Description of the Prior Art Typically, the computer mouse is used on a computer desk or an ordinary office desk to operate the computer and is grasped with the thumb and pinky finger so that the buttons of the mouse are operated by the index and middle finger. In this position, it is general that the wrist is in contact with the top of the desk almost all and the forearm is in a lifted position from the top of the desk at regular intervals. In particular, architects, designers, and others who make extensive use of the mouse, rather than the keyboard, for considerable lengths of time may develop occupation-related medical conditions such as accumulated fatigue around those areas and pains on the shoulder and neck area.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the conventional above-mentioned problems and to provide an arm supporting apparatus for users of a computer mouse capable of comforting the user's arm and thus increasing productivity of the user by attaching it to an edge of a computer desk or an ordinary desk for the user to rest the arm while using the computer mouse, thereby relieving stress on the arm, shoulders and the neck.

In accordance with the present invention, this object is accomplished by providing an arm supporting apparatus for users of a computer mouse comprising: a clamp assembly including a fixing frame in which a top plate and a bottom plate are placed against each other and protruded in parallel on one side and in which fixed plates having a first pivot hole are protruded on the other side, and a fastening device installed through the bottom plate to adhere the fixed frame to the desk; a link assembly including a first extended frame and a second extended frame, one side of said first extended frame is protruded by coupling plates having a first pivot hole to pivotally engage with the first pivot hole of the fixed plate through a first pivot pin in the horizontal direction, the other side of the first

extended frame is protruded by a second pivot hole from above, one side of the second extended frame is protruded by a second pivot pin from below to pivotally engage with the second pivot hole of the first extended frame in the horizontal direction, and the other side of the second extended frame is protruded by a third pivot hole from above; and an arm support a cushion for supporting a forearm and a cushion frame for supporting a bottom of the cushion, the cushion frame having a third pivot pin protruded below from the bottom of the cushion so as to be engaged with the third pivot hole of the second extended frame.

BRIEF DESCRIPTION OF THE DRAWINGS Other objects and aspects of the invention will become apparent from the following description of embodiments with reference to the accompanying drawings in which: FIG. 1 is a perspective view illustrating arm supporting apparatus for users of a computer mouse according to the present invention; FIG. 2 is a exploded perspective view illustrating arm supporting apparatus for users of a computer mouse according to the present invention; FIG. 3 is a sectional view along Z-Z direction of

the arm supporting apparatus of FIG. 1; FIG. 4 is a installed state view illustrating arm supporting apparatus for users of a computer mouse according to the present invention; FIG. 5 is a state view illustrating arm supporting apparatus for users of a computer mouse according to the present invention in use; and FIG. 6 is a folded state view illustrating arm supporting apparatus for users of a computer mouse according to the present invention after use.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The objects, characteristics and advantages of the above-described invention will be more clearly understood through the preferable embodiments referring to the attached drawings.

Since the terms mentioned later are judged based upon the function of the present invention and they can be changed according to the technician's intention or a usual practice, the terms should be judged considering the overall contents of the specification of the present invention.

FIG. 1,2 and 3 are respectively a perspective view, a exploded perspective view and a sectional view illustrating an arm supporting apparatus 100 for users of

a computer mouse according to the present invention.

Here, the arm supporting apparatus 100 includes a clamp assembly B having a fixing frame 3, a link assembly C having a first extended frame 5 and a second extended frame 6, and an arm support D for receiving the user's forearm.

One side of the fixing frame 3 in the clamp assembly B includes a top plate 3a and a bottom plate 3b which are placed against each other and protruded in parallel.

These plates 3a and 3b are respectively placed a top side and a bottom side of a desk. The other side of the fixing frame 3 includes two fixed plates 15 having a first pivot hole 16a so as to be coupled with one end of the first extended frame 5 of the link assembly C. The two fixed plates 15 are separated from each other by a predetermined distance, and protruded in parallel above and below. The center of the bottom plate 3b is penetrated above and below by a spiral hole 19 fastened with a screw 20. A top end and a bottom end of the screw 20 include respectively a pressing plate 4 and an adjusting handle 21. The pressing plate 4 is attached rotatably to the top end of the screw 20 and contacted with the bottom side of the desk, the adjusting handle 21 is a circular plate and is attached to the bottom end of the screw 20. A fastening device A is defined by the pressing plate 4, the screw 20, the adjusting handle 21,

etc. The adjusting handle 21 of the fastening device A is rotated by the user's hand when fixing the clamping assembly B to the desk so that the pressing plate 4 is ascended and descended by rotations of the screw 4 inserted into the spiral hole 19. Further, the top of the pressing plate 4 includes a rubber pad 25 for adhering to the bottom side of the desk. The rubber pad 25 may allow to stably maintain the fixed state and prevent a scar or a damage to the desk by preventing a slippage of the adjusting handle 21 at the bottom side of the desk when the clamp assemble B is installed at an edge of the desk.

One end of the first extended frame 5 in the link assembly includes coupling plates 14 protruded in correspondence with the fixed plates 15 to couple with them of the fixing frame 3. Meanwhile, the other end of the first extended frame 5 includes a second pivot hole 12 penetrated from the top to couple with the second extended frame 6. The center of the coupling plates 14 is penetrated by first pivot holes 18 to pivotally engage with the first pivot hole 16a of the fixed plate 15 through a first pivot pin 16 in the horizontal direction.

A washer 23 and a cap 24 is needed for smooth coupling.

The washer 23 is inserted between the first pivot holes 18 of the coupling plates 14 so as to prevent disengagement of the first pivot pin 16 in engaging, the

cap 24 is installed on the bottom of the first pivot pin 16. Further, one end of the second extended frame 6 includes a second pivot pin 7 protruded below to pivotally engage with the second pivot hole 12 formed in the first extended frame 5 in the horizontal direction.

On the other hand, the other end of the second extended frame 6 includes a third pivot hole 13 penetrated above and below to couple with a cushion 1 of the arm support D. The first and second extended frame 5 and 6 define respectively an elongated spaces 17 to reduce the weight and the bulk of the frames.

The cushion 1 of the arm support D is defined with a middle portion sunken in the direction of length to accommodate the forearm, and is accumulated by a multitude of cushion members made from various materials.

The bottom of the cushion 1 is attached by a cushion supporting frame 2. The center of the bottom of the cushion supporting frame 2 includes a first pivot pin 8 protruded below to pivotally engage with the third pivot hole 13 formed in the second extended frame 6 in the horizontal direction. Additionally, a bearing 22 is inserted within the second and third pivot holes 12 and 13 so that the second and third pivot pins 7 and 8 are engaged rotatably.

Thus, the first pivot hole 16a and 18 formed in the fixed plate 15 and the coupling plates 14 and the first

pivot pin 16 inserted into the first extended frame 5 constitute a first rotating part 9, the second pivot hole 12 in the first extended frame 5 and the second pivot pin 7 on the second extended frame 6 constitute a second rotating part 10, and the third pivot hole 13 formed in the second extended frame 6 and the third pivot pin 8 on the cushion supporting frame 2 constitute a third rotating part 11.

The arm supporting apparatus 100 for users of a computer mouse according to the present invention constituted as mentioned above may be attached to an edge of the desk using the clamp assembly B. Such procedures for attaching the clamp assembly B to the desk are as follows. First, the user rotates the adjusting handle 21 in any direction so that the interval between the pressing plate 4 and the top plate 3a of the fixed frame 3 is wider than the thickness of the desk 40. Under the condition, the user inserts the fixed frame 3 into the end of the desk using the interval between the pressing plate 4 and the top plate 3a, and then ascends the pressing plate 4 by rotating the adjusting handle 21 inversely so that the pressing plate 4 and the top plate 3a are attached to the desk. Thus, the arm supporting apparatus 100 is installed on the desk as shown in FIG.

4.

Under the installed condition, the user uses the

mouse 30 by placing the user's forearm of using the mouse 30 on the cushion 1 of the arm support D, as shown in FIG. 5. Additionally, the user is able to freely move his or her forearm forward, backward, left and right and also rotates the forearm by the first rotating part 9, the second rotating part 10 and the third rotating part 11, in the case of utilizing the mouse 30 in placing the forearm on the cushion 1.

Meanwhile, in cases where the user does not want to use the mouse 30 or the arm supporting apparatus 100, the space occupied by the apparatus 100 is minimized by placing the first extended frame 5 to the maximum outside of the desk using the first rotating part 9, placing the second extended frame 6 to the upper of the first extended frame 5 to be overlapped at the same position using the second rotating part 10, and placing the cushion frame 2 and the cushion 1 to the second extended frame 6 at the same position using the third rotating part 11, so that the user may conveniently perform a separate work on the desk, as shown in FIG. 6.

As described above, the arm supporting apparatus 100 for users of the computer mouse according to the present invention may increase the user's convenience and reduce fatigue accumulated around the shoulder or the arm to improve productivity of the user by including a multitude of rotating parts comprising the clamp assembly, the link

assembly and the arm support, being installed at any end of the desk regardless of its thickness, and operating the mouse after placing the user's forearm to the cushion.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.