Abstract:
A suspension mechanism includes left and right external barrels whose upper ends have left and right ports and lower ends have left and right damper ports, respectively, wherein the left and right external barrels are pivotally connected to a chassis; left and right dampers with lower ends pivotally connected to left and right wheel support units pivotally connected to the chassis, respectively, wherein outer wall surfaces at the upper portions of the left and right dampers movably abut against inner wall surfaces at lower portions of the left and right external barrels through the left and right damper ports, with left and right adjustable spaces defined inside the left and right external barrels, and the left and right adjustable spaces communicating with the left and right ports and filled with oil, respectively; and a control valve connected to the left and right ports and adapted to control oil flow.

Description:
FIELD OF TECHNOLOGY 
     The present invention relates to suspension mechanisms, and more particularly, to a suspension mechanism capable of protecting a vehicle against vibration and lending lateral support to the vehicle to thereby prevent the vehicle from tumbling while taking a turn. 
     BACKGROUND 
     There is always a likelihood that a conventional vehicle will tumble while making a turn, for various reasons, such as speeding and a slippery road. The conventional vehicle making a turn maintains its balance mainly by the friction between the road surface and the wheels. 
     Accordingly, it is imperative to provide a suspension mechanism capable of protecting a vehicle against vibration and lending lateral support to the vehicle to thereby prevent the vehicle from tumbling while taking a turn. 
     SUMMARY 
     In view of the aforesaid drawbacks of the prior art, the inventor of the present invention conducted extensive researches and experiments according to the inventor&#39;s years of experience in the related industry, and finally developed a suspension mechanism capable of protecting a vehicle against vibration and lending lateral support to the vehicle to thereby prevent the vehicle from tumbling while taking a turn. 
     In order to achieve the above and other objectives, the present invention provides a suspension mechanism, comprising: a left external barrel provided with an upper end having a left port and a lower end having a left damper port and pivotally connected to a chassis; a right external barrel provided with an upper end having a right port and a lower end having a right damper port and pivotally connected to the chassis; a left damper with a lower end pivotally connected to left wheel support unit pivotally connected to the chassis, wherein an outer wall surface at an upper portion of the left damper movably abuts against an inner wall surface at a lower portion of the left external barrel through the left damper port, wherein a left adjustable space is defined inside the upper portion of the left external barrel, adapted to be in communication with the left port, and filled with oil; a right damper with a lower end pivotally connected to right wheel support unit pivotally connected to the chassis, wherein an outer wall surface at an upper portion of the right damper movably abuts against an inner wall surface at a lower portion of the right external barrel through the right damper port, wherein a right adjustable space is defined inside the upper portion of the right external barrel, adapted to be in communication with the right port, and filled with oil; and a control valve connected between the left port and the right port to control a flow of the oil. 
     As regards the suspension mechanism, two opposing sides of the left external barrel and two opposing sides of the right external barrel have a shaft each and thereby are pivotally connected to the chassis. 
     As regards the suspension mechanism, the shafts each have a shaft cap and a fixing shaft, wherein the fixing shafts are each fixed to the two opposing sides of the left external barrel and the two opposing sides of the right external barrel and pivotally disposed in the shaft caps, respectively. 
     Accordingly, the suspension mechanism of the present invention is capable of protecting a vehicle against vibration and lending lateral support to the vehicle to thereby prevent the vehicle from tumbling while taking a turn. 
    
    
     
       BRIEF DESCRIPTION 
       Objectives, features, and advantages of the present invention are hereunder illustrated with specific embodiments in conjunction with the accompanying drawings, in which: 
         FIG. 1  is a cross-sectional view of a preferred embodiment of the present invention; 
         FIG. 2  is a perspective view of the preferred embodiment of the present invention; and 
         FIG. 3  is a schematic view of the operation of the preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIG. 1  through  FIG. 3 , the present invention provides a suspension mechanism which comprises a left external barrel  1 , a right external barrel  2 , a left damper  3 , a right damper  4 , and a control valve  5 . As shown in  FIG. 1  through  FIG. 3 , the suspension mechanism of the present invention is for use with the front wheels of a vehicle. However, in practice, the suspension mechanism of the present invention can also be for use with the rear wheels of a vehicle. The upper end of the left external barrel  1  has a left port  11 . The left port  11  is a port at one end of a L-shaped pipe. A port at the other end of the L-shaped pipe is in communication with the upper end of the left external barrel  1 . The lower end of the left external barrel  1  has a left damper port  12 . A chassis  7  is pivotally connected between the two ends of the left external barrel  1 . The radial cross-section of the left external barrel  1  is round or of any other geometrical shape. The upper end of the right external barrel  2  has a right port  21 . The right port  21  is a port at one end of a L-shaped pipe. A port at the other end of the L-shaped pipe is in communication with the upper end of the right external barrel  2 . The lower end of the right external barrel  2  has a right damper port  22 . The chassis  7  is pivotally connected between the two ends of the right external barrel  2 . The radial cross-section of the right external barrel  2  is round or of any other geometrical shape. The left damper  3  has the same structure and operation mechanism as a conventional damper. The left damper  3  has a left barrel  31  and a left retractable rod  32 . The left retractable rod  32  is capable of protruding from and retracting into the left barrel  31 . A left receiving space  311  defined by and between the left barrel  31  and the left retractable rod  32  is filled with oil. The lower end of the left retractable rod  32  has a left pivotal connection hole  321  so as to be pivotally connected between two ends of a left wheel support unit  8 . One end of the left wheel support unit  8  is pivotally connected to the chassis  7 . The other end of the left wheel support unit  8  is pivotally connected to a left wheel  81 . The outer wall surface at the upper portion of the left barrel  31  movably abuts against the inner wall surface at the lower portion of the left external barrel  1  through the left damper port  12 . A left adjustable space  13  is defined by the top and lateral wall surfaces inside the upper portion of the left external barrel  1  and the outer top wall surface of the left damper  3 . The left adjustable space  13  is in communication with the left port  11  and filled with oil. The left adjustable space  13  and the left receiving space  311  are independent of each other but are not in communication with each other, and thus it is impossible for the oil inside the left adjustable space  13  to come into contact with the oil inside the left receiving space  311 . A left spring (not shown) fits around the left damper  3 . One end of the left spring is fixed to the lower portion of the left barrel  31 . The other end of the left spring is fixed to the left retractable rod  32 . The right damper  4  is identical to a conventional damper in terms of structure and operation mechanism. The right damper  4  has a right barrel  41  and a right retractable rod  42 . The right retractable rod  42  is capable of protruding from and retracting into the right barrel  41 . A right receiving space  411  is defined by and between the right barrel  41  and the right retractable rod  42  and filled with oil. The lower end of the right retractable rod  42  has a right pivotal connection hole  421  so as to be pivotally connected between the two end of a right wheel support unit  9 . One end of the right wheel support unit  9  is pivotally connected to the chassis  7 . The other end of the right wheel support unit  9  is pivotally connected to a right wheel (not shown). The outer wall surface at the upper portion of the right barrel  41  movably abuts against the inner wall surface of the lower portion of the right external barrel  2  through the right damper port  22 . A right adjustable space  23  is defined by the top and lateral wall surfaces inside the upper portion of the right external barrel  2  and the outer top wall surface of the right damper  4 . The right adjustable space  23  is in communication with the right port  21  and filled with oil. The right adjustable space  23  and the right receiving space  411  are independent of each other but are not in communication with each other, and thus it is impossible for the oil inside the right adjustable space  23  to come into contact with the oil inside the right receiving space  411 . A right spring (not shown) fits around the right damper  4 . One end of the right spring is fixed to the lower portion of the right barrel  41 . The other end of the right spring is fixed to the right retractable rod  42 . The two sides of the control valve  5  are connected to the left port  11  and the right port  21 , respectively, through a connection pipe  52  each. Hence, the control valve  5 , the connection pipes  52 , the left adjustable space  13  and the right adjustable space  23  are in communication with each other and filled with oil. Furthermore, the control valve  5  has therein an adjustable communication opening  51  for controlling the oil. 
     Referring to  FIG. 1  through  FIG. 3 , the adjustable communication opening  51  of the control valve  5  closes to prevent the oil from flowing while the vehicle is moving forward. At this point in time, since the control valve  5 , the connection pipes  52 , the left adjustable space  13  and the right adjustable space  23  are filled with the oil, both the left adjustable space  13  and the right adjustable space  23  are positioned at the same height because of the oil, so as to lend lateral support to the vehicle moving forward. 
     The adjustable communication opening  51  of the control valve  5  opens as soon as the vehicle takes a right turn. Since the vehicle taking a right turn always tilts rightward in order to balance itself, the right external barrel  2  presses on the right damper  4 ; at this point in time, since the adjustable communication opening  51  of the control valve  5  has opened, the right barrel  41  of the right damper  4  exerts an upward thrust on part of the oil in the right adjustable space  23  such that part of the oil is delivered to the left adjustable space  13  through the right port  21 , the connection pipe  52  on the right, the adjustable communication opening  51  of the control valve  5 , the connection pipe  52  on the left, and the left port  11 , and in consequence the right adjustable space  23  is lower than the left adjustable space  13 , causing the vehicle to tilt rightward to thereby prevent the vehicle from tumbling while taking a right turn. As indicated above, the vehicle is unlikely to tumble while taking a right turn, because the suspension mechanism of the present invention lends lateral support to the vehicle while the vehicle is taking a right turn. In addition, the suspension mechanism of the present invention is characterized in that the adjustable communication opening  51  of the control valve  5  controls how fast the vehicle tilts rightward such that the more widely the adjustable communication opening  51  of the control valve  5  opens, the faster the oil flows, and the faster the vehicle tilts rightward. 
     The adjustable communication opening  51  of the control valve  5  opens as soon as the vehicle takes a left turn. Since the vehicle taking a left turn always tilts leftward in order to balance itself, the left external barrel  1  presses on the left damper  3 ; at this point in time, since the adjustable communication opening  51  of the control valve  5  has opened, the left barrel  31  of the left damper  3  exerts an upward thrust on part of the oil in the left adjustable space  13  such that part of the oil is delivered to the right adjustable space  23  through the left port  11 , the connection pipe  52  on the left, the adjustable communication opening  51  of the control valve  5 , the connection pipe  52  on the right, and the right port  21 , and in consequence the left adjustable space  13  is lower than the right adjustable space  23 , causing the vehicle to tilt leftward to thereby prevent the vehicle from tumbling while taking a left turn. As indicated above, the vehicle is unlikely to tumble while taking a left turn, because the suspension mechanism of the present invention lends lateral support to the vehicle while the vehicle is taking a left turn. In addition, the suspension mechanism of the present invention is characterized in that the adjustable communication opening  51  of the control valve  5  controls how fast the vehicle tilts leftward such that the more widely the adjustable communication opening  51  of the control valve  5  opens, the faster the oil flows, and the faster the vehicle tilts leftward. 
     As indicated above, the suspension mechanism of the present invention is capable of protecting a vehicle against vibration by the left damper  3  and the right damper  4  and preventing the vehicle from tumbling by the control valve  5 , the left adjustable space  13  and the right adjustable space  23  while the vehicle is driven up and down a road. 
     Referring to  FIG. 1  through  FIG. 3 , the suspension mechanism of the present invention is advantageously characterized in that two shafts  6  are disposed on two opposite sides between the two ends of the left external barrel  1  and pivotally connected to the chassis  7 , respectively, and two other shafts  6  are disposed on two opposite sides between the two ends of the right external barrel  2  and pivotally connected to the chassis  7 , respectively. Hence, the chassis  7  can be easily connected to the suspension mechanism of the present invention. 
     Referring to  FIG. 1  through  FIG. 3 , the suspension mechanism of the present invention is also advantageously characterized in that the shafts  6  each have a shaft cap  61  and a fixing shaft  62 . The fixing shafts  62  are fixed to the two opposite sides between the two ends of the left external barrel  1 , fixed to the two opposite sides between the two ends of the right external barrel  2 , and disposed pivotally inside the shaft caps  61 , respectively. Hence, the suspension mechanism of the present invention can be easily connected to the shaft caps  61  and the chassis  7 . 
     The present invention is disclosed above by preferred embodiments. However, persons skilled in the art should understand that the preferred embodiments are illustrative of the present invention only, but should not be interpreted as restrictive of the scope of the present invention. Hence, all equivalent modifications and replacements made to the aforesaid embodiments should fall within the scope of the present invention. Accordingly, the legal protection for the present invention should be defined by the appended claims.