Holding platform for mobile information terminals, desktop telephone, and fixing method connector for mobile information terminals

1. A portable information terminal holding base, comprising:

a holding base main body having a main mounting surface inclined with respect to a horizontal surface,

the holding base main body being configured to hold, on the main mounting surface, one of a plurality of types of portable information terminals including at least a first portable information terminal and a second portable information terminal that is different from the first portable information terminal in length and width size and position of a battery-charging slot provided at a lower end thereof; and

a battery-charging cover removably mounted to the holding base main body and comprising a terminal housing section configured to house therein one of the plurality of types of battery-charging plug connectors, which are formed compatible with the specifications of the battery-charging slots of the plurality of types of portable information terminals, respectively,

the battery-charging cover being configured to:

house, at a first fixing position, a battery-charging plug connector, which is formed compatible with specifications of a battery-charging slot of the first portable information terminal; and

fix, when the second portable information terminal is to be held on the holding base main body, at a second fixing position different from the first fixing position in accordance with the length and width size of the second portable information terminal and the position of the battery-charging slot of the second portable information terminal, a battery-charging plug connector, which is formed compatible with specifications of the battery-charging slot of the second portable information terminal,

wherein the first fixing position and the second fixing position are positions different from each other in a fore-and-aft direction and in a right-and-left direction, and the first fixing position and the second fixing position are positions at which the one of battery-charging plug connectors fixed to the battery-charging cover is insertable into the one of battery-charging slots of portable information terminals.

2. A portable information terminal holding base according to claim 1 , wherein the battery-charging cover comprises:

a terminal pressing plate to be fixed to the terminal housing section having the one of battery-charging plug connectors housed therein,

the terminal pressing plate being configured to fix the one of battery-charging plug connectors at the first fixing position or the second fixing position.

3. A portable information terminal holding base according to claim 2 , comprising an adsorption sheet having micropores formed therein,

the adsorption sheet being provided on an inner wall of each of the terminal housing section and the terminal pressing plate at the first fixing position or the second fixing position.

4. A portable information terminal holding base according to claim 1 ,

wherein the first portable information terminal has the smallest length and width size, and the plurality of types of portable information terminals at least include a third portable information terminal having the largest length and width size more than twice as large as the smallest length and width size, and

wherein the portable information terminal holding base comprises:

an extensible holding member provided on a first side edge portion side of the holding base main body,

the extensible holding member comprising a slide plate that is slidable inside the holding base main body,

the extensible holding member having an extensible mounting surface that is movable in parallel to the main mounting surface,

the extensible holding member comprising a stopper for supporting a lower end of the second portable information terminal when the extensible holding member is extended to a predetermined extension position; and

an expansion battery-charging cover removably mounted to a lower end of the slide plate at a position between the main mounting surface and the extensible mounting surface,

the expansion battery-charging cover being configured to fix, when the third portable information terminal is to be held on the holding base main body under a state in which the extensible holding member is extended to the predetermined extension position, at the third fixing position different from the first fixing position in accordance with the length and width size of the third portable information terminal and a position of a battery-charging slot of the third portable information terminal, a battery-charging plug connector, which is formed compatible with specifications of the battery-charging slot of the third portable information terminal.

5. A portable information terminal holding base according to claim 4 , wherein the expansion battery-charging cover comprises:

an expansion terminal housing section configured to house therein the one of the plurality of types of battery-charging plug connectors, which are formed compatible with the specifications of the battery-charging slots of the plurality of types of portable information terminals, respectively; and

an expansion terminal pressing plate to be fixed to the expansion terminal housing section having the one of battery-charging plug connectors housed therein,

the expansion terminal pressing plate being configured to fix the one of battery-charging plug connectors at the third fixing position.

6. A portable information terminal holding base according to claim 5 , comprising an adsorption sheet having micropores formed therein,

the adsorption sheet being provided on an inner wall of each of the expansion terminal housing section and the expansion terminal pressing plate at the third fixing position.

7. A portable information terminal holding base according to claim 4 ,

wherein the first fixing position, the second fixing position, and the third fixing position are positions different from each other in the fore-and-aft direction and in the right-and-left direction, and

wherein the first fixing position, the second fixing position, and the third fixing position are positions at which the one of battery-charging plug connectors fixed to the battery-charging cover or the expansion battery-charging cover is insertable into the one of battery-charging slots of portable information terminals.

8. A desk phone, comprising:

the portable information terminal holding base according to claim 1 ; and

a call receiver section provided on a second side edge portion side of the holding base main body.