Abstract:
A wireless cursor control device for use with a computer system includes a main body, a wireless signal receiver, a storing portion and a resilient pad member. The main body generates a wireless signal to control a cursor of the computer system. The wireless signal receiver is swappable to be electrically connected to the computer system for receiving the wireless signal. The storing portion is disposed in the main body for accommodating the wireless signal receiver. The resilient pad member is engaged with the bilateral sides of the storing portion, and deformed to generate a restoring force when the wireless signal receiver is inserted into the storing portion. The resilient pad member is sustained against the wireless signal receiver according to the restoring force.

Description:
FIELD OF THE INVENTION 
   The present invention relates to a wireless cursor control device, and more particularly to a wireless cursor control device for use with a computer system. 
   BACKGROUND OF THE INVENTION 
   Nowadays, mice, keyboards or network cameras become essential peripheral devices of computer systems. As known, when the wired peripheral device is used, the wire linkage is very troublesome and inconvenient because an additional signal wire is employed to connect the computer with the peripheral device. In addition, it is difficult to store the signal wire. In comparison with the wired peripheral technology, the wireless peripheral device is more user-friendly. With increasing development of these peripheral devices, wireless communication technologies have experienced great growth and are rapidly gaining in popularity. 
   Among these wireless peripheral devices, the wireless mouse and the wireless keyboard are popularly served as input devices in the industry. Take a wireless mouse for example. Instead of using the signal wire, when the wireless mouse is operated, a corresponding wireless signal receiver is used for receiving the wireless signal issued from the wireless mouse. The wireless signal receiver is connected to the universal serial bus (USB) port of the host computer. Therefore, the signals generated from the wireless mouse can be transmitted to the host computer via the wireless signal receiver. Although this wireless mouse is convenient because no signal wire is required, this wireless mouse still has several drawbacks. For example, when the wireless mouse is operated, a corresponding wireless signal receiver is necessary. In a case that this wireless mouse is used in other places, the user should carry the corresponding wireless signal receiver at the same time. In other words, if the wireless mouse and the wireless signal receiver are separately stored, the probability of losing either the wireless mouse or the wireless signal receiver is increased. Under this circumstance, the wireless mouse fails to be normally operated. 
   For a purpose of solving such a problem, a storing structure of a wireless signal receiver is disclosed in Taiwanese Patent No. M270432, and the contents of which are hereby incorporated by reference. Referring to  FIG. 1 , the storing structure disclosed in Taiwanese Patent No. M270432 is illustrated. The wireless mouse  1  is stored within a storing portion  11  in the bottom surface thereof. The wireless signal receiver  2  for use with the wireless mouse  1  comprises a handle portion  21  corresponding to an indentation structure  21  in the vicinity of the outlet of the storing portion  11 . The handle portion  21  may facilitate the user to withdraw the wireless signal receiver  2  from the storing portion  11  of the wireless mouse  1 . For storing the wireless signal receiver  2 , the wireless signal receiver  2  is interference fitted into the storing portion  11  of the wireless mouse  1 . In other words, the dimension of the wireless signal receiver  2  considerably conforms to the storing portion  11 . Since the friction forces between the wireless signal receiver  2  and the storing portion  11  are balanced, the wireless signal receiver  2  can be firmly secured within the storing portion  11  of the wireless mouse  1  so as to effectively store the wireless signal receiver  2 . Unfortunately, if the process of removing/inserting the wireless signal receiver  2  from/into the storing portion  11  of the wireless mouse  1  is repeatedly done for a long term, the wireless signal receiver  2  may no longer be interference fitted into the storing portion  11  of the wireless mouse  1 . As a consequence, the wireless signal receiver  2  is likely to loosen or fall off because the wireless signal receiver  2  is not firmly secured within the storing portion  11  of the wireless mouse  1 . Under this circumstance, the storing device of the wireless mouse is troublesome and not user-friendly. 
   In views of the above-described disadvantages resulted from the prior art, the applicant keeps on carving unflaggingly to develop a wireless cursor control device according to the present invention through wholehearted experience and research. 
   SUMMARY OF THE INVENTION 
   It is an object of the present invention to provide a wireless cursor control device for use with a computer system. 
   In accordance with an aspect of the present invention, the wireless cursor control device includes a main body, a wireless signal receiver, a storing portion and a resilient pad member. The main body generates a wireless signal to control a cursor of the computer system. The wireless signal receiver is swappable to be electrically connected to the computer system for receiving the wireless signal. The storing portion is disposed in the main body for accommodating the wireless signal receiver. The resilient pad member is engaged with the bilateral sides of the storing portion, and deformed to generate a restoring force when the wireless signal receiver is inserted into the storing portion. The resilient pad member is sustained against the wireless signal receiver according to the restoring force. 
   In an embodiment, the main body is a main body of a wireless mouse, and the computer system is selected from one of a personal computer and a notebook computer. 
   In an embodiment, the storing portion comprises a first indentation structure and a second indentation structure in the bilateral side thereof to be engaged with the resilient pad member. 
   In an embodiment, the resilient pad member includes a first resilient semi-cylindrical pad and a second resilient semi-cylindrical pad to be sustained against the wireless signal receiver when the wireless signal receiver is stored within the storing portion. 
   In an embodiment, the first resilient semi-cylindrical pad and the second resilient semi-cylindrical pad are respectively embedded within the first indentation structure and the second indentation structure, and have a first trench structure and a second trench structure engaged with bilateral edges of a bottom plate of the storing portion. 
   In an embodiment, the wireless signal receiver further comprises a first notch and a second notch to be engaged with the first resilient semi-cylindrical pad and the second resilient semi-cylindrical pad of the resilient pad member. 
   In an embodiment, the storing portion further comprises a third indentation structure for accommodating a universal serial bus connector of the wireless signal receiver therein, thereby facilitating positioning the wireless signal receiver within the storing portion. 
   In an embodiment, the wireless cursor control device further comprises a power switch unit in communication with the third indentation structure of the storing portion, wherein the wireless cursor control device is powered off when the wireless signal receiver is stored within the storing portion and the universal serial bus connector of the wireless signal receiver touches the power switch unit. 
   In an embodiment, the wireless signal receiver is stored within the storing portion by a depressing approach and the first resilient semi-cylindrical pad, and the second resilient semi-cylindrical pad of the resilient pad member are sustained against the wireless signal receiver after the resilient pad member is engaged within the storing portion. 
   In an embodiment, the length of the storing portion is slightly greater than that of the wireless signal receiver, and the storing portion has an inclined plane for facilitating the wireless signal receiver to be stored within the storing portion in a slidable manner, so that the first resilient semi-cylindrical pad and the second resilient semi-cylindrical pad of the resilient pad member are sustained against the wireless signal receiver. 
   The above objects and advantages of the present invention will become more readily apparent to those ordinarily skilled in the art after reviewing the following detailed description and accompanying drawings, in which: 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a schematic view of a wireless mouse having a storing structure according to prior art; 
       FIG. 2(   a ) is an exploded view of a wireless cursor control device according to a first preferred embodiment of the present invention; 
       FIG. 2(   b ) is a schematic view illustrating that the resilient pad member is coupled with the storing portion according to the first preferred embodiment of the present invention; 
       FIG. 2(   c ) is a schematic view of the resilient pad member used in the present invention; 
       FIG. 2(   d ) is a schematic view illustrating that the wireless signal receiver is completely accommodated within the storing portion according to the first preferred embodiment of the present invention; 
       FIG. 3(   a ) is an exploded view of a wireless cursor control device according to a second preferred embodiment of the present invention; 
       FIG. 3(   b ) is a schematic view illustrating that the wireless signal receiver is completely accommodated within the storing portion according to the second preferred embodiment of the present invention; 
       FIG. 3(   c ) is a schematic cross-sectional view illustrating the location of the power switch unit in the wireless mouse; and 
       FIGS. 4(   a ) and  4 ( b ) are schematic views illustrating two approaches of inserting the wireless signal receiver into the storing portion. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   Referring to  FIG. 2(   a ), an exploded view of a wireless cursor control device according to a first preferred embodiment of the present invention is illustrated. In this embodiment, the wireless cursor control device is a wireless mouse  3  applicable to a personal computer or a notebook computer. The wireless mouse  3  shown in  FIG. 2(   a ) comprises a main body  30 , a wireless signal receiver  31 , a storing portion  32  and a resilient pad member  33 . When the wireless signal receiver  31  is plugged or swapped in a USB port (not shown) of a host computer, the signals generated from the main body  31  can be transmitted to the host computer via the wireless signal receiver  31 . According to some major features of the present invention, the storing portion  32  and the resilient pad member  33  are used for storing the wireless signal receiver  31  and facilitating fixing the wireless signal receiver  31 , respectively. The operation principle of the present invention will be illustrated as follows in more details. 
   Please refer to  FIG. 2(   b ), which is a schematic view illustrating that the resilient pad member  33  is coupled with the storing portion  32 . An enlarged view of the resilient pad member  33  is illustrated in  FIG. 2(   c ). The dimension of the wireless signal receiver  31  conforms to the storing portion  32 . As also shown in  FIGS. 2(   a ) and  2 ( b ), the storing portion  32  further comprises a first indentation structure  321  and a second indentation structure  322  in the sidewalls thereof. In this embodiment, the resilient pad member  33  includes a first resilient semi-cylindrical pad  331  and a second resilient semi-cylindrical pad  332 . The first resilient semi-cylindrical pad  331  and the second resilient semi-cylindrical pad  332  are embedded into the first indentation structure  321  and the second indentation structure  322 , respectively. Furthermore, the first resilient semi-cylindrical pad  331  and the second resilient semi-cylindrical pad  332  have a first trench structure  3311  and a second trench structure  3312  engaged with bilateral edges of the bottom plate  320  of the storing portion  32 , respectively. The resilient pad member  33  is deformed and compressed in response to an external force, and returns to its original shape due to a restoring force generated from the compressed resilient pad member  33 . Moreover, due to the restoring force generated from the compressed resilient pad member  33 , the resilient pad member  33  is firmly secured to the storing portion  32  when the first resilient semi-cylindrical pad  331  and the second resilient semi-cylindrical pad  332  of the resilient pad member  33  are engaged with the first indentation structure  321  and the second indentation structure  322 , respectively. 
   After the resilient pad member  33  is secured to the storing portion  32 , the wireless signal receiver  31  can be accommodated within the storing portion  32 , as is shown in  FIG. 2(   d ). During the wireless signal receiver  31  is inserted into the storing portion  32 , the wireless signal receiver  31  will be sustained against the first resilient semi-cylindrical pad  331  and the second resilient semi-cylindrical pad  332  of the resilient pad member  33 . Since the wireless signal receiver  31  is supported by the first resilient semi-cylindrical pad  331  and the second resilient semi-cylindrical pad  332  of the resilient pad member  33 , the wireless signal receiver  31  is securely positioned within the storing portion  32  without loosening or falling off. 
   In accordance with the major feature of the present invention, the first resilient semi-cylindrical pad  331  and the second resilient semi-cylindrical pad  332  of the resilient pad member  33  are sustained against the wireless signal receiver  31  after the resilient pad member  33  is secured to the storing portion  32 . Optionally, the bilateral sides of the wireless signal receiver  31  may include a first notch  311  and a second notch  312  to be engaged with the first resilient semi-cylindrical pad  331  and the second resilient semi-cylindrical pad  332  of the resilient pad member  33 , thereby facilitating securely positioning the wireless signal receiver  31  within the storing portion  32 . 
   A further embodiment of a wireless mouse is illustrated in  FIG. 3(   a ). In this embodiment, the wireless mouse  4  as shown in  FIG. 3(   a ) comprises a main body  40 , a wireless signal receiver  41 , a storing portion  42  and a resilient pad member  43 . The storing portion  42  comprises a first indentation structure  421  and a second indentation structure  422  in the sidewalls thereof. In addition, the storing portion  42  comprises a third indentation structure  423  at the topside thereof. Likewise, the resilient pad member  43  includes a first resilient semi-cylindrical pad  431  and a second resilient semi-cylindrical pad  432  engaged with the first indentation structure  421  and the second indentation structure  422  of the storing portion  42 , respectively. After the resilient pad member  43  is secured to the storing portion  42 , the wireless signal receiver  41  can be accommodated within the storing portion  42 , as is shown in  FIG. 3(   b ). Likewise, during the wireless signal receiver  41  is inserted into the storing portion  42 , the wireless signal receiver  41  will be sustained against the first resilient semi-cylindrical pad  431  and the second resilient semi-cylindrical pad  432  of the resilient pad member  43 . In addition, since the USB connector  410  at the front end of the wireless signal receiver  41  is embedded into the third indentation structure  423  of the storing portion  42 , the wireless signal receiver  41  will be securely positioned within the storing portion  42 . Moreover, as shown in  FIG. 3(   c ), the wireless mouse  4  further comprises a power switch unit  44 , which is arranged inside the main body  40  and in communication with the third indentation structure  423  of the storing portion  42 . During the process of inserting the wireless signal receiver  41  into the storing portion  42 , the USB connector  410  of the wireless signal receiver  41  is penetrated through the third indentation structure  423  and then touches the power switch unit  44 . Once the USB connector  410  of the wireless signal receiver  41  touches the power switch unit  44 , the wireless mouse  4  is automatically powered off. Under this circumstance, no power consumption of the wireless mouse  4  is rendered when the wireless signal receiver  41  is stored within the storing portion  42 . By the way, some operation principles are similar to those described in  FIG. 2 , and are not to be redundantly described herein. 
   Referring to  FIGS. 4(   a ) and  4 ( b ), two approaches of inserting the wireless signal receiver  41  into the storing portion  42  are illustrated. In  FIG. 4(   a ), the wireless signal receiver  41  is inserted into the storing portion  42  by depressing the wireless signal receiver  41 . On the other hand, as shown in  FIG. 4(   b ), since the storing portion  42  has an inclined plane  425  and the length of the storing portion  42  is slightly greater than that of the wireless signal receiver  41 , the wireless signal receiver  41  may be slid into the storing portion  42  through the inclined plane  425 . Therefore, the wireless signal receiver  41  will be easily stored within the storing portion  42  by the depressing or sliding approach. By the way, a remaining space resulted when the wireless signal receiver  41  is stored within the storing portion  42  facilitates a user to withdraw the wireless signal receiver  41  from the storing portion  42 . 
   From the above description, the storing portion and the resilient pad member of the wireless mouse cooperatively facilitate storing and fixing the wireless signal receiver within the storing portion. The resilient pad member is deformed in response to an external force and returns to its original shape due to a restoring force generated from the compressed resilient pad member. Therefore, even if the process of removing/inserting the wireless signal receiver from/into the storing portion is repeatedly done for a long term, the resilient pad member is still useful. The use of the resilient pad member is effective to overcome the prior art drawback of allowing the wireless signal receiver to be interference fitted into the storing portion, so that the wireless signal receiver is securely positioned within the storing portion without loosening or falling off. 
   The present invention is illustrated by referring to a wireless mouse. Nevertheless, the present invention can be applied to other computer&#39;s wireless peripheral device having the main body and the wireless signal receiver similar to the wireless mouse of the present invention, for example, a wireless keyboard or a wireless joystick. 
   While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.