Abstract:
A foldable chair equipped with a utility side desk, which includes a seat frame and a desk frame foldably coupled with the seat frame, wherein the desk frame includes a pair of supporting arms pivotally connecting with a second front and back frame legs of the seat frame respectively, a pair of slider joints for pivotally coupling two inner ends of said two supporting arms with a first front and back frame legs of the seat frame, and a pair of pivot arms which are extending sidewardly from the seat frame pivotally coupling with two outer ends of the two supporting arms respectively. Therefore, the utility side desk is capable of serving as an extra side surface, which is adapted to be quickly and easily folded with the foldable chair into a compact unit for carriage and storage and unfolded for use.

Description:
BACKGROUND OF THE PRESENT INVENTION 
     1. Field of Invention 
     The present invention relates to a foldable chair, and more particularly to a foldable chair equipped with a utility side desk which is foldably and outwardly extended from the foldable chair and serves as an extra side surface, wherein the foldable chair can be quickly and easily folded into a compact unit for carriage and storage and unfolded for use. 
     2. Description of Related Arts 
     Referring to FIG. 1 of the drawings, a conventional portable chair comprises a foldable chair frame constructed by metal tubes and a chair seat B 1  made of durable fabric. The foldable chair frame A 1  comprises a plurality of construction tubes A 11  to construct a back frame A 2  and a seat frame A 3  for supporting the chair seat B 1 . The seat frame A 1  comprises a front pair, a back pair and two side pairs of the construction tubes, wherein each pair of the construction tubes are pivotally connected together where they cross so that the chair frame A 1  can be easily unfolded to provide a rigid cross-support for use and be folded up for storage. 
     Since such a conventional foldable chair can be easily and quickly unfolded for use and folded into a compact for carriage, a user can carry the foldable chair to everywhere such as campground or beach. However, the user may merely carry an extra foldable table in such a manner that the user can put his or her accessories such as drinks or magazines on the foldable table. It is inconvenience that the user has to carry one more item which is the foldable table to everywhere. Moreover, it is unreasonable that the user must purchase the extra foldable table just only equipped with the foldable chair. 
     SUMMARY OF THE PRESENT INVENTION 
     A main object of the present invention is to provide a foldable chair equipped with utility side desk which is foldably and outwardly from the foldable chair such that a user is able to put his or her accessories on the side desk. 
     Another object of the present invention is to provide a foldable chair with utility side desk, wherein the foldable chair can be quickly and easily folded into a compact unit for carriage and storage and unfolded for use. 
     Another object of the present invention is to provide a foldable chair with utility side desk which does not altering or complicating the original structural design of the chair frame of the foldable chair. 
     Another object of the present invention is to provide a foldable chair with utility side desk, wherein the structure of the side desk can be altered as a side pocket or a leg rest support arrangement according to the need of the user. 
     Accordingly, in order to accomplish the above objects, the present invention provides a foldable chair comprising a seat frame constructed to support a fabric seat thereon and a side desk frame for supporting a desk fabric thereon foldably and outwardly extended from the seat frame, wherein the seat frame comprises: 
     a pair of first and second front frame legs pivotally connected with each other in cross manner to form a “X” structure; 
     a pair of first and second back frame legs pivotally connected with each other in cross manner to form a “X” structure; 
     two pairs of side frame legs, each pair comprising a first side crossed leg and a second side crossed leg pivotally connected with each other in a cross manner to form a pivotal “X” structure; 
     a pair of front lower frame joints for pivotally connecting two lower ends of the two front frame legs with two lower front ends of the side frame legs respectively; 
     a pair of back lower frame joints for pivotally connecting two lower ends of the two back frame legs with two lower back ends of the side frame legs respectively; 
     a pair of front frame joints for pivotally connecting two upper ends of the two front frame legs with two upper front ends of the side frame legs respectively; 
     a pair of back upper frame joints for pivotally connecting two upper ends of the two back frame legs with two upper back ends of the side frame legs respectively; and 
     the side desk frame comprising a pair of foldable supporting arms pivotally connecting with the second front and back frame legs respectively, a pair of slider joints for pivotally coupling two inner ends of the two supporting arms with the first front and back frame legs, and a pair of pivot arms which are extending outwardly from the seat frame pivotally coupling with two outer ends of the two supporting arms respectively. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of a convention foldable chair. 
     FIG. 2 is a perspective view of a foldable chair with utility side desk according to a preferred embodiment of the present invention. 
     FIG. 3 is a front view of the foldable chair according to the above preferred embodiment of the present invention. 
     FIG. 4 is a partially front view of the foldable chair according to the above preferred embodiment of the present invention. 
     FIG. 5 is a perspective view of the slider joint of the foldable chair according to the above preferred embodiment of the present invention. 
     FIG. 6 is a partially front view of the support coupling means of the foldable chair according to the above preferred embodiment of the present invention. 
     FIG. 7 is a rear view of the foldable chair according to the above preferred embodiment of the present invention, illustrating the folded support coupling means. 
     FIG. 8 is a front view of the foldable chair in a folded state according to the above preferred embodiment of the present invention. 
     FIG. 9 illustrates a first alternative mode of the foldable chair according to the above preferred embodiment of the present invention, illustrating the foldable chair utilitized with a rear pocket. 
     FIG. 10 illustrates a second alternative mode of the foldable chair according to the above preferred embodiment of the present invention, illustrating the foldable chair utilized with a leg rest support arrangement. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to FIGS. 2 and 3 of the drawings, a foldable chair with utility a side desk according to a preferred embodiment of the present invention is illustrated. The foldable chair comprises a seat frame  10  and a back frame  30  constructed to support a fabric seat  1 A thereon. 
     The seat frame  10  comprises a pair of first and second front frame legs  111 ,  112  pivotally connected with each other in cross manner to form a “X” structure, a pair of first and second back frame legs  121 ,  122  pivotally connected with each other in cross manner to form a “X” structure, and two pairs of side frame legs  13 ,  14 , each pair comprising a first side crossed leg  131 ,  141  and a second side crossed leg  132 ,  142  pivotally connected with each other in a cross manner to form a pivotal “X” structure. 
     The seat frame  10  further comprises a pair of front frame joints  21 ,  22 , a pair of back frame joints  23 ,  24 , a pair of front lower frame joints  25 ,  26 , and a pair of back lower frame joints  27 ,  28 . 
     The pair of front upper frame joints  21 ,  22  are adapted for pivotally connecting two upper ends of the two front frame legs  111 ,  112  with two upper ends of the side frame legs  132 ,  142  respectively. The pair of back upper frame joints  23 ,  24  are adapted for pivotally connecting two upper ends of the two back frame legs  122 ,  121  with two upper back ends of the side frame legs  131 ,  141  respectively. The pair of front lower frame joints  25 ,  26  are adapted for pivotally connecting two lower ends of the two front frame legs  112 ,  111  with two lower front ends of the side frame legs  131 ,  141  respectively. The pair of back lower frame joints  27 ,  28  with lower back ends of the side frame legs  132 ,  142  respectively. 
     The back frame  30  comprises a pair of back frame legs  31 ,  32  slidably penetrating through the two back upper frame joints  23 ,  24  respectively wherein two lower ends of the two back frame legs  31 ,  32  are respectively extended downwardly to pivotally connected to the two back lower frame joints  27 ,  28 . 
     As shown in FIGS. 2 and 3, the foldable chair further comprises a side desk frame  40  foldable and sidewardly extended from the seat frame  10  for supporting a desk fabric  1 B thereon wherein the side desk frame  40  can be folded up when the seat frame  10  is folded up as shown in FIG.  8 . The side desk frame  40  comprises a pair of supporting arms  41 ,  42  pivotally connecting with the second front and back frame legs  112 ,  122  respectively, a pair of slider joints  51 ,  52  for pivotally coupling two inner ends  411 ,  421  of the two supporting arms  41 ,  42  with the first front and back frame legs  111 ,  121 , and a pair of pivot arms  43 ,  44 , which are extending outwardly from the seat frame  10 , pivotally coupling with two outer ends  412 ,  422  of the two supporting arms  41 ,  42  respectively. 
     According to the preferred embodiment, the two supporting arms  41 ,  42  are pivotally connected to lower portions of the second front and back frame legs  112 , 122  where they crossed respectively and the two inner ends  411 ,  421  of the two supporting arms  41 ,  42  are slidably connected to the lower portions of the first front and back frame legs  111 , 121  respectively. 
     Each slider joint  51 ,  52  comprises a slider body  511 ,  521  and a pivot wall  512 ,  522  integrally extended therefrom. The slider body  511 ,  521  has a slider hole  51   1 A,  521 A which has a diameter slightly larger than the respective first front and back frame legs  111 ,  121  and transversally extended through the slider body  511 ,  512  for the respective first front and back frame legs  111 ,  121  slidably passing through. The pivot walls  512 ,  522  of slider joints  51 ,  52  are pivotally connected to the inner ends  411 ,  421  of the supporting arms  41 ,  42 . 
     The two pivot arms  43 ,  44  are pivotally coupling with the two outer ends  412 ,  422  of the two supporting arms  41 ,  42  by means of a pair of coupling joints  61 ,  62  respectively wherein the desk fabric  1 B are adapted to be supported between the two pivot arms  43 ,  44 . 
     Each coupling joints  61 ,  62  comprises a first joint member  611 ,  621  and a second joint member  612 ,  622  slidably connected each other wherein the first joint member  611 ,  621  is firmly affixed to the outer end  414 ,  422  of the respective supporting arm  41 ,  42  and the second joint member  612 ,  622  is firmly affixed to an inner end of the respective pivot arm  43 ,  44 . 
     Each first joint member  611 ,  621  has a pair of pin-like protrusions  611 A,  621 A opposedly and outwardly extended from two sides thereof for slidably engaging with two sliding slots  612 A,  622 A provided on two side walls of the second joint member  612 ,  622 . Each sliding slot  612 A,  622 A has an enlarged head portion  6121 ,  6221  and an elongated tail portion  6122 ,  6222  in such a manner that when the protrusions  611 A,  621 A are slidably moved to the head portion  6121 ,  6221  of the sliding slot  612 A,  622 A, the pivot arms  43 ,  44  are freely rotated about the outer ends  412 ,  422  of the supporting arms  41 ,  42  respectively, and when the protrusions  611 A,  621 A are slidably moved to the tail portion  6122 ,  6222  of the sliding slot  612 A,  622 A, the pivot arms  43 ,  44  are securely engaged with the supporting arms  41 ,  42  respectively in a vertical position, so as to vertically hold the pivot arms  43 ,  44  in position. 
     According to the preferred embodiment, each of the first joint members  611 ,  621  further has a top end wall  611 B,  621 B integrally extended from a ceiling of the first joint member  611 ,  621  so as to limit the rotation angle of the pivot arm  43 ,  44  when the protrusions  611 A,  621 A of the first joint member  611 ,  621  are slid into the head portion  6121 ,  6221  of the sliding slot  612 A,  622 A of the second joint member  612 ,  622 . In other words, the pivot arms  43 ,  44  can only rotate in a downward movement, as shown in FIG. 7, and limit the upward rotation movement of the pivot arms  43 ,  44  by the top end wall  611 B,  621 B of the first joint members  611 ,  621  respectively. So, the user is able to fold up only the side desk frame  40  when it is not in use in order to save the space of the foldable chair. 
     FIGS. 9 and 10 illustrate the modifications of the side desk frame  40  to function as a rear pocket frame  40 ′ and a front leg rest support frame  40 ″ without altering the original structure of the foldable chair, wherein the rear pocket frame  40 ′ and the leg rest support frame  40 ″ have the same structural design of the side desk frame  40 . 
     Referring to FIG. 9, the rear pocket frame  40 ′ is rearwardly extended from the seat frame  10  for supporting a pocket fabric  1 B′ thereon wherein the pocket frame  40 ′ comprises a pair of supporting arms  41 ′,  42 ′ pivotally connecting with the second side frame legs  132 ′,  142 ′ respectively, a pair of slider joints  51 ′,  52 ′ for pivotally coupling two inner ends  411 ′,  421 ′ of the two supporting arms  41 ′,  42 ′ with the first side frame legs  131 ,  141 , and a pair of pivot arms  43 ′,  44 ′, which are extending rearwardly from the seat frame  10 , pivotally coupling with two outer ends  412 ′,  422 ′ of the two supporting arms  41 ′,  42 ′ respectively. So, the user is able to store his or her accessories such as magazines in the pocket fabric  1 B′ for convenience. 
     As shown in FIG. 10, the front leg rest support frame  40 ″ is frontwardly extended from the seat frame  10  for supporting a leg rest fabric  1 B″ thereon wherein the leg support frame  40 ″ comprises a pair of supporting arms  41 ″,  42 ″ pivotally connecting with the first side frame legs  131 ″,  141 ″ respectively, a pair of slider joints  51 ″,  52 ″ for pivotally coupling two inner ends  411 ′,  421  ′ of the two supporting arms  41 ′,  42 ′ with the second side frame legs  132 ,  142 , and a pair of pivot arms  43 ″,  44 ″, which are extending rearwardly from the seat frame  10 , pivotally coupling with two outer ends  412 ″,  422 ″ of the two supporting arms  41 ″,  42 ″ respectively. 
     It is worth to mention that since people trend to sit down with their legs bent, preferably, the pivot arm  43 ″,  44 ″ are inclinedly connected to the supporting arms  41 ″,  42 ″ in such a manner that the user&#39;s legs is capable of well supporting on the leg rest fabric  1 B″ naturally and comfortably.