BRIEF DESCRIPTION OF THE DRAWINGS
The drawings disclose illustrative embodiments of the present invention which serve to exemplify the various advantages and objects hereof, and are as follows:
FIG. 1 is a perspective view of the present invention; and
FIG. 2 to FIG. 7 are the perspective views of the present invention from a first to a seventh embodiment respectively.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1 and FIG. 1A, the anti-harmful impact input device of the present invention has one or more than one housing space 11 formed in its main body 1. Each housing space 11 accommodates one or more than one gravity buffer 2 made of weights, lead beads, or other massive substance. An elastic buffer 3 formed of a pair of springs 31 is intercalated between the gravity buffer 2 and the inner wall of the housing space 11. The springs 31 can be, for example, a spring of compression, extension, helical, stack, plate, ring, coiled or disk type. Each of the two elements of the springs 31 is connected to one of the two ends of the gravity buffer 2 with its one terminal, while the other terminal thereof is mated to the opposing inner wall surface of the housing space 11 so as to suspend the gravity buffer 2 in the housing space 11 with the tensile force of the couple spring 31.
When the user moves the input device, the gravity buffer 2 suspended in the housing space 11 by the springs 31 will not keep pace with the movement of the main body 1, but is lagging behind the main body 1 by the retarding effect, and part of energy produced by the inertia force of the moving main body 1 is absorbed by the retarding gravity buffer 2 via the springs 31. The retarding gravity buffer 2 will arrive at the destination shortly after the arrival of the main body 1, and the energy of the inertia force produced by the moving gravity buffer 2 is absorbed by the springs 31. In this manner the brake force required to stop motion of the input device is reduced and the impact to the user's wrist is alleviated.
Referring to FIG. 2, the gravity buffer 2 is formed of weights, lead beads, or other massive substance accommodated in a housing 21 so as to allow its weight adjustable. Alternatively, as shown in FIG. 3, the housing space 11 can be formed into a slot 12 under the upper surface of the main body 1 with a lid 13.
As shown in FIG. 1 through FIG. 4, one or more than one set of springs 31 may be provided to suspend the gravity buffer 2, and the longitudinal axial directions of the coupled springs 31 are in parallel, perpendicular to each other, or even intersected with an arbitrary angle to each other (see FIGS. 5 and 6) so as to allow the main body 1 of the input device to move freely in any desired direction. Besides, the elastic buffer 3 can be, for example, an elastomer formed of rubber, cotton, foam cotton, or a thermoplastic elastomer of polyamide resin, copolymerized polyamide, phenylethylene, or olefin hydrocarbons (see FIG. 7).
Although the description above contains many examples, these should not be construed as limiting the scope of the invention but as merely providing illustration of some of the presently preferred embodiments of this invention. Thus the scope of the invention should be determined by the appended clams and their legal equivalents, rather than by the examples given.
Patent Application
20070273640
