JPH03201753A - Double side handset - Google Patents

Abstract

PURPOSE:To attain talking from either side of the handset by providing a reception unit sound mouth piece and a microphone sound mouth piece to both front and rear sides of the handset. CONSTITUTION:A couple of reception unit sound mouth pieces 20, 22 are provided at nearly the same position of upper side in the vertical direction on the front side and the rear side of a handset 6. Similarly a couple of microphone sound mouth pieces 24, 26 are provided at nearly the same position of the lower side in the vertical direction at the front side and the rear side. Then a couple of the reception unit sound mouth pieces 20, 22 use a center board 28 in common provided to the depth of the handset 6 and the center disk 28 is formed circular and a vibration ring 30 whose cross section is a channel-shape is connected to the outer circumference. Thus, since the reception unit sound mouth pieces 20, 22 and the microphone sound mouth pieces 24, 26 are provided on both the front side and the rear side, talking is attained from any side. Thus, when the handset is used for a conventional portable telephone set, the necessity of passing the handset from one side to another as a conventional handset is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a double-sided handset for a mobile phone packing machine and a vehicle-mounted car telephone.

BACKGROUND OF THE INVENTION In recent years, with the advent of the information age, car telephones have become widespread. At the same time, there is an increasing desire to use telephones not only in cars but also outdoors. Therefore, it has been proposed to use the handset of a car talking machine as a cordless mobile phone.

Hereinafter, with reference to FIGS. 5 and 6, an outline of a handset and receiver for a conventional mobile phone/vehicle-mounted car phone will be explained. FIG. 5 is a perspective view showing a state in which the handset 6 is connected to the receiver base 2 by a curl cord 4, and the receiver is placed on the receiver base 2. As shown in FIG. Handset 6/ri is on the back or facing upwards.

FIG. 6 is a perspective view of the handset 6 used as a cordless mobile phone with the connection part 8 of the curl cord 4 removed. In the figure, a liquid crystal display panel 8, a keyboard 10, a speaker 12 when on-hook, etc. are provided on the back side. A battery pack 14 is provided on the ventral side, and a battery is housed inside. Further, on the ventral side, there are provided a receiving unit sound port (not shown) for listening to the voice of the communication partner and a microphone sound port (not shown) for transmitting your own voice.

Furthermore, an extendable antenna 16 for use as a cordless mobile phone is provided at the top.

The operation of the mobile phone/in-vehicle car phone having the above-described conventional configuration will be explained. 1. When used as an in-vehicle mobile telephone, the handset 6 is connected to the receiver 2 by the curl cord 4, and the receiver is placed on the receiver 2.

In this state, use the keyboard 10 to make an on-hook dial, grab the handset, and bring it near your face (1). It will be located near the mouth. In this state, you can have a normal telephone conversation.

Next, when using it as a cordless mobile phone, the 6th
As shown in the figure, the curl cord 4 is removed from the handset 1 and the antenna 16 is extended. Then, hold the handset 6 with the dorsal side where the keyboard 10 is provided facing forward, dial the key in, and then switch handset 6 and place the receiver unit sound port and microphone sound port (not shown) on the ventral side close to your ear. Place it near your mouth to handle calls.

Problems to be Solved by the Invention However, the conventional configuration as described above has the following problems. In other words, when using it as a mobile phone, you must first hold it with the dorsal side facing forward in order to dial and key in, and then switch the hand to make a call and use the ventral side to make a call. Therefore, the operation was troublesome.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a double-sided handset that does not require changing hands when used as a mobile phone.

Means for Solving the Problems The present invention has been made to achieve the above object, and includes a pair of receiver unit sound ports and a pair of microphone sound ports provided at the same position on the ventral side and the back side of the handset. The pair of receiving unit sound ports or the pair of microphone sound ports each share a center plate on the back side of the handset, and a vibration ring having a U-shaped cross section is connected to the outer periphery of the center plate. A voice coil is wound around the outer circumference of the voice coil, and an inner ring magnet is arranged inside the U-shape of the vibration ring on the circumference of the voice coil. An outer ring magnet is arranged, and diaphragms are provided on the ventral side and the dorsal side of the center plate.

Function: By providing the receiving unit sound port and the microphone sound port on both the ventral and dorsal sides, calls can be made from either side. Therefore, when using the mobile phone as a conventional mobile phone, there is no need to change hands as in the past.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 4. Fig. 1 is a vertical cross-sectional side view of the handset of this embodiment, Fig. 2 is a perspective view showing the handset of Fig. 1 placed on a receiver, and Fig. 3 is a side view of the handset of Fig. 2. FIG. 4 is a perspective view showing the handset shown in FIG. 2 being used as a mobile phone. It should be noted that parts having the same functions as those in FIGS. 5 and 6 showing the conventional example are given the same numbers and their explanations are omitted.

As shown in FIG. 1, on the ventral side and dorsal side of the handset 6,
A pair of receiving unit sound ports 20 and 22 are provided at substantially the same position on the upper side in the vertical direction. Similarly, a pair of microphone sound ports 24 and 26 are provided at substantially the same position on the lower side in the vertical direction on the ventral side and the dorsal side.

The pair of receiving unit sound ports 20 and 22 share a center plate 28 provided on the back side of the handset 6.

This center plate 28 has a circular shape, and a vibration ring 30 having a U-shaped cross section is connected to the outer periphery. A voice coil 32 is wound around the outer peripheral end of the U-shape. An inner ring magnet 34 and an outer ring magnet 36 are placed with the voice coil 32 sandwiched therebetween. One of the ring magnets 34 and 36 has an S pole and the other has an N pole. The inner ring magnet 34 is disposed inside the U-shape of the vibration ring 30 on the inner circumference side of the voice coil 32 .

Further, the outer circumferential ring magnet 36 is arranged on the outer circumferential side of the voice coil 32. Both ring magnets 34 and 36 are fixed to the receiver unit case 38. Also,
A paper cone 40 is fixed to the center plate 28. This cone paper 40 has a generally truncated conical tube shape, and one small opening side of the truncated cone shape is fixed to the center plate 28.

A diaphragm 42 is fixed to the other large opening. The outer periphery of the diaphragm 42 has an edge portion 44 that functions as a damper.
It is attached to the receiver unit case 38 via the receiver unit case 38.

Such cone paper 40 and diaphragm 40 are provided on both the ventral side and the dorsal side.

Similarly, the pair of microphone sound ports 24 and 26 also share a center plate 28 on the back side of the handset 6, and include a voice coil 32, an inner ring magnet 34, an outer ring magnet 36, a diaphragm 42, and the like. It has a microphone case 46 to which things are attached.

Further, on the back side, a liquid crystal display panel 8, a keyboard 10, and a speaker 12 are provided as in the conventional case. A battery pack 14 is provided on the ventral side of the casing,
The claw receiver that comes into contact when the receiver is placed on the stand 2 is the opening 48,
50, one of which moves when touched, and can detect whether it is being used as a mobile phone or an in-vehicle car phone. A printed circuit board 52 is disposed inside the transceiver 6 which has been folded.
A button controls the handset and receiver. With this control, the direction of the current flowing to the voice coil 32 is reversed when used as a mobile phone and when used as an in-vehicle car phone, so that calls can be made using the ventral side or the dorsal side. This prevents the sound quality from changing and becoming distorted when the

Next, the operation of the above embodiment will be explained.

When used as an in-vehicle telephone, the handset 6 is connected to the receiver 2 by a curl cord 4, and the receiver is placed on the receiver 2, as shown in FIG. In this state, use the keyboard 10 to make an on-hook dial, grab the handset 6, and bring it close to your face.The ventral receiver unit 20 will be located near your ear, and the microphone sound port 24 will be located close to your ear. It is located near the mouth (Figure 3). When a call is made in this state, a current flows through the voice coil 32 in the receiver unit, and a force is generated by the magnetic field created by the inner ring magnet 34 and the outer ring magnet 36 against this current flow, and the voice coil 32 When moved to the right in the figure, the center plate 28, paper cone 40, and diaphragm 42 vibrate, and the voice of the other party can be heard. Similarly, in the microphone, the voice vibrates the diaphragm 42 and the center plate 28, causing the voice coil 32 to move leftward in the figure and vibrate. At this time, a current flows in the voice coil 32 due to the magnetic field created by the inner ring 34 and the outer ring 36, and the voice is transmitted to the other party as an electric signal.

When using it as a folded cordless mobile phone, remove the curl cord 4 from the handset 6 and hold it with the antenna 16 extended and the back side where the keyboard 10 is provided facing forward (FIG. 4).

In this state, the user dials/keys in using the keyboard 10, places the receiving unit sound gap 22 provided on the back near the ear, and positions the microphone sound port 26 near the mouth to make a call. At this time, the action of the movable tab rest 48 detects that the keyboard 10 is being used with the handset 6 separated from the rest 2, and therefore the keyboard 10 is being used as a mobile phone, and the voice coil 32 is activated. The direction of the current is switched to the opposite direction. By this switching, it is possible to avoid a change in sound quality between when the handset 6 is used as a mobile phone and when it is used as an in-vehicle car phone.

As explained above, according to this embodiment, there is no need to change handset 6 when using it as a mobile phone or as an in-vehicle car phone, and the operation becomes easy. Furthermore, by switching the direction of the current in the voice coil depending on which telephone is being used, it is possible to prevent the sound quality from changing and becoming distorted.

In the above embodiments, whether the movable claw holder is used as a mobile phone or an in-vehicle car phone depends on the function of the opening 48, but in other embodiments, it depends on the attachment/detachment state of the curl cord 4. It may be something that is detected. Furthermore, although the above embodiments have been described as being equipped with the liquid crystal display panel 8 and the speaker 12, the present invention can be practiced even if these components are not provided in other embodiments. .

Effects of the Invention As is clear from the above embodiments, the present invention provides a receiving unit and a microphone on both sides of the handset, on the ventral side and the dorsal side, so that calls can be made on either side. Therefore, when using the handset as a mobile phone,
- There is no need to switch from the echo side to the ventral side, making operation easier.

By sharing the housing, center plate, and voice coil, rather than having two separate receiver units and microphones,
The number of parts can be reduced.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional side view of a double-sided handset showing an embodiment of the present invention; Fig. 2 is a perspective view showing the handset of Fig. 1 placed on a receiver; Fig. 2 is a perspective view showing how the handset shown in Fig. 2 is used as an in-vehicle car phone, Fig. 4 is a perspective view showing how the handset shown in Fig. 2 is used as a mobile phone, and Fig. 5 is a perspective view showing a conventional example. FIG. 6 is a perspective view (corresponding to FIG. 4) showing a state in which the handset of FIG. 5 is used as a mobile phone. 2...Receiver stand, 4...Curl cord, 6...Handset, 8...Liquid crystal display board, 10...Keyboard, 1
2...Speaker 16...Antenna, 20.22...
Receiving unit old days, 24. 26...Microphone interval, 28...Center plate, 30...Vibration ring, 32
・Voice coil, 34... Inner ring magnet, 36
...Outer ring magnet, 40...Cone paper, 42...
・Vibration plate.

Claims (1)

[Claims] A pair of receiving unit sound ports and a pair of microphone sound ports are provided at the same position on the ventral side and the back side of the handset, and these pairs of receiving unit sound ports or the pair of microphone sound ports are respectively located on the back side of the handset. A vibration ring having a U-shaped cross section is connected to the outer periphery of the center plate, and a voice coil is wound around the outer peripheral end of the U-shape. An inner ring magnet is arranged inside the U-shape of the vibration ring on the circumference side, an outer ring magnet is arranged on the outer circumference side of the voice coil, and a vibration plate is arranged on the ventral side and dorsal side of the center plate. A double-sided handset characterized by being provided with.