Patent Application
20060118594
1. Field of the Invention
This invention relates to a nail gun for driving nails into an object, more particularly to an improvement relating to a nail magazine for receiving a nail stick.
2. Description of the Related Art
Referring to
However, since the magazine cover 12 is confined by the upstanding walls 113, a much high accuracy is needed for the dimensions and positions of the projections 122 and the engaging grooves 114 in order to enable the projections 122 to slide properly in the respective engaging grooves 114. If the projections 122 are too tight in the engaging grooves 14, the sliding movement of the magazine cover 12 will be hindered. If the projections are too loose in the engaging grooves 14, the magazine cover 12 can slip from the magazine base 11. On the other hand, the need to provide high accuracy for the construction of the magazine increases the cost and time for manufacturing the nail gun.
An object of the present invention is to provide a nailing gun with an improved nail magazine having a magazine base and a magazine cover that can interlock firmly and easily without the need for high dimensional and positional accuracy.
According to this invention, a nailing gun comprises a handle body, a barrel connected to one end of the handle body, a nail shooting nose connected to the barrel, a connecting unit connected to the other end of the handle body, and a nail magazine connected between the connecting unit and the nail shooting nose. The nail magazine includes a magazine base which includes a longitudinal base panel, and first and second flanges projecting from and extending longitudinally at two opposite longitudinal ends of the base panel, the first flange having an inner face formed with a longitudinal engaging groove. The nail magazine further comprises a magazine cover which includes a longitudinal cover panel, a third flange projecting from the cover panel adjacent the first flange and having a protrusion engaging slidably the engaging groove, a fourth flange projecting from the cover panel adjacent the second flange, a limit member connected to the fourth flange, and a clamping groove defined by the fourth flange and the limit member. The fourth flange and the limit member clamp the second flange in the clamping groove.
Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiment of the invention, with reference to the accompanying drawings, in which:
Referring to FIGS. 2 to 5, a nailing gun embodying the present invention includes a handle body 2 connected to a barrel 21 and an air hose 22. A nail magazine (A) has a rear end connected to the handle body 2 through a connecting unit 4, and a front end connected to a nail shooting nose 3.
The connecting unit 4 has opposite first and second connecting plates 41 and 42 which have ends 411, 421 connected to the handle body 2 and ends 412 and 422 connected to the nail magazine (A) as shown in
The nail magazine (A) includes a magazine base 5 and a magazine cover 6. The magazine cover 6 is connected to the first connecting plate 41, whereas the magazine base 5 is attached securely to the second connecting plate 42. The magazine base 5 has a base panel 52 which defines a nail channel 51, and first and second flanges 53 and 54 projecting from and extending longitudinally at two opposite longitudinal ends of the base panel 52. The first flange 53 has an inner face 531 formed with a longitudinal engaging groove 532. The second flange 54 has an inner face 541 and an outer face 542 opposite to the inner face 541.
The magazine cover 6 is coupled slidably to the magazine base 5 to close the nail channel 51 and includes a cover panel 61. The cover panel 61 has a longitudinal third flange 611 extending adjacent the first flange 53 of the base panel 52 and a protrusion 62 engaging slidably the engaging groove 532. The cover panel 61 further includes a longitudinal fourth flange 612 projecting from the cover panel 61 adjacent to the second flange 54, and a limit member 63 connected to the fourth flange 612.
The fourth flange 612 has a longitudinal terminating end 613. The limit member 63 projects outwardly from an outer face of the fourth flange 612 and confines with the fourth flange 612 a clamping groove 634 to receive the second flange 54. Preferably, the limit member 63 has a substantially L-shaped cross section and includes a first portion 632 which projects from the outer face of the fourth flange 612 and extends substantially along an extending direction of the terminating end 613 to a distance farther than the terminating end 613, and a second portion 633 bent inwardly from the first portion 632 at said farther distance and spaced apart from the terminating end 613. The clamping groove 634 is confined by the first and second portions 632 and 633 and the terminating end 613. The cover panel 61 further has a longitudinal shoulder 64 that extends in the outer face of the fourth flange 612 opposite to the terminating end 613. The first connecting plate 41 has its end 412 engaged slidably with the shoulder 64.
Referring once again to
Due to the provision of the limit member 63 and the shoulder 64, the magazine cover 6 can be slid over the magazine base 5 without slipping from the magazine base 5. In addition, since the limit member 63 extends only at the front end of the magazine cover 6 and has a measure of resiliency, the clamping groove 634 does not need high positional and dimensional accuracy but still can permit the second flange 54 to be easily inserted therein. As such, the nail magazine (A) according to the present invention can be produced with less accuracy in a less-complicated manner and hence the manufacturing cost thereof can be reduced.
While the present invention has been described in connection with what is considered the most practical and preferred embodiments it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretations and equivalent arrangements.
