounting  401 . In this example the return member  43  has a slightly downward inclined angle compared to the rear distance member  40 . By locking the angular movement between the rear and front distance members  40  and  50  by said spacer  60 , the seat may be locked in an expanded state of the bouncer. 
         [0061]    The spacer  60  comprises a longitudinal slot  63  with downwards-directed recesses  63  spaced apart along the length of the slot  63 , which is open in the rearward direction. A transversal part of the return members  43  free end  44  may run in said slot  63  to adjust the angle between the rear and front distance members, and fit into the recess  62 , thus locking said angle. 
         [0062]    By moving the return members  43  free end  44  rearward and out of the open ended slot  63  the bouncer may be collapsed flat. In order for the seat frame  20  to be collapsible onto the base frame  10 , the distance from the rear end of the seat frame  20  to the rear seat pivot mountings  401  should be about equal to the distance between the rear end of the base frame  10  and the rear base frame pivot mounting  400  plus the length of the rear distance member  40 . Similarly, the distance from the front end of the seat frame  20  to the front seat pivot mountings  501  plus the length of the front distance member  50  should be about equal to the distance between the front end of the base frame  10  and the front base frame pivot mounting  500 . In one alternative, the length of the rear distance member  40  is shorter than the distance between the rear and front base frame pivot mountings  400  and  500  to hinder overlap of the rear and front distance members  40  and  50  when the bouncer is collapsed. 
         [0063]    In order for the bouncer to have a bouncing movement or feathering effect as illustrated in  FIGS. 4A and 4B , the rotation of the rear and front distance members  40  and  50  in relation to each other may be spring-loaded. Such spring loading may be obtained without spacer by any of the pivot mountings  400 ,  401 ,  500  and/or  501  providing torsional spring mounting and hence limiting the angular pivot movement of one or more ends of any of the distance members  40  or  50 . Alternatively, any of the distance members  40  or  50 , or the return member  43  may be flexible or bendable. Alternatively the length of the spacer  60  may be flexible or any of the pivot mountings may slide within the distance members or the frames. 
         [0064]      FIGS. 6A-6B  illustrate a bouncer  100  and its bouncing or swinging movement. The bouncer comprises rear and front distance members  40  and  50 , respectively, and wherein a spacer  600  is hinged in its first end to the front seat pivot mounting  501  and wherein the rear distance member  40  comprises a return member  43  connected in its end  44  in a hinged manner to the second end of said spacer  600 . The spacer  600  in this embodiment comprises a front and rear threaded shaft connected by an outer coupling threaded on the inside allowing continuous adjustment of the effective length of said spacer by simply turning said coupling. 
         [0065]      FIG. 6A  illustrates the bouncer  100  in an expanded position, with the seat frame  20  in a relative upright position. The rear distance member  40  is in a relative inclined angle, about 30°, while the front distance member  50  is almost vertical. In this example, the rear distance member  40 , comprising parallel metal rods, are flexible to some extent, allowing the seat frame to tilt down and forward and altering the rotational position between the rear and front distance members as seen in  FIG. 6B . The total effect of this flexibility is shown in  FIG. 6C  wherein the  FIGS. 6A  and B have been superimposed. As may be noticed, the rear distance member  40  has flexed quite importantly downwards into a bent state, while the front distance member  50  has tilted forwards and downwards, giving the seat frame  20  a swinging movement. As may be seen in  FIG. 6C , the angle between the rear distance member  40  and its return member  43  is smaller in the upper position than in the lower position, which illustrates that there may also be a torsional rotation between said two parts if connected. Alternatively, in the event that the rear distance member  40  is stiff and not flexible, a spring loading may be provided between the rear distance member  40  and its return member  43 , such as a torsion spring effect. 
         [0066]      FIG. 7  illustrates the bouncer in  FIGS. 6A-C  in a rear view wherein an example of said arrangement of the rear distance member  40  and its return member  43  is given. 
         [0067]    In this embodiment, the rear distance members  40  are connected to or form part of a closed or partly closed frame with two parallel longitudinal rods having first and second ends  41  and  42  respectively. The first ends  41  round of laterally towards each other to be hinged in the base frame  10  rear pivot mounting  400 . The second ends  42  round of inwardly to lateral crosspieces  45 , hinged to the seat frame  20  in the seats rear pivot mountings  41 , which in this example are clips  24  receiving said crosspieces  45 . The inward ends of the lateral crosspieces  45  extend rearwards in parallel into a longitudinal return member  43 , which rear ends  44  are directed inward into a mutual lateral piece which is hinged to the rear end of the spacer  600  through the spacers rear pivot mounting  601 . The longitudinal return member  43  may be offset in its inclination in relation to the inclination of the rest of the rear distance member  40 , said inclination relating to inclination within the symmetry plane of the bouncer  100 . 
         [0068]    Hence, in order to obtain an alternative spring loading in relation to the movement of the seat, the crosspieces  45  may have a torsion capacity, in allowing the rear piece  43  and rear distance members  40  rotate in relation to each dependent on the load on said parts from the seat. 
         [0069]    In another alternative, the spacer  600  may be spring loaded, such as by a coil spring within said spacer, which could be telescopic, similar to a conventional shock absorber construction. 
         [0070]    In the present embodiment, the spacer  600  comprises a telescopic function allowing the spacer to expand upon activation by the lever  700 , which allows the bouncer to be collapsed. 
         [0071]      FIGS. 8A and 8B  illustrates the bouncer in two different expanded states,  FIG. 8A  wherein the seat is in a more up-right position in an angle A compared to  FIG. 8B  where the seat in a more reclined position in an angle B, both angles with respect to the base frame or support. The difference in angle positioning of the seat is regulated by the length of the spacer  600  and both figures also show the state of said spacer  600  in a detailed view. 
         [0072]    The spacer  600  comprises a rear spacer element  610  hinged to the rear end  44  of the return member  43  in a rear spacer pivot mounting  601 . The spacer  600  also comprises a front spacer element  620  hinged to the seat frame  20  in a pivot mounting  501 . Said front spacer element  620  also houses a middle spacer element  630  in this embodiment for additional functionalities which will be explained later. However, said middle spacer element  630  may alternatively be an integrated part of the front spacer element  620  for seat angle regulation purposes. 
         [0073]    The rear and front spacer elements  610  and  620  are connected by a distance regulating means  640  for shortening or lengthening of the spacer  600 . In this embodiment, the distance regulating means is a sleeve  640  threaded on the inside which receives facing threaded ends of both the rear and front spacer elements  610  and  620  (either directly or indirectly), which upon turning of said sleeve retracts or separates said spacer elements  610  and  620  towards or away from each other. 
         [0074]    In  FIG. 8A  the seat is in an upright position angle A, due to the total length of the spacer  600  being retracted, the rear and front spacer elements  610  and  620  being in their closest positions to each other and in this embodiment in contact with each other. The shortening of the spacer  600  raises the seat angle as the distance between the front of the seat frame  20  and the front part of the rear distance member  40  (at a distance from the front end due to the return member) is shortened, forcing the front distance member  50  upright towards the rear while the rear distance member  40  moves somewhat up and rearwards due to the set distance between the seat frames hinged mountings. 
         [0075]    In  FIG. 8B  the seat is in a reclined position angle B, due to the length of the spacer  600  being extended, wherein the rear and front spacer elements  610  and  620  being farther apart from each other. The extension of the spacer  600  lowers the seat angle as the distance between the front of the seat frame  20  and the front part of the rear distance member  40  (at a distance from the front end due to the return member) is extended, forcing the front distance member  50  forward and somewhat downwards while the rear distance member  40  moves somewhat down and forward, while the distance the distance members connection to the frame remains the same. 
         [0076]    It should be noted that a relative small change in the length of the spacer  600  changes the seat angle quite importantly. Hence, by using a relative coarse threading in the sleeve and interacting spacer pieces  610  and  630 , as illustrated in the figures, a small rotational adjustment of the sleeve  640  (such as a half or one, or two full turns) may be sufficient to provide the desired angle change of the seat. 
         [0077]    The optional middle spacer element  630  shown in this embodiment is slidingly connected to the front spacer element  620 . In this embodiment the middle spacer element has a front part in the form of a cylinder which may slide within an adapted housing of the front spacer element  620 . The rear end of the middle spacer element  630  is threaded on the outside to fit the sleeve  640 . The front end  632  of the middle spacer element  630  comprises a locking element  633  cooperating with an outside locking organ  703 . In this embodiment the locking element  633  of the middle spacer element  630  is a recess (or hole) into which the locking organ  703  may enter, in this case in the form of pin, locking the sliding ability of the middle spacer element  630  in relation to the front spacer element  620 . The locking organ  703  is operated by a lever  702  which upon actuation may insert or remove said pin  703  to let the middle spacer element  630  slide freely within the front spacer element  620 . It should be noted that the recess of said locking element  633  in this embodiment has a small rearward lip or protrusion on the front top edge of the recess. Similarly, said locking organ  703  entering said recess has a forward protrusion or shoe form, lodging the pin under said lip. This alternative provides the requirement of a certain force or a further insertion of the middle spacer element  630  into the front spacer element  620  before releasing the locking organ from the locking element and collapsing the bouncer. Said function may provide a “click” sensation upon locking or unlocking as a confirmation that the spacer is locked. 
         [0078]      FIGS. 9A-9C  illustrate how an expanded bouncer is collapsed and locked in a transport or storage position. 
         [0079]    In  FIG. 9A  the bouncer is expanded, the seat frame  20  resting in an angled position in relation to the base frame  10 , held in position by the spacer  600 . The spacer  600  is in a somewhat expanded seat regulated mode, (rear spacer element  610  being separated from the middle spacer element  630 ) providing the shown degree of inclination of the seat. From this position, tilting of the seat may be performed by turning the sleeve, and a spring loading from either flexible rear (or front) distance members  40 / 50 , spring torsion in the return member  43 , or spring loading of the spacer  600 , may provide a swinging movement of the bouncer when rocked by the baby or a caretaker. 
         [0080]    From the detailed view it can be seen how the middle spacer element  630  is positioned all the way into the housing of the front spacer element  620 . In this position, the locking element  633  is aligned with the locking organ  703 , which has entered said element. The locking organ  703  may be rotated by the handle  702  through its rotational mounting  701  on the front spacer element  620  to unlock the middle spacer element  630  from the front spacer element  620  so that the middle spacer element may slide freely rearwards in order to collapse the seat. In this embodiment the above-mentioned forward protrusion of the pin is blocked by the rearward lip or protrusion on the front top edge of the locking element  633 . Hence, in order to unlock the spacer  600 , the middle spacer element  630 , which is forced rearward by the weight of the seat and possibly a baby therein, must be forced somewhat forward into front spacer element  620  for the pins  703  front end to clear the rearward lip of the locking element  633 . 
         [0081]    In  FIG. 9B , the locking organ  703 , here the pin, has been extracted from the locking element  633 , the hole or recess in middle spacer element  630 , and the middle spacer element  630  is free to slide further rearward and out of the housing of the front spacer element  620  to let the seat be collapsed. It should be noted that the pivoting of the locking organ  703  and handle  702  may be spring loaded, forcing the locking organ towards the locking element. Hence the handle should be applied until the spacer has started to expand. Thereafter, upon releasing the handle  702 , the locking organ will tilt back into the empty part of the housing of front spacer element  620 . 
         [0082]    In this embodiment, the mutual pivot mounting  501  (of both the top end of the front distance member  50  and the front end of the spacer  600 ), provides a stopper in the pin of said mounting for the front end of the middle spacer element  630  when inserted into the housing of the front spacer element  620 . 
         [0083]    In  FIG. 9C  the bouncer is collapsed, the seat frame  20  resting on the base frame  10 , the two frames creating room between them to accommodate the spacer  600 . From the detailed view it can be seen how the spacer  600  is still in the slight expanded seat regulated mode, (rear spacer element  610  being separated from the middle spacer element  630 ). However, the spacer is additionally expanded as the middle spacer element  630  has slid further rearward and partly out of the housing of the front spacer element  620 . This expansion of the spacer  600  allows both the rear and front distance members  40  and  50  to be lowered forward to a practically horizontal position, stacked within the space between the seat frame  20  resting on the base frame  10 . The handle  702  is in this figure still actuated against a possible spring loading in this figure. However, when releasing said handle the locking organ  703  will enter the empty part of the housing of front spacer element  620 . 
         [0084]    In this embodiment, the seat frame  20  may be detachably locked to the base frame  10  by just fitting onto the base in a precise manner, possibly by deploying one or more friction areas where the two frames are clamped together, or possibly by the use of one or more locks, such as a snap lock. Alternatively, the locking device within the spacer could be used by providing a second set of locking elements and/or locking organs to the middle and front spacer elements  630 ,  620  to lock the spacer in a expanded state as shown in  FIG. 9C . 
         [0085]    When expanding the bouncer again, as in  FIG. 9B , the seat frame  20  is raised until the middle spacer element  630  has entered the full length of the housing of the front spacer element  620  and the locking element  633  is aligned with the locking organ  703 . 
         [0086]    The front end of the middle spacer element has a slanted front end, askew rearwards and in the same direction as the tilting of the locking organ  630 . Hence, upon insertion again of the middle spacer element  630 , its front end will force the locking organ  703  to tilt out of the housing of the front spacer element  620 , against any spring loading. When the middle spacer element is fully inserted in the housing, the locking organ  703  will slip into the locking element  633  by its spring loading without any need for actuating the handle  702  securing that the seat frame  20  is locked in position. 
         [0087]    From this position, tilting of the seat may be performed by turning the sleeve, and a spring loading from either flexible rear (or front) distance members  40 / 50 , spring torsion in the return member  43 , or spring loading of the spacer  600 , may provide a swinging movement of the bouncer when rocked by the baby or a caretaker.