Patent Publication Number: US-10773367-B2

Title: Nail blocking member for nail gun

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to nail guns, and more particularly, to a nail blocking member for nail gun. 
     2. Description of the Related Art 
     In a pallet factory, a large amount of nailing operations are carried out, such that the staff apply a nail gun for executing the nailing operation. 
     Referring to  FIG. 1  and  FIG. 2 , a nail gun  1  includes a firing portion  3  for firing a nail  2 . The user applies the firing portion  3  to press two stacked boards  4  upon the nail blocking member  5 . When the firing portion  3  fires the nail  2  to the stacked boards  4 , the nail  2  passes through the stacked boards  4 , so as to be bent into a J form due to the blockage of the nail blocking member  5 . Therefore, the nail  2  is fixed on the stacked boards  4 . 
     The surface  6  of a conventional nail blocking member  5  is formed in a plane shape. The stacked boards  4  are pressed upon the surface  6  of the nail blocking member  5  by the firing portion  3 . However, the nail  2  is fired by the firing portion  3  along a random radial direction. When the nail  2  hits the surface  6  of the nail blocking member  5 , due to the random radial firing direction, the bending angle of the nail  2  may not conform to the desired bending orientation. Therefore, the nail  2  is possibly bent into a shape other than the desired J shape. 
     If the nail  2  is not bent into the J shape, as a result, the stacked boards  4  are unable to be completely combined, such that the nail  2  may possibly be detached from the stacked boards  4 , causing the stacked boards  4  to be not usable. In addition, with the bent nail  2  projecting from the stacked boards  4 , injuries might be caused upon the transporters of the stacked boards. 
     SUMMARY OF THE INVENTION 
     For improving the issues above, an embodiment of the present invention discloses a nail blocking member for nail gun. When the nail passes through the object to hit the guiding block, the guiding block guides the nail to move along the formation groove, such that the nail is bent along the formation groove. Therefore, by use of the guiding block and the formation groove, the nail is allowed to be bent into the desired shape and fixed on the object. 
     For achieving the aforementioned objectives, a nail blocking member for nail gun in accordance with an embodiment of the present invention is provided. The nail gun includes a firing portion for firing a nail. When an object is pressed upon the nail blocking member by the firing portion, the nail is fired by the firing portion of the nail gun, so as to pass through the object. The nail blocking member includes: 
     a main body provided with a contact face, with a formation groove concavely disposed on the contact face, and a guiding block protruding from the formation groove, 
     wherein an object is pressed upon the contact face by the firing portion, and a nail is fired by the firing portion to enter the object to hit the guiding block, such that the nail is guided by the guiding block to move toward the formation groove, so as to be bent along the formation groove and reversely folded into the object. 
     With such configuration, when the nail is fired by the firing portion, the guiding block guides the nail to the formation groove, and the nail is bent along the formation groove. Therefore, the issue of the nail unable to be bent in a desired manner when hitting the plane shaped nail blocking member is resolved 
     In an embodiment of the present invention, a guiding face is disposed inclined to connect the guiding block and the formation groove. Therefore, the nail is able to move to the formation groove along the inclined guiding face, so as to be smoothly bent. 
     In an embodiment of the present invention, a transition face is disposed inclined to connect the formation groove and the contact face. Therefore, the nail is able to be folded back into the object along the transition face, so as to increase the bending effect of the nail. 
     In an embodiment of the present invention, the formation groove is formed in a circular shape, with the guiding block convexly disposed at the center of the formation groove. Therefore, when the nail is fired along a radial direction, with the guiding block guiding the nail to move toward the formation groove which surrounds the guiding block, the firing direction of the nail is prevented from affecting the bending direction of the nail, such that the nail is bent to form the desired shape. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view illustrating a conventional nail blocking member applied with a nail gun. 
         FIG. 2  is a schematic view illustrating a fired nail hitting the conventional nail blocking member. 
         FIG. 3  is a perspective view of a nail blocking member in accordance with an embodiment of the present invention. 
         FIG. 4  is a schematic view illustrating the nail blocking member in accordance with an embodiment of the present invention applied with a nail gun. 
         FIG. 5  is a schematic view illustrating a fired nail hitting the nail blocking member in accordance with an embodiment of the present invention. 
         FIG. 6  is a schematic view illustrating the nail blocking member in accordance with an embodiment of the present invention connected with a nail gun. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The aforementioned and further advantages and features of the present invention will be understood by reference to the description of the preferred embodiment in conjunction with the accompanying drawings where the components are illustrated based on a proportion for explanation but not subject to the actual component proportion. 
     Referring to  FIG. 3  to  FIG. 6 , an embodiment of the present invention provides a nail blocking member  100  for a nail gun  200 . The nail gun  200  includes a gun head  201 , a handle (not shown) and a nail magazine (not shown) connected with the gun head  201 , a firing portion  203  disposed at one end of the gun head  201  for firing nails  202 , and a trigger (not shown) disposed at one side of the gun head  201 . The user grips the handle of the nail gun  200 . The nail magazine contains a plurality of nails  202 . The nail  202  includes a head end  202   a  and a tail end  202   b . A cavity is disposed between the gun head  201  and the handle, such that the cavity is connected with a pressure source, allowing a compressed air to enter into the cavity. 
     When user needs to fire the nail  202  through an object  204 , the nail blocking member  100  is placed on a plane, such as a table or the ground surface which is able to hold the nail blocking member  100 , and presses the object  204  upon the nail blocking member  100  with the firing portion  203 . Then, the user controls the trigger, driving the compressed air to strike the nail  202 , such that the nail  202  is fired by the firing portion  203  to enter the object  204 . As a result, the head end  202   a  of the nail  202  is stuck on the surface of the object  204 , and the tail end  202   b  of the nail  202  passes through the object  204 . The object  204  is allowed to be wood boards, stacked boards, or pallets. 
     The nail blocking member  100  of the present invention includes a main body  10 . 
     The main body  10  includes a contact face  11  and a bottom face  12  disposed in opposite to the contact face  11 . The contact face  11  includes a concave formation groove  13  having a plane-shaped groove bottom, with a guiding block protruding from the formation groove  13 . In an embodiment of the present invention, the main body  10  is formed of a metal material. The contact face  11  is formed in a plane shape. The formation groove  13  is formed in an approximate circular shape. The guiding block  14  projects at the center of the formation groove  13 , with the bottom face  12  of the guiding block  14  formed in an approximate circular shape and. In other words, the formation groove  13  is concavely formed around the guiding block  14 , and the contact face  11  is convexly formed around the formation groove  13 . 
     A guiding face  15  is disposed to be connected between the guiding block  14  and the formation groove  13 . Also, the guiding face  15  is disposed inclined. Also, the guiding face  15  expands from the guiding block  14  toward the formation groove  13 . The junction between the guiding face  15  and the formation groove  13  is formed in an arc shape. In an embodiment of the present invention, the junction between the guiding face  15  and the guiding block  14  is formed in an arc face, and the junction between the guiding face  15  and the formation groove  13  is formed in an arc face, wherein the arc face between the guiding face  15  and the guiding block  14  is larger than the arc face between the guiding face  15  and the formation groove  13 . 
     A transition face  16  is disposed to be connected between the formation groove  13  and the contact face  11 . Also, the transition face  16  is disposed inclined. Also, the transition face  16  expands from the contact face  11  toward the formation groove  13 . In an embodiment of the present invention, the formation groove  13  and the transition face  16  include an obtuse angle, and the transition face  16  and the contact face  11  include an obtuse angle. 
     When the object  204  is to be processed, the object  204  is pressed upon the contact face  11  by the firing portion  203 . The user controls the trigger, so as to fire the nail  202  by the firing portion  203 . The tail end  202   b  of the nail  202  passes through the object  204  and hits the top face  141  of the guiding block  14 , such that the tail end  202   b  of the nail  202  is guided by the guiding face  15  to slide to the formation groove  13 , whereby the tail end  202   b  of the nail  202  forms a first bent portion  202   c . Because the firing portion  203  keeps pressing the object  204 , the pressing force forces the tail end  202   b  of the nail  202  to be bent along the groove bottom of the groove  13 , forming a straight section  202   d , and the transition face  16  forces the tail end  202   b  of the nail  202  to form a second bent portion  202   e , such that the tail end  202   b  of the nail  202  is folded back toward the object  204 . Therefore, the nail  202  is bent into a J form, as shown by  FIG. 5 . Therein, the straight section  202   d  of the nail  202  is connected with the first bent portion  202   c  and the second bent portion  202   e  therebetween. 
     In addition, a distance from the bottom face  12  to the contact face  11  is defined as a first length L 1 ; a distance from the bottom face  12  to the top face  141  of the guiding block  14  is defined as a second length L 2 ; the first length L 1  is larger than or equal to (not smaller than) the second length L 2 . In an embodiment of the present invention, the first length L 1  is equal to the second length L 2 . When the first length L 1  is larger than or equal to the second length L 2 , the object  204  is stably pressed upon the contact face  11  or upon the contact face  11  and the top face  141  of the guiding block  14 . Therefore, upon firing the nail  202  by the firing portion  203 , a gap is prevented from being generated between the contact face  11  and the object  204 , so as to assure that the nail  202  is smoothly bent. 
     In another embodiment of the present invention, referring to  FIG. 6 , the main body  10  includes a connection portion  17  which is convexly disposed at the bottom face  12 . The connection portion  17  is connected with the clamp  205  of the nail gun  200 . The contact face  11  faces the firing portion  203  of the nail gun  200 . In an embodiment of the present invention, the main body  10  is fixed to one end of the clamp  205  of the nail gun  200  through the connection portion  17 , wherein the clamp  205  of the nail gun  200  is allowed to pivot against the firing portion  203 . When the clamp  205  moves away from the firing portion  203 , the object  204  is optionally released from or placed between the main body  10  and the firing portion  203 . When the clamp  205  moves toward the firing portion  203 , the clamp  205  is allowed to clamp the object  204 . 
     When the object  204  is to be processed, the object  204  is clamped by the clamp  205  and the firing portion  203  of the nail gun  200 , such that the object  204  is pressed upon the contact face  11  by the firing portion  203 . Then, the user controls the trigger to fire the nail  202  by the firing portion  203 . The tail end  202   b  of the nail  202  passes through the object  204  and hits the top face  141  of the guiding block  14  and is further guided by the guiding face  15  to slide to the formation groove  13 . As a result, the tail end  202   b  of the nail  202  is bent according to the shape of the formation groove  13 , and is further folded back toward the object  204 . Therefore, the nail  202  is bent into a J shape. 
     With the nail blocking member  100  of the present invention, when the nail  202  passes through the object  204  to hit the main body  10  of the nail blocking member  100 , the nail  202  efficiently slides along the inclined guiding face  15  and the arc face conjunction to the formation groove  13 , with the tail end  202   b  of the nail  202  being further folded back toward the object  204  through the transition face  16 . Therefore, the nail  202  is smoothly bent into the desired J shape. 
     Furthermore, when the nail  202  is fired by the firing portion  203  along a radial direction, with the guiding face  15  disposed between the guiding block  14  and the formation groove  13  surrounding the guiding block  14 , the nail  202  is allowed to be bent into the J shape without being affected by the random radial firing direction. 
     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.