Patent Publication Number: US-8528969-B2

Title: Class chair

Description:
FIELD OF THE INVENTION 
     The present invention relates to class chair, and particular to a class chair having removable rack and table frame so that the rest of the class chair can be piled up for saving space and cost during a transportation or storing. 
     DESCRIPTION OF THE PRIOR ART 
     Prior class chair having linked table and chairs are mainly designed for purpose of steady, durability, and high economical benefit with lower cost for both user and manufacturer. 
     However, most of conventional class chairs are made by welding. The firmly structure by welding can provide steady and durability, but the transportation space will cause highly cost to manufacture. 
     For that reason, some foldable chairs are developed for the purpose of saving the space during transportation or storing as well as the cost. However, such design will suffer issue of shaking after long term usage. The steady, durability, and carrying ability of the chair are not acceptable by user. 
     Therefore, to provide a chair which can fulfill the need of small transportation space for lowering the cost and satisfy user&#39;s request of steady, durability, and capability of being piled up is an urgent quest for the business. 
     SUMMARY OF THE PRESENT INVENTION 
     Accordingly, the present invention is to provide a class chair having removable rack and table frame so that the rest of the class chair can be piled up for saving space and cost during a transportation or storing. The primary object of the present invention is listed in the following. 
     1. To provide a class chair can be piled up for saving space and cost during transportation for manufacturer. 
     2. To provide a class chair can be piled up for saving store space for manufacturer and user. 
     3. To provide a class chair with simple assembling, durability, and steady carrying ability. 
     4. To provide a class chair can be easily and quickly assembled and disassembled for usage, transportation, or stored by manufacturer or user. 
     5. To provide a class chair having highly industry utilization and economical benefit. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a front view of the present invention. 
         FIG. 2  is a side view from a right side of the present invention. 
         FIG. 3  is a schematic view showing the assembling of the present invention. 
         FIG. 4  is a front view of a chair frame of the present invention. 
         FIG. 5  is a side view from the right of the chair frame of the present invention. 
         FIG. 6  is a side view from the left of the chair frame of the present invention. 
         FIG. 7  is a cross-section view through a  7 - 7  line in  FIG. 4 . 
         FIG. 8  is a schematic view showing a table frame of the present invention. 
         FIG. 9  is a top view showing the table frame of the present invention. 
         FIG. 10  is a side view from the right of the table frame of the present invention. 
         FIG. 11  is a schematic view showing a table plate of the present invention. 
         FIG. 12  is a side view from the right side of the table plate of the present invention. 
         FIG. 13  is a schematic view showing a rack of the present invention. 
         FIG. 14  is a side view from the left side of the rack of the present invention. 
         FIG. 15  is a top view showing the rack of the present invention. 
         FIG. 16  is a side view from a right side of the rack of the present invention. 
         FIG. 17  is a schematic view showing the piling of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     In order that those skilled in the art can further understand the present invention, a description will be provided in the following in details. However, these descriptions and the appended drawings are only used to cause those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims. 
     Referring to  FIGS. 1 and 2 , a preferable embodiment of a class chair according to the present invention is illustrated. The class chair includes a chair frame  1 , seat  2 , and a table  3 . Referring to  FIGS. 4 to 7 , the chair frame  1  has two curved foot frames  11  linking by four linking pipes  12  on upper portions of the foot frames  11 . Each foot frame  11  has two feet so that the chair frame  1  can stand still on the floor by four feet. The seat  2  is arranged to the chair frame  1 . A predetermined gap is formed between the linking pipes  12  to the tops of the foot frames  11 . The gap provides room for assembling a rack  4  and a table support  31  of the table  3 . 
     The linking pipe  12  has threaded holes  121  for fixing the rack  4 . Two support branches  122  are arranged between the front and the rear linking pipes  12 . A table retaining plate  13  is fixed to an inner side of one of the two lateral linking pipes  12 . The table retaining plate  13  has threaded hole for fixing a linking plate  32  of the table support  31 . 
     Referring to  FIGS. 8 to 12 , the table frame  31  has a horizontal frame on top for arranging the table  3  and two supports  311  and  312  extending downward from the horizontal frame. The support  311  is not perpendicular to the horizontal frame, while the support  312  is perpendicular to the horizontal frame. The bottom ends of the two supports  311  and  312  are linked by a linking plate  32 . Threaded holes corresponding to the chair frame  1  are formed to the linking plate  32 . 
     Referring to  FIGS. 13 to 16 , the rack  4  has four linking rods  41  extending upward. An assembling hole  42  opposite to the threaded hole  121  is formed to an upper end of the linking rod  41  so that the rack  4  can be arranged below the chair frame  1 . A front side of the rack  4  is downward inclined with a predetermined angle for conveniently receiving stuffs or being stepped by user&#39;s feet. A rear side thereof is upward inclined so as to prevent stuffs from dropping out of the rack  4 . 
     Through the removable table frame and the rack, the rack and the table frame can be piled and packed separately during stock, transportation, or putting away by user. The assembly of the chair frame and the seat can be piled on top of each other so as to save the space and cost efficiently as shown in  FIG. 17 . The class chair can also provide a steady and durable assembly to the user. 
     Therefore, the class chair of the present invention can achieve the following advancement. 
     1. The class chair can be piled up to save the transportation space and cost for manufacturer. 
     2. The class chair can be piled up to save the storing space for manufacturer or user. 
     3. Simple assembling, durability, and steady carrying are achieved. 
     4. The class chair can be easily and quickly assembled and disassembled for usage, transportation, or stored by manufacturer or user. 
     5. Highly industry utilization and economical benefit are achieved. 
     The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.