Patent Publication Number: US-11047407-B2

Title: Quick release connecting device

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a continuation-in-part patent application of U.S. application Ser. No. 16/224,841 filed on Dec. 19, 2018, the entire contents of which are hereby incorporated by reference for which priority is claimed under 35 U.S.C. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a quick release connecting device, and more particularly, to a quick release connecting device that enables convenient and repeated assembling and separation of a circuit board, a drawer, or a window to and from a corresponding rack, chassis, cabinet or window frame. 
     2. Description of the Related Art 
     To enable convenient assembling and fastening of a circuit board to a rack, and to enable easy disassembling of the circuit board from the rack when necessary, a quick release mechanism is usually provided on the circuit board or the rack. Various types of quick release mechanisms are known, and each type of circuit board has a corresponding quick release mechanism designed for it. To enable two mating objects, such as the circuit board and the rack, to be repeatedly assembled to and separated from each other in a quick and convenient manner, it is desirable to develop an improved quick release connecting device that includes means to assist in pushing away a first one of the two mating objects, so that the second object can be easily pulled out of the first object. 
     BRIEF SUMMARY OF THE INVENTION 
     In view that the prior art quick release mechanisms are not perfect for use, it is tried by the inventor to develop an improved quick release connecting device to enable convenient and repeated assembling and separation of a circuit board, a drawer, a window, etc. to and from a corresponding rack, chassis, cabinet, window frame, etc. 
     A primary object of the present invention is to provide a quick release connecting device that includes an actuating retainer and a fixing member limitedly movably assembled to each other, so that a second object, such as a circuit board, a drawer or a window, detachably connected to a first object, such as a rack, a chassis, a cabinet or a window frame, via the actuating retainer and the fixing member can be conveniently and repeatedly assembled to and separated from each other. 
     To achieve the above and other objects, the quick release connecting device according to a preferred embodiment of the present invention includes an actuating retainer having an internal receiving space and a retaining section for detachably engaging with a first object; a fixing member including a body portion movably associated with the receiving space and a pivot portion formed on the body portion for detachably connecting with a second object; and pin connection means connecting the body portion to the receiving space for the actuating retainer and the fixing member to move relative to each other within a limited range. Or, according to another operable embodiment, the actuating retainer includes at least one first push section, a body portion, and a retaining section for detachably engaging with a first object; the fixing member internally defines a receiving space and includes a pivot portion formed on an outer side of the receiving space; the body portion of the actuating retainer is movably received in the receiving space of the fixing member, and the pivot portion is used to movably connect to a second object; and the pin connection means enables connection of the receiving space of the fixing member to the body portion of the actuating retainer, such that the actuating retainer and the fixing member are movable relative to each other within a limited range. Further, the fixing member includes a second push section having a first push part or a second push part; the first push part or the second push part is able to push against a third object; and the push of the second push section against the third object causes a lever displacement, a rotational displacement, or a limiting displacement of the quick release connecting device, so as to release, fasten, forward move or backward move the quick release connecting device. 
     To achieve the above and other objects, the quick release connecting device according to another preferred embodiment of the present invention includes an actuating retainer and a fixing member movably assembled to the actuating retainer. The fixing member includes a pivot portion and a pivot member movably mounted to the pivot portion; and the pivot member is coupled with a second object. 
     In the quick release connecting device according to the other preferred embodiment of the present invention, the fixing member can include a limiting section and the pivot member can include a corresponding limiting section, such that the limiting section and the corresponding limiting section limit or stop each other at a specific location when the fixing member is moved or rotated. 
     In the quick release connecting device according to the other preferred embodiment of the present invention, the pivot member or the pivot portion can include a shaft. The shaft can be movably assembled to the pivot member or the pivot portion, integrally formed with the pivot member or the pivot portion, or fixedly assembled to the pivot member or the pivot portion. And, the pivot member, the pivot portion or the fixing member is connected to the shaft via a second pin connection means in the case the shaft is assembled to the pivot member or the pivot portion. 
     In the quick release connecting device according to the other preferred embodiment of the present invention, the fixing member, the pivot portion or the pivot member can have an elastic element fitted thereon. Two ends of the elastic element are separately pressed against the pivot member and the fixing member of the quick release connecting device or separately pressed against the fixing member of the quick release connecting device and the second object, such that the fixing member under a spring force of the elastic element is either automatically sprung back to its original position or limited to a fixed position. 
     In the quick release connecting device according to the other preferred embodiment of the present invention, the fixing member can include a limiting section and the second object can include a corresponding limiting section, such that the limiting section and the corresponding limiting section limit or stop each other at a specific location when the fixing member is moved or rotated. 
     In the quick release connecting device according to the other preferred embodiment of the present invention, the pivot member can have a weldable surface, which can be heated and welded to the second object. 
     In the quick release connecting device according to the other preferred embodiment of the present invention, the pivot member can have a portion that is deformable under an external force applied thereto, so that the deformed portion of the pivot member is abutted on or interfered with the second object. 
     In the quick release connecting device according to the other preferred embodiment of the present invention, an elastic member, a friction-increasing member or a friction-decreasing member can be further provided. The elastic member, the friction-increasing member or the friction-decreasing member can be disposed between the fixing member and the pivot portion, between the fixing member and the pivot member, between the pivot portion and the second object, between the pivot portion and the pivot member, between pivot member and the second object, or between the fixing member and the second object. 
     To achieve the above and other objects, the quick release connecting device according to a further preferred embodiment of the present invention includes an actuating retainer and a fixing member movably assembled to the actuating retainer. The fixing member includes a pivot portion and a pivot member movably mounted to the pivot portion; and the pivot member is coupled with a second object. The pivot portion or the pivot member includes a shaft, and the shaft can be movably assembled to the pivot member or the pivot portion, integrally formed with the pivot member or the pivot portion, or fixedly assembled to the pivot member or the pivot portion. 
     In the quick release connecting device according to the further preferred embodiment of the present invention, the fixing member can include a limiting section and the pivot member can include a corresponding limiting section; such that the limiting section and the corresponding limiting section limit or stop each other at a specific location when the fixing member is moved or rotated. 
     In the quick release connecting device according to the further preferred embodiment of the present invention, the pivot member, the pivot portion or the fixing member can be connected to the shaft via a second pin connection means in the case the shaft is assembled to the pivot member or the pivot portion. 
     In the quick release connecting device according to the further preferred embodiment of the present invention, the fixing member, the pivot portion or the pivot member can have an elastic element fitted thereon. Two ends of the elastic element are separately pressed against the pivot member and the fixing member of the quick release connecting device or separately pressed against the fixing member of the quick release connecting device and the second object, such that the fixing member under a spring force of the elastic element is either automatically sprung back to its original position or limited to a fixed position. 
     In the quick release connecting device according to the further preferred embodiment of the present invention, the fixing member can include a limiting section and the second object can include a corresponding limiting section, such that the limiting section and the corresponding limiting section limit or stop each other at a specific location when the fixing member is moved or rotated. 
     In the quick release connecting device according to the further preferred embodiment of the present invention, the pivot member can have a weldable surface, which can be heated and welded to the second object. 
     In the quick release connecting device according to the further preferred embodiment of the present invention, the pivot member can have a portion that is deformable under an external force applied thereto, so that the deformed portion of the pivot member is abutted on or interfered with the second object. 
     In the quick release connecting device according to the further preferred embodiment of the present invention, an elastic member, a friction-increasing member or a friction-decreasing member can be further provided. The elastic member, the friction-increasing member or the friction-decreasing member can be disposed between the fixing member and the pivot portion, between the fixing member and the pivot member, between the pivot portion and the second object, between the pivot portion and the pivot member, between pivot member and the second object, or between the fixing member and the second object. 
     To achieve the above and other objects, the quick release connecting device according to a still further preferred embodiment of the present invention includes an actuating retainer and a fixing member movably assembled to the actuating retainer. The fixing member includes a pivot portion and a pivot member movably mounted to the pivot portion. A floating amount is allowable between the quick release connecting device and the second object, between the pivot portion and the pivot member, between the fixing member and the second object, between the fixing member and the pivot member, or between different angular positions of the fixing member. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the fixing member can include a limiting section and the pivot member can include a corresponding limiting section, such that the limiting section and the corresponding limiting section limit or stop each other at a specific location when the fixing member is moved or rotated. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the pivot member or the pivot portion can include a shaft. The shaft can be movably assembled to the pivot member or the pivot portion, integrally formed with the pivot member or the pivot portion, or fixedly assembled to the pivot member or the pivot portion. And, the pivot member, the pivot portion or the fixing member can be connected to the shaft via a second pin connection means in the case the shaft is assembled to the pivot member or the pivot portion. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the fixing member, the pivot portion or the pivot member can have an elastic element fitted thereon. Two ends of the elastic element are separately pressed against the pivot member and the fixing member of the quick release connecting device or separately pressed against the fixing member of the quick release connecting device and the second object, such that the fixing member under a spring force of the elastic element is either automatically sprung back to its original position or limited to a fixed position. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the pivot portion or the pivot member can include a shaft, and the shaft can be movably assembled to the pivot portion or the pivot member, integrally formed with the pivot portion or the pivot member, or fixedly assembled to the pivot member or the pivot portion. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the fixing member can include a limiting section and the second object can include a corresponding limiting section, such that the limiting section and the corresponding limiting section limit or stop each other at a specific location when the fixing member is moved or rotated. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the pivot member can have a weldable surface, which can be heated and welded to the second object. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the pivot member can have a portion that is deformable under an external force applied thereto, so that the deformed portion of the pivot member is abutted on or interfered with the second object. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, an elastic member, a friction-increasing member or a friction-decreasing member can be further provided. The elastic member, the friction-increasing member or the friction-decreasing member can be disposed between the fixing member and the pivot portion, between the fixing member and the pivot member, between the pivot portion and the second object, between the pivot portion and the pivot member, between pivot member and the second object, or between the fixing member and the second object. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the floating amount allowable between the quick release connecting device and the second object, between the pivot portion and the pivot member, between the fixing member and the second object, between the fixing member and the pivot member, or between different angular positions of the fixing member can be a vertically pivotal floating amount. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the floating amount allowable between the quick release connecting device and the second object, between the pivot portion and the pivot member, between the fixing member and the second object, between the fixing member and the pivot member, or between different angular positions of the fixing member can be a horizontally pivotal floating amount. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the floating amount allowable between the quick release connecting device and the second object, between the pivot portion and the pivot member, between the fixing member and the second object, between the fixing member and the pivot member, or between different angular positions of the fixing member can be a vertically linear floating amount. 
     In the quick release connecting device according to the still further preferred embodiment of the present invention, the floating amount allowable between the quick release connecting device and the second object, between the pivot portion and the pivot member, between the fixing member and the second object, between the fixing member and the pivot member, or between different angular positions of the fixing member can be a horizontally linear floating amount. 
     To use the quick release connecting device of the present invention, first movably connect the pivot portion of the fixing member to the second object, such as a circuit board, a drawer or a window. Since the actuating retainer and the fixing member are movably assembled to each other, at least one of them can be quickly detachably engaged with at least a first object, such as a chassis, a rack, a cabinet or a window frame. More specifically, the retaining section of the actuating retainer and/or the second push section of the fixing member can be quickly detachably engaged with the first object to thereby quickly connect the second object to the first object. On the other hand, to separate the second object from the first object, simply push the first push section for the retaining section to disengage from the first object and pivotally turn the fixing member for the second push section to push away the first object, and the second object is easily separated from the first object. Therefore, with the quick release connecting device of the present invention, the second object can be repeatedly quickly assembled to and separated from the first object. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein 
         FIG. 1  is an assembled perspective view of a quick release connecting device according to a first preferred embodiment of the present invention. 
         FIG. 2  is an exploded view of  FIG. 1 . 
         FIG. 3  is a partially sectioned front view of  FIG. 1 . 
         FIG. 4  is a sectional view taken along line A-A of  FIG. 3 . 
         FIG. 5  is an assembled front view of a first variant of the quick release connecting device according to the first preferred embodiment of the present invention, showing it further includes a hand push section. 
         FIG. 6  is an assembled perspective view of a second variant of the first preferred embodiment of the present invention. 
         FIG. 7  is an exploded view of  FIG. 6 . 
         FIG. 8  is a partially sectioned front view of  FIG. 6 . 
         FIG. 9  is a partially sectioned front view of a third variant of the first preferred embodiment of the present invention, showing two first push sections are included in the quick release connecting device. 
         FIG. 10  is an assembled partially sectioned front view of a quick release connecting device according to a second preferred embodiment of the present invention. 
         FIG. 11  is an assembled perspective view of the quick release connecting device according to the second preferred embodiment of the present invention. 
         FIG. 12  is an assembled partially sectioned front view of a variant of the second preferred embodiment of the present invention, showing an elastic plate and a different retaining section are included in the quick release connecting device. 
         FIG. 13A  shows the quick release connecting device according to the first preferred embodiment of the present invention is connected to two objects and can be operated to quickly release the two objects from each other. 
         FIG. 13B  shows the quick release connecting device according to the first preferred embodiment of the present invention is connected to two objects and can be operated to quickly release the two objects from each other. 
         FIG. 13C  shows the quick release connecting device according to the first preferred embodiment of the present invention is connected to two objects and can be operated to quickly release the two objects from each other. 
         FIG. 13D  shows the quick release connecting device according to the first preferred embodiment of the present invention is connected to two objects and can be operated to quickly release the two objects from each other. 
         FIG. 14A  shows the quick release connecting device according to the second preferred embodiment of the present invention is connected to two objects and can be operated to quickly release the two objects from each other.  FIG. 14B  shows the quick release connecting device according to the second preferred embodiment of the present invention is connected to two objects and can be operated to quickly release the two objects from each other. 
         FIG. 14C  shows the quick release connecting device according to the second preferred embodiment of the present invention is connected to two objects and can be operated to quickly release the two objects from each other. 
         FIG. 14D  shows the quick release connecting device according to the second preferred embodiment of the present invention is connected to two objects and can be operated to quickly release the two objects from each other. 
         FIG. 15  is an exploded perspective view of a quick release connecting device according to a third preferred embodiment of the present invention. 
         FIG. 16A  is an exploded view of a quick release connecting device without the second push section according to a fourth preferred embodiment of the present invention. 
         FIG. 16B  is an assembled view of a quick release connecting device without the second push section according to a fourth preferred embodiment of the present invention. 
         FIG. 16C  is an assembled top view of a quick release connecting device without the second push section according to a fourth preferred embodiment of the present invention. 
         FIG. 17  is an assembled top view of a quick release connecting device without the second push section according to a fifth preferred embodiment of the present invention. 
         FIG. 18  shows a quick release connecting device according to a sixth preferred embodiment of the present invention. 
         FIG. 19  shows a quick release connecting device according to a sixth preferred embodiment of the present invention. 
         FIG. 20  shows a quick release connecting device according to a seventh preferred embodiment of the present invention. 
         FIG. 21  shows a quick release connecting device according to a seventh preferred embodiment of the present invention. 
         FIG. 22  shows a quick release connecting device without the second push section according to an eighth preferred embodiment of the present invention. 
         FIG. 23  shows different configurations available for a mounting section provided on a second object, which is to be connected to the quick release connecting device according to the eighth preferred embodiment of the present invention. 
         FIG. 24  shows a quick release connecting device without the second push section according to a ninth preferred embodiment of the present invention that allows for a vertically pivotal floating amount. 
         FIG. 25  shows the floating fixing member of the quick release connecting device without the second push section according to the ninth preferred embodiment of the present invention that allows for a horizontally pivotal floating amount. 
         FIG. 26  shows the floating fixing member of the quick release connecting device without the second push section according to the ninth preferred embodiment of the present invention that allows for a vertically linear floating amount. 
         FIG. 27  shows the floating fixing member of the quick release connecting device without the second push section according to the ninth preferred embodiment of the present invention that allows for a horizontally linear floating amount. 
         FIG. 28  shows a quick release connecting device without the second push section according to a tenth preferred embodiment of the present invention. 
         FIG. 29  shows a quick release connecting device without the second push section according to an eleventh preferred embodiment of the present invention. 
         FIG. 30  shows a quick release connecting device without the second push section according to a twelfth preferred embodiment of the present invention. 
         FIG. 31  shows a quick release connecting device without the second push section according to a thirteenth preferred embodiment of the present invention. 
         FIG. 32  shows a quick release connecting device without the second push section according to a fourteenth preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The present invention will now be described with some preferred embodiments thereof and by referring to the accompanying drawings. For the purpose of easy to understand, elements that are the same in the preferred embodiments are denoted by the same reference numerals. 
       FIGS. 1 to 9  show a quick release connecting device according to a first preferred embodiment of the present invention, which is configured to enable limited slide, i.e. to slide within a limited range; and  FIGS. 10 to 12  show a quick release connecting device according to a second preferred embodiment of the present invention, which is configured to enable limited rotation, i.e. to rotate within a limited angle. As shown, in both of the first and second preferred embodiments, the quick release connecting device of the present invention includes an actuating retainer  1  and a fixing member  2  movably assembled to the actuating retainer  1 . The actuating retainer  1  can be made of a plastic material or a metal material; it internally defines a receiving space  11  and includes a retaining section  12  for detachably engaging with a first object  5  and at least one first push section  14 . The fixing member  2  can be made of a plastic material or a metal material; it includes a body portion  21  and a pivot portion  22  formed on an outer end of the body portion  21 . The body portion  21  has an inner end movably associated with the receiving space  11  of the actuating retainer  1 ; and the pivot portion  22  is located outside the receiving space  11  for detachably connecting with a second object  6 . The first push section  14  can be a protrusion outward projected from any side of the actuating retainer  1 . As shown in  FIG. 13B , by applying a force against the first push section  14 , the actuating retainer  1  can be moved to release the retaining section  12  from the first object  5 , allowing the second object  6  to separate from the first object  5 . The quick release connecting device according to the first and the second preferred embodiment of the present invention further include pin connection means  3 . The pin connection means  3  enables connection of the body portion  21  of the fixing member  2  to the receiving space  11  of the actuating retainer  1 , such that the actuating retainer  1  and the fixing member  2  in the first and the second preferred embodiment are slidable and rotatable, respectively, relative to each other within a limited range and angle. The quick release connecting device according to the first and the second preferred embodiment of the present invention can further include an elastic element  4 , which is disposed in the receiving space  11  of the actuating retainer  1 , or can be disposed at a selected position, with an end pressed against an inner wall surface of the receiving space  11  and another opposite end against the body portion  21  of the fixing member  2 . The elastic element  4  enables and controls limited sliding or rotation of the actuating retainer  1  and the fixing member  2  relative to each other, and can elastically push the actuating retainer  1  and the fixing member  2  back to their original positions. 
     Please refer to  FIG. 5  that is an assembled front view showing a first variant of the first preferred embodiment of the present invention further includes a hand push section  24  provided on the body portion  21  of the fixing member  2 . The hand push section  24  can be a protrusion downward projected from a lower side of the body portion  21 . The hand push section  24  and the first push section  14  are preferably directed to the same direction. In  FIG. 5 , the hand push section  24  and the first push section  14  are illustrated as directing downward. With this arrangement, a user may conveniently move the actuating retainer  1  toward the fixing member  2  by pressing one finger, such as the thumb, against an axially outer side (i.e. the left side in the drawing) of the first push section  14  while pressing another finger, such as the index finger, against an axially outer side (i.e. the right side in the drawing) of the hand push section  24 . 
     Please refer to  FIGS. 1 to 4 , in which the quick release connecting device according to the first preferred embodiment of the present invention is shown. As shown, in the first preferred embodiment, the actuating retainer  1  and the fixing member  2  are held to each other via the pin connection means  3  to allow limited sliding of them relative to each other, and accordingly, the retaining section  12  is slidably engaged with or released from the first object  5 . More specifically, the actuating retainer  1  is internally provided with a pin connection slot  13 , which communicates with the receiving space  11 , and the pin connection means  3  is located in the pin connection slot  13 . The pin connection slot  13  can be a long slide slot  131  formed on one or two lateral walls of the receiving space  11 . When the pin connection means  3  slides in the long slide slot  131 , the actuating retainer  1  and the fixing member  2  are brought to slide relative to each other within a limited range.  FIGS. 6 to 8  show a second variant of the quick release connecting device according to the first preferred embodiment of the present invention. In the second variant, the body portion  21  of the fixing member  2  is formed with a long slide hole  211 , which is communicable with the receiving space  11 , and the pin connection means  3  is slidable in the long slide hole  211  to thereby bring the actuating retainer  1  and the fixing member  2  to slide relative to each other within a limited range. 
     Please refer to  FIGS. 10 to 12 , in which the quick release connecting device according to the second preferred embodiment of the present invention is shown. As shown, in the second preferred embodiment, the actuating retainer  1  and the fixing member  2  are held to each other via the pin connection means  3  to allow limited rotating of them relative to each other, and accordingly, the retaining section  12  is rotatably engaged with or released from the first object  5 . More specifically, the actuating retainer  1  is also internally provided with a pin connection slot  13 , which communicates with the receiving space  11 , and the pin connection means  3  is located in the pin connection slot  13 . According to an operable embodiment, the pin connection slot  13  can be a locating hole  132  formed on one or two lateral walls of the receiving space  11 . When the pin connection means  3  rotates in the locating hole  132 , the actuating retainer  1  and the fixing member  2  are brought to rotate relative to each other within a limited angle. 
     In the first preferred embodiment, as can be seen in  FIGS. 2 and 4 , and in the second preferred embodiment, as can be seen in  FIGS. 10 and 12 , the pin connection means  3  can include a cylindrical pin  31  integrally formed with or additionally assembled to the body portion  21  of the fixing member  2 , and a pin holding hole  32  formed on the body portion  21  of the fixing member  2 . The cylindrical pin  31  is inserted in, snapped fitted in, riveted to, expansion-fitted in, glued to or screwed into the pin holding hole  32 . Alternatively, the pin connection means  3  can include a cylindrical pin  31  integrally formed with or additionally assembled to the actuating retainer  1 , and a pin holding hole  32  formed on the body portion  21  of the fixing member  2 . Similarly, the cylindrical pin  31  is inserted in, snapped fitted in, riveted to, expansion-fitted in, glued to or screwed into the pin holding hole  32 . By transversely and slidably setting the cylindrical pin  31  of the pin connection means  3  in the long slide slot  131  as in the first preferred embodiment, or by transversely and rotatably setting the cylindrical pin  31  of the pin connection means  3  in the locating hole  132  as in the second preferred embodiment, it is able to achieve the limited sliding or the limited rotation, respectively, of the actuating retainer  1  and the fixing member  2  relative to each other. Alternatively, in the second variant of the first preferred embodiment as shown in  FIGS. 6 and 7 , the pin connection means  3  includes a cylindrical pin  31  integrally formed with or additionally assembled to the actuating retainer  1  to transversely extend through the receiving space  11 , and at least one pin holding hole  32  preferably formed on the actuating retainer  1  to communicate with the receiving space  11 . Again, the cylindrical pin  31  is inserted in, snapped fitted in, riveted to, expansion-fitted in, glued to or screwed into the pin holding hole  32 . 
     Please refer to  FIGS. 1 to 12 . In both of the first and the second preferred embodiment, the retaining section  12  on the actuating retainer  1  can be a hook  121  directed leftward (see  FIGS. 1-11 ) or rightward (see  FIG. 12 ) when viewing in front of the drawings. The hook  121  is preferably a triangular or wedge shaped hook protruded from the actuating retainer  1 , and it includes a beveled guide surface  122  and a hooking surface  123  connected to a lower edge of the beveled guide surface  122 . As can be seen in  FIG. 13A , the beveled guide surface  122  allows the actuating retainer  1  to be conveniently pressed into the first object  5 , and the hooking surface  123  can firmly abut on an inner side of the first object  5  after the beveled guide surface  122  has been moved into the first object  5 . 
     In the first preferred embodiment shown in  FIGS. 1 to 9 , the fixing member  2  preferably includes at least one second push section  23 . As illustrated in the drawings, the second push section  23  can be lying U-shaped to include two jaws  231  formed on an outer end thereof and a holding cavity  232  defined between the two jaws  231 . Referring to  FIG. 13A , the two jaws  231  and the holding cavity  232  of the second push section  23  can be used to hold the first object  5  thereto. When it is desired to release the second object  6  from the first object  5 , simply turn the quick release connecting device as a lever to push the first object  5  out of the second push section  23 , and the second object  6  can be easily released from the first object  5 . 
     In the first preferred embodiment shown in  FIGS. 1 to 9 , the pivot portion  22  of the fixing member  2  is preferably a protruded block, a retaining block or a through hole integrally formed with or additionally assembled to the body portion  21 . As shown in  FIG. 13A , the quick release connecting device of the present invention can be movably connected to the second object  6  via the protruded block, the retaining block or the through hole. Preferably, the pivot portion  22  can be inserted in, snapped fitted onto, riveted to, expansion-fitted onto or screwed to the second object  6 , so that the quick release connecting device and the second object  6  are rotatably connected to each other. 
     In the first preferred embodiment shown in  FIGS. 1 to 9 , the receiving space  11  in the actuating retainer  1  includes a straight and rectangular-sectioned slide space  111 . The inner end of the body portion  21  of the fixing member  2  is extended into the slide space  111  and is slidably held therein via the pin connection means  3 , so that the actuating retainer  1  and the fixing member  2  are able to slide relative to each other within a limited range. The elastic element  4  is preferably a coil spring, as shown in  FIGS. 2 to 6 , but it can also be an elastic plate or an elastic bar. The elastic element  4  is disposed in the slide space  111  with an end pressed against an inner wall surface of the slide space  111  and another end pressed against the body portion  21 , such that the actuating retainer  1  and the fixing member  2  can slide relative to each other within a limited range and then return to their respective original position under the elastic force of the elastic element  4 . 
     In the second preferred embodiment shown in  FIGS. 10 to 12 , the receiving space  11  in the actuating retainer  1  includes an arcuate slide space  112 . The inner end of the body portion  21  of the fixing member  2  is extended into the arcuate slide space  112  and is rotatably held therein via the pin connection means  3 , so that the actuating retainer  1  and the fixing member  2  are able to rotate relative to each other within a limited angle. The elastic element  4  is preferably a coil spring, as shown in  FIG. 10 , but it can also be an elastic plate as shown in  FIG. 12  or an elastic bar (not shown). The elastic element  4  is disposed in the arcuate slide space  112  with an end pressed against an inner wall surface of the slide space  112  and another end pressed against the body portion  21 , such that the actuating retainer  1  and the fixing member  2  can rotate relative to each other within a limited angle and then return to their respective original position under the elastic force of the elastic element  4 . 
     The first object  5  can be a rack, a chassis, a cabinet for drawers, a window frame or other objects; and the second object  6  can be a circuit board, a drawer, a window or other objects.  FIG. 13A  shows the quick release connecting device according to the first preferred embodiment of the present invention is movably assembled to the second object  6  via the pivot portion  22  of the fixing member  2 . Meanwhile, the retaining section  12  of the actuating retainer  1  and the second push section  23  of the fixing member  2  are detachably engaged with two opposite sides of the first object  5 , so that the second object  6  is located in and sidewardly movably connected to the first object  5  via the quick release connecting device. When it is desired to separate the second object  6  from the first object  5 , as indicated by  FIG. 13B , simply push the first push section  14  of the actuating retainer  1  with one hand, so that the actuating retainer  1  slides toward the fixing member  2  by a limited range to separate the retaining section  12  from one side of the first object  5 . Then, as shown in  FIG. 13C , utilize the principle of leverage to push the quick release connecting device for the fixing member  2  to rotate about the pivot portion  22 , bringing the second push section  23  to push the other side of the first object  5  away from it. At this point, the second object  6  can be pulled to slide out of the first object  5 . Finally, as shown in  FIG. 13D , when the second object  6  is separated from the first object  5  and the first push section  14  is no longer subjected to a push, the elastic element  4  automatically pushes the actuating retainer  1  to slide relative to the fixing member  5  back to its original position. 
       FIG. 14A  shows the quick release connecting device according to the second preferred embodiment of the present invention is similarly movably assembled to the second object  6  via the pivot portion  22  of the fixing member  2 . Meanwhile, the retaining section  12  of the actuating retainer  1  and the second push section  23  of the fixing member  2  are detachably engaged with two opposite sides of the first object  5 , so that the second object  6  is located in and sidewardly movably connected to the first object  5  via the quick release connecting device. When it is desired to separate the second object  6  from the first object  5 , as indicated by  FIG. 14B , simply push the first push section  14  of the actuating retainer  1  with one hand, so that the actuating retainer  1  rotates relative to the fixing member  2  by a limited angle to separate the retaining section  12  from one side of the first object  5 . Then, as shown in  FIG. 14C , utilize the principle of leverage to push the quick release connecting device for the fixing member  2  to rotate about the pivot portion  22 , bringing the second push section  23  to push the other side of the first object  5  away from it. At this point, the second object  6  can be pulled to slide out of the first object  5 . Finally, as shown in  FIG. 14D , when the second object  6  is separated from the first object  5  and the first push section  14  is no longer subjected to a push, the elastic element  4  automatically pushes the actuating retainer  1  to rotate relative to the fixing member  5  back to its original position. 
     Please refer to  FIG. 15 , which is an exploded perspective view of a quick release connecting device  7  according to a third preferred embodiment of the present invention. The quick release connecting device  7  includes an actuating retainer  71 , a fixing member  72  movably assembled to the actuating retainer  71 , and pin connection means  3 . The actuating retainer  71  includes at least one first push section  711 , a body portion  712 , and a retaining section  713  for detachably engaging with a first object  5  (not shown in  FIG. 15 ). The fixing member  72  internally defines a receiving space  721  and includes a pivot portion  722  formed on an outer side of the receiving space  721 . The body portion  712  is movably received in the receiving space  721 , and the pivot portion  722  is used to movably connect to a second object (not shown in  FIG. 15 ). The pin connection means  3  enables connection of the receiving space  721  of the fixing member  72  to the body portion  712  of the actuating retainer  71 , such that the actuating retainer  71  and the fixing member  72  are movable relative to each other within a limited range. The quick release connecting device  7  according to the third preferred embodiment of the present invention can further include an elastic element  4 , which is disposed in the receiving space  721  with an end pressed against an inner wall surface of the receiving space  721  and another opposite end against the body portion  712 . In this manner, the elastic element  4  enables and controls the limited movement of the actuating retainer  71  and the fixing member  72  relative to each other, and can elastically push the actuating retainer  71  and the fixing member  72  back to their original positions. 
     In addition, the retaining section  713  can be in the form of a hook, a recessed section, a protruded section, a stepped section, a flat surface, a cambered surface, or a curved surface. 
     Please refer to  FIGS. 16A-16C , which show a quick release connecting device  7  without the second push section according to a fourth preferred embodiment of the present invention. In the illustrated fourth preferred embodiment, the pivot portion  722  (please also refer to the pivot portion  722  shown in  FIG. 15 ) has a pivot member  723  movably mounted thereto for coupling with the second object  6 . The pivot member  723  includes a shaft  724  movably assembled thereto. The pivot member  723  (or the fixing member  72 ) and the shaft  724  are assembled together via a second pin connection means  725 . An elastic element  73  is fitted on around the pivot portion  722  or the pivot member  723  with an end pressed against (or inserted into) the pivot member  723  (or a structure corresponding to the pivot member  723 , such as a hole or a slot, not shown in the drawing) and another end pressed against the fixing member  72  of the quick release connecting device  7 . The pivot member  723  includes a coupling section  726  for screwing onto, snap-fitted on, expansion-fitted on, welded to or riveted to the second object  6 . Further, the fixing member  72  includes a limiting section  727  and the pivot member  723  includes a corresponding limiting section  728 . When the fixing member  72  is moved or rotated, the limiting section  727  and the corresponding limiting section  728  can limit or stop each other at a specific location. The actuating retainer  71  or the body portion  712  thereof includes a shoulder section  714  for limiting a distance by which the actuating retainer  71  or the body portion  712  is allowed to move into the receiving space  721 . Alternatively, the shaft  724  can be integrally formed with the pivot member  723  or the pivot portion  722 , or can be fixedly assembled to the pivot member  723  or the pivot portion  722  (not shown). 
     The limiting section  727  or the corresponding limiting section  728  can be a beveled member, a flat member, a stepped member, a recessed member, or a protrusion. When the quick release connecting device  7  is turned by a target angle, the limiting section  727  and the corresponding limiting section  728  stop or limit each other and the quick release connecting device  7  can not be moved or rotated any further. The target angle can be, for example, ranged from 15 to 345 degrees. 
     Further, being driven by the elastic element  73 , which can be a spring providing a twisting force, the quick release connecting device  7  can automatically turn within an angle limited by between the limiting section  727  and the corresponding limiting section  728  to achieve an elastic restoring motion, or an elastic releasing motion, or an elastic fastening motion. 
     The quick release connecting device  7  can also be driven by the elastic element  73 , which provides a twisting force, to float within a range limited by between the limiting section  727  and the corresponding limiting section  728 , including horizontally linear floating, vertically linear floating, or pivotal floating. Herein, a horizontally linear floating amount and a vertically linear floating amount of the quick release connecting device  7  refer to a distance by which the fixing member  72  is horizontally and vertically linearly movable relative to the pivot member  723 , respectively; and a pivotal floating amount of the quick release connecting device  7  refers to an angle or a distance by which the fixing member  72  or the actuating retainer  71  is pivotally turnable between two different angularly spaced positions (not shown in  FIG. 16 ). 
     In addition, the first push section  711  can be in the form of a post, a hole, a recessed member, a protrusion, a retaining member, a stepped member, an anti-slide member, a flat member, a cambered member, or a hooking member. 
     Please refer to  FIG. 17 , which shows a quick release connecting device  7  without the second push section according to a fifth preferred embodiment of the present invention. In the illustrated fifth preferred embodiment, the actuating retainer  71  of the quick release connecting device  7  internally defines a receiving space  710 , and the fixing member  72  includes a body portion  720  movably received in the receiving space  710 ; and the pin connection means  3  enables connection of the receiving space  710  of the actuating retainer  71  to the body portion  720  of the fixing member  72 , such that the actuating retainer  71  and the fixing member  72  are movable relative to each other within a limited range. 
     Please refer to  FIGS. 18 and 19 , which show a quick release connecting device  7  according to a sixth preferred embodiment of the present invention. In the illustrated sixth preferred embodiment, the first object  5  and the second object  6  can be integrally formed, assembled together, or two independent objects; the second object  6  can be assembled to a fourth object  9  to form a modular object; or the quick release connecting device  7  and the second object  6  can be assembled together to form a module with an elastic element  73   a  pressing an end against the fixing member  72  of the quick release connecting device  7  and another end against the second object  6 , such that the fixing member  72  under a spring force of the elastic element  73   a  is either automatically sprung back to its original position or limited to a fixed position. The fixing member  72  includes a second push section  729  having a first push part  7291  and a second push part  7292 . The first push part  7291  or the second push part  7292  can be pressed against a third object  8 . The pressing of the second push section  729  against the third object  8  causes a lever displacement, a rotational displacement or a limiting displacement of the quick release connecting device  7 , so as to release, fasten, forward move or backward move the quick release connecting device  7 . Alternatively, the first push part  7291  or the second push part  7292  can also be displaced by pressing them against the third object  8 . The second object  6  includes a limiting section  61  for limiting a distance or an angle by which the second push section  729  can be moved or rotated, respectively. Or, in practical use of the quick release connecting device  7  according to the sixth preferred embodiment, the first push part  7291  and the second push part  7292  can be first subjected to a rotational or a non-rotational displacement to be located at a proper position in front of or behind or at a middle of a position on the third object  8  that is to be pressed against or interfered with, so that the first push part  7291  or the second push part  7292  of the second push section  729  having been rotationally or non-rotationally displaced can press against or interfere with the third object  8 , enabling the quick release connecting device  7  to be released, fastened, forward moved or backward moved due to a lever displacement, a rotational displacement or a limiting displacement thereof. 
     In addition, the second push section  729  can be in the form of a protruded section, a recessed section, a through bore, a stepped section, a flat section, a cambered section or a curved section. 
     Further, when operating the first push section  711  of the actuating retainer  71  to compress the first push section  711  toward the fixing member  72 , an overall travel of the quick release connecting device  7  is shortened, enabling the retaining section  713  to separate from the first object  5  while pulls the second object  6 . 
     Please refer to  FIGS. 20 and 21 , which show a quick release connecting device  7  according to a seventh preferred embodiment of the present invention. In the illustrated seventh preferred embodiment, the actuating retainer  71  of the quick release connecting device  7  defines a receiving space  710 , and the fixing member  72  includes a body portion  720  movably received in the receiving space  710 ; and the pin connection means  3  enables connection of the receiving space  710  of the actuating retainer  71  to the body portion  720  of the fixing member  72 , such that the actuating retainer  71  and the fixing member  72  are movable relative to each other within a limited range. Further, the elastic element (not shown) is disposed in the receiving space  710  with an end of the elastic element pressed against an inner wall surface of the receiving space  710  and another opposite end against the body portion  720 . In this manner, the elastic element enables and controls the limited movement of the actuating retainer  71  and the fixing member  72  relative to each other, and can elastically push the actuating retainer  71  and the fixing member  72  back to their original positions. That is, the seventh preferred embodiment can achieve the same effect as the fifth preferred embodiment. 
     Please refer to  FIG. 22 , which shows a quick release connecting device  7  without the second push section according to an eighth preferred embodiment of the present invention, and to  FIG. 23 , which shows different configurations available for a mounting section  62  provided on a second object  6 , which is to be connected to the quick release connecting device  7  according to the eighth preferred embodiment of the present invention. In the illustrated eighth preferred embodiment, the second object  6  can be a printed circuit board (PCB), a metal chassis, or a plastic chassis, and is provided with a mounting section  62  and a corresponding directional section  63 . According to the eighth preferred embodiment, the mounting section  62  can be differently configured as a post or a hole. In the illustrated eighth preferred embodiment, the pivot member  723  of the quick release connecting device  7  is provided with a coupling section  7231  for coupling with the mounting section of the second object  6  and a directional section  7232  for engaging with the corresponding directional section  63  of the second object  6  to limit the pivot member  723  to specific directions or to restrict the pivot member  723  from rotating or moving. 
     According to the eighth preferred embodiment, the coupling section  7231  can be in the form of a threaded member, a male fastening element, a female fastening element, a protrusion, a recessed member, a spring plate, a groove, a plate member, a post, a hooking member, a nut, a retaining member, or a hole; the directional section  7232  or the corresponding directional section  63  can be in the form of a hole, a groove, a threaded member, a male fastening element, a female fastening element, a protrusion, a recessed member, a spring plate, a plate member, a nut, a post, a hooking member, or a retaining member; and the mounting section  62  can be in the form of a threaded member, a male fastening element, a female fastening element, a spring plate, a groove, a protrusion, a recessed member, a plate member, a post, a hooking member, a nut, a retaining member, or a hole. In the illustrated eighth preferred embodiment, the mounting section  62  is in the form of a cylindrical hole. 
     Alternatively, the mounting section  62  can be an independent retaining member or coupling member for engaging with the second object  6  and the quick release connecting device  7 . In this case, the independent mounting section  62  can be in the form of a nut as shown in  FIG. 23( a ) , an elastic retaining member as shown in  FIG. 23( b ) , a post as shown in  FIG. 23( c ) , a screw as shown in  FIG. 23( d ) , or a male fastening element as shown in  FIG. 23( e ) . 
     Please refer to  FIGS. 24 to 27 , in which a quick release connecting device  7  without the second push section and having a floating fixing member  72  according to a ninth preferred embodiment of the present invention is shown. According to the ninth preferred embodiment, the pivot member  723  of the quick release connecting device  7  is connected to the second object  6 , such that a floating amount is allowable between the quick release connecting device  7  and the second object  6 , between the pivot portion  722  and the pivot member  723 , between the fixing member  72  and the second object  6 , between the fixing member  72  and the pivot member  723 , or between different angular positions of the fixing member  72 . The floating amount can be a vertically pivotal floating amount “a” as shown in  FIG. 24 ; a horizontally pivotal floating amount “b” as shown in  FIG. 25 ; a vertically linear floating amount “c” as shown in  FIG. 26 ; or a horizontally linear floating amount “d” as shown in  FIG. 27 . With the allowable floating amount “a”, “b”, “c” or “d”, the quick release connecting device  7  can be pivotally moved relative to the second object  6  in a vertical direction, be pivotally moved relative to the second object  6  in a horizontal direction, be linearly moved upward and downward relative to the second object  6  in a vertical direction, or be linearly moved forward and backward relative to the second object  6  in a horizontal direction, respectively. Preferably, the floating amount “a”, “b”, “c” or “d” is a distance ranged from 0.01 mm to 500 mm, and the floating amount “a” or “b” can be alternately an angle ranged from 0.1 to 345 degrees. 
     Please refer to  FIG. 28 , which shows a quick release connecting device  7  without the second push section according to a tenth preferred embodiment of the present invention. In the tenth preferred embodiment, the fixing member  72  of the quick release connecting device  7  includes a limiting section  727 , and the second object  6  is provided with a corresponding limiting section  65 . When the fixing member  72  is moved or turned, the limiting section  727  and the corresponding limiting section  65  can limit or stop each other at a specific location. 
     Please refer to  FIG. 29 , which shows a quick release connecting device  7  without the second push section according to an eleventh preferred embodiment of the present invention. In the eleventh preferred embodiment, the pivot member  723  is movably mounted to the pivot portion  722  of the fixing member  72 , and the pivot member  723  has a weldable surface  7233 , which can be heated and welded to the second object  6 . The weldable surface  7233  can be formed of tin, nickel, copper, chrome, iron or zinc; and the second object  6  can be a printed circuit board (PCB). Further, in this case, the second object  6  also has a weldable surface (not shown). 
     Please refer to  FIG. 30 , which shows a quick release connecting device without the second push section according to a twelfth preferred embodiment of the present invention. In the twelfth preferred embodiment, the pivot member  723  is movably mounted to the pivot portion  722  of the fixing member  72 , and the pivot member  723  has a material retaining space formed thereon. When the pivot member  723  is press-fitted onto the second object  6  under an external force applied thereto, some material of the second object  6  is forced or flows into the material retaining space  7234 . In this case, the pivot member  723  has a material hardness higher than that of the second object  6 , and the external force can be applied to the pivot member  723  by a mold  90 . 
     Please refer to  FIG. 31 , which shows a quick release connecting device without the second push section according to a thirteenth preferred embodiment of the present invention. In the thirteenth preferred embodiment, the pivot member  723  is movably mounted to the pivot portion  722  of the fixing member  72 , and the pivot member  723  has a portion that is deformable under an external force applied thereto by a mold  90 , so that the deformed portion of the pivot member  723  is abutted on or interfered with the second object  6 . 
     Please refer to  FIG. 32 , which shows a quick release connecting device without the second push section according to a fourteenth preferred embodiment of the present invention. In the fourteenth preferred embodiment, the pivot member  723  is movably mounted to the pivot portion  722  of the fixing member  72 , and an elastic member  74 , a friction-increasing member or a friction-decreasing member is disposed between the fixing member  72  and the pivot portion  722 , between the fixing member  72  and the pivot member  723 , between the pivot portion  722  and the second object  6 , between the pivot portion  722  and the pivot member  723 , between pivot member  723  and the second object  6 , or between the fixing member  72  and the second object  6 . The elastic member  74 , the friction-increasing member or the friction-decreasing member can be in the form of a flat spring, a coil spring, an elastic bar, a torsion spring, a pillar, a plate member, a smooth flat member, or a smooth-surface member. The elastic member  74  provides a torsional force or a frictional force against the quick release connecting device  7  when the same is being moved, so as to limit the moving speed or the moving force of the quick release connecting device  7 , or to limit or increase the vertically pivotal floating amount, the horizontally pivotal floating amount, the vertically linear floating amount, or the horizontally linear floating amount of the quick release connecting device  7 . 
     The present invention has been described with some preferred embodiments thereof and it is understood that the preferred embodiments are only illustrative and not intended to limit the present invention in any way and many changes and modifications in the described embodiments can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.