Patent Application
20070090146
1. Field of the Invention
The present invention relates to a magazine for a nail gun, and more particularly to a coil-type magazine, which can continuously feed nails into a nail gun and is easy to reload.
2. Description of the Related Art
A nail gun is a tool that is widely used in carpentry and construction. A nail gun allows a user to drive nails into surfaces with ease. The nail gun also allows the user to do it continuously as long as there is a steady supply of nails. Most nail guns use linked nails fed from magazines. The magazines can be a box-type, in which strips of nails are loaded in a straight track, which is usually an integral part of the nail gun; or a coil-type, in which belts of linked nails are coiled inside a drum-like container. As coil-type magazines can hold a much greater quantity of nails than box-type magazines and require less frequent reloading, the coil-type magazine is favored over the box-type magazine for applications that require a large amount of nailing work.
However, coil-type magazines are usually mounted in front of a trigger of a nail gun such that the space between the coil-type magazine and the trigger is narrow and makes reloading the magazine difficult and inconvenient. Increasing the space would only make the nail gun cumbersome and difficult to handle.
Therefore, the invention provides an improved coil-type magazine for a nail gun to mitigate or obviate the aforementioned problem.
The main objective of the present invention is to provide a coil-type magazine for a nail gun, which is not limited by the space between the magazine and a trigger of a nail gun and is easy to reload.
Other objectives, 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
The drum-like housing (20) comprises a body (21) with two ends and a cover (22) corresponding to the body (21). The cover (22) is pivotally mounted at one end of the body (21) by a fastener (23). The body (21) has a substantially circular wall (211) formed at a side of the body (21) between the two ends. A seat (24) is formed along an upper edge of the wall (211) adjacent to the inner surface of the wall (211) of the body (21) to receive the cover (22). A longitudinal channel (25) is defined in the inner surface of the wall (211) from the seat (24). Two parallel slots (241) are defined respectively on opposite sides of the channel (25). A hole is defined through the wall (211) and the channel (25). The cover (22) has a wall formed at a side and is symmetrical to the wall (211) of the body. The cover (22) has a resilient element formed in the wall. The cover (22) also has a locating slot (221) defined in a distal end. A first mounting hole (26) is defined in an end of the body (21) opposite the pivot end and a second mounting hole (27) is defined in the body (21) at the pivot end.
The driving member (30) is mounted inside the housing (20) and comprises two springs (31), a plate (32) and a hollow rod (33). The plate (32) is substantially rectangular in shape and has two guide edges (321) formed on opposite sides thereof that correspond to the slots (241). A raised U-shaped track (322) is transversely formed in a lower end of plate (32) and a cutout (323) is defined within the track (322). The hollow rod (33) has a head (331) and a flange (332). The head (331) is integrally formed at an end of the rod (33) and is mounted in the track (322). The head (331) has diameter that is slightly larger than that of the rod (33). The flange (332) is formed on the rod (33) adjacent to the head (331) and has an outer diameter that is slightly larger than that of the head (331). A neck (333) is formed between the head (331) and the flange (332). The neck (333) has flats formed thereon such that when the neck (333) is mounted in the cutout (323) in the plate (32), the rod (33) will not rotate. A resilient element (34) is received into the rod (33) and has two hooks (341) formed at two ends thereof. A first cap (35) has a first attachment point (351) defined in a center of an inner surface. A second cap (36) has a second attachment point (361) defined in a center of an inner surface. The two hooks (341) of the resilient element (34) are attached to the two attachment points (351)(361), respectively.
The spool (40) is comprised of a disk (41) and a hollow tube (42) mounted on an end of the disk (41). The spool (40) is rotatably mounted on the rod (33). The diameter of the disk (41) is slightly smaller than that of the body (21) such that the disk (41) can freely rotate within the housing (20) when the cover (22) is closed over the body (21).
With reference to
With reference to
With reference to
When the cover (22) is opened, the resilient force of the springs (31) pushes the plate (32) and the spool (40) substantially out of the housing (20). With the spool (40) substantially out of the housing (20), a belt of linked nails can be easily wound around the spool (40) to reload the magazine. The present invention is not limited by the space between the housing (20) and the handle (51) of a nail gun (50), and makes reloading easier and more convenient.
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. Changes may be made in the details, 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.
