JPH0795116A - Communication terminal equipment - Google Patents

Abstract

PURPOSE:To prevent the terminal equipment from being floated from a desk or the like and to prevent movement of a cover when an operation button is depressed by devising the terminal equipment such that the cover cannot be turned by a cover turning block means when a handset is extracted from the cover. CONSTITUTION:When a handset 8 is extracted from a cover 6, a stopper 21 is moved up to a turning block position of the cover 6 in a direction of the arrow F while pushing a hook switch 20 by an energizing force of a spring 27. When the hook switch 20 is at this position, one end (rectangular part) 26a of the stopper 26 is projected from a window 6b of the cover 6 and the rectangular part 26a is fitted to a groove 2d of a 1st operation section 2 of the main body side to set the lock state to the cover 6 in which the turning is blocked at a fully open position. Since the cover 6 is blocked for turning in the direction of arrow (returning direction = closing direction) and set to the fully open position in this way, the operator gets a sense of operation similar to that when the handset 8 is supported to the cover and attains a pleasant talking.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
Alternatively, it relates to a communication terminal for data transmission.

[0002]

2. Description of the Related Art Conventionally, a handset is built in a cover,
In a communication terminal capable of making a call and / or data transmission, the cover is attached to the main body of the communication terminal in a rotatable manner via a hinge portion using a torsion bar. According to the configuration using the torsion bar, when the cover is opened, the torsion bar is twisted to generate a force to close the cover, so that the opening speed of the cover slows down and the cover vigorously hits the desk and breaks. Problems such as are prevented.

[0003]

However, in the conventional structure in which the cover is rotatably attached to the main body via the hinge portion using the torsion bar, when the cover is fully opened and the handset is taken out from the cover, Since the cover becomes lighter, the reaction force of the torsion bar lifts the cover from the desk, and if you press the operation button as it is,
There were problems such as the cover moving and making the operation uncomfortable, and easy operation mistakes.

The present invention has been made in order to solve the above-mentioned problems caused by the reaction force of the torsion bar, and an object of the present invention is to use a torsion bar for balancing in the hinge portion of the cover. In addition, even if the handset is taken out of the cover, it is possible to prevent the cover from floating from the desk, etc., and further, it is possible to prevent the cover from moving when pushing the operation button. It is to provide a communication terminal capable of eliminating a malfunction such as an operation error.

[0005]

According to a first aspect of the present invention, a cover for protecting a first operation section and / or a display section provided on a communication terminal body is provided with a second operation section and a handset holding section. In a communication terminal for making a call and / or data transmission using a line, the cover is prevented from rotating by the cover rotation preventing means when the handset is taken out from the cover, thereby achieving the above object.

In addition to the above structure, the invention of claim 2 and claim 3 further comprises a structure in which the cover rotation preventing means is linked to a hook switch for detecting whether or not the handset is held by the cover. The cover rotation preventing means is a hook switch for detecting whether or not the handset is held by the cover.
The above object is achieved more efficiently.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. The same reference numerals in each drawing indicate the same or corresponding parts. 1 is a schematic perspective view showing a schematic configuration of an embodiment of a communication terminal to which the present invention is applied, and FIG. 2 is a block diagram showing signal exchange of the communication terminal of FIG. FIG. 1 shows the communication terminal in a usable state.

In FIGS. 1 and 2, 1 is a communication terminal body, 2 is a cylindrical portion 2a which slides on a cylindrical portion 6a of a cover 6,
2b and a first operation portion on the main body side having a groove portion 2c that fits into the claw shape 9a of the cover hook 9, 3 is an LCD (liquid crystal display) as an image display means, and 4 is a data transmission destination or a call destination. In order to do so, the ten-key buttons 5 provided on the first operation unit 2 on the main body side are ICs for storing the image data in the IC card, and conversely for loading the image data stored in the IC card into the communication terminal. Card insertion part, 6
Is a cover rotatably supported by the communication terminal body 1 via a cylindrical portion 6a for protecting the first operation section 2 and the image display means (LCD) 3 on the communication terminal body 1 side.

In FIG. 1 and FIG. 2, 7 is a cover-side second operation portion provided on the cover 6, and 8 is a receiver portion 8.
a is a handset provided with a microphone portion 8b, 9 is a cover hook supported by the cover 6 at a fulcrum not shown, 9a is a nail shape formed at the tip of the cover hook 9, 10 is a ring tone, dial tone or calling tone External speaker for voice on call operation such as ring tone, 11 is ISD
N line jack, 12 general analog line jack, 13 mobile phone jack, 14 handle rotatably supported by the communication terminal body 1 via a fulcrum 14a, 15 power switch, 16 detachable Possible power cable, 17 is an ISDN line cable. The handset 8 is removably housed and held in a recessed handset holding portion 51 formed in the cover 6.

In FIG. 1 and FIG. 2, 18 is an IC card on which image data is recorded, and 19 is an IC card 18
The image data of the first sheet recorded in No. 20 is a hook switch 20 having one end in contact with the handset 8 and the other end in contact with the micro switch 29.

In FIG. 2 showing the exchange of signals of the communication terminal of FIG. 1, 100 is a CPU for controlling the whole, 101 is a CPU bus, and 102 is processing for compressing / decompressing an input image signal and outputting it. The image processing unit to perform, 103 is R
OM, 104 is RAM, 105 is a DMA controller,
Reference numeral 106 is an input port, 107 is an output port, 108 is an external storage device, and 109 is an external interface unit for connecting to an external device, such as an SCS1 RS-232-C connector or an external trigger terminal.

Further, in FIG. 2, 110 is an ISDN controller, 111 is an image input section for inputting an image through a video input terminal or an S-video input terminal, and 112 is an image output section for outputting an image through a video output terminal or an S-video output terminal. 1
13 is an IC card input unit, 113a is an IC card output unit, 114 is an audio codec, 115 is a switch,
116 is an NCU for connecting to a general analog line, 1
Reference numeral 17 is a CCU for connecting to an ISDN line, 118 is a general analog line, 119 is an ISDN line, 120 is a modem, and 22 is a mobile phone.

FIG. 3 is a schematic perspective view showing a state of the communication terminal shown in FIG. 1 during transportation. 4 is a schematic perspective view showing a state in which the communication terminal of FIG. 1 is mounted on a vehicle and image data recorded in an IC card is transmitted by a mobile phone. In FIG.
Reference numeral 21 is a car dashboard, 22 is a mobile phone, and 23 is a cable for connecting the communication terminal body 1 and the mobile phone 22.

FIG. 5 is a schematic exploded perspective view showing a state of the hinge portion when the cover 6 is closed in the communication terminal of FIG. 1, and FIG. 6 is a hinge when the cover 6 is opened in the communication terminal of FIG. It is a typical disassembled perspective view which shows the state of a part. In FIGS. 5 and 6, 24 is a torsion bar attached to the hinge portion,
Reference numeral 25 is a shaft as an auxiliary hinge part mounted on the hinge part.

FIG. 7 is a sectional view in the thickness direction of the cover 6 at the window 6b portion of the cover 6 shown in FIG.
FIG. 8 is a sectional view of the same portion showing a state when the handset 8 is taken out from the state of FIG. 7. In FIGS. 7 and 8, 26 is a stopper for preventing the rotation of the cover 6, 27 is a spring for urging the stopper 26 in the protruding (locking) direction, 28 is a micro switch 29 and a second cover side. A substrate for forming electric wiring of a switch (not shown) of the operation unit 7 is a micro switch 29 that contacts the hook switch 20 and outputs a signal to the CPU 100.

FIG. 9 is a sectional view in the thickness direction of the cover 6 at the window 6b portion of the cover 6 shown in FIG.
10 is a cross-sectional view showing a configuration (embodiment) different from that of FIG. 10, and FIG. 10 is a cross-sectional view of the same portion showing the state when the handset 8 is taken out from the state of FIG. In this embodiment, the cover 6
A stopper (section) 26 that prevents the rotation of the hook is integrally formed as a part of the hook switch 20. Note that FIG.
Further, in FIG. 10, 2d is a groove portion provided in the cylindrical portion 2b of the hinge portion for fitting with the stopper (portion) 26.

FIG. 11 shows the hook button 7a of the second operation portion 7 on the cover side and the micro switch 29 (FIGS. 7 to 10).
Is a truth table of. FIG. 12 is a block diagram in which a part of FIG. 2 is extracted and enlarged in order to explain the operation of switching the sensitivity of the microphone unit 8b depending on the combination of the signals in FIG. In FIG. 12, reference numeral 121 is an amplifier section with a gain G1, and 122 is an amplifier section with a gain G2, which has a relationship of gain G1> gain G2. Reference numeral 123 denotes a switch unit for switching the circuit of the microphone 8b to the amplifier unit 121 having the gain G1 or the amplifier unit 122 having the gain G2 in order to switch the sensitivity of the microphone 8b.

FIG. 13 is a schematic perspective view showing a schematic configuration of another embodiment of the communication terminal to which the present invention is applied. In this embodiment, the external speaker 10 in the configuration of FIG. 1 is omitted. 13, in this embodiment, the cover 6 in FIG.
Instead of the above, a cover 38 having an opening 38a for outputting sound is used, and in place of the handset 8 in FIG. 1, a receiver 39a and a microphone 39b are provided, and a sound is provided on the side facing the receiver 39a. A handset 39 having an opening 39c for use is used. Note that, for clarity, the cable of handset 39 is not shown in the configuration of FIG.

The embodiment shown in FIG. 13 is different from the embodiment shown in FIG. 1 in the above points, but the other parts have substantially the same structure, and corresponding parts are designated by the same reference numerals respectively. Detailed description is omitted. FIG. 14 is a truth table of the hook button 7a of the second operation section 7 on the cover side and the micro switch 29 (FIGS. 7 to 10) in the embodiment of FIG. FIG. 15 is a block diagram for explaining the operation of switching the volume of the receiver unit 39a and the sensitivity of the microphone unit 39b depending on the combination of the signals in FIG. The same reference numerals in FIG. 15 as those in FIG. 2 indicate the same or corresponding portions, respectively.

In FIG. 15, reference numeral 124 denotes a gain G3 amplifier section, and 125 denotes a gain G4 amplifier section.
There is a gain G4 relationship. A switch unit 126 switches the circuit of the receiver 39a to the amplifier unit 124 of the gain G3 or the amplifier unit 125 of the gain G4 in order to switch the volume of the receiver unit 39a. Reference numeral 127 denotes an amplifier unit having a gain G5, and 128 denotes an amplifier unit having a gain G6.
5> gain G6. 129 is a microphone section 39b
Amplifier unit 127 with gain G5 to switch the sensitivity of
Alternatively, it is a switch unit for switching the circuit of the microphone 39b to the amplifier unit 128 having the gain G6.

FIG. 16 is a schematic perspective view showing the structure of a conventional cover 30, and FIG. 17 is a schematic sectional view taken along the thickness direction of the cover 30 of FIG. The cover 30 has a structure before the improvement of the cover 6 according to the present invention, and the cover 30 includes a conventional handset 33 (see FIG. 1).
7) is stored and held. 16 and 17,
The conventional cover 30 is formed with two square windows 30a and 30b communicating with the handset holder 51.
The leaf springs 31 and 32 for holding 3 are these square windows 3
It is attached so that it can retract through 0a and 30b.

The handset 33 has notches 33a, 33
b (only one notch 33a is shown in FIG. 17) is formed. Handset 33 has these cutouts 33
When the leaf springs 31 and 32 are engaged with a and 33b, they are housed and held in the handset holding portion 51 of the cover 30. In FIG. 17, a shaft 34 is fixed in a groove 30c formed near the tip of the cover 30 (left side in the drawing), and the cover hook 9 is locked to the shaft 34 (position for locking the cover in the closed position). A torsion coil spring 35 for urging the coil is attached.

FIG. 18 is a schematic vertical sectional view showing a first embodiment of the cover 6 of the communication terminal to which the present invention is applied. In FIG. 18, reference numeral 36 is for holding the handset 8 in the handset holding portion 51. It is a frame. This piece 36 has hooks 9
Is biased in the handset holding direction by the torsion coil spring 35 for biasing the. FIG. 19 is a schematic vertical sectional view showing a second embodiment of the cover 6 of the communication terminal to which the present invention is applied, and 37 in the figure is a leaf spring for biasing the hook 9 to the lock position. The leaf spring 37 is integrally formed with a biasing engagement portion (arc portion) 37a for holding the handset 8 in the handset holding portion 51.

The communication terminal configured as described above can be installed and used, or can be used as a portable type that can be easily carried by an operator. Therefore, first, carrying (transporting) the communication terminal to which the present invention is applied will be described.

Referring to FIG. 1, the operator can see the power cable 1
6 and ISDN line cable 17 from the main body 1,
The cover 6 is manually rotated in the direction of arrow A using the cylinder 6a as a fulcrum until it comes into contact with the first operation unit 2 on the main body side. By rotating the cover 6 to the closed position in this manner, the first operation unit 2, the image display means (LCD) 3, and the second operation unit 7 on the cover side are protected. At this time, the cover 6 is locked by the claw shape 9a of the cover hook 9.
Is carried out by entering into the groove 2c of the first operation portion 2 on the main body side, and the cover 6 is securely locked in the closed position so as not to rotate due to vibration during conveyance. And the operator
After releasing the positioning means (not shown) of the handle 14, the handle is rotated in the direction of arrow A by approximately 90 degrees and fixed by the positioning means (not shown) to bring the state of FIG. According to this state, the communication terminal can be carried while holding the grip portion 14b.

When the communication terminal is used after finishing the transportation,
In FIG. 3, after releasing the positioning means (not shown) of the handle 14, the operator rotates the handle 14 in the direction of arrow B by approximately 90 degrees and fixes it by the positioning means (not shown). After that, the claw shape 9a is moved in the direction of arrow D by pushing the 9b part of the cover hook 9, and the claw shape 9a is moved from the groove 2c.
Remove a and rotate the cover 6 in the direction of arrow C until it abuts on a stopper (not shown). As a result, the operation units 2 and 7
Is opened, the lines required for the operation are connected, the power cable 16 is plugged in, and the power switch 15 is turned on.

Here, referring to FIGS. 1 and 2, as a typical operation example of a communication terminal to which the present invention is applied, ISD
The operation of transmitting the image data recorded in the IC card while talking with the destination using the N line will be described. In FIG. 1, when the IC card 18 is inserted into the IC card insertion portion 5, the CP is input from the IC card input portion 113 of FIG.
A signal is input to U100, and the CPU 100 causes the LCD 3 to display the first image data 19 of the IC card 18.

Next, the operator pushes the hook button 7a on the second operating portion 7 on the cover side. Hook switch 20
Turns on the micro switch 29 if the handset 8 is in the cover 6, and turns off the micro switch 29 if not. The micro switch 29 is
When it is ON, a LOW signal is output to CPU 100, and it is OFF
In the state of FIG. 1, the CPU 100 prevents the handset 8 and the external speaker 10 from operating by the LOW signal of the micro switch 29 in the state of FIG.

However, when the hook button 7a on the second operation section 7 is pressed, the CPU 100 causes the hook button 7a to be pressed.
When the HIGH signal of a is input, the CPU 100
Despite the signal of the microswitch 29 being LOW, it operates as follows. First, the external speaker 10 emits a dial tone. Second, it enables the handset 8 while still held by the cover 6. Thirdly, the sensitivity of the microphone portion 8b of the handset 8 is set to the high sensitivity side.

The reason why it operates in this way is that when the handset 8 is held by the cover 6, the distance between the operator and the microphone portion 8b of the handset 8 is about 50 cm, and when the user holds the handset 8 and talks. This is because the distance is much larger than the distance of about 5 cm, and the destination becomes difficult to hear unless the sensitivity of the microphone is increased. That is, the combination of the HIGH signal of the hook button 7a and the LOW signal of the micro switch 29 causes the CPU 1
00 sets the sensitivity of the microphone portion 8b of the handset 8 to the high sensitivity side.

As described above, when the CPU 100 makes the handset 8 held by the cover 6 operable by pressing the hook button 7a, the operator dials the destination using the ten-key button 4 to make a call. Press,
Press the dial send button of the second operation unit 7 on the cover side. When such an operation is performed, the CPU 100 in FIG.
Calls the destination using the ISDN line 119 via the ISDN controller 110. Then, when the transmission destination answers the telephone mouth, the sound is heard from the external speaker 10, and the operator talks without holding the mouth close to the microphone portion 8b of the handset 8, and the second operation portion 7 on the cover side is touched. A desired image is selected by operating the image selection button of.

In FIG. 2, the CPU 100 sequentially displays images on the LCD 3 in response to a signal from the second operation unit 7, and the operator pushes the dial of the transmission destination again with the ten-key button 4 when the required image is displayed. , Press the dial send button of the second operation unit 7 on the cover side. Then, the CPU 10
0 transmits the image data displayed on the LCD 3. At this time, the operator can make a call without holding the handset 8 in hand, so while taking a call, he / she can take notes, search for materials, and take things a little away. It can be done easily. In other words, you can easily do something while making a call.

Since the communication terminal to which the present invention is applied can be mounted (mounted on a vehicle) in an automobile, a mobile telephone will be used as an operation example when mounted on a vehicle, referring to FIGS. 2 and 4. The operation of transmitting the image data recorded in the IC card will be described. In FIG. 4, the communication terminal main body 1 has the handlebar 14 removed for mounting on the vehicle, and is attached under the dashboard 21 of the vehicle by means not shown. The power source is taken from the car battery by means not shown. The operator first talks with the destination by using the mobile telephone 22 alone without using the cable 23, and causes the LCD 3 to display the image data of the IC card 18 in the same manner as in the case where the ISDN line is used.

Next, the operator, while talking,
The image selection button on the second operation unit 7 on the cover side is operated to select the required image. In FIG. 2, the CPU 100
Displays the images sequentially on the LCD 3 in response to a signal from the second operation unit 7, and the operator inserts the cable 23 into the mobile phone jack 13 and the mobile phone 2 when the required image is displayed.
2 and press the image transmission button on the second operation unit 7 on the cover side. Then, the CPU 100 transmits the image data displayed on the LCD 3.

By the way, the handset 8 is taken out from the cover 6 in the normal telephone operation of simply talking with the other party, not the above-mentioned typical operation of transmitting image data while talking with the destination. Sometimes it is better to hold it in your hand. The reason is that firstly, it is natural for some people to feel natural and easy to operate, and secondly, it is convenient when they have a conversation that they do not want to be heard by others in the business. This is because

However, in the conventional communication terminal using the torsion bar in the hinge part, when the handset 8 is taken out from the fully opened cover 6 for talking with the other party, the load is reduced by the weight of the handset 8. Therefore, the cover 6 slightly closes and floats from the stopper (or the positioning holding portion), and if the button on the second operation portion 7 on the cover side is pressed as it is, the cover 6 moves until it hits the stopper, and the operation is performed. There was an inconvenience that it was uncomfortable and easy to make a mistake.

Therefore, in the communication terminal to which the present invention is applied,
Even when the handset 8 is taken out from the cover 6, the cover 6 does not move. Next, with reference to FIGS. 5 to 10, a configuration for always properly holding the cover 6 in the fully open position regardless of the presence or absence of the handset 8 will be described. 5 is an exploded perspective view showing a state of the hinge portion when the cover 6 is closed, and FIG. 6 is an exploded perspective view showing a state of the hinge portion when the cover 6 is opened.

In FIGS. 5 and 6, the cross section of the torsion bar 24 has a teardrop shape (waterdrop shape) made up of a semi-circular portion and a triangular portion, and two piano wires are approximately X-shaped inside thereof. It is arranged in a mold and is divided into two halves, which are rotatable with respect to each other, with a central portion as a boundary. One end of the cylindrical portion 2a of the first operation portion 2 on the main body side that fits with the one half portion 24a has a similar teardrop shape, and the cylindrical portion 6a of the cover 6 that fits with the other half portion 24b.
One end of each has a similar teardrop shape, and the one half portion 24a is fitted to the cylindrical portion 2a and the other half portion 24b is fitted to the cylindrical portion 6a so as not to rotate by the mutually triangular portions. ing.

The shaft 25 serving as an auxiliary hinge portion has a cylindrical portion 6
A shaft portion 25a fitted to a and a shaft portion 2 fitted to the cylindrical portion 2b
5b and. With the cover 6 closed,
One half 24a of the torsion bar 24 and the other half 2
Since the ridge lines of the triangular portions of the 4b portions coincide with each other as shown in FIG. 5, no reaction force is generated in the torsion bar 24. When the cover 6 is rotated in the direction of arrow C from the state shown in FIG. 5 to fully open the cover and open the operation portion, the state shown in FIG. 6 is obtained.

In FIG. 6, when the cover 6 is rotated,
The half portion 24b fitted to the cylindrical portion 6a also rotates in the same manner. Since the torsion bar 24 generates a force (torque) for returning to the original state when it is twisted, a force for returning to the arrow E direction is generated in the twisted half portion 24b. The force in the arrow E direction acts on the cover 6 as a reaction force when the cover 6 is rotated in the arrow C direction. Therefore, when the cover 6 is opened, the cover 6 slowly rotates in the arrow C direction. Move.

That is, if the hinge portion does not use a means such as a torsion bar 24 for generating a force that opposes the rotation in the direction of arrow C, the cover 6 is swung in the direction of arrow C. When the communication terminal is on the desk, the cover 6 violently collides with the desk, which may cause damage such as damage to the cover 6 or breakage of the internal board. Therefore, conventionally, a torsion bar has been used for the hinge portion of the cover. However, in the conventional communication terminal, as described above, the reaction force of the torsion bar is set so as to balance with the weight of the cover 6 including the handset 8, so that when the handset 8 is taken out from the cover 6. The balance is lost, and the cover 6 returns in the arrow E direction (closing direction). Therefore, as described above, there are problems that the operation feeling becomes poor and the operation is mistaken.

As a countermeasure against this, the reaction force in the arrow E direction is weakened by thinning the piano wire of the torsion bar 24 and the weight of the cover 6 from which the handset 8 is taken out is balanced to make the handset. Even if the cover 8 is taken out, the cover 6 can be prevented from returning in the arrow E direction. However, in this case, the reaction force becomes weak with respect to the cover 6 holding the handset 8 in a normal state, and when the cover 6 is rotated in the direction of the arrow C, it violently collides with a desk or the like, Almost the same problem as in the case of the hinge portion without the torsion bar as described above occurs. Therefore, in the communication terminal to which the present invention is applied, the force of the torsion bar 24 is maintained at an appropriate value sufficient to prevent the collision of the cover 6, and the handset 8
A stopper is provided which operates so as to prevent the cover 6 from returning in the direction of the arrow E when the is taken out.

In FIG. 6, the window 6 provided in the cover 6
b is a hole through which the stopper 26 in FIG. 7 projects. 7 and 8 are sectional views of the cover 6 taken along the thickness direction of the window 6b when the cover 6 is in the fully open position, and FIG. 7 shows when the handset 8 is held in the cover 6. 8 shows the state when the handset 8 is taken out from the cover 6.

In FIG. 7, the hook switch 20 is attached to the cover 6 by means not shown so as to be slidable only in the direction of arrow G and in the opposite direction, and one end thereof (right end in the drawing).
Has a substantially right triangle shape, and the triangular slope 20a
Is in contact with the slope 26b of the stopper 26 which is a separate member. The horizontal portion 20b of the hook switch 20 is the substrate 28.
The hook switch 20 is in contact with the upper micro switch 29, and the other end (the left end in the drawing) of the hook switch 20 has the groove 8 of the handset 8.
It is in contact with c. The stopper 26 is attached to the cover 6 by means not shown so as to be slidable only in the arrow F direction and in the opposite direction, one end of the stopper 26 becomes a substantially rectangular square portion 26a, and the other end of the stopper 26 is It is a triangular part of a substantially right triangle.

The inclined surface 26b of the triangular portion is in contact with the inclined surface 20a of the hook switch 20, and one end of the spring 27 is in contact with the vertical surface 26c of the triangular portion.
The other end of the spring 27 is in contact with the rib 6c of the cover 6. Therefore, the stopper 26 is urged by the spring 27 in the arrow F direction. At the position where the cover 6 is fully opened, the stopper 26 is attached to the cylindrical portion 2b of the first operation portion 2 on the main body side.
A groove 2d that fits into one end portion (rectangular portion) 26a. Therefore, next, the movements of the hook switch 20 and the stopper 26 will be described.

In FIG. 7, the stopper 26 is a spring 27.
When it is moved in the direction of arrow F by the urging force of the
The slope 20a of the hook switch 20 which is in contact with is moved in the direction of arrow G so that the apparent slope 26b rises.
That is, the biasing force of the spring 27 on the stopper 26 in the arrow F direction is a force for biasing the hook switch 20 in the arrow G direction. As shown in FIG. 7, when the handset 8 is held by the cover 6, the slope 26 of the stopper 26 is
The hook switch 20 biased in the direction of arrow G by b is held at the position shown in FIG. 7 by the groove 8c of the handset 8.

As shown in FIG. 7, when the handset 8 is stored and held in the handset holding portion 51 of the cover 6 and the hook switch 20 is at the position shown in the figure, firstly, the rectangular portion 26a of the stopper 26 is covered by the cover 6 2 does not protrude from the window 6b of the main body 2 and is not engaged (fitted) with the groove 2d of the first operation portion 2 on the main body side.
It becomes N and issues a LOW signal to the CPU 100,
This informs that the handset 8 is held by the cover 6, and the CPU 100 controls the handset 8 not to operate.

As described above, when the handset 8 is in the cover 6, the cover 6 is held in the fully open position in a state where the reaction force of the torsion bar 24 and the weight of the entire cover 6 are in balance with each other. Then, the stopper 26 is in a state in which it does not fulfill the function of blocking the rotation of the cover 6, and the handset 8 itself is in a state in which it does not function because the handset 8 has not been taken out from the cover 6.

Next, the case where the handset 8 is taken out from the cover 6 will be described with reference to FIG. In FIG. 8, since the handset 8 is taken out from the cover 6, the stopper 26 is moved by the urging force of the spring 27 in the direction of arrow F to the position shown in the figure (rotation blocking position of the cover 6) while pushing up the hook switch 20. To do. When the hook switch 20 is in the position shown in FIG. 8, first, one end portion (rectangular portion) 26a of the stopper 26 projects from the window 6b of the cover 6, and the square portion 26a is the first operation portion 2 on the main body side. By fitting (engaging) with the groove 2d, the cover 6 is held in the locked state in which the cover 6 is prevented from rotating at the fully open position. Secondly, the communication terminal to which the present invention is applied is in the state described below.

That is, the micro switch 29 is turned off.
Then, a high signal is issued to the CPU 100 to inform that the handset 8 has been removed from the cover 6.
Then, the CPU 100 makes the handset 8 operable by this HIGH signal and sets the sensitivity of the microphone portion 8b of the handset 8 to the low sensitivity side. The reason why the sensitivity of the microphone portion 8b is set to the low sensitivity side in this way is that since the handset 8 is held in the hand for conversation, the distance between the operator's mouth and the microphone portion is only about 5 cm, and the sensitivity is set to the high sensitivity side. This is because the voice that is too loud will be transmitted to the other party. At this time, since the hook button 7a of the second operation unit 7 is not pressed, the LOW signal is sent to the CPU 10
0, the CPU 100 sets the hook button 7a to LOW.
And the HIGH signal of the micro switch 29 are combined to set the sensitivity of the microphone portion 8b of the handset 8 to the low sensitivity side.

When one end (rectangular portion) 26a of the stopper 26 is fitted into the groove 2d as described in the first case, the cover 6 is prevented from rotating in the arrow E direction (returning direction = closing direction). Since the handset 8 is held at the fully open position in FIG. 8, the operator can obtain the same operation feeling as when the handset 8 is held by the cover 6, and the handset 8 is held by the operator as described in the second case. It will be possible to make a call comfortably by taking it to.

Further, in the first embodiment shown in FIGS. 7 and 8,
The hook switch 20 and the stopper 26 are formed by separate members, and the stopper 26 prevents the cover 6 from rotating by linking to the hook switch 20. However, as another embodiment (second embodiment), The switch 20 and the stopper 26 may be integrally formed of a single member, and the hook switch (stopper) may prevent the cover 6 from rotating. 9 and 10 show such a second
It is a schematic cross-sectional view showing an embodiment, and a second embodiment will be described with reference to these drawings.

FIG. 9 shows a state in which the handset 8 is stored and held in the handset holding portion 51 of the cover 6, and FIG.
0 indicates a state where the handset 8 is removed from the cover 6. In FIG. 9, the hook switch 20 is attached to the cover 6 by means not shown so as to be slidable only in the arrow G direction and the opposite direction, and a stopper (part) 26 is integrally formed at one end (right end in the drawing) of the cover 6. Has been done. On the horizontal portion 20b of the hook switch 20, the spring 2 mounted between the micro switch 29 on the substrate 28 and the inner surface of the cover 6 is provided.
One end of 7 is in contact. The other end (the left end in the drawing) of the hook switch 20 is in contact with the groove 8c of the handset 8.

As shown in FIG. 9, the handset 8 covers the cover 6.
9 is held by the groove portion 8c of the handset 8 in the low position in FIG. When the hook switch 20 is in the low position as shown in FIG. 9,
First, the stopper (part) 26 of the hook switch 20.
Does not protrude from the window 6b of the cover 6 and does not fit (engage) with the groove 2d of the first operation portion 2 on the main body side. Secondly, the micro switch 29 is turned on and the CPU 100 is set to LO.
It emits a signal of W, which causes the handset 8
Is held on the cover 6, and the CPU 10
0 controls the handset 8 not to operate.

As described above, when the handset 8 is in the cover 6, the cover 6 is held at the fully open position in a state where the reaction force of the torsion bar 24 and the weight of the entire cover 6 are in balance with each other. Then, the stopper (part) 26
Is in a state where it does not fulfill the function of blocking the rotation of the cover 6, and further, from the cover 6 to the handset 8
Is not taken out, the handset 8 itself is in a non-functioning state.

Next, the case where the handset 8 is taken out from the cover 6 will be described with reference to FIG. Figure 1
At 0, since the handset 8 is taken out from the cover 6, the hook switch 20 moves (raises) in the direction of arrow G to the position shown in FIG. 10 by the urging force of the spring 27. When the hook switch 20 is in the position shown in FIG. 10, firstly, the stopper (section) 26 integral with the hook switch 20 projects from the window 6b of the cover 6 and the groove of the first operation section 2 on the main body side. 2d is fitted (engaged) with each other, whereby the cover 6 is held in the locked state in which the rotation is blocked at the fully open position. Second, the microswitch 29 is OF
When it becomes F, it outputs a HIGH signal to the CPU 100 to notify that the handset 8 has been removed from the cover 6. Then, the CPU 100 makes the handset 8 operable by this HIGH signal and sets the sensitivity of the microphone portion 8b of the handset 8 to the low sensitivity side.

The reason why the sensitivity of the microphone 8b is set to the low sensitivity side is that the handset 8 is held in the hand for conversation, and the distance between the operator's mouth and the microphone is only about 5 cm, which is high. This is because if it is set to the sensitivity side, a too loud voice will be transmitted to the other party. At this time, the hook button 7a of the second operation unit 7 is not pressed, so L
The OW signal is sent to the CPU 100, and the CPU 100 sends the LOW signal of the hook button 7a and the micro switch 29.
The sensitivity of the microphone portion 8b of the handset 8 is set to the low sensitivity side by the combination of the HIGH signals.

When the stopper (portion) 26 is fitted into the groove 2d as described in the first case, the cover 6 is prevented from rotating in the direction of arrow E (returning direction = closing direction).
Is held in the fully open position, the operator can feel the same operation as when the handset 8 is held by the cover 6, and as described in the second case, the handset 8 is held.
It becomes possible to hold in the hand and make a call comfortably.

FIG. 11 is a truth table of the hook button 7a and the micro switch 29, and FIG. 12 is a block diagram for explaining the sensitivity switching operation of the microphone section 8b depending on the combination of the signals in FIG. Here, FIG.
1 and FIG. 12, the microphone section 8 of the handset 8
The switching of the sensitivity of b will be described.

In FIG. 11, the state 6 is a state in which the handset 8 is held by the cover 6 and the hook button 7a is not pushed, that is, the operator is not busy making a call, and the cover 6 is normally closed. ing. In this state, the CPU 100 of FIG.
The handset 8 is not operated by the W signal and the LOW signal of the microswitch 29.

In the state shown in FIG. 11, the handset 8 is taken out from the cover 6 and the hook button 7a is not pushed, that is, the operator holds the handset 8 in his hand to make a call. It is in a state. In this state, since the microphone portion 8b of the handset 8 is located near the mouth of the operator, the sensitivity of the microphone portion 8b needs to be on the low sensitivity side. Therefore, the CPU 100 of FIG.
Switches the switch unit 123 to the amplifier unit 122 having the gain G2 on the low sensitivity side by the LOW signal of the hook button 7a and the HIGH signal of the micro switch 29,
The handset 8 is put into an operating state (operating state).

The state shown in FIG. 11 is a state in which the hook button 7a is pressed while the handset 8 is held by the cover 6, that is, the operator wants to talk without holding the handset 8 in his hand. In this state, since the microphone portion 8b of the handset 8 is away from the mouth of the operator, the sensitivity of the microphone portion 8b needs to be on the high sensitivity side.
Therefore, the CPU 100 of FIG. 12 sets the switch unit 123 to the high-sensitivity side gain G1 by the HIGH signal of the hook button 7a and the LOW signal of the microswitch 29.
The amplifier unit 121 is switched to and the handset 8 is activated.

The state in FIG. 11 is a state in which the handset 8 is taken out from the cover 6 and the hook button 7a is pressed, that is, the operator holds the handset 8 in his hand and talks while talking. Is to be heard by the external speaker 10. In this state, since the microphone portion 8b of the handset 8 is brought close to the mouth of the operator, the sensitivity of the microphone portion 8b needs to be on the low sensitivity side. Therefore, the CPU 100 of FIG. 12 uses the HIGH signal of the hook button 7a and the HI of the micro switch 29.
According to the GH signal, the switch unit 123 is switched to the amplifier unit 122 having the gain G2 on the low sensitivity side, and the handset 8 and the external speaker 10 are operated.

As described above, the microphone section 8 of the handset 8
Although the sensitivity switching of b has been described, the truth table of FIG. 11 and the block diagram of FIG. 12 show an example, and it is easy to realize another embodiment in which the same effect is obtained.
For example, even in a communication terminal having a configuration in which the external speaker 10 is omitted from the communication terminal shown in FIG.
It is possible to configure a communication terminal that can achieve the same effect as the embodiment described in. FIG. 13 shows the external speaker 10 in FIG.
15 is a schematic perspective view showing a configuration of a main part of a communication terminal in which is omitted, FIG. 14 is a truth table of the embodiment of FIG. 13, and FIG.
FIG. 14 is a block diagram of the embodiment of FIG. 13.

Therefore, referring to FIGS. 13 to 15, FIG.
An example in which the external speaker 10 is omitted from this example will be described. The main purpose of the external speaker 10 is to emit a calling tone to inform the operator that a call has been received.
If the receiver unit 8a of FIG. 2 emits, the external speaker 10 can be omitted, and the cost of the communication terminal body can be reduced.

Therefore, as shown in FIG. 13, an opening 39c is provided on the side of the handset 39 facing the receiver 39a.
The cover 38 is also provided with an opening 38a at a position facing the opening 39c of the handset 39. As a result, the cover 38 is normally closed when waiting for a call as shown in FIG. 13. However, even if a call is received in this state, the calling tone from the receiver section 39a of the handset 39 is not opened in the handset 39. The operator can easily hear the sound through the portion 39c and the opening 38a of the cover 38. When the operator finds that the telephone is received, he first opens the cover 38, and then the handset 3
9 is taken out from the cover 38 to make a call, or the hook button 7a provided on the cover 38 is pushed to make a call without taking out the handset 39 from the cover 38. .

However, when the above-mentioned handset 39 is taken out to make a call, the receiver portion 39c of the handset 39 emits a volume that can be heard by an operator who is far away. is there. In addition, by pressing the hook button 7a described above, the handset 39
When making a call without removing the handset, if the sensitivity of the microphone part 39b of the handset 39 is low as when calling with the handset 39 taken out, the other party's voice can be heard from the receiver part 39a. Will be difficult to communicate to the other party. Therefore, in the embodiment of FIG. 13, the receiver section 39a of the handset 39 is combined with the signal of the hook button 7a and the signal of the microswitch 29.
It is configured to switch between the volume of and the sensitivity of the microphone unit 39b.

In the truth table of FIG. 14, the combination of the LOW signal of the hook button 7a and the LOW signal of the microswitch 29 indicates that the handset 39 is held by the cover 38 and the hook button 7a is pressed. The cover 38 is normally closed, i.e., the operator is holding the telephone. In this state, the CPU 100 in FIG.
LOW signal and the LOW signal of the microswitch 29, the switch unit 126 is switched to the amplifier unit 124 of the gain G3 which is on the high volume side, and only the receiver unit 39a is controlled to operate at high volume.

In the state shown in FIG. 14, the handset 39 is taken out from the cover 38 and the hook button 7a is not pushed, that is, the state of a normal telephone call operation in which the operator holds the handset in his hand to make a call. Is. In this state, the receiver 39a and the microphone section 39b of the handset 39 are located close to the operator, so the volume of the receiver section 39a needs to be on the low volume side and the sensitivity of the microphone section 39b needs to be on the low sensitivity side. Therefore, the CP in FIG.
U100 receives the LOW signal from the hook button 7a and the HIGH signal from the microswitch 29, and the switch unit 1
26 is switched to the amplifier section 125 having the gain G4 on the low volume side, and the switch section 129 is switched to the amplifier section 128 having the gain G6 on the low sensitivity side to control the handset 8 to operate.

The state in FIG. 14 is a state in which the hook button 7a is pressed while the handset 39 is held by the cover 38, that is, the operator wants to talk without holding the handset 39 in his hand. In this state, the receiver section 39a and the microphone section 39b of the handset 39 are located away from the operator, so the volume of the receiver section 39a needs to be high and the sensitivity of the microphone section 39b needs to be high. . Therefore, the CPU 100 in FIG.
By the HIGH signal of the hook button 7a and the LOW signal of the micro switch 29, the switch unit 126 is switched to the amplifier unit 124 of the gain G3 which is the high volume side, and the switch unit 129 is the amplifier unit of the gain G5 which is the high sensitivity side. Switch to 127 and activate the handset 8.

In the state shown in FIG. 14, the handset 39 is taken out from the cover 38 and the hook button 7a is released.
Is pressed. In this state,
If the external speaker 10 is provided as in the embodiment described above, while the operator holds the handset 39 in the hand and talks, the operation is performed such that the conversation is heard by the external speaker 10 in the surroundings. As described above, the external speaker is omitted for cost reduction. Therefore, when such an operation is performed, the operator operates the handset 3 in this embodiment.
This is a normal call operation in which a user holds 9 to make a call. Therefore, since the receive section 39a and the microphone section 39b of the handset 39 are close to the operator, the receiver section 3
It is necessary to set the volume of 9a to the low volume side and the sensitivity of the microphone section 39b to the low sensitivity side.

Therefore, in the state shown in FIG.
The CPU 100 in the inside controls the switch unit 126 by the HIGH signal of the hook button 7a and the HIGH signal of the micro switch 29 to switch the switch unit 126 to a low-gain amplifier unit 12 having a gain G4.
At the same time as switching to 5, the switch unit 129 is switched to the amplifier unit 128 of the gain G6 on the low sensitivity side, and the handset 8 is operated. Further, in the operation in such a state, the conversation cannot be heard to the surroundings, but in the operation in the above-described state, the operator sets the handset 39.
Since the call is made without the speaker, the conversation can be heard sufficiently in the surroundings in this state, and there is no problem even if the external speaker is not provided.

As described above with reference to FIGS. 13 to 15,
Handset 39 without external speaker
The switching of the volume of the receiver section 39a and the sensitivity of the microphone section 39b has been described, but the truth table of FIG. 14 and the block diagram of FIG. 15 show an example, and similar effects are obtained by other various embodiments. It is obvious that is easily realized.

Next, a holding mechanism for storing and holding the handset in the cover and a hook mechanism for locking the cover to the communication terminal body 1 will be described with reference to FIGS. 16 to 19. 16 is a schematic perspective view showing a state in which the handset of the conventional cover 30 is removed, and FIG. 17 is FIG.
FIG. 17 is a schematic cross-sectional view showing a state of the cover 30 holding the handset 33 along a line 17-17 in the inside.

16 and 17, the cover 30
Includes a leaf spring 31 for holding the handset 33,
32 and a hook 9 for locking the cover 30 to the first operation unit 2 on the main body side (in the closed position).
Each of the leaf springs 31 and 32 is formed with an arc portion protruding from the square windows 30a and 30b of the cover 30. 17 shows the square window 30a and the leaf spring 31 on one side, and the square window 30b and the leaf spring 3 on the other side.
2 is not shown, they have substantially the same configuration on either side, and in the following description only the configuration on one side will be described for the sake of brevity.

FIG. 17 is a sectional view taken along the alternate long and short dash line 17-17 passing through the leaf spring 31 on one side, the square window 30a and the hook 9 in FIG. In FIG. 17, the cover 30 stores and holds the handset 33.
3 is a cutout 3 into which the arcuate portion 31a of the leaf spring 31 is inserted.
3a and the circular arc portion 32a of the leaf spring 32 not shown in FIG.
A cutout portion 33b is formed to allow the entry. Leaf spring 31
The horizontal portion 31c of the leaf spring 32 is the same as that of the leaf spring 32. The horizontal portion 31c is fixed to the cover 30 by means not shown.
1a is swingable in the directions of arrows I and J with the intersection 31b of the horizontal portion 31c and the vertical portion serving as a fulcrum.

Therefore, when the handset 33 is put into the cover 30, the circular arc portion 31a of the leaf spring 31 once swings in the direction of the arrow J and then as shown in FIG.
The handset 33 is urged in the direction of arrow I by coming into contact with the notch 33a. Arc part 32 of leaf spring 32 not shown
Similarly, a also biases the handset 33 in the direction of arrow I, and the handset 33 is held in the handset holding portion of the cover 30 by these two leaf springs.

Further, the hook 9 for locking the cover 30 to the first operation portion 2 on the main body side is rotatable at the ear portion 9d with the shaft 34 fixed to the groove portion 30c of the cover 30 as a fulcrum. It is pivotally supported. And this hook 9
Is held in the position shown in FIG. 17 by being urged in the direction of arrow L by the torsion coil spring 35 attached to the shaft 34, and the one end 9e of the hook 9 abutting on the step 30d of the cover 30. ing. When the cover 30 is closed by the operator rotating the cover 30 in the direction of arrow A, first, the inclined portion of the claw shape 9a of the hook 9 contacts the end face corner portion 2f of the first operation portion 2 on the main body side. The hook 9 rotates in the arrow K direction against the biasing force of the torsion coil spring 35.

When the cover 30 comes into contact with the first operation section 2 on the main body side (when it comes to the closed position), the claw shape 9a enters the groove 2c, and the hook 9 has its tip 9e stepped on the cover 30. The cover 30 is in the initial state of contacting the portion 30d, and the cover 30 is locked in the closed state by the first operation portion 2 on the main body side. To release the lock, push the back portion 9b of the hook 9 to move the claw shape 9a in the direction of arrow K.
0 becomes rotatable in the arrow C direction.

In the conventional cover 30 shown in FIGS. 16 and 17, as described above, the biasing members (leaf springs) 31 and 32 for generating the biasing force for holding the handset 33 on the cover 30, and the covers. Since the urging member (torsion coil spring) 35 for obtaining the urging force of the hook 9 for locking the 30 in the closed position is formed by separate independent members, the structure becomes complicated and the cost becomes high. Was there. Therefore, in the communication terminal to which the present invention is applied, the biasing member for holding the handset on the cover and the biasing member for locking the cover at the closed position are made into one common member, that is, the cover. By adopting a configuration in which the biasing member for biasing the lock member for locking the handset to the communication terminal body also serves as the biasing force generating member required to hold the handset on the cover, the structure is simplified and the cost is reduced. Down is planned.

An embodiment of the communication terminal in which the urging member for holding the handset and the urging member for the cover lock are shared in this way will be described with reference to FIGS. 18 and 19. Figure 1
8 shows the first embodiment, and FIG. 19 shows the second embodiment.
In FIG. 18, a hook 9 for locking the cover 6 to the first operation unit 2 on the main body side is
A shaft 34 fixed to the cover 6 is pivotally supported about a fulcrum. The hook 9 is urged in the direction of the arrow L by the torsion coil spring 35 attached to the shaft 34, and one end 9e of the hook 9 abuts on the stepped portion of the cover 6, as shown in FIG. Held in position.

That is, one end of the torsion coil spring 35 of the first embodiment shown in FIG. 18 abuts on the hook 9 as in the conventional example shown in FIG. 17, and biases the hook 9 in the direction of arrow L.
Therefore, in this embodiment, the torsion coil spring 3 is used.
The other end of 5 abuts on the rear end surface of a top 36 that is fitted and held so as to be movable in the horizontal direction in the figure, and biases the top 36 in the direction of arrow M.

The frame 36 is the window (opening) 6 of the cover 6.
It is held slidably in the horizontal direction at c, and its tip arc portion 36a abuts the notch portion 8c of the handset 8, and the handset 8 is stored and held in the handset holding portion 51 by the urging force in the direction of the arrow M. ing. In this embodiment,
The biasing member for the cover lock and the biasing member for holding the handset are formed by one (common) member called the torsion coil spring 35, and are configured to engage and hold the handset 8 via the top 36. There is. That is, in this embodiment, the urging force of the cover-locking urging member 35 causes the holding member 3 for holding the handset 8 on the cover 6.
It is configured to act on 6.

In FIG. 18, when the handset 8 is taken out of the cover 6 or put in the cover 6,
Since the tip of the top 36 has an arc shape 36a,
The top 36 can be smoothly slid in the direction of the arrow M and in the opposite direction, and the cover 6 of the handset 8 can be slid.
It can be easily moved in and out with respect to simple operations such as pulling out and pushing. In addition, the frame 36
Considering the sliding with the handset 8, the material of
A material having a small friction coefficient and abrasion resistance (for example, polyacetal) is used.

Next, a second embodiment will be described with reference to FIG. In the second embodiment, the torsion coil spring 3 described above is used.
Instead of 5 and the top 36, a single member leaf spring 37 is used. In FIG. 18, a hook 9 for locking the cover 6 to the first operation unit 2 on the main body side is rotatably supported by a shaft 34 fixed to the cover 6 at its ear 9d. There is. The hook 9 is biased in the direction of the arrow L by the leaf spring 37 attached to the shaft 34, and the one end 9e of the hook 9 abuts on the stepped portion of the cover 6, as shown in FIG. Held in position.

One end of the leaf spring 37 is a biasing portion that abuts the hook 9 and biases the hook 9 in the direction of arrow L, and the other end abuts the notch 8c of the handset 8 and the handset. Arc part 37 for urging 8 in the direction of arrow M
It is a. In other words, in this embodiment, the cover locking biasing member and the handset holding biasing member are integrally formed by one (common) leaf spring 37.
That is, in this embodiment, the biasing member 37 for the cover lock is used.
The urging force of is adapted to act directly on the handset 8 to hold it on the cover 6.

When the handset 8 is taken out or put in from the cover 6, the arc portion 3 of the leaf spring 37 is used.
Since 7a has an arcuate shape, the arcuate portion 37a can be smoothly elastically displaced in the direction of arrow M and in the opposite direction, and the handset 8 can be easily taken in and out with respect to the cover 6 by a simple operation of pulling out and pushing in. It can be carried out.

As is clear from the above, in the conventional example, the biasing members 31 and 32 for holding the handset and the biasing member 35 for the cover lock are separately provided, but in the first embodiment of FIG. By using the coil spring 35 and the top 36, and using only the leaf spring 37 in the second embodiment of FIG. 19, one urging member (urging member) also serves as both urging members (urging member). Is configured.

That is, according to the embodiment described with reference to FIGS. 18 and 19, the biasing member for holding the handset 8 on the cover 6 and the biasing member for the hook 9 for locking the cover 6 in the closed position are common. One member 35 or 37, that is, the biasing members 35 and 37 for biasing the lock member 9 for locking the cover 6 to the communication terminal body 1.
However, since it is configured to also serve as a biasing force generating member required to hold the handset 8 on the cover 6, the structure is simplified and the cost is reduced as compared with the conventional example shown in FIGS. 16 and 17. It has become possible to plan.

[0090]

As is apparent from the above description, according to the first aspect of the invention, the cover for protecting the first operation section and / or the display section provided on the communication terminal main body has the second operation. In the communication terminal which is provided with a handset holding part and makes a call and / or data transmission using a line, the cover cannot be rotated by the cover rotation preventing means when the handset is taken out from the cover. When a balance torsion bar is used for the part, even if the handset is taken out from the cover, it is possible to prevent the cover from floating from the desk, etc. Furthermore, the movement of the cover when pushing the operation button can be prevented. (EN) Provided is a communication terminal which can be prevented and can eliminate problems such as a bad operation feeling and an operation error.

According to the inventions of claims 2 and 3,
In addition to the above configuration, the cover rotation preventing means is linked to a hook switch for detecting whether or not the handset is held by the cover. Furthermore, the cover rotation preventing means holds the handset by the cover. Since it is a hook switch that detects whether or not
A communication terminal that can achieve the above effects more efficiently is provided.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a state in which a cover of an embodiment of a communication terminal to which the present invention is applied is opened.

FIG. 2 is a block diagram showing signal exchange of the communication terminal of FIG.

FIG. 3 is a schematic perspective view showing a state of the communication terminal of FIG. 1 during transportation.

FIG. 4 is a schematic perspective view showing a state in which the communication terminal of FIG. 1 is mounted on a vehicle and a mobile phone is connected and used.

FIG. 5 is a schematic exploded perspective view showing a state of the hinge part when the cover of the communication terminal according to the embodiment of the present invention is closed.

6 is a schematic exploded perspective view showing a state of a hinge portion when the cover of the communication terminal of FIG. 5 is opened.

FIG. 7 is a schematic cross-sectional view showing a state in which a cover of an embodiment of a communication terminal to which the present invention is applied is opened and a handset is held.

8 is a schematic cross-sectional view showing a state when the handset is taken out from the state of FIG.

FIG. 9 is a schematic cross-sectional view showing a state in which the cover of another embodiment of the communication terminal to which the present invention is applied is opened and the handset is held.

FIG. 10 is a schematic cross-sectional view showing a state when the handset is taken out from the state of FIG.

FIG. 11 is a truth table of hook buttons and micro switches in an embodiment of a communication terminal to which the present invention is applied.

FIG. 12 is a block diagram showing a control system for switching sensitivity of a microphone unit by a combination of respective signals in FIG.

FIG. 13 is a schematic exploded perspective view showing a communication terminal to which the present invention is applied and an external speaker is omitted.

FIG. 14 is a truth table of hook buttons and micro switches in the communication terminal of FIG.

FIG. 15 is a block diagram of a control system for volume switching of the receiver section and sensitivity switching of the microphone section by a combination of the signals in FIG.

FIG. 16 is a schematic perspective view showing a configuration example of a cover of a conventional communication terminal.

17 is a sectional view showing a hook urging means and a handset holding means of the cover of FIG.

FIG. 18 is a schematic cross-sectional view showing a handset holding state of the cover of the communication terminal to which the present invention is applied according to the first embodiment.

FIG. 19 is a schematic cross-sectional view showing a state where the cover of the communication terminal according to the present invention is held by the second embodiment.

[Explanation of symbols]

 1 Communication Terminal Main Body 2 First Operation Unit on Main Body Side 3 Image Display Means (LCD) 4 Numeric Keypad 5 IC Card Insertion Port 6 Cover 7 Second Operation Unit on Cover Side 7a Hook Button 8 Handset 8a Receiver 8b Microphone 9 Hook (for Cover Lock) 10 External Speaker 14 Handle 18 IC Card 19 Image Data 20 Hook Switch 22 Mobile Phone 24 Torsion Bar 25 Axis 26 Stopper 27 Spring 28 Board 29 Micro Switch 34 Axis 35 Biasing Member (Torsion Coil Spring) 36 Handset holding member (frame) 37 Leaf spring 37a Arc part 38 Cover 38a Voice opening 39 Handset 39a Receiver 39b Microphone 39c Open 51 Handset holding 100 CPU 102 Image processor 115 Switch 123 Switch part 126 Switch part 129 Switch part

Claims (3)

[Claims] 1. A second operation part and a handset holding part are provided on a cover for protecting the first operation part and / or the display part provided on the communication terminal main body, and a call and / or data is transmitted using a line. A communication terminal for transmitting, characterized in that, when the handset is taken out from the cover, the cover cannot be rotated by the cover rotation preventing means. 2. The communication terminal according to claim 1, wherein the cover rotation preventing means is linked to a hook switch for detecting whether or not the handset is held by the cover. 3. The communication terminal according to claim 1, wherein the cover rotation preventing means is a hook switch for detecting whether or not the handset is held by the cover.