JPH0964778A - Portable telephone set structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable telephone set structure excellent in electrical characteristics, design performance and productivity, low in cost and high in performance. SOLUTION: This structure is decidedly formed by an openable/closable flip part 9 having rotary axes 13a and 13b at the both ends, incorporated with a coiled antenna 12 in which a part of the tip is formed into a coil-shape and an other tip is formed into a bar-shape, protecting an operation part surface and further, preventing the infiltration of ambient noise into a talking port part 2 at the time of opening a telephone set, the talking port part 2 an ear piece part 3, a display part 14, a battery part 4, a main circuit part 5 and a grip part 15 integrally storing a button operation part 6. The flip part 9 has rotary axes 13a and 13b on its both sides. Between rotary axes 13a and 13b, the transmitting port part 2 formed on the tip part of the grip part 15 is arranged. In the flip part 9, a flip flop protruding part 16 is released by depressing a lock release button 10 and further, is opened and help up the a fixed angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal device, and more particularly, to an antenna housing structure of a mobile phone body and ambient noise preventing structure characteristics.

[0002]

2. Description of the Related Art As a first example of a conventional portable telephone structure, for example, there is a technique disclosed in Japanese Utility Model Laid-Open No. 4-128440. This first conventional example is shown in FIG.
As shown in FIG. 3, a foil antenna is used which is laid in a meandering manner in a handset (corresponding to the flip portion of the present invention) in which the antenna portion is hinged so as to be foldable. Furthermore, a transmitter is provided at the tip of the foil antenna.

In the structure of the portable telephone seen in the first conventional example, a foil-shaped antenna that meanders the built-in antenna is costly as a material and a manufacturing method and lacks in productivity.

For example, a conventional foil antenna must use a metal material which is a thin plate material, a flexible printed circuit board or the like. Therefore, the material cost or the processing cost is increased. Further, the size and shape of the foil-shaped antenna are likely to be restricted by the design of the flip portion, and it may be difficult to meet the electrical conditions.

Further, since the transmitter section is provided at the tip of the foil antenna, the problem of electrical interference with the foil antenna due to a cable or the like for electrically connecting the transmitter section and the circuit body is eliminated. It contains possible elements.

Further, since the transmitter section is provided at the tip of the flip section, it is not possible to form a protective wall against ambient noise from the mouthpiece section depending on the operating environment. In other words, the user cannot form a protective wall against ambient noise due to the surrounding environmental conditions at the time of use, especially in a crowded place or a place with a lot of transportation such as a car or train, and the external noise is transmitted along with the voice. It is easier to collect sound than the mouthpiece. In other words, the user cannot select the communication state depending on the use environment condition, and is forced to use in a state where the communication characteristic is bad.

As a second conventional example, Japanese Patent Laid-Open No. 4-36802
The technique disclosed in Japanese Patent No. 3 can be cited. The second conventional technique is a small communication device including a lid body made of an insulating material whose base end is pivotally supported so as to be foldable with respect to the housing. The lid body covers the front surface of the housing. A flat antenna having a predetermined pattern is formed on the lid while being rotatable and supported between the folded posture and the extension beyond the extension line of the housing so as to be lockable at an arbitrary angle. It is an antenna structure of a small communication device.

[0008]

As described above, since the mobile phone structure disclosed in the first conventional example is a foil antenna, the material is likely to be limited and the manufacturing cost is increased. There are many factors. In addition, it was necessary to consider that the foil antenna would not be bent or damaged even when it was installed on the assembly line of the main body. Therefore, when productivity is taken into consideration, the mass production effect is impaired and the overall structure becomes very expensive.

Further, even when considering the design, if a flip design that matches the design of the mobile phone body is to be adopted, the foil antenna dimension and shape are first set from the electrical characteristics, and the design proposed by the designer can be adopted. There is a risk of an unbalanced design, and it is a structure that greatly restricts the design.

Further, since the transmitter section is adjacent to the foil antenna, there is a possibility that a table for electrically connecting the transmitter section and the main body circuit section and the foil antenna may cause an electric interference problem. is there. Furthermore, since the transmitter part is provided at the tip of the flip, noise can be easily picked up from the outside, which may adversely affect the call performance. In other words, it includes issues such as lack of consideration for the user's usage status and usage environment.

The antenna disclosed in the second prior art is a patterned planar antenna, and is the first antenna described above.
It has the same problem as the antenna shown in the conventional example.

The present invention has been made in view of the above-mentioned conventional circumstances. Therefore, the object of the present invention is to solve the problems inherent in the conventional mobile phone structure, namely, (1) increase in material / processing cost and productivity. Low price with excellent design and productivity that can solve various problems such as deterioration, (2) design restrictions, (3) electrical interference problem, deterioration of call performance, etc.
It is to provide a novel mobile phone structure having high performance.

[0013]

In order to achieve the above object, in a mobile phone structure according to the present invention, a mobile phone body has a flip part having rotating shafts at both ends, a part of the tip of which is coiled and the other end. Has a coil-shaped antenna formed in the shape of a rod, protects the operation part surface, and can open / close the flip part to prevent ambient noise from entering the mouth part when the flip part is opened, and the mouth part. And a grip part for accommodating the earpiece part, the display part, the battery part, the main circuit part, and the button operation part, and the flip part opening / closing lock release button is formed on the side surface of the main body of the grip part. ,
A flip lock unit is provided below the display unit.

The flip portion is provided with a coil-shaped built-in type antenna portion having a rotating shaft on both sides, and a part of the tip is coil-shaped and the other end is bar-shaped on the outer circumference. , Rotation and flip part holding function, and a fitting structure capable of accommodating a cable for electrically connecting the antenna part and the main circuit part.

In the flip portion, the flip lock convex portion is released by pressing the flip portion lock release button, and the flip portion is held open by a coil spring up to a certain angle. The antenna environment is exposed, and the antenna environment is set so that a transmission / reception state with higher sensitivity is formed.

[0016]

According to the present invention, the built-in antenna can be used as a normal wire rod for a spring by forming a part of the tip of the built-in antenna into a coil shape and the other end into a rod shape. Therefore, a general method for manufacturing a coil spring can be applied, and it is possible to realize small size and low cost with excellent mass productivity.

Further, since the built-in antenna structure according to the present invention has a combination of a coil shape and a rod shape, it is very simple and can be miniaturized, so that it is easy to assemble and the productivity can be improved. It can also be stored and mounted in a part of the flip part. From this, it is possible to provide a high-quality design that does not impair the design of the mobile phone body without restricting the design of the flip portion.

Furthermore, by mounting the mouthpiece (speaker) on a part of the grip body instead of the flip part, a cable for electrically connecting the transmitter and the electric circuit of the main body is built in the antenna. It is possible to prevent electrical interference between the cable and the built-in antenna without being adjacent to.

Further, since the flip portion is located around the front of the transmitter portion, it becomes possible to also serve as a protective wall for preventing ambient noise from being bounced back and mixed.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiment of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1 is a perspective view in a state in which a flip portion is closed, and FIG. 2 is a perspective view in a state in which the flip portion is opened.

With reference to FIGS. 1 and 2, a portable telephone main body 1 according to the present invention has a mouthpiece section 2 for a sender side to transmit a voice to a communication partner and a reception signal from the partner as voice. Liquid crystal display 14 for the user to check the status of the mobile phone, such as the earpiece part 3 to transmit and the display of the usage status, or the display of the standby status, and the power supply from the telephone line or the outlet for carrying Therefore, the battery section 4 is mounted, the main circuit section 5 for controlling various electric signals, the button operation section 6 for executing various operations, the incoming call lamp section 7 for notifying the incoming call by lighting or blinking the LED, A sounder unit 8 for sounding the incoming call,
Further, a lock release button 10 for opening the flip portion 9 from the closed state, a grip portion 15 for accommodating the flip lock convex portion 16 for maintaining the flip portion 9 in the closed state, a voice signal and the like inside the outer periphery. It is divided and formed from two parts of a protective flip part 9 which houses a built-in antenna part 12 for transmitting and receiving and which has rotating shafts 13 (13a, 13b) at both ends which can be opened and closed by rotation.

As shown in the exploded perspective view of FIG. 4, the flip portion 9 has a box-shaped outer case portion 9a that forms the outer appearance and a back cover portion that can be fitted inside the outer case portion 9a. It has a two-piece structure of 9b. The grip 15
By pushing inward the lock release button 10 provided on the side of the flip lock convex portion 16 formed integrally with the lock release button 10 arranged substantially in the center of the grip portion 15 in the lateral direction. By sliding and releasing the lock receiving concave portion 9c having a shape corresponding to the flip lock convex portion 16 provided at the substantially central portion of the tip of the outer case portion 9a of the flip portion 9, the flip portion 9 is released. The grip portion 15 is open at a constant angle.

The lock release button 10 is provided with a coil spring 10a therein, so that the lock release button 10 is self-recovered after being pressed and returned to the initial position.

Of the rotary shaft parts 13 (13a, 13b) provided at both ends of the flip part 9, one rotary shaft 13a is equipped with a torsion coil spring 11 for generating a rotational force. There is. The twisted coil spring 11
One end 11a is fixed to a part of the mouthpiece portion 2 on the grip portion 15 side, and the other end 11b is fixed to the flip portion 9, and the torsion coil spring 11 urges the flip portion 9 in the opening direction at all times. Has been done. Further, the other rotating shaft portion 13b
Is provided with an angle adjusting piece 17 having a keyhole shape for maintaining and fixing at a rotation angle suitable for protecting ambient noise and the like in terms of communication quality when the flip portion 9 is opened.

The angle adjusting piece 17 is formed by a circular portion 17a and a raised portion 17b. A small-diameter concave portion 19a and a large-diameter concave portion 19a into which the circular portion 17a and the raised portion 17b of the angle adjusting piece 17 are fitted are formed at the end face portion of the mouthpiece portion 2 facing the angle adjusting piece 17 formed on the rotating shaft 13b. A radial recess 19b is formed. As the length of the circumferential surface of the small-diameter concave portion 19a is smaller and the length of the large-diameter concave portion 19b is larger, the opening angle θ1 of the flip portion 9 shown in FIG. 3 with respect to the grip portion 15 is larger. Diameter recess 19
By changing the length of the inner peripheral surface of b, the grip portion 1
It is possible to set the opening angle θ1 of the flip portion 9 with respect to 5 to a desired value.

On the side of the rotary shaft 13a on which the torsion coil spring 11 is mounted, one end of the built-in antenna 12 is electrically connected to the main circuit portion 5 provided in the grip portion 15, so that a connection cable is formed. A through hole 18 is formed to pass through.

Left and right rotary shafts 13a, 1 of the flip portion 9
The inner dimension of 3b matches the width dimension of the mouthpiece portion 2, and is set so that when the flip portion 9 is desired to be rotated, the grip portion 15 and the flip portion 9 rotate smoothly without interference. Has been done. Rotating shaft 13 of the flip part 9
Each of a and 13b is formed in a circular shape except for a connecting portion with the outer case 9a.

Both side surfaces near the grip portion button operation portion 6 are stepped side walls 20 that match the rotation axis of the flip portion 9 having the two-step shape of the mouthpiece 2. In the stepped side wall 20, the front surface side of the button operation portion 6 is the flip portion 9
The flip portion 9 is opened by being formed to have a dimension that matches the inner dimension of the rotating shaft of the above, and has a dimension that matches the outer dimension of the flip portion 9 from the position that is reduced by the thickness dimension near the tip of the rotating shaft. After that, when the rotation angle that is normally used is further intentionally rotated, the rotation angle is prevented from being substantially horizontal.

In the antenna incorporated in the flip part 9 according to the present invention, the shape of the antenna 12 is integrally formed with a coil-shaped part 12a at one end and a bar-shaped part 12b at the other end. The total length including the coil diameter or the number of turns of the coil-shaped portion 12a and the length of the rod-shaped portion 12b is determined by the frequency band of the mobile phone used.
One end of the rod-shaped portion 12b opposite to the coil-shaped portion 12a passes through the inside of the rotary shafts 13a and 13b (including the through hole 18) for allowing the flip portion 9 and the main body of the grip portion 15 to rotate and is electrically connected. Purposely connected to the main circuit section 5.

Further, in the structure in which the mouthpiece portion is provided at the tip of the conventional flip portion as shown in the above-mentioned first conventional example, depending on the environment of use, the noise may be transmitted to prevent the entry of ambient noise. It was often seen that the area around the mouth was covered with a hand. Furthermore, if the distance between the mouthpiece and the mouth is large at the distance between the user's ears and the mouth, it is psychologically uncertain whether or not one's voice clearly reaches the other party. There are some cases. By providing a wall at the mouth with the flip portion 9 in a pseudo manner, this provides a sense of security similar to that of an ordinary handset.

In the mobile phone structure according to the present invention, the grip portion 15 and the flip portion 9 are closed in the initial state, and the surfaces thereof are substantially the same plane. Therefore, the rotary shafts 13a and 13b of the flip portion 9 are in a state of being adjacent to both outer side surfaces and the bottom surface of the button operation portion 6, and the grip portion 15 and the flip portion 9 are at first glance a rectangular parallelepiped having an integrated structure. It is the most compact in size and has excellent portability. Further, the flip unit 9 normally causes the button operation unit 6 to operate.
Since the button is blocked, erroneous operation of the button is eliminated, and when the character is worn in a pocket or when it is worn by rubbing the button surface due to mixing with documents etc. in the bag It also helps prevent problems.

In the actual use, when the flip portion 9 is opened, as shown in FIG. 3, the opening angle θ1 is normally the same as in the case of a handset of a general telephone.
The ideal angle between the mouthpiece 2 and the earpiece 3 is around 148 degrees, and the ideal distance between the mouthpiece 2 and the earpiece 3 is around 145 mm. Further, the structure of the mobile phone according to the present invention is to provide a good call characteristic by reducing the ingress of ambient noise by forming the protective wall of the mouthpiece part 2 by the flip part 9 during a call. It goes without saying that depending on the environment, it is possible to make a sufficient call even when the flip unit 9 is not opened. Therefore, the mouthpiece section 2 is set to be exposed with the flip section 9 closed. Therefore, even if the flip unit 9 is used in the most compact size without being opened, it does not hinder the call depending on the usage environment.

[0034]

As described above, according to the present invention,
By adopting an integrally formed antenna part with a part of the coil inside the outer circumference of the flip that can be opened and closed and a rod at the other end, production cost is reduced by simplifying assembly work and material cost of parts. It is possible to realize a high-quality design by improving the design and removing the design constraint of securing a surplus space in the flip section by the compact shape and simplification of the built-in antenna.

Further, according to the present invention, the possibility of characteristic deterioration due to electrical interference is eliminated by mounting the transmitter section on a part of the grip body and separating it from the antenna built in the flip section. are doing.

Further, according to the present invention, when the flip section is opened, the surrounding side of the transmitting section is set so that ambient noise is reflected on the back side of the flip section and transmitted to the mouth during a call. In order to prevent ambient noise from jumping into the mouthpiece, it serves as a protective wall and realizes a more highly sensitive transmission / reception state. Therefore, it is possible to obtain the effect that it is possible to secure high-quality call characteristics that are less likely to be adversely affected in the usage environment.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment in which a flip unit of a mobile phone according to the present invention is closed.

FIG. 2 is a schematic perspective view showing an embodiment of the mobile phone according to the present invention in a state where a flip portion is opened.

FIG. 3 is a schematic perspective view showing an opening angle of a flip portion of a mobile phone according to the present invention with respect to a grip portion.

FIG. 4 is an exploded perspective view of a flip unit in the mobile phone according to the present invention.

FIG. 5 is an exploded perspective view showing an internal structure of one rotation shaft of a rotation shaft portion in the mobile phone according to the present invention.

FIG. 6 is an exploded perspective view showing the internal structure of the other rotating shaft of the rotating shaft portion in the mobile phone according to the present invention.

FIG. 7 is a perspective view of a mobile phone according to a first conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Mobile phone main body 2 ... Mouthpiece part 3 ... Earpiece part 4 ... Battery 5 ... Main circuit part 6 ... Button operation part 7 ... Incoming lamp part 8 ... Sounder part 9 ... Flip part 9a ... Outer case part 9b ... Back cover 9c ... Lock receiving recess 10 ... Unlock button 10a ... Coil spring 11 ... Torsion coil spring 12 ... Internal antenna section 12a ... Coil-shaped section 12b ... Bar-shaped section 13 (13a, 13b) ... Rotating shaft section 14 ... Liquid crystal display part 15 ... Grip part 16 ... Flip lock convex part 17 ... Angle adjusting piece 17a ... Circular part 17b ... Convex part 18 ... Through hole 19a ... Small diameter concave part 19b ... Large diameter concave part 20 ... Stepped side wall

Claims (7)

[Claims] 1. A mobile phone body has first and second rotary shafts at both ends, an antenna is built in the outer periphery, and the operation part surface is protected. In addition, ambient noise is transmitted at the time of opening. A flip part that can be opened and closed to prevent entry to the part, a mouthpiece part, an earpiece part, a display part, a battery part, a main circuit part, and a grip part that integrally houses a button operation part are formed separately. Further, the mobile phone structure is characterized in that a flip part opening / closing lock releasing button is provided on a side surface of the main body of the grip part, and a flip lock part is provided below the display part. 2. The flip portion has the first and second rotating shafts on both sides, and a coil shape in which a part of a tip end is a coil shape and the other end is a bar shape inside the outer periphery as the antenna. A built-in antenna part is provided, and the first and second rotating shafts have a fitting structure capable of rotating and holding the flip part, and a cable for electrically connecting the antenna part and the main circuit part. The mobile phone structure according to claim 1, further comprising: 3. In the flip portion, the flip lock convex portion is released by pressing the flip portion lock release button, and the flip portion is held open by a coil spring to a certain angle. The mobile phone structure according to claim 1, further comprising: setting an antenna environment in which the internal antenna unit is exposed to form an even more highly sensitive transmission / reception state. 4. The mobile phone according to claim 1, wherein the mouthpiece portion formed on the grip portion is arranged between the first and second rotating shafts of the flip portion. Phone structure. 5. A coil spring that generates a rotational force for opening the flip portion is provided in the first rotation shaft, and an opening angle of the flip portion with respect to the grip portion is regulated on the second rotation shaft. The mobile phone structure according to claim 1, further comprising an angle adjusting piece formed therein. 6. The angle adjusting piece includes a circular portion that fits into a small-diameter recess formed in a portion of the mouthpiece portion that faces the second rotation shaft, and a protrusion that engages with the large-diameter recess. The mobile phone structure according to claim 5, further comprising a part. 7. The mouthpiece section is further characterized in that a part thereof is exposed to the outside when the flip section is opened or closed with respect to the grip section. The mobile phone structure according to claim 1.