Patent Application
20070267459
1. Field of the Invention
The present invention relates to a nail gun, and more particularly to a nail gun with a muzzle.
2. Description of Related Art
Pneumatic nail guns are widely used for decoration. Nails stored inside the pneumatic nail gun are driven and shot from the nail gun by compressed air.
A conventional pneumatic nail gun has a gun body and a muzzle. The muzzle is mounted on the gun body and comprises a top, a base, a channel and two elastic collars. The channel is defined between the top and the base. The muzzle has a taper shape. The top and the base are pivotally connected to the gun body with the elastic collars. The top and the base of the muzzle will be pivoted to open when a nail passes through the muzzle. Because the two elastic collars hold the top and the base of the muzzle, the movement of the top and the base held by the elastic collars cannot be expected. Therefore, a nail is applied with an unbalance force when the nail passes through the channel, and the nail will not move along a straight path.
To overcome the shortcomings, the present invention tends to provide a nail gun to mitigate the aforementioned problems.
The primary objective of the present invention is to provide a nail gun that is convenient for use.
A nail gun has a gun body, a muzzle and a spring. The muzzle is pivotally mounted on the gun body. The muzzle has a top case, a bottom case, a first pin and a second pin. The top case and the bottom case both have an engaging part and the top case and the bottom case are connected with each other by the engaging parts. A channel is formed between the top case and the bottom case. The spring is mounted between the muzzle and the gun body.
When the nail gun is in use, a nail passes through the channel, and the muzzle is pivoted to open around the pins and the engaging parts, therefore, a balance force is applied to the nail when passing through the channel to make the nail moving along a straight path.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to FIGS. 1 to 4, a nail gun in accordance with the present invention comprises a gun body (10), a muzzle (20) and a spring (30).
The gun body (10) has a distal end, a bottom, two sides, an extended tongue (101), a hole (102) and a pivot seat. The extended tongue (101) is formed on the bottom of the gun body (10). The hole (102) is defined in the extended tongue (101). The pivot seat is mounted on the distal end of gun body (10) and has two side plates (111, 121), two first pivot holes (112) and two second pivot holes (122). The two side plates (111, 121) both have a top and a bottom. The two first pivot holes (112) are respectively defined near the tops of the side plates (111, 121) of the pivot seat. The two second pivot holes (122) are respectively defined near the bottoms of the side plates (111, 121) of the pivot seat. The second pivot holes (122) correspond to and aligns with the hole (102) in the extended tongue (101).
The muzzle (20) is pivotally mounted on the pivot seat of the nail gun body (10) and has a taper shape. The muzzle (20) has a top case (21), a bottom case (22), a first pin (23) and a second pin (24). The top case (21) is pivotally mounted on the top of the pivot seat and has a proximal end, a distal end (211), two sides, a bottom surface (212), a recess (213) and an engaging part (217). The recess (213) is defined in the bottom surface (212) from the distal end (211) to the proximal end. The engaging part (217) is formed on the proximal end of the top case (21) and has two ears (214), two pivot holes (215) and multiple teeth (216). The ears (214) are respectively mounted on the two sides and each has a bottom edge. The pivot holes (215) are respectively defined through the ears (214) and correspond to the first pivot holes (112) in the pivot seat. The multiple teeth (216) are formed on the bottom edges of the ears (214). The bottom case (22) is pivotally mounted on the bottom of the pivot seat and is connected with the top case (21). The bottom case (22) has a proximal end, a distal end (221), two sides, a top surface (222), a recess (223) and an engaging part (227). The top surface (222) of the bottom case (22) faces to the bottom surface (212) of the top case (21). The recess (223) is defined in the top surface (222) and faces to the recess (213) in the top case (21) to form a channel. The engaging part (227) is formed on the proximal end of the bottom case (22) and engages with the engaging part (217) on the top case (21). The engaging part (227) has two ears (224), two pivot holes (225) and multiple teeth (226). The ears (224) are respectively mounted on the two sides and each has a top edge. The pivot holes (225) are respectively defined through the ears (224) and correspond to the second pivot holes (122) defined in the pivot seat. The multiple teeth (226) are formed on the bottom edges of the ears (214) and engage with the multiple teeth (216) on the top case (21). The first pin (23) is mounted through the pivot holes (215, 112) respectively defined in the top case (21) and the pivot seat. The second pin (24) is mounted through the pivot holes (225, 122) respectively defined in the bottom case (21) and the pivot seat.
The spring (30) is mounted around the second pin (24) and is mounted between the bottom case (12) and pivot seat and has two ends. One end of the spring (30) is mounted on the proximal end of the bottom case (22) and the other end of the spring (30) is mounted on the extended tongue (101) of the nail gun body (10).
With reference to FIGS. 4 to 6, when the nail gun in accordance with the present invention is in use, a nail is mounted inside the channel formed by the recesses (213, 223) and is driven to shoot out from the channel by compressed air. When the nail passing, the top case (21) and the bottom case (22) are rotated around the pins (23, 24) to make the muzzle (20) open. With the engagement of the teeth (216, 226) on the cases (21,22), the rotating angle of the cases (21, 22) will be the same and the nail will be applied with a balance force when passing the channel. Therefore, the nail will pass along a straight path.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
