Frame for pistol with removable metal rail

Abstract

The present invention relates to a frame for a pistol with a removable metal rail, in which a pistol has a slide made of a plastic material, and which is capable of preventing the gap between the slide and the rail of the frame from occurring due to thermal deformation, and separately disassembling the frame unit and the rail of the frame from each other to replace them as occasion demands. According to an aspect of the invention to achieve the object described above, there is provided a frame for a pistol with a removable metal rail, a pistol having a slide made of a reinforced plastic material, the frame including: a frame unit made of a metal material and having a handle and first and second insertion parts formed at its upper portion, the first and second insertion parts being spaced at a predetermined distance from each other; and front and rear rail blocks made of a metal material and fixedly inserted into the respective first and second insertion parts, the slide being slidably assembled to both upper sides of the front and rear rail blocks, wherein: the first insertion part has an insertion groove having a predetermined depth, the insertion groove having a fastening hole formed through both sides thereof; and the front rail block has an insertion protrusion protruding downward from its bottom surface by a predetermined length such that the insertion protrusion is inserted into the insertion groove, the insertion protrusion having a through-hole formed through both sides thereof to communicate with the fastening hole.

1 . A frame for a pistol with a removable metal rail, a pistol having a slide ( 1 ) made of a reinforced plastic material, the frame comprising:
 a frame unit ( 10 ) made of a metal material and having a handle and a first insertion part ( 11 ) and a second insertion part ( 12 ) formed at its upper portion, the first insertion part ( 11 ) and the second insertion part ( 12 ) being spaced at a predetermined distance from each other; and   a front rail block ( 20 ) and a rear rail block ( 30 ) made of a metal material and fixedly inserted into the first insertion part ( 11 ) and the second insertion part ( 12 ), respectively, the slide ( 1 ) being slidably assembled to both upper sides of the front rail block ( 20 ) and the rear rail block ( 30 ), wherein:   the first insertion part ( 11 ) has an insertion groove ( 11 C) having a predetermined depth, the insertion groove ( 11 C) having a fastening hole ( 11 C′) formed through both sides thereof,   wherein the insertion groove ( 11 C) is located at a center of the frame unit ( 10 ) in a transverse direction; and   the front rail block ( 20 ) has an insertion protrusion ( 27 ) protruding downward from its bottom surface by a predetermined length such that the insertion protrusion ( 27 ) is inserted into the insertion groove ( 11 C), the insertion protrusion ( 27 ) having a through-hole ( 27 A) formed through both sides thereof to communicate with the fastening hole ( 11 C′),   wherein the insertion protrusion ( 27 ) is located at a center of the frame unit ( 10 ) in a transverse direction.   
     
     
         2 . The frame for a pistol with a removable metal rail as claimed in  claim 1 , wherein the second insertion part ( 12 ) comprises:
 an inclined contact portion ( 12 A) that is inclined at a predetermined angle;   a horizontal contact portion ( 12 B) that is spaced rearward at a predetermined distance from the inclined contact portion ( 12 A) and has a horizontal surface;   a curved portion ( 12 C), the upper end of which is connected to the horizontal contact portion ( 12 B) while the other end thereof is curved downward in an arc form; and   a vertical contact portion ( 12 D) having a vertical surface while the upper end thereof is connected to the lower end of the curved portion ( 12 C) wherein:   a pair of pin coupling holes (H 1  and H 2 ) is formed through both sides of the second insertion part between the inclined contact portion ( 12 A) and the vertical contact portion ( 12 D) and between the inclined contact portion ( 12 A) and the curved portion ( 12 C), respectively.   
     
     
         3 . The frame for a pistol with a removable metal rail as claimed in  claim 2 , wherein the rear rail block ( 30 ) comprises:
 a first contact part ( 31 ) that is inclined to come into surface contact with of the inclined contact portion ( 12 A) of the second insertion part ( 12 ) while the rear rail block ( 20 ) is inserted into the second insertion part ( 12 );   a rear support part ( 32 ) that has a second contact part ( 32 A) formed at the bottom surface thereof to come into surface contact with the horizontal contact portion ( 12 B);   a connection portion ( 33 ) having an arc shape that is spaced at a predetermined distance from the curved portion ( 12 C);   a third contact part ( 34 ) that comes into surface contact with the vertical contact portion ( 12 D) while the upper end thereof is connected to the lower end of the connection portion ( 33 ); and   a pair of rear rails ( 35 ) that protrudes from both sides of the rear rail block in opposite directions in the upper portion between the first contact part ( 31 ) and the rear support part ( 32 ), and each of the rear rails ( 35 ) has a horizontal length.   
     
     
         4 . The frame for a pistol with a removable metal rail as claimed in  claim 1 , wherein the front rail block ( 20 ) comprises:
 a front support part ( 21 ) that has a vertical surface coming into surface contact with the inside front of the first insertion part ( 11 );   a rear support part ( 22 ) that has an inclined surface while coming into contact with the inside rear of the first insertion part ( 11 );   a pair of front rails ( 23 ) that protrudes from both sides of the front rail block in opposite directions in the upper portion between the front support part ( 21 ) and the rear support part ( 22 ) and each of the front rails ( 23 ) has a horizontal length;   a slide lock through-hole ( 24 ) that is formed through the side surfaces between the rear support part ( 22 ) and the front rails ( 23 ); and   a recoil spring installation groove ( 25 ) having a predetermined depth that is formed between the pair of the front rails ( 23 ).   
     
     
         5 . The frame for a pistol with a removable metal rail as claimed in  claim 1 , wherein the front rail block ( 20 ) and the rear rail block ( 30 ) are made of an aluminum material. 
     
     
         6 . The frame for a pistol with a removable metal rail as claimed in  claim 1 , wherein the front rail block ( 20 ) has groove portions ( 26 ) formed by cutting both sides thereof by a predetermined depth to reduce the weight of the front rail block ( 20 ). 
     
     
         7 . The frame for a pistol with a removable metal rail as claimed in  claim 4 , wherein a first slide lock support protrusion ( 24 A) and a second slide lock support protrusion ( 24 B) are formed in the recoil spring installation groove ( 25 ), and extend from the slide lock through-hole ( 24 ) 
     
     
         8 . The frame for a pistol with a removable metal rail as claimed in  claim 7 , wherein guide grooves ( 24 A′ and  24 B) are formed in the middle portions of the first and the second slide lock support protrusions ( 24 A and  24 B), respectively. 
     
     
         9 . The frame for a pistol with a removable metal rail as claimed in  claim 1 , wherein the first insertion part ( 11 ) has only one single insertion groove ( 11 C) and the front rail block has only one single insertion protrusion ( 27 ).