Abstract:
A quickly-operated adaptor is provided. A blocking member is movable in the main body. When a joint of a gas-communicating member is received in an outlet chamber to drive the blocking member, a positioning sleeve positions the joint. The gas-communicating mechanism is movable between a third position and a fourth position. When the gas-communicating mechanism is located in the third position, the outlet chamber is communicated with a gas-releasing chamber via the gas-communicating mechanism. Whereby, spurting of the joint caused by residual of the gas can be prevented, and it is effective to unblock or block the gas flow in the gas-communicating mechanism simply via adjustment of a slidable sleeve.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a quickly-operated adaptor, more particularly, to a quickly-operated adaptor having a slidable sleeve. 
         [0003]    2. Description of the Prior Art 
         [0004]    A conventional quickly-operated adaptor is shown in  FIG. 1 . The conventional quickly-operated adaptor includes a main body  7 , a blocking member  8  and a positioning sleeve  10 . 
         [0005]    The main body  7  includes a tube  71  which includes an inlet end and an outlet end corresponding thereto. An outlet chamber  711  is formed in the tube  71  and near the outlet end, and an inlet chamber  712  is formed in the tube  71  and near the inlet end. The outlet chamber  711  is adapted for receiving a joint A of a gas-communicating member. A positioning hole  713  is formed in the tube  71  and near the outlet end. 
         [0006]    The blocking member  8  is disposed in the tube  71  and movable between a first position and a second position. When the blocking member  8  is located in the first position, the blocking member  8  blocks the positioning hole  713 . When the blocking member  8  is located in the second position, the blocking member  8  unblocks the positioning hole  713 . 
         [0007]    A passageway  9  is communicated with the outlet chamber  711 . The passageway  9  is radially formed at one end of the blocking member  8  near the inlet chamber  712 . When the blocking member  8  is located in the first position, the outlet chamber  711  is uncommunicated with the inlet chamber  712 . When the blocking member  8  is located in the second position, the outlet chamber  711  is communicated with the inlet chamber  712  via the passageway  9 . A hollow blocking plate  714  is disposed in the tube  71  and a washer  715  is disposed around the blocking member  8 , so that the outlet chamber  711  and the inlet chamber  712  are isolated and uncommunicated with each other. 
         [0008]    The positioning sleeve  10  is disposed around the main body  7  and near the outlet end, and the positioning sleeve  10  is slidable between a fifth position and a sixth position. The positioning sleeve  10  further includes a positioning mechanism and a second elastic member. The second elastic member is abutted between the positioning sleeve  10  and the main body  7  so as to assist in biasing of the positioning sleeve  10  toward the outlet end of the tube  71 . When the positioning sleeve  10  moves toward the outlet end of the tube  71  to the sixth position, the positioning mechanism positions the joint A of the gas-communicating member received in the tube  71  via the positioning hole  713 . 
         [0009]    This kind of the conventional quickly-operated adaptor has deficiencies in use. An operator must control a switch or vale of a gas-supplying device to block the gas flow in the quickly-operated adaptor, thus resulting in inconvenience of necessary movement of the operator to the gas-supplying device. Additionally, when proceeds with a work requiring great precision, since the gas flow cannot be blocked promptly, the required precision cannot be achieved and it might cause the spurting of the joint of the gas-communicating member to injure the operator when the joint is disengaged. 
         [0010]    The present invention is, therefore, arisen to obviate or at least mitigate the above mentioned disadvantages. 
       SUMMARY OF THE INVENTION 
       [0011]    The object of the present invention is to provide a quickly-operated adaptor, in which it is effective to unblock or block the gas flow in a gas-communicating mechanism via adjustment of a slidable sleeve, so as to improve issues of the requirement of a re-disengagement with a device or the controlling of unblocking or blocking the gas flow in a gas-supplying device. 
         [0012]    Another object of the present invention is to provide a quickly-operated adaptor which includes a gas-releasing structure to provide a buffering effect so as to prevent the joint of the gas-communicating member from accidently spurting out due to the pressure of the residual of the gas. 
         [0013]    To achieve the above and other objects, a quickly-operated adaptor of the present invention includes a main body, a blocking member, a first elastic member, a gas-communicating mechanism, a slidable sleeve and a positioning sleeve. 
         [0014]    The main body includes a tube which includes an inlet end and an outlet end corresponding thereto. An inlet chamber is formed in the tube and near the inlet end, and an outlet chamber is formed in the tube and near the outlet end. The outlet chamber is adapted for receiving a joint of a gas-communicating member, the main body includes a gas-releasing chamber therein, and the tube is formed with a positioning hole near the outlet end. 
         [0015]    The blocking member is disposed in the tube and being movable between a first position and a second position. 
         [0016]    The first elastic member is abutted between the main body and the blocking member for assisting in biasing of the blocking member toward the first position. 
         [0017]    The gas-communicating mechanism is movable between a third position and a fourth position and includes a passageway communicated with the outlet chamber. When the gas-communicating mechanism is located in the third position, the outlet chamber is communicated with the gas-releasing chamber via the passageway and uncommunicated with the inlet chamber. When the gas-communicating mechanism is located in the fourth position, the outlet chamber communicates with the inlet chamber via the passageway. 
         [0018]    The slidable sleeve is disposed around the main body and near the inlet end, and the gas-releasing chamber is formed between the slidable sleeve and the tube. An inlet passageway is formed between the slidable sleeve and the tube. The inlet passageway and the inlet chamber are communicated with each other, and the passageway is formed in the tube. The gas-communicating mechanism is movable between the third position and the fourth position via sliding the slidable sleeve. When the gas-communicating mechanism is located in the third position, the passageway is communicated with the gas-releasing chamber and uncommunicated with the inlet passageway. When the gas-communicating mechanism is located in the fourth position, the passageway is communicated with the inlet passageway and uncommunicated with the gas-releasing chamber. 
         [0019]    The positioning sleeve is disposed around the main body and near the outlet end, and is slidable between a fifth position and a sixth position. 
         [0020]    When the blocking member is located in the first position, the positioning sleeve is unmovable to the sixth position, and when the blocking member is moved to the second position, the positioning sleeve is moved to the sixth position. 
         [0021]    The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0022]      FIG. 1  is a cross-sectional view of a conventional adaptor; 
           [0023]      FIG. 2  is a cross-sectional view of a first embodiment of the present invention; 
           [0024]      FIG. 3  is a view showing a quickly-operated adaptor in use according to the first embodiment of the present invention; and 
           [0025]      FIG. 4  is another view showing the quickly-operated adaptor in use according to the first embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0026]    As shown in  FIGS. 2 to 4 , a quickly-operated adaptor of the present includes a main body  1 , a blocking member  2 , a first elastic member  3 , a gas-communicating mechanism and a positioning sleeve  5 . The main body  1  includes a tube  11  having an inlet end and an outlet end corresponding thereto. An outlet chamber  111  is formed in the tube  11  and near the outlet end, and an inlet chamber  112  is formed in the tube  11  and near the inlet end. The outlet chamber  111  is adapted for receiving a joint  6  of a gas-communicating member. The main body  1  includes a gas-releasing chamber  113  therein, and the tube  11  is formed with a positioning hole  114  near the outlet end. In a preferable embodiment, the gas-releasing chamber  113  is formed by the tube  11  and the blocking member  2 . 
         [0027]    The blocking member  2  is dispose in the tube  11  and movable between a first position and a second position. The first elastic member  3  is abutted between the main body  1  and the blocking member  2  so as to assist in biasing of the blocking member  2  toward the first position. When the blocking member  2  is located in the first position, the blocking member  2  blocks the positioning hole  114  (via positioning ball  51 ). When the blocking member  2  is located in the second position, the blocking member  2  unblocks the positioning hole  114 . 
         [0028]    The gas-communicating mechanism is movable between a third position and a fourth position and includes a passageway  4  communicated with the outlet chamber  111 . When the gas-communicating mechanism is located in the third position, the outlet chamber  111  is communicated with the gas-releasing chamber  113  and uncommunicated with the inlet chamber  112 . When the gas-communicating mechanism is located in the fourth position, the outlet chamber  111  is communicated with the inlet chamber  112 . In a preferable embodiment, the passageway  4  is radially formed at one end of the blocking member  2  and near the inlet chamber  112 . When the blocking member  2  is located in the first position, the outlet chamber  111  is communicated with the gas-releasing chamber  113  via the passageway  4  and uncommunicated with the inlet chamber  112 . When the blocking member  2  is located in the second position, the outlet chamber  111  is communicated with the inlet chamber  112  via the passageway  4  and uncommunicated with the gas-releasing chamber  113 . A hollow blocking plate  115  is fixedly disposed in the tube  11  and a washer  116  is disposed around the blocking member  2 , so as to separate and uncommunicate the gas-releasing chamber  113  and the inlet chamber  112 . 
         [0029]    The positioning sleeve  5  is disposed around the main body  1  and near the outlet end, and the positioning sleeve  5  is movable between a fifth position and a sixth position. The positioning sleeve  5  further includes a positioning mechanism and a second elastic member  52 . The second elastic member  52  is abutted between the positioning sleeve  5  and the main body  1  and assists in biasing of the positioning sleeve  5  toward the outlet end of the tube  11 . When the positioning sleeve  5  moves toward the outlet end of the tube  11  and is located in the sixth position, the positioning mechanism positions the joint  6  of the gas-communicating member received in the tube  11  via the positioning hole  114 . 
         [0030]    The positioning mechanism includes a positioning ball  51  and a positioning groove  53 . When the blocking member  2  is located in the first position, the blocking member  2  blocks the positioning hole  114  and the positioning ball  51  is located in the positioning hole  114  and the positioning groove  53  so that the positioning ball  51  is unpermitted to move into the tube  11 . As such, the positioning sleeve  5  is blocked by the positioning ball  51  so as to locate in the fifth position. When the blocking member  2  is received in the joint  6  of the gas-communicating member of the outlet chamber  111  to drive the blocking member  2  to the second position, the blocking member  2  unblocks the positioning hole  114 , the positioning ball  51  goes in the tube  11  to be blocked in the positioning hole  114  and a positioning portion  61  of the joint of the gas-communicating member. The positioning sleeve  5  is not blocked by the positioning ball  51  and pushed by the second elastic member  52 , so that the positioning sleeve  5  moves toward the outlet end to the sixth position, while the positioning ball  51  is wedged at the positioning portion  61  so that the joint  6  of the gas-communicating member is unpermitted to be disconnected from the outlet chamber  111 . Additionally, one end of the positioning sleeve  5  near the outlet end is formed with an abutting portion  54 , and an outer circumferential surface of the tube  11  is formed with an engaging portion  117  near the outlet end. When the positioning sleeve  5  is located in the sixth position, the abutting portion  54  abuts against the engaging portion  117  so as to unpermit movement of the positioning sleeve  5  toward the outlet end. 
         [0031]    In a preferable embodiment, the main body  1  further includes a slidable sleeve  12  disposed around the main body  1  and near the inlet end, and the gas-releasing chamber  113  is formed between the slidable sleeve  12  and the tube  11 . An inlet passageway  121  is formed between the slidable sleeve  12  and the tube  11 , and the inlet passageway  121  and the inlet chamber  112  are communicated with each other. The passageway  4  is formed in the tube  11 , and the gas-communicating mechanism is movable between the third position and the fourth position via sliding the slidable sleeve  12 . When the gas-communicating mechanism is located in the third position, the passageway  4  is communicated with the gas-releasing chamber  113  and uncommunicated with the inlet passageway  121 . When the gas-communicating mechanism is located in the fourth position, the passageway  4  is communicated with the inlet passageway  121  and uncommunicated with the gas-releasing chamber  113 . In addition, the blocking plate  115  disposed between the passageway  4  and the inlet chamber  112  can separate the inlet chamber  112  and the outlet chamber  111 . Also, the washer  116  which is disposed in the slidable sleeve  12  and between the gas-releasing chamber  113  and the inlet passageway  121  can ensure the gas-releasing chamber  113  and the inlet passageway  121  isolated. 
         [0032]    Furthermore, an outer circumferential surface of the tube  11  is formed with a limiting groove  118 , the positioning sleeve  5  is formed with a receiving hole  55 , and an inner circumferential surface of the slidable sleeve  12  is formed with a receiving recess  122 . When the positioning sleeve  5  is located in the fifth position and the gas-communicating mechanism is located in the third position, as shown in  FIG. 2 , a limiting ball  123  is blocked by the tube  11  so as to locate in the receiving hole  55  and the receiving recess  122 . Therefore, when the positioning sleeve  5  is located in the fifth position, the slidable sleeve  12  is unpermitted to move toward the outlet end, so that the slidable sleeve  12  is positioned and the outlet chamber  111  and the inlet chamber  112  are uncommunicated with each other. When the positioning sleeve  5  is located in the sixth position and the gas-communicating mechanism is located in the third position, as shown in  FIG. 3 , the limiting ball  123  is located in the receiving recess  122 , the receiving hole  55  and the limiting groove  118 . When the positioning sleeve  5  is located in the sixth position and the gas-communicating mechanism is located in the fourth position, as shown in  FIG. 4 , the limiting ball  123  is blocked by the slidable sleeve  12  so as to locate in the receiving hole  55  and the limiting groove  118 . Therefore, when the slidable sleeve  12  slides toward the outlet end and the gas-communicating mechanism is located in the fourth position, the positioning sleeve  5  is positioned in the sixth position. Through the above structure, when the joint  6  of the gas-communicating member has not be properly positioned in the outlet chamber, the slidable sleeve  12  cannot be slided, thus preventing accident disengagement of the joint  6  of the gas-communicating member when the gas passes therethrough. Besides, when the joint  6  of the gas-communicating member is already properly positioned and the gas passes therethrough, the positioning sleeve  5  is unpermitted to slide to the fifth position so as to allow the removal of the joint  6  of the gas-communicating member if the slidable sleeve  12  is not slid in advance to isolate and uncommunicate the outlet chamber  111  and the inlet chamber. Whereby, only when the gas flow is blocked in advance, the joint  6  of the gas-communicating member is permitted to be removed from the outlet chamber  111  so as to avoid danger. 
         [0033]    Moreover, in a preferable embodiment, the abutting portion  54  is formed on one side of the inner circumferential surface of the positioning groove  53  and remote from the engaging portion  117 , and the abutting portion  54  is a inclined surface facing the tube  11 , so that when the positioning sleeve  5  moves from the fifth position toward the sixth position, the abutting portion (inclined surface)  54  can smoothly push the positioning ball  51  to move toward the interior of the tube  11  to position the joint  6  of the gas-communicating member. 
         [0034]    In sum, the quickly-operated adaptor of the invention is provided with the following advantages: with a gas-releasing structure for releasing gas pressure when the joint of the gas-communicating member is being removed, so as to avoid danger of caused by the spurting joint due to the high gas pressure; and with safety installations, the gas flow cannot flow before the joint of the gas-communicating member is properly connected, and the joint of the gas-communicating member cannot disengage unlimitedly from the tube when the inlet chamber and the outlet chamber are communicated with each other. 
         [0035]    Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.