Patent Document

BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates generally to a vehicle service tool, and more particularly to a complex pneumatic tool. 
         [0003]    2. Description of the Related Art 
         [0004]    In vehicle service operation, specific worked objects necessitate specific tools. Therefore, there are various conventional service tools applicable to different worked objects. For example, Taiwanese Patent Nos. 090213560 and 090214968 disclose manually operable tools for servicing the wheel cylinder piston of a brake caliper. On the other hand, Taiwanese Patent No. 090112484 discloses a manual tool applicable to the tube binder for connecting the pipelines of a vehicle. The specific tools enable a serviceman to service the vehicle well. Also, the working time is greatly shortened and the service quality is enhanced to ensure safety in driving. 
         [0005]    However, each of the conventional tools can only provide one single function and must be operated manually. As a result, it is inconvenient to perform the service operation. 
       SUMMARY OF THE INVENTION 
       [0006]    It is therefore a primary object of the present invention to provide a complex pneumatic tool, which can be conveniently used to facilitate service operation of a vehicle. 
         [0007]    To achieve the above and other objects, the complex pneumatic tool of the present invention includes: a body section having a main body formed with an internal slide room; a slide member with a predetermined length, the slide member being slidably disposed in the slide room, two ends of the slide member respectively extending out of the body section from the slide room, the slide member being axially reciprocally movable between a first position and a second position under the restriction of the slide room; a first action section disposed at one end of the slide member; and a second action section disposed at the other end of the slide member. 
         [0008]    In the above complex pneumatic tool, the slide member includes a piston slidably disposed in the slide room and an elongated slide body. A middle section of the slide body is fixedly connected with the piston. Two ends of the slide body extend out of the body section. 
         [0009]    In the above complex pneumatic tool, the body section has an inlet passage formed in the main body, The inlet passage communicates with one end of the elongated slide room on one side of the piston. 
         [0010]    In the above complex pneumatic tool, the first action section has a connection body outward extending from the main body. A free end of the connection body is spaced from one end of the slide member. A tube binder stretching member has a connection end. The connection end is connected with the free end of the connection body. One end of a pull cord is connected with a stretching end of the tube binder stretching member. The other end of the pull cord is connected with one end of the slide member. 
         [0011]    In the above complex pneumatic tool, the second action section has a fixed side body separably connected with the main body in adjacency to the other end of the slide member and a movable side body separably connected with the other end of the slide member and spaced from the fixed side body. The distance between the movable side body and the fixed side body is changeable with the movement of the slide member. 
         [0012]    In the above complex pneumatic tool, the slide member has an elongated hollow slide body. The first action section extends into the slide body from one end of the slide member. 
         [0013]    In the above complex pneumatic tool, the first action section has an elongated rod with a predetermined length. The elongated rod extends into the slide body. 
         [0014]    In the above complex pneumatic tool, the elongated rod is slidably connected in the slide body. 
         [0015]    In the above complex pneumatic tool, the elongated rod is screwed in the slide body. 
         [0016]    In the above complex pneumatic tool, the second action section further includes a duct. One end of the duct is fixedly connected to the main body and slidably connected with the slide member. The other end of the duct is engaged with the fixed side body for connecting the fixed side body to the main body. 
         [0017]    The present invention can be best understood through the following description and accompanying drawings, wherein: 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]      FIG. 1  is a perspective assembled view of a first embodiment of the present invention; 
           [0019]      FIG. 2  is a sectional view taken along line  2 - 2  of  FIG. 1 ; 
           [0020]      FIG. 3  is a perspective exploded view of a second embodiment of the present invention; 
           [0021]      FIG. 4  is a perspective assembled view of the second embodiment of the present invention; 
           [0022]      FIG. 5  is a sectional view taken along line  5 - 5  of  FIG. 4 ; 
           [0023]      FIG. 6  is a side view of the second embodiment of the present invention; 
           [0024]      FIG. 7  is a perspective exploded view of a third embodiment of the present invention; 
           [0025]      FIG. 8  is a perspective assembled view of the third embodiment of the present invention; 
           [0026]      FIG. 9  is a sectional view taken along line  9 - 9  of  FIG. 8 , showing that the second action section is not moved; and 
           [0027]      FIG. 10  is a sectional view taken along line  9 - 9  of  FIG. 8 , showing that the second action section is pushed and moved. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0028]    Please refer to  FIGS. 1 and 2 . According to a first embodiment, the usage of the complex pneumatic tool  10  of the present invention is identical to that of Patent No. 090112484. The complex pneumatic tool  10  includes a body section  20 , a slide member  30 , a first action section  40  and a second action section  50 . 
         [0029]    The body section  20  has a cylindrical main body  21  and a handle  22  protruding from one side of the main body  21 . A substantially cylindrical slide room  23  inward extends from one end of the main body  21  along an axis of the main body  21 . A slide passage  24  inward extends from the other end of the main body  21  to coaxially communicate with the slide room  23 . An inlet passage  25  communicates the exterior of the handle  22  with the slide room  23 . A valve member  26  is disposed on the handle  22  for controlling the unblocking/blocking of the inlet passage  25 . 
         [0030]    The slide member  30  has a piston  31  slidably disposed in the slide room  23 . The piston  31  is axially reciprocally movable within the slide room  23  between a first position and a second position. The inlet passage  25  communicates with the slide room  23  in a position between the piston  31  and the slide passage  24 . Accordingly, the air going inward from the exterior through the inlet passage  25  serves to push the piston  31  from the first position to the second position. A middle section of a cylindrical slide body  32  with a certain length is shafted and fixedly connected to the piston  31 , whereby the slide body  32  is axially reciprocally movable along with the piston  31 . Two ends of the slide body  32  respectively outward protrude from the slide room  23  and the slide passage  24 . 
         [0031]    The first action section  40  is disposed at one end of the slide body  32 . The first action section  40  has a substantially U-shaped plate-like connection body  41  outward extending from the main body  21 . A free end of the connection body  41  is spaced from the end  321  of the slide body  32 , which end extends out of the slide passage  24 . A tube binder stretching member  42  has a connection end  421  connected with the free end of the connection body  41 . One end of a pull cord  43  is connected with a stretching end  422  of the tube binder stretching member  42 . The other end of the pull cord  43  is fixedly connected to the end  321  of the slide body  32  via a connection bolt  431 . 
         [0032]    The second action section  50  has a duct  51  coaxially slidably connected to the other end of the slide body  32 . One end of the duct  51  is fixedly connected with the main body  21  for guiding the slide body  32  to axially move between the first and second positions. Also, the second action section  50  serves as a medium for connecting the main body  21  with other components. 
         [0033]    According to the above assembly of the complex pneumatic tool  10 , the inlet passage  25  is connectable to a high-pressure air source via an external pipeline. The external air can go into the slide room  23  under control to push the piston  31  from the first position to the second position. When the piston  31  axially moves, via the pull cord  43 , the stretching end  422  is driven to synchronously move. In this case, a tube binder  60  is stretched open for use. The technique of stretching open the tube binder  60  with the tube binder stretching member  42  pertains to prior art and thus will not be further described hereinafter. 
         [0034]    Please now refer to  FIGS. 3 to 6 . According to a second embodiment, the complex pneumatic tool  10 ′ of the present invention serves as a brake caliper service tool as Patent Nos. 090213560 and 090214968. In structure, the first action section  40 ′ and the second action section  50 ′ are different from those of the first embodiment. Also, the slide body  32 ′ is a hollow tubular body with two open ends. 
         [0035]    To speak more specifically, in addition to the duct  51 ′, the second action section  50 ′ further includes a plate-like fixed side body  52 ′ fitted on and engaged with the other end of the duct  51 ′. A connection nut  53 ′ is screwed on the other end of the duct  51 ′ for locating the fixed side body  52 ′ on the duct  51 ′, whereby the fixed side body  52 ′ is indirectly connected to the main body  21 ′. A plate-like movable side body  54 ′ has a protruding connection post  541 ′ inserted in the opening of the other end of the slide body  32 ′ 
         [0036]    The first action section  40 ′ has an elongated rod  41 ′ with a certain length. The elongated rod  41 ′ coaxially extends into the slide body  32 ′ from one end thereof. One end of the elongated rod  41 ′ is engaged with the connection post  541 ′ of the movable side body  54 ′ . The other end of the elongated rod  41 ′ is positioned outside the opening of one end of the slide body  32 ′. In this case, a user can apply a force to the other end of the elongated rod  41 ′ to rotate the movable side body  54 ′ so as to meet the requirement of operation. 
         [0037]    According to the above arrangement, in use of the complex pneumatic tool  10 ′, the fixed side body  52 ′ is attached to and leant against one side of the brake caliper, while the movable side body  54 ′ is leant against the wheel cylinder piston of the brake caliper. Also, the position of the movable side body  54 ′ is adjustable by means of the first action section  40 ′ so as to snugly lean the movable side body  54 ′ against the wheel cylinder piston of the brake caliper. 
         [0038]    Then, the external high-pressure air goes into the slide room  23 ′ to push the piston  31 ′ from the first position to the second position so as to enlarge the relative distance between the movable side body  54 ′ and the fixed side body  52 ′ and push back the wheel cylinder piston of the brake caliper for facilitating the service operation. 
         [0039]    Please now refer to  FIGS. 7 to 10 . The third embodiment of the complex pneumatic tool  10 ″ of the present invention is substantially identical to the second embodiment. The third embodiment is different from the second embodiment in that the third embodiment is applicable to a brake caliper with wheel cylinder pistons on both sides. Therefore, in this embodiment, the second action section  50 ″ and the first action section  40 ″ are different from those of the second embodiment as follows: 
         [0040]    The fixed side body  52 ″ and the movable side body  54 ″ of the second action section  50 ″ are similar to each other in configuration. Therefore, when the fixed side body  52 ″ and the movable side body  54 ″ are connected to the main body  21 ″ and the slide body  32 ″, the fixed side body  52 ″ and the movable side body  54 ″ serve as action ends in parallel to each other on the same side. To speak more specifically, the fixed side body  52 ″ is only different from the fixed side body of the second embodiment in configuration, while the fixed side body  52 ″ is indirectly connected to the main body  21 ″ via the duct  51 ″ by the same structure as the second embodiment. The connection post  541 ″ of the movable side body  54 ″ is slidably connected to the opening of one end of the slide body  32 ″. Moreover, the movable side body  54 ″ has a guide post  542 ″ slidably connected to the fixed side body  52 ″ for keeping the movable side body  54 ″ and the fixed side body  52 ″ aligned with each other. 
         [0041]    The elongated rod  41 ″ of the first action section  40 ″ coaxially extends into the slide body  32 ″. One end of the elongated rod  41 ″ abuts against the connection post  541 ″. A section of the elongated rod  41 ″ is formed with a thread  411 ″ correspondingly screwed in a thread formed on inner wall face of the slide body  32 ″. 
         [0042]    According to the above arrangement, the usage of the complex pneumatic tool  10 ″ is similar to that of the second embodiment. However, in this embodiment, the elongated rod  41 ″ is screwed in the slide body  32 ″ to outward push the connection post  541 ″ so as to enlarge the distance between the movable side body  54 ″ and the fixed side body  52 ″. Accordingly, in the case that the power of the external high-pressure air source is insufficient to move the movable side body  54 ″ to a desired position, a user can use the elongated rod  41 ″ to push the connection post  541 ″ so as to move the movable side body  54 ″ to the desired position for facilitating operation. 
         [0043]    The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.

Technology Category: 7