Abstract:
An assembly play equipment for children has to be designed and fabricated with ingenuity while giving first priority to safety. The present invention provides a wonderful present by which young children newly entering this world can be induced to make maximum use of their physical potential and can be encouraged to develop their interests, satisfy their curiosity, and foster their mental abilities and spirit of challenge in a natural manner through physical activity. The base of the assembly play equipment for children is comprised of a pair of end plates which are made vertical in shape and face each other, are formed at top parts of the facing surfaces with open windows, are connected at center parts by a seat surface member, are connected at bottom parts by reinforcing members, and are provided at the center parts with pluralities of first connecting holes for connection use which form rotation preventing parts. One of more of such bases have a step climbing stand, slide, twisted slope, climbing slope, arcade bridge, arch balustrade net bridge, corridor bridge, bulging bridge, wave bridge, or ring tunnel suitably selected and assembled together with them by connecting the second connecting holes and the first connecting holes by connecting pieces.

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to assembly play equipment for use of young children of one to three years age or so. 
       BACKGROUND ART 
       [0002]    An assembly play equipment for children has to be designed and fabricated with ingenuity while giving first priority to safety. 
         [0003]    On top of this, an assembly play equipment for children should be a wonderful present by which young children newly entering this world can be induced to make maximum use of their physical potential and can be encouraged to develop their interests, satisfy their curiosity, and foster their mental abilities and spirit of challenge in a natural manner through physical activity. 
         [0004]    In the past, various playground equipment for young child use has been invented, but none of these realized the above concepts. The reason for this was that to broaden the age range of the young children covered to enable longer years of use, the playground equipment inevitably ended up focusing on older children of four to six years of age. For young children of less than that, their guardians had to stay by them to enable safe use. Specifically, devices for preventing falls, devices for preventing entry and exit from other than predetermined locations, and other safety and protective measures gave the equipment a closed nature and imperfect feel. 
       SUMMARY OF INVENTION 
     Technical Problem 
       [0005]    However, if trying to install such safety and protective measures at the playground equipment, appearance-wise, the playground equipment tended to end up unattractive. The present invention provides an imaginative assembly play equipment for children which uses a small number of reconfigurable members to realize the above concepts and specifically satisfy the following conditions: 
         [0000]    1) Safe structure while eliminating closed nature.
 
2) Sufficient ability to enable young children at play to be watched and the abilities etc. of the children to be observed
 
3) Design and structure enabling young children to freely engage in routine activities and engage in satisfactory playtime activities.
 
4) Design and structure enabling easy reconfiguration in accordance with the application in front of the eyes of the young children so as match the routine and playtime activities of the young children and fostering bold thinking, interests, mental abilities, and spirit of challenge in a natural manner through physical activity.
 
5) Ability through 4) for young children to reconfigure assembly play equipment on their own or change it to desired configuration
 
       Solution to Problem 
       [0006]    The features of the child-use assembly play equipment of the present invention which satisfies these requirements are as in the following (A) to (C). 
         [0007]    (A) An assembly play equipment for children comprised of a base which is comprised of a pair of end plates which are made vertical in shape and face each other, are formed at top parts with open windows, are connected at center parts by a seat surface member, are connected at bottom parts by reinforcing members, and are provided with first connecting holes for connection use which form rotation preventing parts, at least one of a step climbing stand, bulging climbing stand, slide, climbing slope, and twisted slope which are provided with second connecting holes which are connected to the first connecting holes of the base by connecting pieces and which have rotation preventing parts, and at least one of an arcade bridge, arch balustrade net bridge, corridor bridge, wave bridge, ring tunnel, and bulging bridge which are provided with second connecting holes which are connected to the first connecting holes of the base by connecting pieces between bases, wherein each connecting piece is provided with a bolt which is formed at its back part with a flange which abuts against an entrance circumferential surface of a first connecting hole or second connecting hole, is formed at its flange with an insert connecting part which forms a rotation preventable part which is fit into the rotation preventing part of the first connecting hole or second connecting hole, and is formed with a male screw part at a part which sticks out from the first connecting hole or second connecting hole and is provided with a nut which is formed with a flange which abuts against an exit circumferential surface of the first connecting hole or the second connecting hole through a looseness preventing packing and is formed with a female screw part which screws over the male screw part of the bolt. 
         [0008]    (B) An assembly play equipment for children which has a base which is comprised of a pair of end plates which are made vertical in shape and face each other, are formed at top parts of the facing surfaces with open windows, are connected at center parts by a seat surface member, are connected at bottom parts by reinforcing members, and are provided at the center parts at the two end parts with first connecting holes for connection use which form rotation preventing parts and which has first connecting holes of first end parts of the end plates of the base connected to second connecting holes of the following (1), (2), or (3) by connecting pieces and has other end parts of the end plates connected to second connecting holes of the following (3, (4), or (5) by connecting pieces: 
         [0000]    (1) a step climbing stand which is provided at two sides of climbing steps with handrail-equipped holding frames and is provided at the top end parts of the handrail-equipped holding frames with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(2) a bulging climbing stand which is provided at the two sides of a bulging climbing plate with handrail-equipped holding frames, is provided at the climbing plate with climbing assisting ropes, and is provided at the top end parts of the handrail-equipped holding frames with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(3) a slide which is provided at the two sides of a slide plate with handrail-equipped holding frames and is provided at the top end parts of the handrail-equipped holding frames with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(4) a twisted slope which is provided at the two sides of a slide plate with handrail-equipped holding frames, is provided at parts of the top end parts of the handrail-equipped holding frames with second connecting holes for the connecting piece use and forming rotation preventing parts, and has a twisted slide surface member arranged at the slide plate, and
 
(5) a climbing slope which suitably arranges climbing projections at a slope plate, is provided at the two sides of the top part of the slope plate with handrail-equipped holding frames, is provided at the handrail-equipped holding frames with open windows, and is provided with second connecting holes which form rotation preventing parts, wherein
 
each connecting piece is provided with a bolt which is formed at its back part with a flange which abuts against an entrance circumferential surface of a first connecting hole or second connecting hole, is formed at its flange with an insert connecting part which forms a rotation preventable part which is fit into the rotation preventing part of the first connecting hole or second connecting hole, and is formed with a male screw part at a part which sticks out from the first connecting hole or second connecting hole and is provided with a nut which is formed with a flange which abuts against an exit circumferential surface of the first connecting hole or the second connecting hole through a looseness preventing packing and is formed with a female screw part which screws over the male screw part of the bolt.
 
         [0009]    (C) An assembly play equipment for children which is comprised of a plurality of bases, each base comprised of a pair of end plates which are made vertical in shape and face each other, are formed at top parts of the facing surfaces with open windows, are connected at center parts by a seat surface member, are connected at bottom parts by reinforcing members, and are provided at the center parts at the two end parts with first connecting holes for connection use which form rotation preventing parts, 
         [0000]    wherein a base at an end part has at least one of the following connected to it by connecting pieces through the second connecting holes and the first connecting holes:
 
(1) a step climbing stand which is provided at two sides of climbing steps with handrail-equipped holding frames and is provided at the top end parts of the handrail-equipped holding frames with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(2) a bulging climbing stand which is provided at the two sides of a bulging climbing plate with handrail-equipped holding frames, is provided at the climbing plate with climbing assisting ropes, and is provided at the top end parts of the handrail-equipped holding frames with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(3) a slide which is provided at the two sides of a slide plate with handrail-equipped holding frames and is provided at the top end parts of the handrail-equipped holding frames with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(4) a twisted slope which is provided at the two sides of a slide plate with handrail-equipped holding frames, is provided at parts of the top end parts of the handrail-equipped holding frames with second connecting holes for the connecting piece use and forming rotation preventing parts, and has a twisted slide surface member arranged at the slide plate, and
 
(5) a climbing slope which suitably arranges climbing projections at a slope plate, is provided at the two sides of the top part of the slope plate with handrail-equipped holding frames, is provided at the handrail-equipped holding frames with open windows, and is provided with second connecting holes which form rotation preventing parts,
 
wherein the bases between them have at least one of the following connected to them by connecting pieces through the second connecting holes and the first connecting holes:
 
(6) an arcade bridge which is provided at the two sides of a crossing member with handrail-equipped holding frames which are formed with open windows, has attached to it a transparent arcade which surrounds the two sides and top of a young child passing between the handrail-equipped holding frames, and is provided at the two end parts at the front and back of the handrail-equipped holding frames with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(7) an arch balustrade net bridge which is provided at the two sides of a net member with holding frames which are curved outward, has arch shaped balustrades comprised of horizontal members and vertical members assembled together attached to the holding frames, is provided at the two end parts at the front and back of the holding frames with support members, and is provided at the support members with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(8) a corridor bridge which is provided at the two sides of a curved crossing corridor bridge with holding side walls which are formed with open windows and is provided at the two end parts at the front and back of the holding side walls with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(9) a bulging bridge which is provided at the two sides of a bulging crossing plate with holding arch walls which are formed with open windows and is provided at the two end parts at the front and back of the holding arch walls with second connecting holes for the connecting piece use and forming rotation preventing parts,
 
(10) a wave bridge which is provided at the two sides of a wave crossing plate with holding arch walls provided with open windows and with open windows over which transparent plates are attached and preventing falls, is provided at an entrance and exit of the holding arch walls with support arches, and is provided at the bottom end parts of the holding arch walls with second connecting holes for the connecting piece use and forming rotation preventing parts, and
 
(11) a ring tunnel which is provided with a plurality of oval rings and a net which surround a bottom part, two side parts, and upper part of a curved crossing plate and arch members which support these through horizontal bars and are arranged at the entrance and exit and support members at the bottom part of the arch members, at the support members, second connecting holes for the connecting piece use and forming rotation preventing parts being provided, and
 
wherein each connecting piece is provided with a bolt which is formed at its back part with a flange which abuts against an entrance circumferential surface of a first connecting hole or second connecting hole, is formed at its flange with an insert connecting part which forms a rotation preventable part which is fit into the rotation preventing part of the first connecting hole or second connecting hole, and is formed with a male screw part at a part which which sticks out from the first connecting hole or second connecting hole and is provided with a nut which is formed with a flange which abuts against an exit circumferential surface of the first connecting hole or the second connecting hole through a looseness preventing packing and is formed with a female screw part which screws over the male screw part of the bolt.
 
       Advantageous Effects of Invention 
       [0010]    The assembly play equipment for children of the present invention is comprised of one or more bases of a design encouraging climbing and the freely selected wonderfully designed open-feeling parts of (1) to (8). All of the parts which are connected to the bases have at least entrances and exits of the crossing passages matched in level with the levels of the seat surfaces of the end plates. Connecting piece are used to quickly, easily, and ruggedly connect the parts, so there are no inside barriers to movement. The sight of the children at play can be enjoyed and the abilities of the children etc. can be clearly observed. An athletic playground equipment of a safe, imaginative, fun, 3D design can be configured. Due to this, the assembly play equipment for children of the present invention can draw out from young children a feeling of wanting to play upon seeing the set. Further, it is possible to see friends at play from inside and outside the playground equipment. Also, children at play can be watched to check their reflexes and ensure safety. Further, the children can not only enjoy the sight of the assembly play equipment, but can also freely touch it, ride on it or shake it and slide on it, so there are the superior action and effect of enabling learning through experience and learning through application via the medium of curiosity and challenge. 
         [0011]    The pair of end plates of the base are made plates with flat front and back surfaces and with the entire end faces between the front and back surfaces preferably made curved to give them roundness and thereby enable ruggedness and safe handling with little restraint. Further, the edge parts of the two plate surfaces are provided with pluralities of first connecting holes which the connecting pieces are used to fasten so as to hold the shape, so the end plates will never detach during use, will never loosen, and will never deform, so safety is ensured. Furthermore, it is possible to systematically assemble the parts to draw out the interest of the young children and stimulate their sense of challenge and motor reflexes etc. The number of variations used is multiplied. 
         [0012]    The connecting pieces can be used to connect the bases and the above parts in any freely selected number. They safely fasten and connect the parts and hold those states in the face of all sorts of rough handling by young children. Further, the parts can be easily attached and detached by the later explained simple structure wrench SP etc. 
         [0013]    The main configurable structures are given in the following examples, but these are just partial examples. There are many variations. The creative energies of the children can be harnessed to design various sets and the sets can be assembled in front of them. This plays an important role as educational material. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0014]      FIG. 1-1  gives a perspective explanatory view (1) which shows Example of Base  1  of assembly parts of the assembly play equipment for children of the present invention, while (2) is a side view of an end plate. 
           [0015]      FIG. 1-2  gives a perspective explanatory view (1) which shows Example of Base  2  of assembly parts of the assembly play equipment for children of the present invention, while (2) is a side view of an end plate. 
           [0016]      FIG. 1-3  gives a perspective explanatory view (1) which shows Example of Base  3  of assembly parts of the assembly play equipment for children of the present invention, while (2) is a side view of an end plate. 
           [0017]      FIG. 1-4  gives a perspective explanatory view (1) which shows Modified Example of Base  4  of the base which is shown in  FIG. 1-1  of assembly parts of the assembly play equipment for children of the present invention 
           [0018]      FIG. 1-5  gives a perspective explanatory view which shows Modified Example of Base  5  of the base which is shown in  FIG. 1-2  of assembly parts of the assembly play equipment for children of the present invention 
           [0019]      FIG. 1-6  gives a perspective explanatory view which shows Modified Example of Base  6  of the base which is shown in  FIG. 1-3  of assembly parts of the assembly play equipment for children of the present invention. 
           [0020]      FIG. 2  gives a perspective explanatory view (1) which shows an example of a step climbing stand of assembly parts of the assembly play equipment for children of the present invention, while (2) is a side view of a step climbing stand. 
           [0021]      FIG. 3  gives a perspective explanatory view which shows an example of a bulging climbing stand of assembly parts of the assembly play equipment for children of the present invention. 
           [0022]      FIG. 4  gives a perspective explanatory view (1) which shows an example of a slide of assembly parts of the assembly play equipment for children of the present invention, while (2) is a side view of a slide. 
           [0023]      FIG. 5  gives a perspective explanatory view (1) which shows an example of a twisted slope of assembly parts of the assembly play equipment for children of the present invention, while (2) is a side view of a twisted slope. 
           [0024]      FIG. 6  gives a perspective explanatory view which shows an example of a climbing slope of assembly parts of the assembly play equipment for children of the present invention. 
           [0025]      FIG. 7  gives a perspective explanatory view (1) which shows an example of an arcade crossing bridge (=plastic tunnel) of assembly parts of the assembly play equipment for children of the present invention, while (2) is a side view of a plastic tunnel. 
           [0026]      FIG. 8  gives a perspective explanatory view which shows an example of an arch balustrade net bridge of assembly parts of the assembly play equipment for children of the present invention, while (2) is a side view of an example of an arch balustrade net bridge. 
           [0027]      FIG. 9  gives a perspective explanatory view which shows a corridor bridge shown in  FIG. 22  of assembly parts of the assembly play equipment for children of the present invention. 
           [0028]      FIG. 10  gives a side view which shows an example of a bulging bridge of assembly parts of the assembly play equipment for children of the present invention. 
           [0029]      FIG. 11  gives a perspective explanatory view (1) which shows one example of a wave bridge of assembly parts of the assembly play equipment for children of the present invention, while (2) is a side view of a wave bridge. 
           [0030]      FIG. 12  gives a perspective explanatory view which shows an example of ring tunnel of assembly parts of the assembly play equipment for children of the present invention. 
           [0031]      FIG. 13  gives an explanatory view which shows an example of a connecting piece for the assembly kit of the present invention. 
           [0032]      FIG. 14  gives a perspective explanatory view which shows an Example of Configuration 1. 
           [0033]      FIG. 15  gives a perspective explanatory view which shows an Example of Configuration 2. 
           [0034]      FIG. 16  gives a perspective explanatory view which shows an Example of Configuration 3. 
           [0035]      FIG. 17  gives a perspective explanatory view which shows an Example of Configuration 4. 
           [0036]      FIG. 18  gives a perspective explanatory view which shows an Example of Configuration 5. 
           [0037]      FIG. 19  gives a perspective explanatory view which shows an Example of Configuration 6. 
           [0038]      FIG. 20  gives a perspective explanatory view which shows an Example of Configuration 7. 
           [0039]      FIG. 21  gives a perspective explanatory view which shows an Example of Configuration 8. 
           [0040]      FIG. 22  gives a perspective explanatory view which shows an Example of Configuration 9. 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
       [0041]    Embodiments of the present invention will be explained in detail by the following examples. 
       Examples 
       [0042]      FIG. 1  to  FIG. 12  introduce the assembly parts of the assembly play equipment for children of embodiments of the present invention. These are suitably assembled by the connecting pieces  300  which are shown in  FIG. 13 . Fun examples of playground equipment obtained by the assembly play equipment are shown in  FIG. 14  to  FIG. 22 . Examples of the parts of the assembly play equipment for children of these embodiments include the bases  100 - 1  to  100 - 6  which are shown in  FIG. 1-1  to  FIG. 1-6 , the step climbing stand  20  which is shown in  FIG. 2 , the bulging climbing stand  30  which is shown in  FIG. 3 , the slide  40  which is shown in  FIG. 4 , the twisted slope  50  which is shown in  FIG. 5 , the climbing slope  120  which is shown in  FIG. 6 , the arcade bridge  60  which is shown in  FIG. 7 , the arch balustrade net bridge  70  which is shown in  FIG. 8 , the corridor bridge  80  which is shown in FIG.  17  and  FIG. 18 , the corridor bridge  800  which is shown in  FIG. 9  and  FIG. 22 , the bulging bridge  90  which is shown in  FIG. 10 , the wave bridge  130  which is shown in  FIG. 11 , and the ring tunnel  150  which is shown in  FIG. 12 . 
         [0043]    The base  100 - 1  which is shown in  FIG. 1-1  is comprised of a pair of H-shaped end plates  140 - 1  which are made vertical in shape and face each other, are formed at the top parts of the facing surfaces with vertical oblong open windows  110  for preventing falling and enabling children at play to be watched from the inside and outside, are connected at the center parts by a seat surface member  12 , and are connected at the bottom parts by reinforcing members  13 . The end plates  140 - 1  are formed at the center parts at the front and back with pluralities of first connecting holes KH- 1  for connection use and for forming rotation preventing parts KHR resulting in a rugged structure able to be safely handled without restraint. 
         [0044]    Further, the end plates  140 - 1  are rounded at the entire end faces. Light weight, sturdy plywood comprised of various child-friendly colored boards combined together so that the end faces present layers of color, made of various color solid wood, made of plastic, made of light metals, etc. are used. At the side surfaces, pictures of animals, pictures of scenery, geometric patterns, cartoons, and other fun pictures are drawn to foster the color sense and visual sense of the children. 
         [0045]    The base  100 - 2  which is shown in  FIG. 1-2  is a type which employs H-shaped end plates  140 - 2  which are formed with vertical oblong open windows  111  at the top parts of the two sides. The other component members are the same as the base  100 - 1  which is shown in  FIG. 1-1 , so the same reference notations will be given and explanations will be omitted. 
         [0046]    The base  100 - 3  which is shown in  FIG. 1-3  is a type which employs arch-type end plates  140 - 3  which are formed with arch shaped or split arch shaped open windows  112  at the top parts. The other component members are the same as the base  100 - 1  which is shown in  FIG. 1-1 , so the same reference notations will be given and explanations will be omitted. 
         [0047]    The base  100 - 4  which is shown in  FIG. 1-4  is a modification of the base  100 - 1  which is shown in  FIG. 1-1 . One of the end plates is made the end plate  140 - 1 , while the other is made a modified end plate  0140  with no top part. At the two side parts of the center part of the side surface, connection-use projections  0141  are provided. These connection-use projections  0141  are provided with the first connecting holes KH- 1  and enable suitable parts to be connected to the base  100 - 4  in the horizontal direction. 
         [0048]    The base  100 - 5  which is shown in  FIG. 1-5  is a modification of the base  100 - 2  which is shown in  FIG. 1-2 . One of the end plates is made the end plate  140 - 2 , while the other is made a modified end plate  0140  with no top part. At the two side parts of the center part of the side surface, connection-use projections  0141  are provided. These connection-use projections  0141  are provided with the first connecting holes KH- 1  and enable suitable parts to be connected to the base  100 - 5  in the horizontal direction. 
         [0049]    The base  100 - 5  which is shown in  FIG. 1-6  is a modification of the base  100 - 3  which is shown in  FIG. 1-3 . One of the end plates is made the end plate  140 - 3 , while the other is made a modified end plate  0140  with no top part. At the two side parts of the center part of the side surface, connection-use projections  0141  are provided. These connection-use projections  0141  are provided with the first connecting holes KH- 1  and enable suitable parts to be connected to the base  100 - 5  in the horizontal direction. 
         [0050]    The step climbing stand  20  which is shown in  FIG. 2  is provided at the two sides of climbing steps  21  with handrail-equipped holding frames  23  with oblong open windows  22  and for preventing falling. At the top end parts of the handrail-equipped holding frames  23 , second connecting holes KH- 2  for the connecting piece  300  use and forming rotation preventing parts KHR are provided. 
         [0051]    The bulging climbing stand  30  which is shown in  FIG. 3  is provided at the two sides of a climbing bulging plate  31  with handrail-equipped holding frames  33  with oblong open windows  32  and for preventing falling. At the center of the climbing bulging plate  31 , a climbing rope  34  is connected and hung down. It is supported by a rope  34   s . At the top end parts of the handrail-equipped holding frames  33 , second connecting holes KH- 2  for the connecting piece  300  use and forming rotation preventing parts KHR are provided. The top end of the climbing bulging plate  31  is matched in level with the seat surface of the seat surface member  12  of the base to be connected so as to eliminate inside barriers to movement. 
         [0052]    The slide  40  which is shown in  FIG. 4  is provided at the two sides of a slide plate  41  with handrail-equipped holding frames  42  for preventing falling and is provided at the top end parts of the handrail-equipped holding frames  42  with second connecting holes KH- 2  for the connecting piece  300  use and forming rotation preventing parts KHR. The handrail-equipped holding frames  42  may also be formed with open windows. Further, the top end of the slide plate  41  is matched in level with the seat surface of the seat surface member  12  of the base to be connected so as to eliminate inside barriers to movement. 
         [0053]    The twisted slope  50  which is shown in  FIG. 5  is provided at the two sides of a slide plate  51  with handrail-equipped holding frames  53  with oblong open windows  52  and for preventing falling, is provided at the bottom parts of the two sides of the top end parts of the handrail-equipped holding frames  53  with second connecting holes NR- 2  for the connecting piece  300  use and forming rotation preventing parts KHR, and arranges on the slide plate  51  a twisted slope surface member  510 . The open windows  52  enable young children in the process of sliding to be seen and are formed into oblong shapes along the sliding direction to prevent the hands of the young children etc. from being caught in them. The top end of the slide plate  51  is matched in level with the seat surface of the seat surface member  12  of the base to be connected so as to eliminate inside barriers to movement. 
         [0054]    The climbing slope  120  which is shown in  FIG. 6  suitably arranges climbing projections  122  at a slope plate  121 , is provided at the two sides of the top part of the slope plate  121  with handrail-equipped holding frames  123 , is provided at the handrail-equipped holding frames  123  with open windows  124 , and is provided with second connecting holes KH- 2  which form rotation preventing parts KHR. 
         [0055]    The arcade bridge  60  which is shown in  FIG. 7  is a bridge where children at play can be seen from the inside and outside. It is provided at the two sides of a crossing member  61  with handrail-equipped holding frames  63  which are provided with a large number of vertical oblong open windows  62 , has attached to it a transparent arcade  64  which surrounds the two sides and top of a young child crossing between the handrail-equipped holding frames  63 , is provided with support arches  65  at the entrance and exit of the arcade  64 , is provided with support beams  66  which connect and support the top parts of the support arches  65  and hold the arcade  64 , and is provided at the two end parts at the front and back of the handrail-equipped holding frames  63  with second connecting holes KH- 2  for the connecting piece  300  use and forming rotation preventing parts KHR. The entrance and exit of the crossing member  61  are matched in level with the seat surface of the seat surface member  12  of the base to be connected so as to eliminate inside barriers to movement. 
         [0056]    The arch balustrade net bridge  70  which is shown in  FIG. 8  is a bridge where children at play can be seen from the inside and outside. It is provided, supporting the two sides of a net crossing member  71 , with horizontal holding frames  72  which are curved outward, has attached on the horizontal holding frames  72  vertical members  73  in arch shapes at equal intervals to form balustrades  74 , is provided at the two end parts at the front and back of the horizontal holding frames  72  with connecting members  75 , and is provided at the connecting members  75  with second connecting holes KH- 2  for the connecting piece  300  use and forming rotation preventing parts KHR. The entrance and exit of the net crossing member  71  are matched in level with the seat surface of the seat surface member  12  of the base to be connected so as to eliminate inside barriers to movement. 
         [0057]    Each of the corridor bridge  800  which is shown in  FIG. 9  and the corridor bridge  80  which is shown in  FIG. 17  and  FIG. 18  is formed at the two sides of a curved crossing corridor bridge  81  with open windows  82 , is provided at the entrance and exit at two sides of the curved crossing corridor bridge  81  and an intermediate part with reinforcing arch members  84 , is provided with holding side walls  83  which are suitably supported over their spans by support columns  85 , support stands  87 , etc., and are provided at the two end parts at the front and back of the holding side walls  83  with second connecting holes KH- 2  for the connecting piece use and forming rotation preventing parts KHR. At the top and bottom of the holding side walls  83 , reinforcing frames  86  are attached. The entrance and exit of the curved crossing corridor bridge  81  are matched in level with the seat surface of the seat surface member  12  of the base to be connected so as to eliminate inside barriers to movement. The corridor bridge  80  which is shown in  FIG. 17  and  FIG. 18  is formed at the two sides of the curved crossing corridor bridge  81  with open windows  82 , is provided with holding side walls  83  suitably supported by connecting support columns  88  over their spans, and is provided at the two end parts at the front and back of the holding side walls  83  with not shown second connecting holes for the connecting piece use and forming rotation preventing parts. 
         [0058]    The bulging bridge  90  which is shown in  FIG. 10  is a bridge where children at play can be seen from the inside and outside. It is provided at the two sides of a bulging crossing plate  91  with holding arch walls  94  which are formed with open windows  92  which pass straight through them and open windows  93  which have transparent plates attached to them, is provided at the entrance and exit at the front and back of the holding arch walls  94  with arches  95 , and is provided at the bottom parts of the two end parts with second connecting holes KH- 2  for the connecting piece  300  use and forming rotation preventing parts KHR. The entrance and exit of the bulging crossing plate  91  are matched in level with the seat surface of the seat surface member  12  of the base to be connected so as to eliminate inside barriers to movement. 
         [0059]    The wave bridge  130  which is shown in  FIG. 11  is a bridge where children at play can be seen from the inside and outside. It is provided at the two sides of a wave crossing plate  131  with holding arch walls  134  provided with oblong open windows  132  and with open windows  133  over which transparent plates are attached and preventing falls, is provided at an entrance and exit of the holding arch walls  134  with support arches  135 , and is provided at the bottom end parts of the holding arch walls with second connecting holes KH- 2  for the connecting piece  300  use and forming rotation preventing parts KHR. The entrance and exit of the wave crossing plate  131  are matched in level with the seat surface of the seat surface member  12  of the base to be connected so as to eliminate inside barriers to movement. 
         [0060]    The ring tunnel  150  which is shown in  FIG. 12  is a bridge where children at play can be seen from the inside and outside. It is provided with a plurality of oval rings  152  and a net  153  which surround the bottom part, two side parts, and upper part of a curved crossing plate  151 , arch members  155  which support these through horizontal bars  154  and are arranged at the entrance and exit, and support members  156  at the bottom part of the arch members  155 . At the support members  156 , second connecting holes KH- 2  for the connecting piece  300  use and forming rotation preventing parts KHR are provided. 
         [0061]    The connecting piece  300  which is shown in  FIG. 13  is formed from light weight, rugged wood, plastic, light metal, etc. and can strongly connect any first connecting holes KH- 1  which are provided at the bases  10 ,  100  and second connecting holes KH- 2  which are provided at the climbing stand  20 , bulging climbing stand  30 , slide  40 , twisted slope  50 , arcade bridge  60 , arch balustrade net bridge  70 , corridor bridge  80 , bulging bridge  90 , etc. without distortion or looseness. 
         [0062]    This connecting piece  300  is structured provided with a bolt  310  which is formed at its back part with a flange  301  which abuts against an entrance circumferential surface of a first connecting hole KH- 1  or second connecting hole KH- 2 , is formed at its flange  301  with an insert connecting part  302  which forms a rotation preventable part ARK which is fit into the rotation preventing part KHR of the first connecting hole KH- 1  or second connecting hole KH- 2 , and is formed with a male screw part  304  at a part which sticks out from the second connecting hole KH- 2  after the insert connecting part  302  and is provided with a cap-shaped nut  320  which is formed with a cap  307  with a flange  306  which abuts against an exit circumferential surface of the second connecting hole KH- 2  through a looseness preventing packing  305  and is formed with a female screw part  308  which screws over the male screw part  304  of the bolt  310 . 
         [0063]    The looseness preventing packing  305  of the nut  320  absorbs any external force which is applied at the time of being held with the flange  306  and after being held due to a cushion effect so the end plates  13  and the connection-use projections  15  are never crushed. This nut  320  is provided with a hole  321  for insertion of the projection SP- 1  of the circular wrench SP and enables use of the wrench SP for rotation to fasten and loosen it. 
       Example of Configuration 1 
       [0064]    Example of Configuration 1 which is shown in  FIG. 14  is an example of configuration of a base  100 - 1 , a climbing stand  20 , and a slide  40 . The example in  FIG. 14  is an Example of Configuration 1 which is obtained by connecting to first connecting holes KH- 1  at the center parts of the front parts of the end plates  140 - 1  of the base  100 - 1  the second connecting holes KH- 2  of the top part of the slide  40  provided with the handrail-equipped holding frames by using the connecting pieces  300  and by connecting to the first connecting holes KH- 1  of the center parts of the back parts of the end plates  140 - 1  the second connecting holes KH- 2  of the top part of the climbing stand  20  by using the connecting pieces  300 . 
       Example of Configuration 2 
       [0065]    Example of Configuration 2 which is shown in  FIG. 15  is an example of configuration of two bases  100 - 1  to which the step climbing stand  20 , slide  40 , and arcade bridge  60  have been added. The example which is shown in  FIG. 15  is an example which is obtained by preparing two bases  100 - 1 , connecting to the first connecting holes KH- 1  of the center parts of the front parts of the end plates  140 - 1  of the first base  100 - 1  the second connecting holes KH- 2  of the top parts of the handrail-equipped holding frames  43  of the slide  40  by the connecting pieces  300 , connecting to the first connecting holes KH- 1  of the center parts of the back parts of the end plates  140 - 1  of the second base  100 - 1  the second connecting holes KH- 2  of the top parts of the handrail-equipped holding frames  23  of the step climbing stand  20  by the connecting pieces  300 , and assembling the arcade bridge  60  between the first base  100 - 1  and the first base  100 - 1 . 
       Example of Configuration 3 
       [0066]    Example of Configuration 3 which is shown in  FIG. 16  is an example which is obtained by preparing three bases  100 - 1 ,  100 - 4 ,  100 - 4 , connecting the slide  40  to the front parts of the end plates  140 - 1  of the first base  100 - 1 , connecting an arcade bridge  60  between the first base  100 - 1  and the second base  100 - 4 , connecting an arcade bridge  60  between the second base  100 - 4  and the third base  100 - 4 , connecting step climbing stands  20  to the back part of the second base  100 - 4  and the back part of the third base  100 - 4 , and connecting a twisted slope  50  to the front part of the third base  100 - 4 . 
       Example of Configuration 4 
       [0067]    Example of Configuration 4 which is shown in  FIG. 17  is an example which is comprised of three bases  100 - 2 , a slide  40 , a step climbing stand  20 , a bulging bridge  90 , a corridor bridge  80 , and a bulging climbing stand  30 . That is, it is an example of a slide  40 , a first base  100 - 2 , a bulging bridge  90 , a second base  100 - 2 , a step climbing stand  20 , a corridor bridge  80 , a third base  100 - 2 , and a bulging climbing stand  30  connected in that order. The present example is a type which mainly enables access to the playground equipment from the bulging climbing stand  30  and step climbing stand  20  and allows exit to the outside of the playground equipment from the slide  40 . 
       Example of Configuration 5 
       [0068]    Example of Configuration 5 which is shown in  FIG. 18  is a modification of Example of Configuration 4 and an example in which a modified corridor bridge comprised of half of the corridor bridge  80  which is shown in Example of Configuration 4 is assembled. 
       Example of Configuration 6 
       [0069]    Example of Configuration 6 which is shown in  FIG. 19  is an example of configuration of a base  10 - 3 , a step climbing stand  20 , and a slide  40 . The base  10 - 3 , compared with the example which is shown in  FIG. 1-3 , has open windows  112  which are made arch shaped. 
       Example of Configuration 7 
       [0070]    Example of Configuration 7 which is shown in  FIG. 20  is an example of configuration of a slide  40 , a base  100 - 3 , a wave bridge  130 , a base  100 - 3 , and a step climbing stand  20  in that order. 
       Example of Configuration 8 
       [0071]    Example of Configuration 8 which is shown in  FIG. 21  is an example of configuration of a slide  40 , a base  100 - 3 , a wave bridge  130 , a base  100 - 6 , a step climbing stand  20 , a ring tunnel  150 , a base  100 - 6 , and a climbing slope  120  in that order. 
       Example of Configuration 9 
       [0072]    Example of Configuration 9 which is shown in  FIG. 22  is a modification of the example which is shown in  FIG. 17  and an example of configuration of a slide  40 , a base  100 - 2 , a bulging bridge  90 , a base  100 - 5 , a step climbing stand  20 , a corridor bridge  800 , a base  100 - 2 , and a bulging climbing stand  30  in that order. 
         [0073]    As shown by these introduced examples, it is possible to combine various pieces of equipment to match with the space in a playground area and possible to quickly and easily put together various playground facilities which are wonderful to see and are full of fun. Therefore, it is possible to obtain an excellent action and effect of enabling free creation of a paradise for the education and growth of imaginative young children with a challenging outlook on life. 
       INDUSTRIAL APPLICABILITY 
       [0074]    The assembly play equipment for children of the present invention exhibits the above-mentioned excellent actions and effects, so is being broadly utilized in general homes of course and also kindergartens, daycare centers, and other child education facilities etc. and contributes tremendously to the education industry first and foremost and the furniture industry and playground equipment industry, playground equipment leasing industry, etc. 
       REFERENCE NOTATIONS LIST 
       [0000]    
       
         KH- 1 : first connecting hole 
         KH- 2 : second connecting hole 
         KHR: rotation preventing part 
         ARK: anti-rotation part 
           100 - 1 ,  100 - 2 ,  100 - 3 ,  100 - 4 ,  100 - 5 ,  100 - 6 : base 
           140 - 1 ,  140 - 2 ,  140 - 3 : end plate 
           20 : step climbing stand 
           30 : bulging climbing stand 
           40 : slide 
           50 : twisted slope 
           60 : arcade bridge 
           70 : arch balustrade net bridge 
           80 ,  800 : corridor bridge 
           90 : bulging bridge 
           120 : climbing slope 
           130 : wave bridge 
           150 : ring tunnel 
           300 : connecting piece