Abstract:
The present invention provides an improved chassis assembly structure for a griller. The lateral frames of the chassis assembly structure are provided with a rotary base for horizontal rotation an upper positioning rod is mounted at the top between lateral frames. A support structure for the chassis could be quickly assembled by joining the rotary base during assembly of the chassis. An upper positioning rod is combined, thus providing a major chassis structure. The present invention enables a user to assemble a frame of a chassis featuring time-saving and convenient assembly with greater efficiency.

Description:
CROSS-REFERENCE TO RELATED U.S. APPLICATIONS 
       [0001]    Not applicable. 
       STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
       [0002]    Not applicable. 
       NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENT 
       [0003]    Not applicable. 
       REFERENCE TO AN APPENDIX SUBMITTED ON COMPACT DISC 
       [0004]    Not applicable. 
       BACKGROUND OF THE INVENTION 
       [0005]    1. Field of the Invention 
         [0006]    The present invention relates generally to a griller, and more particularly to a griller which has an innovative chassis assembly structure. 
         [0007]    2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98 
         [0008]    The conventional large-sized grillers are typically comprised of a chassis, a stove and cover. The chassis is provided with an inner space for accommodating gas cans and other roasting utensils, making it possible to form an aesthetically pleasing griller structure. 
         [0009]    The main objective of the present invention is to provide an improved chassis structure of the aforementioned griller. A typical chassis structure is generally comprised of lateral plates and bottom plates. The lateral plates are fixed securely with pivot bolt bolts. However, it is observed from actual applications that, the assembly is time-consuming and very difficult due to complicated and scattered components, making it impossible to set up a framework for the installers or users, or for convenient applications. 
         [0010]    Thus, to overcome the aforementioned problems of the prior art, it would be an advancement in the art to provide an improved structure that can significantly improve efficacy. 
         [0011]    To this end, the inventor has provided the present invention of practicability after deliberate design and evaluation based on years of experience in the production, development and design of related products. 
       BRIEF SUMMARY OF THE INVENTION 
       [0012]    The enhanced efficacy of the present invention is as follows: 
         [0013]    Based upon an innovative structure, the lateral frames  10 ,  10 B are provided with rotary base  20  for horizontal rotation. An upper positioning rod  30  is mounted at the top between lateral frames  10 ,  10 B. A support structure for chassis A could be quickly assembled by joining the rotary base  20  during assembly of chassis A. Then, an upper positioning rod  30  is assembled, thus providing a major chassis A structure. As compared with the conventional structure described in the prior art, the present invention enables users to assemble a frame of chassis A featuring time-saving and convenient assembly with higher efficiency. 
         [0014]    Moreover, the rotary base  20  could be folded into the lateral frames  10 ,  10 B, such that the quantity and volume of removable components could be further reduced for convenient and space-saving applications. 
         [0015]    Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0016]      FIG. 1  shows an exploded perspective view of chassis of the present invention. 
           [0017]      FIG. 2  shows perspective views comparing the rotary base of the present invention in a shrunken state and expanded state. 
           [0018]      FIG. 3  shows an assembled perspective view of chassis of the present invention from the front. 
           [0019]      FIG. 4  shows an assembled perspective view of local components of chassis of the present invention. 
           [0020]      FIG. 5  shows an exploded perspective view of the combination of curved faceplate and lateral frame of the present invention. 
           [0021]      FIG. 6  shows an assembled perspective view of the combination of rotary ends of two rotary bases. 
           [0022]      FIG. 7  shows the second assembled perspective view of chassis of the present invention from the rear. 
           [0023]      FIG. 8  shows a top plan view of application of the chassis top complete with a stove. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0024]    The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings. 
         [0025]      FIGS. 1 ,  2  and  3  depict preferred embodiments of an improved chassis assembly structure of the griller of the present invention. The embodiments are provided only for explanatory purpose of the patent claims. 
         [0026]    The chassis assembly structure comprises two lateral frames  10 ,  10 B, arranged vertically at two opposite surfaces of chassis A. With two rectangular plates, these two lateral frames  10 ,  10 B are provided with an accommodating space  13  at inner side. A faceplate  60  is placed vertically at either side of two lateral frames  10 ,  10 B, thus making it aesthetically pleasing and more reliable. A “         -shaped” assembly portion  11  is mounted internally at a preset location of lateral frames  10 ,  10 B, and a through groove  111  is formed onto the wall of assembly portion  11  opposite from two lateral frame  10 ,  10 B. In addition, a roller  12  is mounted at bottom of two lateral frames  10 ,  10 B for convenient movement. 
         [0027]    A rotary base  20  is placed separately at the bottom of one or two lateral frames  10 ,  10 B. One end of said rotary base  20  is fastened via a pivot bolt  21  at the bottom of accommodating space  13  of two lateral frames  10 ,  10 B. A rotary end  22  is defined at the other end of the rotary base  20 . The rotary base  20  rotates transversely, thus providing a support for the bottom of chassis A. In this preferred embodiment, a curved faceplate  50  is fixed at the included angle of two lateral frames  10 ,  10 B and the rotary base  20 , of which the curved faceplate  50  has a vertical and horizontal surfaces. At the bottom of the vertical surface, there is a positioning portion  53 , which is located oppositely to fixing portions  25 ,  25 B of the rotary base  20 . So, a fixture  26  is assembled through the positioning portion  53  of curved faceplate  50 , and then locked onto the rotary end  22  of rotary base  20 . Moreover, the horizontal surface of curved faceplate  60  is made of a flat plate with an inclined angle, while a recessed assembly end  52  is defined at the extension end. The assembly end  52  is suspended by the through groove  111  of assembly portion  11  of either lateral frame  10  or  10 B, such that the rotary base  20  could be positioned stably at an included angle. In addition, the vertical surface of curved faceplate  50  is provided with a horizontal face  51  for accommodating articles more efficiently. When two rotary bases  20  are arranged together, the rotary end  22  of two rotary bases  20  is fitted with male and female joint portions  23 ,  24  for positioning, where the fixing portions  25 ,  25 B are placed at preset location on the top of male and female joint portions  23 ,  24 , and also provided with female screws. After male and female joint portions  23 ,  24  are connected, a threaded fixture  26  is locked into the fixing portion  25 ,  25 B, such that two lateral frames  10 ,  10 B and two rotary bases  20  are fastened securely. 
         [0028]    At least an upper positioning rod  30  is assembled transversely via a screw bolt onto at least one side of the top of two lateral frames  10 ,  10 B, such that two end surfaces of the upper positioning rod  30  are fixed at a top surface of two lateral frames  10 ,  10 B. A reinforcement plate  40  is mounted vertically between the upper positioning rod  30  and rotary base  20 , to strengthen the overall frame of chassis A. 
         [0029]    Based upon the above-specified structure, the present invention is operated as described herein. When chassis A is to be assembled, the rotary base  20  of two lateral frames  10 ,  10 B, with the help of pivot bolt  21 , enables the rotary end  22  of rotary base  20  to be extended by rotation from the accommodating space  13  and positioned at one side (shown in  FIG. 2 ). The male and female joint portions  23 ,  24  of the rotary end  22  of rotary base  20  are connected, and also fastened via preset fixture  26  (e.g. bolt and nut) onto fixing portions  25 ,  25 B (shown in  FIG. 6 ), such that two lateral frames  10 ,  10 B and two rotary bases  20  are positioned securely. At least an upper positioning rod  30  is arranged transversely via screw bolt onto at least one side of the top of two lateral frames  10 ,  10 B, thus forming a 3D reference structure. A reinforcement faceplate  60  is horizontally installed between two lateral frames  10 ,  10 B, and also a reinforcement plate  40  is vertically installed between the upper positioning rod  30  and rotary base  20 , to strengthen the overall frame of chassis A. A curved faceplate  50  is placed at an included angle between two lateral frames  10 ,  10 B and rotary base  20 . The assembly end  52  is suspended by the through groove  111  of assembly portion  11  of two lateral frames  10 ,  10 B (shown in  FIG. 5 ), such that the positioning portion  53  is locked into fixing portions  25 ,  25 B of rotary base  20 . A rotary base  20  is enabled to be positioned stably at an included angle (shown in  FIG. 4 ). 
         [0030]    When chassis A is to be removed, the positioning portion  53  of curved faceplate  50  needs to dismantle the fixture  26  from the fixing portions  25 ,  25 B of rotary base  20 . The curved faceplate  50  faces upwards, such that the assembly end  52  is separated from through groove  111  of two lateral frames  10 ,  10 B. Then, vertical faceplate  60  and reinforcement plate  40  are removed from two lateral frames  10 ,  10 B and upper positioning rod  30 , while two ends of upper positioning rod  30  are disengaged from the top of two lateral frames  10 ,  10 B. After the fixture  26  of two rotary bases  20  are loosened from the rotary end  22 , the male and female joint portions  23 ,  24  of rotary ends  22  are separated horizontally, such that the rotary base  20  is placed into the accommodating space  13  of two lateral frames  10 ,  10 B via pivot bolt  21 . 
         [0031]    Referring to  FIG. 8 , chassis A of the present invention is equipped with a stove  70  at the top surface for a complete griller. An inner space  13  of chassis A could accommodate gas cans, while the stove  70  of chassis A can provide space for grilling tools. 
         [0032]    Additionally, male and female joint portions  23 ,  24  of the rotary end  22  of two rotary bases  20  could be positioned using beads or other flexible snaps.