BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a roller skate frame, more particularly to a roller skate frame with plate being folded by press molding at one time forming different height of front and rear parts of the plate.
2. Description of the Related Art
FIGS. 1 and 1-1, illustrate a conventional roller skate frame (1) of roller skate. A pair of wheel-mounting plates (11) are folded vertically with right angle, wherein the front and the rear connecting sections forms a front connecting face (12) and a rear shoe mounting plate (13). However, the aforesaid conventional roller skate frame is disadvantageous in that the front and the rear connecting face (12, 13) are in the same height which does not match the human engineering design.
FIGS. 2, 2-1 and 3 illustrate another conventional roller skate frame (2), wherein a pair of wheel-mounting plates (21) is bending inward forming a front connecting face (23). The gap between the wheel-mounting plates (21) of the end section is placed with a fastening plate (22) to engage with the roller skate frame (2) by adapting nuts and rivets to form a rear connecting face (24). However, the aforesaid conventional roller skate frame has the disadvantages as follows. Firstly, two wheel-mounting plates (21) of the roller skate frame (2) have to be mounted to each other with the fastening plate (22) for presenting lower front connecting face (23) and higher rear connecting face (24) which would need extra material, cost more money and consume more time on the assembling process. Secondly, the fastening plate (22) makes more material in need of being cut off for forming the roller skate frame (2) which would cause more wastes.
SUMMARY OF THE INVENTION
The present invention relates to a roller skate frame which is capable of overcoming the disadvantages of the prior arts.
According to the present invention, there is provided a roller skate frame that comprises: two wheel-mounting plates corresponding to each other having upper and lower bridging plates extending inwardly from the front end of the wheel-mounting plates and each of which defines a fastener hole on it. Two bending lines respectively locating on the adjunction between the bridging plates and the front part of the roller skate frames are parallel to the bending lines respectively provided on the rear connecting face of the wheel-mounting plates. The overlap between the upper and lower bridging plates allows the width of the front connecting face being the same as the rear shoe-mounting plate and forms the lower front and higher rear connecting face with different height.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded view of a roller skate frame of a preferred embodiment of the prior art.
FIG. 1-1 is a side view of the roller skate frame according to the preferred embodiment of the prior art.
FIG. 2 is an exploded view of a roller skate frame according to the preferred embodiment of the second prior art.
FIG. 2-1 is a side view of side view of the roller skate frame according to the preferred embodiment of the second prior art.
FIG. 3 is a perspective view of the roller skate frame according to the preferred embodiment of the second prior art.
FIG. 4 is an exploded view of the roller skate frame according to the preferred embodiment of the present invention.
FIG. 5 is a side view illustrating the bended roller skate frame according to the preferred embodiment of the present invention.
FIG. 6 is a perspective top view of the bended roller skate frame according to the preferred embodiment of the present invention.
FIG. 6-1 is a perspective bottom view of the bended roller skate frame according to the preferred embodiment of the present invention.
FIG. 7 is a perspective view of the first combination of the bridging plates with the wheel-mounting plates according to the preferred embodiment of the present invention.
FIG. 7-1 is a front view of the first combination of the bridging plates with the wheel-mounting plates according to the preferred embodiment of the present invention.
FIG. 8 is a perspective view of the second combination of the bridging plates with the wheel-mounting plates according to the preferred embodiment of the present invention.
FIG. 8-1 is a front view of the second combination of the bridging plates with the wheel-mounting plates according to the preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
FIGS. 4 to 8-1 illustrate a preferred embodiment of the roller skate frame of the present invention. The plate mainly composed of light and rigid aluminum is formed by press mold at one time forming the body of the roller skate frame (3). The roller skate frame (3) is provided with two corresponding wheel-mounting plates (34) forming a space (38) with suitable distance between front bottom connecting face (36) and shoe-mounting plate (37) thereof. The front bottom connecting face (36) is provided by the corresponding upper and lower bridging plates (32, 31) with being suitably spaced apart, and each of which has a fastener hole (33) on it.
Referring to FIG. 4 and FIGS. 5 to 6-1 which illustrate the wheel-mounting plate (34) being bended, the width of the upper bridging plate (32) is wider than the lower bridging plate (31). When the wheel-mounting plate (34) being bended inwardly with right angle, the upper bridging plate (32) overlaps the lower bridging plate (31) with two fastener holes (33) located corresponding to each other which has a protrusion (35) extending through for fastening. As shown in FIG. 5, comparing to the lower bridging plate (31), the exceeding parts of the upper bridging plate (32) at two ends are allowed to be bended downwardly wrapping over two ends of the lower bridging plate (31). While being bended, the bending lines (44) located between the front inner section of the wheel-mounting plates (34) and upper and lower bridging plates (32, 31) respectively are parallel to the second bending line (45) provided on the rear connecting face (37) of the inner rear section of the wheel-mounting plate (34) without intersection. As shown in FIG. 6, the width (46) provided by suitable space between the overlapping upper and lower bridging plates (32, 31) represents the same width (47) of the shoe-mounting plate (37). As shown in FIG. 5, the height difference (48) is formed between the higher shoe-mounting plate (37) and the lower front bottom connecting face (36).
FIGS. 7 and 8 illustrate the second structure example of the present invention. The lower bridging plate (31) and the higher bridging plate (32) can be transformed into one single bridging plate (41), which allows suitably extending from one single side and the extra parts (41) of the bridging plate (41) can be bended downwardly with 90 degrees to cover outside of the wheel-mounting plate (42) as shown in FIG. 7 or lean against the inside wall of the wheel-mounting plate (42) as shown in FIG. 8, and both of which are fastened with a pin (43) respectively.
With the invention thus explained, it is apparent that the plate can be bended into a roller skate frame (3) with different height between the front and rear parts thereof by the pressing mold in one time without equipping other components. Preferably, no other component is needed for forming the shoe-mounting plate (37) which would be formed naturally after being bended to prevent from the waste of the cost and make the best use of the material.
Patent Application
20090256322
