JPH0191348U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the main body of a radio according to an embodiment of the invention, Fig. 1A is a state diagram with the external antenna extracted, Fig. 1B is a state diagram with the external antenna retracted, and Fig. 2 3 is an exploded perspective view showing the configuration of an antenna switching device according to an embodiment of the invention;
The figure is a perspective view showing the back side of the switching device, and FIG.
Fig. 4A is a plan view, Fig. 4B is a view taken along arrow A-A in Fig. 4A, and Fig. 5 is a structural diagram showing the antenna switching structure when the external antenna is stored. 5A is a plan view, FIG. 5B is a view taken along the line BB in FIG. 5A, and FIG.
FIG. 7 is a perspective view showing a radio device main body according to an embodiment of a conventional internal/external antenna switching device, FIG. 7 is a perspective view showing an antenna switching structure according to a conventional embodiment, and FIG. 7A is a perspective view of the whole. Fig. 7B is a partial perspective view, Fig. 8 is a diagram showing the antenna switching structure when the external antenna is stored, Fig. 8A is a plan view, and Fig. 8A is a plan view.
Figure B is a view taken along the line CC in Figure 8A, Figure 9 is a diagram showing the antenna switching structure when using an external antenna, Figure 9A is a plan view, and Figure 9B is a view of Figure 9A. D of A
- Shows the view from arrow D. In the figure, 1 is the radio main body, 2 is the built-in antenna unit, 3 is the battery pack, 4 is the external antenna, 4a is the cap, 5 is the sheet metal, 6 is the printed circuit board, 7 is the changeover switch, 8 is the actuator, and 9 is the installation. Metal fittings, 10 is a holder, 11 is an insert metal fitting, 11a is an exposed metal fitting part, 12 is an antenna rigid body part, 13 is a retaining metal fitting, 14 is an element, 18 is a terminal plate, 19 is a rotor, 19a is an operating lever, and 19b is a puller. Hanging leg, 20 is cam, 20a
20b is a contact, 21 is a torsion coil spring, 22 is a cam guide hole, 23 is a hooking rib, 24 is a storage guide hole, 25 is a cutout hole, 26 is a screw A, and 27 is a screw B. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] (1) An external antenna and an internal antenna are connected to a changeover switch in a switchable manner, and a circuit that serves as a break contact is used in the changeover circuit, and the changeover is performed by retracting the external antenna. An internal/external antenna switching device provided with a switching means that switches the switching contact of the switch to the contact of the internal antenna, and switches the switching contact of the switching switch to the contact of the external antenna when the external antenna is pulled out. (2) The rod-shaped external antenna is characterized by the fact that only the part that operates the changeover switch is rigid, and the other elements are flexible, considering safety in use and reliability of the antenna itself and switch switching. An internal/external antenna switching device according to claim 1 of the utility model registration claim. (3) Between the rod-shaped external antenna and the built-in antenna unit, the movement of the vertically movable external antenna is smoothly and reliably controlled in the lateral direction and toward the built-in antenna.
The scope of the utility model registration claim is characterized in that it is equipped with a cam mechanism for converting the operation into a rotational direction, and also uses a torsion coil spring to ensure that the ON operation of the changeover switch is in a stable state. The internal/external antenna switching device according to item 1.