JP4196112B2 - Portable electronic devices - Google Patents

Description

  The present invention relates to portable electronic devices such as mobile phones and game devices used as various audiovisual devices and information communication devices.

  The prior art will be described with reference to FIGS. 4 and 5 are cross-sectional views of the main part of a portable electronic device such as a mobile phone, and are cross-sectional views of the main part in a state where electronic components and electronic circuits are mounted.

  As an electronic component mounted on the portable electronic device, a speaker or a receiver that is an electroacoustic transducer will be described as an example. FIG. 4 is a cross-sectional view of a state in which the electroacoustic transducer is mounted on an electronic device such as a mobile phone, in which the terminal 30 is bent to some extent and an appropriate spring pressure is applied to the power feeding unit on the portable electronic device side. Is shown.

  As shown in FIG. 4, the cellular phone is configured such that a speaker 35, an electronic circuit 40 on which an electronic component 50 is mounted, and various components and modules such as a display module 60 such as a liquid crystal are placed inside an exterior case 70. It is mounted and constitutes a main part of the mobile phone 80.

  The speaker 35 is operated by supplying contact power to the terminal 30 of the speaker 35 and the electronic circuit 40 while applying spring pressure.

  Here, the terminal 30 is configured to bend a single sheet-like metal plate having conductivity and make contact with the power feeding portion of the electronic circuit 40 using the spring pressure of the metal plate. And the bending range is controlled by forming the stopper 30a by bending the final end of the sheet-like metal plate of the terminal 30 inward so that the bending of the metal plate does not exceed the reversible limit value of the metal material. is doing.

  5 is a cross-sectional view showing the state of the terminal 30 shown in FIG. 4. Due to external factors such as a drop impact of the mobile phone, the terminal 30 shown in FIG. In addition, when the bottom dead center is reached, an excessive force is applied, and the stopper 30a is deformed and crushed. In this case, the stopper 30a is deformed beyond the reversible limit value of the metal material, and once subjected to an impact, the stopper 30a does not return to its original state even if the applied pressure is lost.

  As described above, when the speaker 35 is attached to the mobile phone 80, if the pressing size of the speaker 35 is set large or the mobile phone 80 is accidentally dropped and an excessive impact force is applied to the terminal 30, the stopper 30a is crushed. As a result, the terminal 30 is permanently deformed. Therefore, the reversible limit value of the spring pressure of the metal terminal of the terminal 30 is exceeded, and the spring pressure of the terminal 30 decreases.

  For this reason, the terminal 30 cannot always maintain a strong spring pressure, the contact coupling with the power feeding portion of the electronic circuit 40 of the mobile phone 80 becomes unstable, and the mobile phone 80 is shocked or vibrated. When this happens, contact failure occurs and the signal is interrupted.

For example, Patent Literature 1 and Patent Literature 2 are known as prior art literature information related to the invention of this application.
JP 2003-37890 A Japanese Patent Laid-Open No. 11-25946

  Portable electronic devices such as mobile phones, game devices, and navigation devices have recently been particularly reduced in size and size, and their sales volume has been increasing year by year.

  In the market background as described above, there are an increasing number of cases where the above-mentioned portable electronic devices are handled violently. In addition, even if you do not intentionally handle it roughly, you may accidentally drop the portable electronic device, carry it in a bag, carry a large impact force when left in a car, etc. There is often a lot of damage. Therefore, assuming the use environment as described above, there is a strong demand from the market to improve the reliability of portable electronic devices.

  Based on the above background, conventional problems will be described. A speaker or a receiver of an electroacoustic transducer, which is an electronic component mounted on a conventional portable electronic device of this type, generates a spring pressure of the metal terminal of the terminal 30 and has a power supply unit on the portable electronic device side. The electronic circuit 40 is contact-coupled.

  However, when these loudspeakers are attached to a set, if the loudspeaker pressing size is set large, the stopper 30a of the terminal 30 may be deformed and the reversible limit value of the spring pressure of the metal terminal of the terminal 30 may be exceeded. .

  Furthermore, if these electronic devices such as mobile phones are accidentally dropped, the stopper 30a of the terminal 30 is crushed by an excessive impact force and exceeds the reversible limit value of the spring pressure of the metal terminal of the terminal 30. Sometimes. This is because the stopper 30a is also made of the same metal terminal and has a spring pressure, but the stopper 30a also exceeds the reversible limit value of the spring pressure, thereby causing permanent deformation. .

  In this case, since the spring pressure of the terminal 30 and the stopper 30a is reduced, the contact coupling with the set power feeding portion becomes unstable, and contact failure occurs when the set is subjected to impact or vibration. However, the problem is that the signal is interrupted.

  The above-mentioned problem is a problem that occurs not only in the type in which the stopper 30a is formed in the terminal 30, but also in the type in which the stopper is integrally molded with resin at the time of injection molding of the resin frame. This type occurs when the resin stopper is destroyed by an impact and exceeds the reversible limit value of the spring pressure of the metal terminal of the terminal.

  For the above reasons, it has been a problem to make the spring pressure of the terminal 30 not decrease so that the signal from the speaker will not be interrupted even if the set is impacted or vibrated.

  The present invention solves the above-described problems, and provides an excellent speaker capable of preventing a decrease in spring pressure of a terminal and realizing a stable signal supply to the speaker.

  Moreover, the above-mentioned content includes all types of electronic components mounted on portable electronic devices that generate a spring pressure of a metal terminal and are contact-coupled to a power feeding unit on the portable electronic device side. However, the present invention is not limited to the electroacoustic transducer described in this example.

  In order to achieve the above object, the present invention aims to strengthen the stopper so that the bending of the metal plate remains within a range not exceeding the reversible limit value of the metal material.

  That is, the stopper of the terminal is not formed from a material that is weak against pressure deformation and impact force, such as bending the sheet-like metal plate that is the terminal, or resin, but impact It is made of a material that is strong against force and formed into a shape that is strong against impact force.

That is, when the stopper is formed in at least a part of the electronic circuit mounted on the portable electronic device, and not provided on the electronic component itself having the spring terminal , and the spring terminal is excessively pressed. , stopper, height is adjusted to abut against the magnetic circuit and the frame without exceeding the reversible limit of the spring pressure of the spring terminal of the electronic component, and configured to control the bending range of the terminal.

  With this configuration, the stopper does not have to be provided on the electronic component itself that is small in shape, can be formed by a part of an electronic circuit that is large in shape and has a high degree of freedom as a setting position. It can be strengthened. Furthermore, since it receives a force in a substantially right-angle shape against pressure deformation and impact force, it has a strong resistance against deformation and a strong impact resistance.

  Therefore, since the function can be fulfilled without causing deformation or destruction of the stopper itself against deformation of the terminal, when the speaker is attached to an electronic device such as a mobile phone, the pressing size of the speaker can be set large. Even if an electronic device such as a mobile phone is accidentally dropped and an excessive impact force is applied to the terminal, the stopper will not be deformed or crushed, exceeding the reversible limit value of the spring pressure of the metal terminal of the terminal The terminal spring pressure will not decrease.

  For this reason, the terminal can maintain a strong spring pressure at all times, the contact coupling with the set power supply unit is stabilized, and no contact failure occurs even when the set is shocked or vibrated. Therefore, the signal is stabilized without being interrupted.

  Therefore, the reliability of the portable electronic device can be improved.

  As described above, according to the present invention, a stopper is formed in at least a part of an electronic circuit mounted on a portable electronic device, and the height is adjusted by the stopper to control the bending range of the terminal.

  With this configuration, the stopper does not have to be provided on the electronic component itself that is small in shape, can be formed by a part of an electronic circuit that is large in shape and has a high degree of freedom as a setting position. It can be strengthened. Furthermore, since it receives a force in a substantially right-angle shape against pressure deformation and impact force, it has a strong resistance against deformation and a strong impact resistance.

  Therefore, it is possible to fulfill the function against the deformation of the terminal without causing the deformation or destruction of the stopper itself, and the terminal does not exceed the reversible limit value of the spring pressure of the metal terminal of the terminal. Strong spring pressure can be maintained.

  As described above, the contact coupling with the power supply part of the electronic device is stabilized, and even when the electronic device is shocked or vibrated, no contact failure occurs, so the signal is stabilized without interruption. To do. Therefore, it is possible to improve the reliability and quality of electronic devices such as mobile phones.

  Furthermore, since it is not necessary to provide the stopper on the electronic component itself which is small in shape, the electronic component can be developed by concentrating on the originally required function, and further performance improvement and downsizing can be achieved.

  In addition, since the function of the stopper is substituted for part of the electronic circuit, there is no need to add separate parts and the number of parts can be reduced, thereby reducing costs. Can also be realized.

  Therefore, the present invention can provide an excellent portable electronic device that can realize stable contact bonding, and its industrial value is very large.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The present invention can be applied to all types of electronic components mounted on a portable electronic device that generate a spring pressure of a metal terminal and are contact-coupled to a power feeding unit on the portable electronic device side. it can.

  In particular, an example in which an electroacoustic transducer, which is an electronic component, is mounted on a mobile phone, which is a portable electronic device, will be described, but is not limited thereto.

Hereinafter, with reference to the first embodiment, illustrating an aspect of the present invention.

  1 and 2 show a mobile phone as a portable electronic device according to an embodiment of the present invention. FIG. 1 is a cross-sectional view of a mobile phone according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a state in which the terminal in FIG. 1 has reached bottom dead center due to protection of a stopper.

  As shown in FIGS. 1 and 2, the mobile phone 80 has a configuration in which components such as a speaker 35, an electronic circuit 40, a display module 60 such as a liquid crystal, a module, and the like are mounted inside an exterior case 70. The main part of the telephone 80 is comprised. The speaker 35 is operated by supplying contact power to the terminal 30 of the speaker 35 and the electronic circuit 40 while applying spring pressure. Here, in this electronic circuit 40, terminal portions soldered to the circuit board of the electronic circuit 40 of the electronic component 50 mounted on the electronic circuit 40 are set in advance to form stoppers 41a and 41b. is doing.

  With this configuration, when the speaker 35 as shown in FIG. 2 is attached to the mobile phone 80, the pressing size of the speaker 35 is set large, or the mobile phone 80 is accidentally dropped to cause an excessive impact force on the terminal 30. Is added, the terminal 30 will not be permanently deformed or crushed by the effects of the stoppers 41a and 41b.

  Here, since the height of the stoppers 41a and 41b is set as a stopper for controlling the bending range of the terminal 30, protection of the terminal 30 can be realized.

  The stoppers 41a and 41b are preferably made of a metal material. The reason for this is that even if an excessive force is applied due to a drop impact, it can withstand a large number of drop impacts without breaking or breaking, and it has excellent environmental resistance such as thermal shock resistance and chemical resistance. This is because. Moreover, even if it is not a metal material, if it is a material which can satisfy said performance, it can be used.

  Further, it is desirable that the stopper is provided with a reinforcing rib. The reason for this is that even if an excessive force due to a drop impact or the like is applied, the impact resistance is further improved by the effect of the reinforcing rib, and the reversible limit value of the spring pressure of the metal terminal of the terminal 30 is not exceeded, This is because the terminal 30 can be reliably protected.

  Therefore, since the reversible limit value of the spring pressure of the metal terminal of the terminal 30 is not exceeded and the spring pressure of the terminal 30 is not reduced, the terminal 30 can always maintain a strong spring pressure. In addition, the contact coupling with the power feeding portion of the electronic circuit 40 of the mobile phone 80 is stabilized, and even when the mobile phone 80 is shocked or vibrated, no contact failure occurs, so that the signal is interrupted. Can be stabilized. Therefore, the reliability and quality of electronic devices such as mobile phones can be improved.

  As described above, the electronic circuit 40 can exhibit both the original purpose and the function and effect as a stopper of the terminal 30, and its value is high. In particular, since the action and effect of the stopper receives a force substantially perpendicular to the external impact force, the impact resistance is improved. Therefore, by sharing the original purpose, it is possible to reduce the number of parts, thereby realizing a reduction in cost.

  As described above, the terminal portion of the electronic component 50 mounted on the electronic circuit 40 is used to substitute the role as a stopper. However, the present invention is not limited to this method. It may be substituted. In this case, the type of electronic component 50 is preferably a chip component such as a resistor, a coil, or a capacitor, or an integrated circuit component such as an IC or LSI, particularly those having high resistance to compression and impact.

  With this configuration, when the speaker is attached to an electronic device such as a mobile phone, the terminal 30 is bent to some extent, and an electronic circuit that is a power feeding unit on the electronic device side such as a mobile phone is maintained in an appropriate spring pressure state. Is done. Even if the speaker is pressed firmly and attached, the stopper hits and the terminal 30 does not move any further.

  Moreover, even if an electronic device such as a mobile phone is accidentally dropped and an excessive impact force is applied to the terminal 30, a deformation exceeding the reversible limit value of the metal material may occur or be crushed by the effect of the stopper. Therefore, the reversible limit value of the spring pressure of the metal terminal of the terminal 30 is not exceeded, and the spring pressure of the terminal 30 is not reduced.

  For this reason, the terminal 30 can always maintain a strong spring pressure, and the contact coupling with the power feeding portion of the electronic device is stabilized, resulting in poor contact even when the electronic device is impacted or vibrated. The signal is stabilized without interruption.

  Further, the stopper receiving portion described above will be described below. As shown in FIG. 2, the stopper receiving portion is an electroacoustic transducer itself which is an electronic component having a spring terminal. With this configuration, the electroacoustic transducer itself having a spring terminal among the components of a mobile phone equipped with many built-in components can be used with high accuracy in determining the reversible limit value of the spring pressure. The height of the stopper can be set.

  This is because in setting the height of the stopper, the dimensional accuracy of the component parts and the assembly accuracy in production can be set to a minimum.

  In this case, two stoppers 41a and 41b are provided. The receiving portion of the stopper 41a is a frame of an electroacoustic transducer that is an electronic component, and the receiving portion of the stopper 41b is also a magnetic circuit of the electroacoustic transducer.

  Thus, when the receiving portion is a frame, the height of the stopper can be set with higher accuracy. This is because the installation reference point of the terminal 30 is almost a frame. This is because the terminal 30 is insert-molded by the resin frame.

  Therefore, since the frame is often a resin and is inferior in impact resistance compared to a metal material, the magnetic circuit, which is a metal material having a high impact resistance, is also configured as a receiving portion of the stopper 41b. With this configuration, since the stopper receiving portion is provided at two locations of the frame and the magnetic circuit, it is possible to improve both the height accuracy of the stopper and the impact resistance.

  Further, since the required reliability level differs depending on the portable electronic device to be used, it is possible to appropriately select the stopper according to the situation and level, such as a single stopper. For the above reasons, the reliability of portable electronic devices can be improved.

(Embodiment 2)
Hereinafter, other aspects of the present invention will be described using the second embodiment.

  FIG. 3 shows a cross-sectional view of a speaker according to an embodiment of the present invention.

  Only differences from the first embodiment will be described. As shown in FIG. 3, the stoppers 41c and 41d are formed by implanting pin-shaped stoppers made of a metal material on a circuit board of an electronic circuit.

  The stoppers 41c and 41d use component parts other than electronic parts as receiving parts for the stoppers. That is, the receiving portion of the stopper 41c is an exterior case 70 of the mobile phone, and the receiving portion of the stopper 41d is a component other than the electronic component.

  When the impact resistance of the electronic component is insufficient due to this configuration, the exterior case 70 and other component parts are selected as a receiving part by selecting a part having excellent impact resistance, thereby improving reliability and safety. The property can be further improved. Therefore, it is possible to further improve the reliability and safety of electronic devices such as mobile phones.

  The portable electronic device according to the present invention can be applied to a portable electronic device such as an audiovisual device, an information communication device, or a game device that needs to be improved in reliability, quality, and safety.

Sectional drawing of the principal part of the portable electronic device in one embodiment of this invention Sectional drawing of the principal part of the portable electronic device in one embodiment of this invention Sectional drawing of the principal part of the portable electronic device in one embodiment of this invention Sectional view of the main parts of a conventional portable electronic device Sectional view of the main parts of a conventional portable electronic device

Explanation of symbols

30 Terminal 30a Stopper 35 Speaker 40 Electronic circuit 41a Stopper 41b Stopper 41c Stopper 41d Stopper 50 Electronic component 60 Display module 70 Exterior case 80 Mobile phone

Claims (5)

An electronic component having a spring terminal made of a conductive metal material extended from a component body having at least a magnetic circuit and a frame coupled to the magnetic circuit ;
An electronic circuit having a feeding portion for contacting the feed by utilizing a spring pressure of the spring terminals,
Provided in this electronic circuit , comprising a stopper facing the component main body through a gap,
When the spring terminal is pressed excessively, the stopper, characterized in that the height to contact is set in the magnetic circuit and frame within a range that does not exceed the reversible limit value of the spring pressure before tusks Ne terminal portable electronic devices to be. The portable electronic device according to claim 1, wherein the stopper is made of a metal material. The portable electronic device according to claim 1, wherein the stopper is a plurality of stoppers. The stopper is a portable electronic device according to any one of claims 1 to 3 which is mounted electronic components to the electronic circuits. Portable electronic device according to the stopper, any one of claims 1 to 4 provided with reinforcing ribs.

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