Abstract:
A nailing device of the present invention mainly includes a striker for driving nails, a restriction mechanism, a power storing mechanism, and an operation mechanism. By cooperation of the components, the striker is kept in position without moving during the course of power storing, and the striker is automatically recovered to an initial position after firing. Thus, nail can fill to the right position accurately in continuous work. For continuously and quickly working, the nailing device is protected from nail jamming.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a nailing device. 
         [0003]    2. Description of the Prior Art 
         [0004]    Conventional nailing device, as described in U.S. Pat. No. 5,505,362, U.S. Pat. No. 5,816,470, or U.S. Pat. No. 6,789,719, has a handle for user to press. By connection of linkage, the handle drives striker to move, lifts the striker, and compresses spring or elastic plate. The spring or the elastic plate saves power for strike. As the striker is further lifted, the striker separates from the linkage. The striker is then moved by the power saved by the spring or elastic plate, and moves downwardly quickly for firing nail. 
         [0005]    Such nailing device can be malfunctioned easily in practical using. In the nailing device, the firing mechanism is achieved by automatic separation of the linkage which moves in a sector and the striker which moves is a line. After long or heavy use, the striker and the linkage would be abraded. Timing of separation of the linkage and the striker is then advanced. As a result, the power saved by spring is decreased. Nail may be fired with a weakened power which is not enough for nailing objects. Secondly, size and position inaccuracy caused in manufacturing or caused by collision can considerably change the timing of the separation, also. As a result, the nailing device would work with weakened power or even malfunction frequently. 
         [0006]    In addition, some other reasons may cause malfunction of the nailing device, also. In the nailing device, the striker is generally kept located at the position where the striker strikes the nail. In other words, the striker stays behind after striking the nail. The striker would keep touching and block the rest nails until the linkage lift the striker again. After then, the nails moves forward and the striker moves downward after releasement, and the firing mechanism is completed. If user drives the handle and the striker continuously and quickly, the nail may not be able to move forward to the accurate firing position immediately. As a result, the nail would be intruded into the firing hole, damaging the nailing device. 
         [0007]    The present invention is, therefore, arisen to obviate or at least mitigate the above mentioned disadvantages. 
       SUMMARY OF THE INVENTION 
       [0008]    The main object of the present invention is to provide a durable nailing device which is suitable for continuous working. 
         [0009]    To achieve the above and other objects, a nailing device whose striker is pre-separated from nail of the present invention includes a housing, a striker, a restriction mechanism, a power storing mechanism, and an operation mechanism. The striker is slidably disposed in the housing. The striker is able to slide linearly along a striking direction between an initial position and a strike position. The striker drives a nail out of the housing when the striker slides from the initial position to the strike position. 
         [0010]    The restriction mechanism is utilized for restricting the striker when the striker is located at the initial position, so that the striker is kept located at the initial position. The restriction mechanism is able to be triggered off to release the striker. Releasement of the restriction mechanism makes the striker to be able to slide arbitrarily. 
         [0011]    The power storing mechanism abuts against the striker. The power storing mechanism is able to switch between a repose condition and a store condition. The power storing mechanism exerts an elastic force on the striker under the store condition. The elastic force gives the striker a tendency to slide toward the strike position. 
         [0012]    The operation mechanism is utilized for switching the power storing mechanism between the repose condition and the store condition. 
         [0013]    The striker is kept located at the initial position during course of switching the power storing mechanism from the repose condition to the store condition. 
         [0014]    Accordingly, in operation, the striker would be kept in position when user presses on the operation mechanism. Nail can move to the accurate position before user drives the nailing device. Though the nailing device works continuously and quickly, the nails can still move to the accurate position quickly. Thus, opportunity of malfunction or damage of the nailing device is reduced. 
         [0015]    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 
         [0016]      FIG. 1  is a stereogram showing a first embodiment of the present invention; 
           [0017]      FIG. 2  is a stereogram showing internal structure of a first embodiment of the present invention; 
           [0018]      FIG. 3  is a breakdown drawing showing a first embodiment of the present invention; 
           [0019]      FIG. 4  is a profile showing a first embodiment of the present invention; 
           [0020]      FIG. 5  and  FIG. 6  are schematic drawings showing an operation condition of a first embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0021]    Please refer to  FIG. 1  for a first embodiment of the present invention. The nailing device of the present embodiment is provided for receiving nails and adapted for user to manually press down for storing power for striking the nail on an object. Please refer to  FIG. 1  to  FIG. 3 , the nailing device of the present embodiment includes a housing  1 , a striker  2 , a restriction mechanism  3 , a power storing mechanism, and an operation mechanism  5 . 
         [0022]    The housing mainly includes two semi-housings  11  and a magazine  12 . The semi-housings  11  are affixed to each other by screws, adapted for the magazine  12  and other components to be received and disposed in the housing  1 . The housing has a bottom side  13 , a top side  14  corresponding to the bottom side, and a front side  15  and a rear side  16  which are corresponding to each other. The bottom side  13  is adapted for abutting against an object and for nails to be strike out from. The magazine  12  is loaded and received in the housing from the rear side  16 , so that the nails filled inside can be stroke out from the bottom side  13  approaching the front side  15 . 
         [0023]    The striker  2  is slidably disposed in the housing  1 , more specifically, is vertically located approaching to the front end  15  and above the magazine  12 . The striker  2  is able to linearly slide along a striking direction between an initial position and a strike position. The striker  2  moves downwardly toward the bottom side  13  and drives the nail beneath out of the housing  1  when the striker  2  moves from the initial position toward the strike position. The striker  2  is provided as a plate. The striker  2  is formed with a mount slot  21  and an engage slot  22 . A top end of the striker  2  is formed with a guide plate  23  which is bent and tilted aiming the top side  14  and the rear side  16 . 
         [0024]    The restriction mechanism  3  is utilized for restricting the striker  2  when the striker  2  is located at the initial position, so that the striker  2  is kept located at the initial position. The restriction mechanism  3  can be triggered off to release the striker  2 . Releasement of the restriction mechanism  3  makes the striker  2  to be able to slide arbitrarily. More specifically, the restriction mechanism  3  includes a pivotable member  31  and a recovery spring  32 . The pivotable member  31  has a trigger section  311 , a pivoting hole  312 , and an engage section  313 . The pivoting hole  312  is located between the trigger section  311  and the engage section  313 . The pivoting hole  312  sleeves about a pole  17  which is formed in the housing. Thus, the pivotable member  31  is pivotably mounted to the housing  1  about an axis which is defined by the pivoting hole  312  and the pole  17 . The pole  17  is located between the trigger section  311  and the engage section  313 . More particularly, the trigger section  311  extends from the pole  17  toward the rear side  16 , and partially exposes outwardly from the top side  14 . Thus, the trigger section  311  is adapted for user or other components to press thereon. The engage section  313  extends from the pole  17  toward the bottom side  13 . The distal end of the engage section  313  is formed with a hook. The pole  17  is located above the striker  2 . In other words, a direction of the pole  17  relative to the striker  2  or a direction aiming form the striker  2  toward the pole  17  is opposite to the striking direction. Thus, the distal end of the trigger section  311  and the distal end of the engage section  313  are respectively located at sides divided by an extension from the striking direction. The pivotable member  31  is able to pivot between an engage position and a release position. When the pivotable member  31  is located at the engage position and the striker  2  is located at the initial position, as shown in  FIG. 4 , the engage section  313  moves toward the rear side  16  and engages the engage slot  22 . Thus, the striker  2  is kept located at the initial position and is unable to slide toward the strike position. When the pivotable member  31  is located at the release position, the engage section  313  is released from the engage slot  22 . Thus, the striker  2  is able to slide arbitrarily. When the pivotable member  31  pivots between the engage position and the release position, the movement direction of the distal end of the trigger section  311  is substantially parallel to the striking direction, and the movement direction of the distal end of the engage section  313  is substantially perpendicular to the striking direction. In fact, by pivot of the pivotable member  31 , the distal ends of the trigger section  311  and the engage section  313  move along arc paths, rather than straight lines. That is to say, movement directions of the distal ends of the trigger section  311  and the engage section  313  can not be kept exactly parallel or perpendicular to the striking direction. However, the movement directions here still approach the directions as described above. 
         [0025]    The recovery spring  32  of the restriction mechanism abuts against the pivotable member  31  and the housing  1 . More particularly, the recovery spring  32  abuts against the trigger section  311 , inducing an elastic recovery force to press on the pivotable member  31 . Thus, the pivotable member  31  is generally located at the engage position. 
         [0026]    The power storing mechanism abuts against the striker  2 . The poser storing mechanism can be switched between a repose condition and a store condition. Under the store condition, the power storing mechanism exerts an elastic force on the striker  2 . The elastic force gives the striker  2  a tendency to slide toward the strike position. Thus, once the restriction mechanism  3  is triggered off and the pivotable member  31  sways to the release position, the striker  2  would move downwardly quickly and drive a nail out of the housing. More specifically, the power storing mechanism includes an elastic plate  41  and a recovery spring  42 . The elastic plate  41  has a first end  411  and a second end  412  which are away from each other. The elastic plate  41  is sandwiched by two pins  18  which are adjustably disposed in the housing  1  so as to arrange the elastic plate  41  in the housing  1 . The elastic plate  41  is able to pivot with respect to the housing  1 , so that the first end  411  and the second end  412  moves along opposite directions when the elastic plate  41  sways. The first end  411  inserts into the mount slot  21  of the striker, making the striker  2  move together with the first end  411 . The second end  412  extends toward the rear side  16 . The elastic plate  41  is adapted for bending, switching the power storing mechanism to the store condition. Said bending is to bend and deform the elastic plate  41  temporarily. The original appearance of the elastic plate  41  may be, but not limited in flat plate or curved plate. The recovery spring  42  abuts against the second end  412  and the housing  1 . The recovery spring  42  induces a recovery force to press on the elastic plate  41 . Because of the recovery force, the second end  412  of the elastic plate  41  generally moves toward the bottom side  13 , and the first end  411  generally moves toward the top side  14 . Thus, the striker  2  is generally recovered to the initial position. 
         [0027]    The operation mechanism  5  is used for switching the power storing mechanism between the repose condition and the store condition. More specifically, the operation mechanism  5  includes a handle  51  and a linkage  52 . The handle  51  is pivotably mounted to the housing  1 , approaching to the rear side  16  and the top side  14 . The handle  51  can switch, actually pivot in the embodiment, between a general position and an operation position. One end of the handle  51  extends toward the front side  15  and is exposed outwardly to the surrounding. Preferably, the handle  51  can be further covered by plastic cover. Thus, the handle is suitable for user to press and sway. The other end of the handle  51  extends toward the bottom side  13 . The linkage  52  is pivotably mounted to the housing  1 . One end of the linkage  52  extends toward the top side  14  and pivotably mounted to the end of the handle  51  which extends toward the bottom side  13 . The other end of the linkage  52  extends toward the front side  15  and abuts against a lower surface of the second end  412  of the elastic plate. Preferably, the linkage  52  is provided with roller  521  which serves for abutting the elastic plate  41 . The operation mechanism may further include a torsion spring  53 . The torsion spring  53  abuts against the handle  51  and the housing  1 , so that the handle  51  is generally located at the general position. 
         [0028]    Accordingly, please refer to  FIG. 4 , by the contribution of the elastic forces provided by the recovery springs  32 ,  42 , the torsion spring  53 , and the elastic plate  41 , the handle  51  is generally located at the general position. The elastic plate  41  is under the repose condition. The striker  2  is located at the initial position. The pivotable member  31  of the restriction mechanism is located at the engage position. Thus, the engage section  313  engages the striker  2 , and the striker  2  is kept located at the initial position. 
         [0029]    Please refer to  FIG. 5 . When user tries to operate the nailing device, the handle  51  is manually pressed to sway toward the operation position. Then, the linkage  52  pushes the second end  412  of the elastic plate  41  toward a direction which aims the top side  14  and opposites to the striking direction. Since the first end  411  of the elastic plate  41  inserts in the striker  2 , and motion of the striker  2  is restricted at the initial position by the restriction mechanism, both of the first end  411  and the striker  2  are unable to move. Thus, the elastic plate  41  is pressed and bent. The power storing mechanism is then switched to the store condition. 
         [0030]    Please refer to  FIG. 6 . User can further press the handle  51 . As the handle  51  sways, the handle  51  would finally touch and trigger off the trigger section  311  of the pivotable member  31 . The trigger section  311  is pressed downward toward the bottom side  13 , so that the pivotable member  31  sways to the release position. The engage section  313  disengages with the engage slot of the striker  2 . Accompanied with the disengagement, the striker  2  is moved quickly and downwardly along the striking direction toward the bottom side  13  because of the elastic force provided by the elastic plate  41 . Thus, the nail located under the striker  2  is driven or stroke out of the housing. To ensure the trigger section  311  being triggered off, the handle  51  may be formed with a protrusion  511  corresponding to the trigger section  311 . The protrusion  511  can press the trigger section  311  in operation. 
         [0031]    When the handle  51  is released, the components are recovered to the positions as shown in  FIG. 4  by the elastic forces provided by the recovery springs  32 ,  42 , the torsion spring  53 , and the elastic plate  41 . Thus, the nailing device is suitable for continuous operation. 
         [0032]    According to the embodiment, the nailing device has a striker which is pre-separated from the nail loaded in the nailing device. After nail is driven out of the housing, the next nail can move forward and fill the vacancy immediately before user press the handle again. Thus, chance of nail filling inaccuracy is considerably reduced. Motion of the nail and the striker is smoothened. Nailing device is protected from nail jamming. In addition, the nail device is suitable for working continuously and quickly. 
         [0033]    Moreover, the striker is general separated from nails. Abrasion of the striker caused by nail contact is minimized. Rust of the nails can now seldom damage the striker. Thus, lifetime of the striker of the nailing device is prolonged. 
         [0034]    Besides, the linkage equipped in the nailing device pushes the second end of the elastic plate which is located away from the striker. Thus, lever of the linkage can be controlled for labor-saving.