as shown in fig1 a , 6b and 6c , a shower structure in accordance with the present invention has a flexible and collapsible shower enclosure unit which is identified as a whole with reference numeral 1 . the shower enclosure unit 1 in a working condition extends substantially vertically and limits an inner space 2 for accommodating a person taking a shower . the shower enclosure unit 1 can be composed of any existing water resistant material . shower enclosure unit 1 includes a generally flat floor 1a , a rear wall portion 1b sealingly connected at a common edge to one edge of side wall portion 1c and sealingly connected at a common edge to one edge of side wall portion 1c and sealingly connected at a further common edge to one edge of further side wall portion 1d . to enter the shower structure , front wall portion 1e folds down by the unzipping of zippers 21 and 22 . dual zipper21 moves down within dual zipper guide 23 and zipper 22 moves down within dual zipper guide 24 . dual zipper guide 23 forms a removable edge between side wall portion 1c and front wall portion 1e . dual zipper guide 24 forms a further removable edge between side wall portion 1d and front wall portion 1e . when dual zippers 21 and 22 are moved down to floor portion 1a , front wall portion 1e opens hingably about its bottom edge 1e &# 39 ;. it is noted that the top edge 1e &# 34 ; is not connected to frame member 7 , so that top edge 1e &# 34 ; may be moved outward from frame member 7 when opening front wall portion 1e . a bottom basin 3 with four upwardly extending lip walls 32 , 32a , 32b , 32c may be placed within the shower enclosure unit 1 at a lower edge of the latter . the bottom basin 3 is also composed of a water - resistant material , for example rubber or plastic . three upper vertical edges 41 , 42 and 43 of the lip walls 32a , 32b , 32c of bottom basin , define the top edges of basin 3 . the front , fourth upper edge 40 of bottom basin 3 opens up as explained hereinafter below , so the upper vertical edge 40 of front upwardly extending lip wall flap 32 of bottom basin 3 opens outward from a vertical position as shown in fig6 a , to a horizontal position as shown in fig6 c . to permit the floor level entry of wheelchairs or the feet of persons who have difficulty in raising the feet , into bottom basin 3 , there is provided opening wall portion 31 including a front portion 32 and first hinged portion flaps 33a and 33b , each flap 33a or 33b connected along diagonal axis edges 34a and 34b respectively , to further hinged flaps 35a and 35b including reciprocal joints such as snaps 36a and 36b , which joints 36a and 36b are connected to reciprocal joints means 37a and 37b . in one embodiment wherein flap 32 is sealingly connected to front curtain portion 1e flap 32 extends down to a horizontal position by the extension of triangular portions 33a and 35a so that they are coterminously stretched along axis 34a and 34b in an open position . the hinged portions 33a , 33b , 35a , 35b and flap 31 are made from a waterproof material to provide a watertight fit for bottom basin 3 . triangular hinged portion 33a and 33b are connected to triangular portion 35a and 35b by means of reciprocal joints 36a , 36b , 37a and 37b as shown . in another embodiment , it is anticipated that basin 3 can also be a self contained removable unit , which is placed within shower enclosure 1 above floor portion 1a . the shower enclosure unit i has conventional openable and sealable hole 4 for water entry and conventional openable and sealable hole 5 for water drainage . a hose with a shower head can be introduced through the hole 4 into the inner space 2 of the shower structure , and a drain hose can be connected with the drainage hole 5 . as further shown in fig1 the shower structure has a frame provided at the upper edge of the shower enclosure unit 1 and includes frame members or rods 6 , 7 , 8 , 9 , which rods are held up by hook attachment member 14 , which hook attachment member 14 is connected to the four corners formed by frame members or rods 6 , 7 , 8 and 9 by corresponding connecting inclined support rod members 10 , 11 , 12 and 13 respectively . inclined rods 10 , 11 , 12 and 13 extend upwardly at an angle relative to a central vertical axis of the shower enclosure unit 1 and are connected at their upper end with hook 14 . the shower structure in accordance with the present invention can therefore be suspended on the hook 14 to extend vertically . on the other hand , the shower enclosure unit 1 can be provided with an alternate conventional free standing pole ( not shown ). in this case , the shower structure can stand on a supporting surface , for example on a room floor , etc . as shown in fig4 for sealingly closing the regions of the dual zipper guides 23 and 24 , each dual zipper guide 23 and 24 is associated with a sealing element located at the inner side of the zipper . each sealing element includes two sealing strips 25 and 26 located at opposite side of the dual zipper and having a bulged leading portion . in the closed portion of the dual zipper shown in fig4 the bulged leading portions of the sealing strips 25 and 26 firmly abut against one another with partial compression and reliably seal the dual zipper guide 24 from a water leakage outwardly of the inner space through the dual zipper . in the embodiment shown in fig2 the bottom basin 3 &# 39 ; is removable from the lower part of the shower enclosure unit 1 &# 39 ;. therefore , in this embodiment , when front wall portion 1e &# 34 ;&# 39 ;, opens down , then flap 32 &# 39 ; also opens down . moreover , in the embodiment shown in fig2 drainage hole 5 &# 39 ;, which is closable by conventionally plugging or with a rotatable valve means , is located above the top edge of basin 3 &# 39 ;, since basin 3 &# 39 ; is a self standing , removable basin , which can be manually drained of water . as shown in the enlarged embodiment shown in fig5 the frame rods and can be constructed in a larger size to accomodate an larger inner space 2 &# 34 ;. however , when the shower structure is thus provided in an increased size , it becomes necessary to have a larger shower enclosure unit 1 &# 34 ; to accommodate the larger frame thus formed . therefore , in the embodiment shown in fig5 the shower structure unit 1 &# 34 ; can accommodate a person lying in a horizontal position , for example on a stretcher or gurney . in this embodiment , a larger basin must also be provided to accommodate the larger interior space 2 &# 34 ;. the invention is not limited to the details shown since various modifications and structural changes are possible without departing in any way from the spirit of the present invention . what is desired to be protected by letters patent is set forth in particular in the appended claims .
a portable collapsible shower structure for accommodating invalid persons has an expandable shower enclosure unit which extends substantially vertically in a working condition and limit an inner space for accommodating an invalid person , and a bottom which is sealingly connected with the shower enclosure unit to capture water during taking a shower and to prevent its spillage .