Abstract:
A nailer includes a housing, a handle connecting the housing, a combustion chamber and a cylinder inside the housing, a piston whose rear end is inside the cylinder, a cage covering the exterior front end of the cylinder with the front end abutting on that of the cylinder, and a pin guide component that separately connects the nailer and further includes a nose piece, a guide sleeve whose lower end links the pin guide, an adjusting threaded rod whose front end connects the upper end of the guide sleeve and rear end links the upper end of the rear sleeve, a knob, a rear sleeve inserted into the adjusting threaded rod and fixed between the upper end of the guide sleeve and that of the rear sleeve, and a piston guide. The nailer boasts capability of pin guide replacement, quick troubleshooting and regulation of the nail driving depth.

Description:
BACKGROUND OF THE PRESENT INVENTION 
       [0001]    1. Field of Invention 
         [0002]    The present invention relates to a nailer, and more particularly, to a new nailer with elements adjusting nail driving depth and facilitating quick troubleshooting. 
         [0003]    2. Description of Related Arts 
         [0004]    Currently, a nailer is a type of tool widely used in industries, such as construction and decoration. Commonly-seen nailers generally have a single function. For instance, the nail guide assembly cannot be dismantled and replaced with other types of nail pipes for realizing different functions and applications; the pin guide component and the track cannot be dismantled for quick troubleshooting; or the pin guide cannot be adjusted forwards or backwards to cater different requirement on the driving depth. All these will cause inconvenience in use of the nailers. 
       SUMMARY OF THE PRESENT INVENTION 
       [0005]    For the abovementioned reasons, the purpose of the present invention is to provide a new nailer with elements adjusting nail driving depth and facilitating quick troubleshooting. 
         [0006]    A new nailer, comprises a housing, a handle that connects the housing, an combustion chamber and a cylinder inside the housing, a piston whose rear end is located inside the cylinder, a cage that covers the exterior front end of the cylinder, with the front end abutting on that of the cylinder, wherein the combustion chamber wraps the exterior rear end of the cylinder, and the rear end of the cage is connected with the front end of the combustion chamber, a head cover positioned on the rear end of the housing, a cylinder head on the rear end of the cylinder, an O-ring inside the cylinder, a nose piece connected with the front end of the housing, a pin guide whose rear end is inside the guide sleeve, and a track assembly below the guide sleeve that connects with it, a pin guide component that can separately connect the nailer, which comprises a pin guide, a guide sleeve, a nose piece, an adjusting threaded rod, a knob, a rear sleeve and a piston guide, wherein the lower end of the guide sleeve is linked with the pin guide; the front end of the adjusting threaded rod is connected with the upper end of the guide sleeve while its rear end is linked with the upper end of the rear sleeve; the knob is inserted into the adjusting threaded rod and is fixed between the upper end of the guide sleeve and that of the rear sleeve, the rear end of the rear sleeve is positioned at the top of the rear end of pin guide and abuts on the front end of the cage; the front end of the piston guide is inside the rear sleeve while its lower rear end connects the pin guide. 
         [0007]    Furthermore, two semicircular tanks are below the guide sleeve and the rear sleeve respectively. The guide sleeve is provided with two annular bosses. The lower end of the guide sleeve connects the segment of the pin guide between the two annular bosses. An arc boss is fixed below the rear end of the piston guide, which matches with a square hole on the nose piece. 
         [0008]    A nail feeder is set above the track assembly, which includes a pin-free contact, a nail pushing head and a perforated stud. 
         [0009]    The nailer further comprises a connection component for installation of the track assembly, which comprises a connection plate holder, a connection plate, a hook, a connection plate cover, a wrench, a washer, a guide rail lock and a torsional spring. The connection plate mounted on the handle is provided with a first and second hole. The connection plate holder is provided with a first and second screw column that corresponds to the first and second hole. The first screw column goes through the first hole, the hook, the connection plate cover and the wrench in sequence, and become fixed via the fastener and the washer. The second screw column goes through the second hole, the track lock and the connection plate cover in sequence, and become fixed via the fastener and the washer. The torsional spring nests the track lock, with one claw suspended on the track lock and the other claw on the hook. 
         [0010]    The hook has a hook portion which abuts on a concave tooth of the track lock. The semicircular buckle of the guide rail buckle meshes with a semicircular notch of the track lock. 
         [0011]    The favorable effects of the present invention: when the adjusting screw nut is rotated to separate the knob from the guide sleeve, the pin guide can be dismantled and replaced by other types of pin guides; as to failures like nail jamming, after the dismantlement of the track assembly through the connection component, the nail pipe is demounted and the nail stuck is removed, thus leading to quick troubleshooting; the adjusting threaded nut is rotated to change the total length of the pin guide and the guide sleeve, adjusting nail driving depth. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0012]      FIG. 1  is the sectional view of the present invention seen in a certain angle; 
           [0013]      FIG. 2  is the exploded view of the pin guide component in the present invention; 
           [0014]      FIG. 3  is the exploded view of the track assembly in the present invention; 
           [0015]      FIG. 4  is the exploded view of the connection component in the present invention; 
           [0016]      FIG. 5  is the schematic view of the comparison of different nail driving depths in the present invention; 
           [0017]      FIG. 6  is the schematic view of the installation and dismantlement of the track assembly in the present invention; 
           [0018]      FIG. 7  is the schematic view of the connection between the piston guide and the pin guide in the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0019]    For a better understanding for those skilled in this art, the present invention is further detailed by the embodiments in combination with the drawings as below. 
         [0020]    The nail driving direction of the nailer in the embodiments is uniformly defined as forward. 
         [0021]    As shown in  FIGS. 1-2 , a new nailer comprises a housing  1 , a handle  2  that connects the housing, an combustion chamber  3  and a cylinder head  4  inside the housing, a piston  5  whose rear end is located inside the cylinder head  4 , a cage  6  that covers the exterior front end of the cylinder head  4 , with the front end abutting on that of the cylinder, wherein the combustion chamber  3  wraps the exterior rear end of the cylinder, and the rear end of the cage  6  is connected with the front end of the combustion chamber  3 , thus the connection and disconnection between the combustion chamber  3  and the cylinder head  4  can be controlled, a head cover  7  positioned on the rear end of the housing, a cylinder head  8  on the rear end of the cylinder, a bumper  9  inside the cylinder; a nail nose piece  10  connected with the front end of the housing, a pin guide  11  whose rear end is inside the guide sleeve, and a track assembly below the nose piece  10  that connects with it. 
         [0022]    The nailer further comprises a guide sleeve  12 , an adjusting threaded rod  13 , a knob  14 , a rear sleeve  15  and a piston guide  16 . Two semicircular tanks  121  and  151  are below the guide sleeve  12  and the rear sleeve  15  respectively. The pin guide  11  is provided with two annular bosses  111 . The lower end of the guide sleeve  12  connects the segment of the guide sleeve  11  between the two annular bosses  111 . An arc boss  161  is fixed below the rear end of the piston guide  16 , which matches a square hole  101  on the nose piece  10 . 
         [0023]    The front end of the adjusting threaded rod  13  is connected with the upper end  122  of the regulator while its rear end is linked with the upper end  152  of the sleeve. The knob  14  is inserted into the adjusting threaded rod  13  and located between the upper end  122  of the regulator and the upper end  152  of the sleeve. The rear end of the rear sleeve  15  is positioned inside the rear end of the nose piece  10  and abuts on the front end of the cage  6 . 
         [0024]    As shown in  FIG. 2 , the nail guide components comprise the nose piece  10 , the pin guide  11  whose rear end is inside the guide sleeve, the guide sleeve  12 , the threaded screw rod  13 , the knob  14 , the rear sleeve  15  and the piston guide  16 . The order to install them is as follows. The piston guide  16  is installed firstly, with its arc boss  161  fitting into the square hole  101  that is interlinked with the inner cavity of the nose piece  10 . The rear sleeve  15  is slide into the pin guide. The semicircular tank  121  at the bottom of the guide sleeve is fixed on the segment of the pin guide  11  between the two annular bosses  111 , and the finished part as a whole is slide into the nose piece  10 . The connection portion of the adjusting threaded rod  13  and the upper end  152  of the sleeve is screwed on the driver by the adjusting threaded nut  14 . Therefore, the nail guide component is formed. If the nail guide component needs to be dismantled, this can be done in reverse order, so as to clean or remove failures. 
         [0025]    As shown in  FIG. 3 , the track assembly includes a pinch plate  17 , a nail feeder  18 , a nail feeding support  19 , a spring  20 , a nail feeding button  21 , a coil spring  22 , a track  23 , a rubber stopper  24 , a track connector  25 , a track nut  26  and a track cap  27 . 
         [0026]    The track  23  is provided with a first sliding chute  231  and a second sliding chute  232 . Lugs  191  are set on both sides of the nail feeding support  19  to match with the first and second sliding chutes. A first notch  231  a is made on the upper end of the back panel of the first sliding chute, in which a hanger  221  of the coil spring  22  is suspended and one end of the rubber stopper  24  is located. A second notch  233  is made on the back panel that is vertical to the back panel of the first sliding chute, which is diagonally below the first notch  231   a.    
         [0027]    The track connector  25 , which is bolted on the track  23 , is provided with a semicircular buckle  251 . The track cap  27  is set below the track  23 . 
         [0028]    The nail feeder  18  includes a pin-free contact  181 , a nail pushing head  182  and a perforated stud  183 . The nail feeding support  19  is provided with an upper receiving cavity  192  and a lower receiving cavity  193 , with a round hole  192   a  on the back panel of the upper receiving cavity  192 . The perforated stud  183  goes through the round hole  192   a  to be positioned inside the upper receiving cavity  192 . The spring  20  nests the perforated stud  183 , on which the nail feeding button  21  is fixed by a fastener  28  (e.g. screw). The coil spring  22  is positioned inside the lower receiving cavity  193  through the pinch plate  17  and the fastener  28  (e.g. screw). 
         [0029]    As shown in  FIG. 4 , the nailer further comprises a connection component for installation of the guide rail assembly, which comprises a connection plate holder  29 , a connection plate  30 , a hook  31 , a connection plate cover  32 , a wrench  33 , a washer  34 , a guide rail lock  35  and a torsional spring  36 . The connection plate  30  mounted on the handle  2  is provided with a first and second hole  301  and  302 . The connection plate holder  29  is provided with a first and second screw column  291  and  292  that correspond to the first and second hole. The first screw column  291  goes through the first hole  301 , the hook  31 , the connection plate cover  32  and the wrench  33  in sequence, and become fixed via the fastener  28  (e.g. screw) and the washer  34 . The first and second screw column  292  goes through the second assembling hole  302 , the track lock  35  and the connection plate cover  32  in sequence, and become fixed via the fastener  28  and the washer  34 . A ring body  361  on the torsional spring nests a column  351 , with one claw  362  suspended on the long and narrow notch  352  of the track lock and the other claw  363  on a strip-shaped hole  311  of the hook. 
         [0030]    The hook  31  has a hook portion  312  which abuts on a concave tooth  353  of the track lock  35 . The semicircular buckle  251  of the track connector  25  meshes with a semicircular notch  354  of the track lock  35 . 
         [0031]      FIG. 5  shows a method to adjust the nailing depth. The adjusting threaded nut  14  can be rotated to allow the contact end of the guide sleeve  12  and the pin guide  11  to abut on the annular boss  111  of the pin guide  11 , so the total length of the pin guide  11  and the nose piece  10  increases, leading to shallow nail driving depth into base material. The piston  5  is pushed out by the high temperature and pressure in the cylinder head  4  and is stopped when hitting against the bumper  9 . Consequently, nailing depth is controlled. On the contrary, if deep nail driving is in need, the adjusting threaded nut  14  is rotated in reverse direction to allow the total length of the pin guide  11  and the nose piece  10  to decrease, leading to deeper nail driving. 
         [0032]    As shown in  FIG. 6 , for dismantlement of the track assembly, the wrench  33  is switched clockwise, which results in clockwise rotation of the hook  31 . Therefore, the hook portion  312  of the hook  31  separates from the concave tooth  353  of the track lock  35 , which rotates anticlockwise because of the torsional spring  36  and disconnects with the track connector  25 , leading to dismantlement of the track assembly. The end of the track  23  is inserted into the grooved body of the nose piece  10 . The semicircular buckle  251  of the track connector  25  meshes with the semicircular notch  354  of the track lock  35 , during which the hook portion  312  of the hook  31  is pushed out automatically and then hooks up the concave tooth  353  of the guide rail lock, thus locking up the track  23 . 
         [0033]    As shown in  FIG. 7 , as the piston guide  16  is embedded into the square hole  101  of the nose piece  10  via the arc boss  161 , the piston guide  16  has no displacement to the right or left relative to the nose piece  10 . As a result, the front end of the piston guide  16  always blocks the way of the topmost nail during nail driving, generating supporting force that forms balance force with the upward thrust producing by the nail feeder  18 . When the last nail on the nailing strip enters into the pin guide  11 , it will not move as the pin guide does under the action of the balance force. So the topmost nail cannot be driven out by the piston. If there are two or more than two nails, movement of the nailing strip will be restricted by a square passage below the nail guide  10 . 
         [0034]    Although the present invention is described in combination with embodiments, those skilled in the art shall know that any modifications and variations can be made without departing from the spirit of the present invention. Therefore, the spirit of present invention is subject to the claims.