Abstract:
A switching and retaining device applied to cellular phones and their peripheral communication equipment is provided. More particularly, it relates to a switching and retaining device that is coupled to a cellular phone and its peripheral equipment and can carry out telecommunication automatically between the cellular phone and its peripheral equipment. It is made up of a base mount with a retaining mount secured thereto and having a holding arm controlled to slidably extend and retract by way of a control unit. There is an input terminal, an output terminal and a power terminal that are placed on the base mount and are coupled to the peripheral equipment of a cellular phone and a power source by conduction wires. On the retaining mount is disposed a receiving cavity for accommodation of a cellular phone.

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to a switching and retaining device applied to cellular phones and their peripheral communication equipment and more particularly relates to a switching and retaining device that is coupled to a cellular phone and its peripheral equipment and can carry out telecommunication automatically between the cellular phone and its peripheral equipment. The present invention is basically made up of a base mount with a retaining mount secured thereto. The retaining mount is equipped with a holding arm that is controlled to slidably extend and retract by way of a control unit. Inside the base mount is disposed a circuit set; and an input terminal, an output terminal and a power terminal are placed on the base mount and are coupled to the peripheral equipment of a cellular phone and a power source by conduction wires. On the retaining mount is disposed a receiving cavity for accommodation of a cellular phone with a signal plug and power socket positioned thereon for connection to the cellular phone and its peripheral equipment. Those plug and socket are connected to the circuit set of the base mount. A control button is disposed on the retaining mount to control the extension and retraction of the holding arm. Thereby, a cellular phone can be readily housed in the receiving cavity of the retaining mount and incoming calls of the cellular phone can be switched automatically to its peripheral equipment, protecting people from long time exposure to electromagnetic wave of a cellular phone when a person is inside a room. 
     Cellular phone has become an indispensable communication tool to most people living in modern cities. However, electromagnetic waves generated by cellular phones have bad effect on people&#39;s health. It makes users of cellular phones worried when they enjoy the facilities of cellular phones every moment. People are used to keeping their cellular phones in a stand-by mode even when they are at home or in office or in a vehicle so that they will not miss any important phone calls. In that case, people are reluctantly forced to use cellular phones in a long period of time everyday. It may be detrimental to people&#39;s health. 
     To solve such a problem, the present inventor comes up with a switching and retaining device for cellular phones and their peripheral communication equipment. Such a switching and retaining device can carry out telecommunication automatically between the cellular phone and its peripheral equipment when incoming calls of a cellular phone positioned in a receiving cavity of the mount are transmitted to the cellular phone. Thereby people can be better protected from close exposure to electromagnetic waves of cellular phones constantly. 
     SUMMARY OF THE INVENTION 
     Therefore, the primary object of the present invention is to provide a switching and retaining device which is mainly used to hold a cellular phone in place and automatically switches incoming calls to the peripheral equipment of the cellular phone when a user of the cellular phone stays inside a room or in a vehicle. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective diagram showing the exploded components of the present invention; 
     FIG. 2 is a perspective diagram showing the assembly of the switching and retaining mount of the present invention; 
     FIG. 3 is a diagram showing the placement of a cellular phone on the mount in practical application; 
     FIG. 4 is a diagram showing the systematic connection of the present invention; 
     FIG. 5 is a diagram showing the operation mode of the present invention; 
     FIG. 5A is sectional diagram showing the operation mode of the button in FIG. 5; 
     FIG. 6 is a diagram showing another operation mode thereof; 
     FIG. 6A is a diagram showing another operation mode of the button in FIG. 6; 
     FIG. 7 is a perspective diagram showing the separated parts of a second embodiment; 
     FIG. 8 is a diagram showing the assembly of the second embodiment; 
     FIG. 9 is a partially sectional diagram showing the detailed structure of the first embodiment of the present invention; 
     FIG. 10 is a diagram showing the present invention coupled to a hand free device; 
     FIG. 11 is a perspective diagram showing the present invention directly served as a hand free device. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to the drawings ranging from FIG. 1 to FIG. 6, the present invention relating to a switching and retaining device for use in a cellular phone and its peripheral equipment is mainly made up of a base mount  10 , a retaining mount  20  disposed above the base mount  10 , a holding arm  35  disposed on the retaining mount and controlled by the control unit  30 . 
     The base mount  10  is provided with a slantly extended receiving cavity  11  for housing an electric circuit which is not shown and described in details because it is a commonly seen circuit with a charging circuitry or a hand-free device circuitry. In the receiving cavity  11  are disposed a plurality of tubular positioning rods  12  so as to permit the base mount  10  to be locked into engagement with the retaining mount  20  in assembly by way of screws  121 . On the base mount  10  are disposed, a power socket C, an input terminal  13 , an output terminal  14  and a power terminal  15  that are coupled to communication devices of a cellular phone&#39;s peripheral equipment, such as wired telephone T 2 , a hand free device and etc., by means of conduction wires L 1 , L 2 , L 3  respectively. 
     The retaining mount  20  has a housing recess  21  for accommodation of a cellular phone T 1 . In the housing recess  21  are disposed a signal plug  22  power socket  23  for connection to a cellular phone, that are electrically connected to the circuit (not shown) positioned in the base mount  10 . At the other half of the retaining mount  20  is defined a platform  24  having an opening  241  at its front lateral side and a through hole  242  at one longitudinal side thereof. A spring receiving room  241  is disposed under the retaining mount  20 , an axle hole  244 , a positioning axle hole  245  and a slide track  246 , as shown in FIG. 5, for accommodation of the parts of the control unit  30 . In correspondence to the tubular positioning rods  12  of the base mount  10  are disposed under the retaining mount  20  a plurality of poles  25  that are engaged with the tubular positioning rods  12  by way of screws  121  for locking purpose. 
     The control unit  30  is made up of a button  31 , a spring  32 , a link bar  33 , a gear set  34 , a holding arm  35  and a bottom cover  36 . 
     The button  31  is placed in the through hole  242  of the retaining mount  20  and has a bias spring  311  engaged therewith; and at one side of the button  31  is also provided with an abutment wing  312 . 
     A spring  32  is housed in a receiving cavity  243  of the retaining mount  20 . The link bar  33  has a bar embodiment  331  for insertion into the axle hole  244  of the retaining mount  20 ; and at one end thereof is equipped with a rod protrusion  332  for engagement of the spring  32 ; and at the opposite end is placed a retaining flange  333 . 
     The gear set  34  engaged with a positioning hole  245  of the retaining mount  20  is made up of an upper gear  341  and a lower gear  342 ; the former is engaged with the retaining flange  333  of the link bar  33 , and the latter is in operational engagement with a rack teeth  353  of the holding arm  35 . 
     The holding arm  35  having an arm embodiment  352  is equipped with a vertical holding board  351  at one end thereof which sticks externally out of the through hole  241  of the retaining mount  20 . The line of rack teeth  353  is disposed at one side of the arm embodiment  352  of the holding arm  35 . At the other end of the holding arm  35  is disposed a retaining tongue  354  which is associated with a spring element  355 . Next to the retaining tongue  354  and on the holding arm is disposed a stop projection  356 . The bottom cover  36  is removably secured to the bottom of the retaining mount  20 . 
     Thereby, a user can place a cellular phone T 1  in the housing recess  21  of the retaining mount  20  when he or she stays in an indoor space, an office, or is in a vehicle. In this situation, the signal socket and power socket of the cellular phone T 1  are engaged with the signal plug  22  and the power plug  23  of the housing recess  21 . In such a manner, incoming calls of the cellular phone T 1  can be received via the peripheral equipment of the cellular phone, such as a wired telephone T 2 , resulting in reduction of direct exposure of a user to electric-magnetic waves of the cellular phone, as shown in FIG.  4 . 
     Referring to FIGS. 1-5, as the cellular phone T 1  is placed in the housing recess  21 , the button  31  is pressed to move downwardly with its abutment wing  312  moving against the link bar  33 . Consequently, the retaining flange  333  is urged to withdraw backward out of engagement with the upper gear  341  of the gear set  34 . As a result of the exertion of the force of the spring,  355 , the holding arm  35  pops out and is limited not to depart from the retaining mount  20  by the stop projection  356 . In a reverse manner, as the cellular phone T 1  is to be secured in place in the housing recess  21 , the holding arm  35  only has to be pushed inwardly, causing the rack teeth  353  of the holding arm  35  to mesh with the lower gear  342  of the gear set  34 . Thus the arm embodiment  352  of the holding arm  35  is made to withdraw into the retaining mount  20  to allow a cellular phone T 1  to be right fit therein. The spring  355  is in a compressed state, as shown in FIG.  6 . 
     Referring to FIGS. 7-9, another embodiment of the present invention is illustrated wherein the retaining mount  40  is equipped with a removable seat  50 . The retaining mount  40  has a bottom supporting extension  401 , which is provided with a vertical groove track  41  at each side thereof. In correspondence to the groove tracks  41  are disposed a pair of retaining projections  51  of the rear sides of the removable seat  50  for locking purpose. A retractable hook  42  is disposed right between the groove tracks  41  for retaining engagement with a slot  52  defined at the rear side of the removable seat  50 . At the front side of the seat  50  is disposed a receiving recess  501  and at the bottom of the seat  50  is disposed a connector plug  53  which is in coupling engagement with a modular jack  43  defined on the bottom supporting extension  401  of the retaining mount  40 . 
     The removable seat  50  is designed to selectively match with individual cellular phones of various types produced by different manufacturers. Each cellular phone generally has a signal socket different from others. A user only has to select a proper type of removable seat  50  to match with his or her cellular phone. If a new cellular phone is purchased, only the removable seat  50 , not the whole retaining and transmission set, is replaced. 
     Referring to FIG. 10, a hand-free device T 3  of a cellular phone&#39;s peripheral equipment is in connection to the present invention wherein the retaining mount  20  of the present invention accommodates a cellular phone T 1  with a hand-free device T 3  connected to the switching and retaining device of the present invention by a conduction wire L 4 . Thereby incoming calls of a cellular phone can be directly transmitted to a peripheral equipment, such as a hand-free device T 3 , by way of the switching and retaining device of the present invention. 
     Referring to FIG. 11, in this embodiment, the present invention is directly employed as a hand-free device wherein a general circuitry for use in a hand-free device is included in the circuit set of the present invention. In that case, the retaining mount  60  is used as an embodiment of a hand-free device with a earphone socket hole,  601 , a microphone socket hole  602  disposed at one side thereof and a power socket  603  at the bottom thereof. Thereby the switching and retaining device of the present invention is converted into a hand-free device for a cellular phone T 1 . 
     In summary, the present invention can not only serve as a retaining means for a cellular phone but also permits incoming calls of a cellular phone to be received by a peripheral equipment of the cellular phone by connection of the cellular phone to the peripheral equipment thereof so as to protect people from being harmed and annoyed by electromagnetic wave.