JP2007180848A - Portable electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide portable electronic equipment, wherein a driving component is prevented from being broken when forming a circuit on a circuit board and a circuit of the driving component can be configured without increasing a space of the circuit board. <P>SOLUTION: Both ends of an open circuit are respectively connected to a first terminal 41 and a second terminal 42 of a first connector reception part 37 and a connection cable 7 is joined to the first connector reception part 37, whereby the open circuit is made into a closed circuit. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to portable electronic devices such as mobile phones and PDAs.

In recent years, portable electronic devices having a clock function such as a mobile phone and a PDA are provided with a clock backup function. This watch backup function is a circuit in which a backup circuit is formed on a circuit board provided in a casing constituting a portable electronic device, and this backup circuit is used to supply power to electric / electronic components constituting the portable electronic device. A battery and a memory different from the battery constitute a closed circuit.
By the way, a button battery is used as this battery, and in order to drive the backup circuit, the battery is not driven until the button battery is fitted in the socket formed on the circuit board.
However, in recent years, many functions have been mounted on portable electronic devices, and as a result, the mounting space has been reduced due to the number of components mounted on the circuit board and restrictions on the design, and for small button batteries. Even sockets are limiting the placement space.
Therefore, there is a battery that does not require a socket space for a button battery by using a button battery having a lead plate and forming a backup circuit by joining the battery together with other components on a circuit board by soldering or the like. It has been proposed (see, for example, Patent Document 1).
JP 2002-298804 A

By the way, when components are mounted on a circuit board, soldering is performed by solder reflow. At this time, in the above-described backup circuit, a closed circuit is formed in a state where heat is applied. There is a problem that there is a risk of damage.
On the other hand, it is conceivable to form a closed circuit by forming a jumper pin on a circuit board on which an open circuit is formed and attaching a jumper after solder reflow to make it conductive. An arrangement space is required, and the degree of freedom of arrangement of other parts is impaired.

  Accordingly, the present invention provides a portable electronic device that can prevent a drive component from being damaged when a circuit is formed on a circuit board and can configure a circuit of the drive component without increasing the space of the circuit board. To do.

In order to solve the above-described problem, the invention described in claim 1 is configured to mount a drive component, a battery, and a first connector receiving portion for connecting to another component on a circuit board, The driving component and the battery are electrically connected to form an open circuit, and both ends of the open circuit are connected to the first and second terminals of the first connector receiving portion, respectively. The open circuit is configured to be a closed circuit by joining a connector to the connector receiving portion.
With this configuration, the circuit can be kept open in a high-temperature environment during soldering, and a jumper portion can be provided using a connector used for connection with other components. .

The invention described in claim 2 includes a plurality of connectors and a connecting member having wiring for connecting the connectors, and any one connector connected to the first connector receiving portion is the first connector. The third and fourth terminals are respectively connected to the first and second terminals of the connector receiving portion, and the third and fourth terminals are short-circuited.
Such a configuration eliminates the need for any processing on the circuit board side.

The invention described in claim 3 includes a plurality of connectors and a connecting member having wiring for connecting the connectors, and any one connector connected to the first connector receiving portion is the first connector. The third and fourth terminals respectively connected to the first and second terminals of the connector receiving portion, and the wiring connected to the third and fourth terminals are short-circuited .
Such a configuration eliminates the need for any processing on the circuit board side or the connector terminal side.

The invention described in claim 4 includes any one of a plurality of connectors and a connecting member having a wiring for connecting each connector, and a second connector receiving portion, and connected to the first connector receiving portion. One connector includes third and fourth terminals connected to the first and second terminals of the first connector receiving portion, respectively, and the other connector includes the third and fourth terminals, respectively. Fifth and sixth terminals connected, and the second connector receiving portion is connected to the fifth and sixth terminals when the other connector is connected, respectively. Eight terminals are short-circuited.
With this configuration, no processing is required for the connector connected to the circuit board side or the first connector receiving portion.

The invention described in claim 5 is provided with a plurality of connectors and a connecting member provided with wiring for connecting the connectors, and is connected to the first and second terminals of the first connector receiving portion, respectively. In addition to the third and fourth terminals, the other connector includes fifth and sixth terminals connected to the third and fourth terminals, respectively, and short-circuits the fifth and sixth terminals. It is characterized by being.
Such a configuration eliminates the need for any processing on the wiring.

According to the present invention, the circuit can be maintained in an open circuit under a high temperature environment during soldering, so that it is possible to prevent damage to the drive component during circuit formation on the circuit board, and other components. A closed circuit can be formed by connecting a connector to the connector receiving portion used for the connection.
Further, since it is not necessary to provide a space dedicated to the jumper portion, there is an effect that a circuit of a driving component can be formed without increasing the space of the circuit board.

Next, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the portable electronic device 1 includes a first casing 3 having a plurality of operation keys such as a numeric keypad 81, a cursor key 82, or a function key 83, and a second casing 5 having a main display 4. This is a so-called foldable mobile phone that is pivotally supported so as to be opened and closed via a hinge portion 6 provided at the base.

The first housing 3 includes a circuit board 34 inside a rear case 32 formed in a box shape. A wireless communication unit, a control unit, and the like mounted on the circuit board 34 are covered with a conductive shield case 13 connected to a ground pattern formed on the circuit board 34. On the circuit board 34, a first connector receiving portion 37 connected to the first connector 71 of the connection cable 7 is exposed.
An antenna 30 is disposed on the front end side of the rear case 32, and the antenna 30 is connected to a wireless communication unit (not shown).

A front case 31 is provided at the opening of the rear case 32 so as to cover the circuit board 34 and the antenna 30. In the front case 31, the key operation unit 2 including the plurality of operation keys is exposed.
Bearing portions 9A and 9B of a hinge portion 6 that pivotally supports the second housing 5 so as to be openable and closable are provided on both sides of the base end of the front case 31 so as to protrude toward the rear case 32 side.
The bearing portions 9A and 9B are provided with first hole portions 91A and 91B through which end portions of a cylindrical rotary shaft 18A and a hinge unit 18B provided in the second housing 5 are inserted, respectively.
In addition, a storage recess 93 for storing the protruding portion 16 provided in the second housing 5 is formed on the base side of the front case 31.

The second housing 5 that is pivotally supported by the first housing 3 is provided with a front case 51 in which the main display 4 is exposed and arranged on the inner surface, and the sub display 14 is exposed and arranged on the outer surface.
Inside the front case 51, a circuit board 55 is disposed in a state of being sandwiched between the main display 4 and the sub display 14. The circuit board 55 is provided with a second connector receiving portion 56 that is connected to the second connector 73 of the connection cable 7. The camera module 15 is provided on the base side of the front case 51 adjacent to the circuit board 55. ing.

On the surface side of the base portion of the front case 51, a protruding portion 16 of the hinge portion 6 is provided protruding toward the first housing 3 side, and a part of the cylindrical rotating shaft 18A and the hinge unit 18B is a protruding portion. The protrusion 16 is provided so as to protrude from both ends of the protrusion 16. The rotary shaft 18A has a second hole 92 therein. The second hole portion 92 has a size that allows the connection cable 7 to be inserted therethrough.
With the protrusion 16 fitted in the storage recess 93, both ends of the rotary shaft 18A and the hinge unit 18B are inserted into the first holes 91A and 91B, respectively, and supported by the bearing portions 9A and 9B. Thereby, the 1st housing | casing 3 and the 2nd housing | casing 5 are supported so that opening and closing is possible.

  A rear case 52 is provided so as to cover the opening of the front case 51. A window 53 for the sub display 14 is provided in the upper part of the rear case 52, and a window 54 through which the lens 15a of the camera module 15 is exposed is formed in the lower part.

The circuit board 34 and the circuit board 55 described above are connected by the connection cable 7. The connection cable 7 includes a first connector 71 connected to the first connector receiving portion 37 on the circuit board 34 side, a second connector 73 connected to the second connector receiving portion 56 on the circuit board 55 side, and these first connectors. 71 and the cable part 72 which connects the 2nd connector 73.
The connection cable 7 is formed by inserting a cable portion 72 composed of a plurality of coaxial cables through the second hole portion 92 and straddling the first connector receiving portion 37 and the second connector receiving portion 56, thereby The circuit board 55 is connected.

  On the circuit board 34, a CPU for performing various processes inside the portable electronic device, a main memory, a wireless communication unit, and the like are mounted on a predetermined wiring pattern by soldering, and the wiring pattern is a first connector receiving unit 37. Are connected to predetermined terminals. In addition to the wiring pattern, a clock backup circuit is formed by a RTC with memory (real time clock) 36 and a button battery 38 for clock backup, as shown in FIG.

As shown in FIG. 7, the button battery 38 is directly fixed to the circuit board 34 with the solder X via the minus electrode 21, and the plus electrode 22 has a lead plate 33 previously joined by spot welding or the like. The board 33 is fixed to the circuit board 34 with solder X.
The negative electrode 21 of the button battery 38 is connected to the RTC 36 with memory, is connected from the RTC 36 with memory via the clock output line 23 to the first connector receiving portion 37, and the positive electrode 22 is connected to the first connector receiving line via the positive power supply line 24. Connected to the unit 37. The button battery 38, the RTC 36 with memory, and the first connector receiving portion 37 form a watch backup circuit 40 that is an open circuit on the circuit board 34.
The clock backup circuit 40 is configured independently so that the circuit operation can be performed without the power supply of the second battery B, and the negative power line 25 is connected to the ground on the circuit board 34.

  The circuit board 55 is mounted with an LCD display 57 for displaying the main display 4 and the sub-display 14, a receiving speaker 58, and the like, and includes a second connector receiving portion 56 connected to these.

Here, as shown in FIG. 3, the clock output line 23 is connected to the first terminal 41 in the first connector receiving portion 37, and the plus power supply line 24 is the second terminal in the first connector receiving portion 37. 42.
Further, a jumper portion 43 is provided in the first connector 71 of the connection cable 7, and the first terminal 41 and the second terminal 42 are short-circuited by connecting the first connector 71 and the first connector receiving portion 37. It is like that.
That is, the timepiece backup circuit 40 can form a closed circuit only when the first connector 71 of the connection cable 7 is connected to the first connector receiving portion 37 of the circuit board 34.

Therefore, according to the first embodiment described above, if the first connector 71 of the connection cable 7 is separated from the first connector receiving portion 37 of the circuit board 34 when the button battery 38 is fixed by soldering, the timepiece backup is performed. Since the circuit 40 can be kept in an open circuit state, and the clock backup circuit 40 can be prevented from starting operation at the time of solder reflow, the damage to the RTC 36 with memory can be prevented as in the case where the energized state is at the time of solder reflow. can do.
Further, since the jumper portion 43 is provided in the first connector 71 of the connection cable 7 used for the connection between the circuit board 34 and the circuit board 55, there is no need to provide a space dedicated to the jumper portion 43 on the circuit board 34. Thus, it is possible to configure a watch backup circuit without increasing the space occupied by the circuit board 34.

Next, a second embodiment of the present invention will be described based on FIG. 4 with reference to FIGS. The same parts as those in the first embodiment will be described with the same reference numerals (the same applies to the following embodiments).
In this embodiment, the clock output line 23 of the button battery 38 is connected to the first terminal 41 in the first connector receiving portion 37, and the plus side power line 24 is connected to the second terminal 42 in the first connector receiving portion 37. Has been.
Further, in the first connector 71 of the connection cable 7, a third terminal 44 connected to the first terminal 41 of the first connector receiving portion 37 and a fourth terminal 45 connected to the second terminal 42 are provided. Both are led into the cable portion 72 of the connection cable 7.
A jumper portion 43 is provided in the cable portion 72, and the third terminal 44 and the fourth terminal 45 are short-circuited by the jumper portion 43 in the cable portion 72.

According to the second embodiment described above, by changing only the cable portion 72 of the connection cable 7 connected to the first connector receiving portion 37 of the circuit board 34, the first connector 71 of the connection cable 7 is changed to the first connector receiving portion. If the watch backup circuit 40 can be kept in an open circuit state by being removed from the portion 37, and the watch backup circuit 40 can be prevented from starting operation during solder reflow, the watch backup circuit 40 can be prevented from starting operation. As described above, it is possible to prevent the RTC with memory 36 from being damaged.
Further, since the jumper portion 43 is provided in the cable portion 72 of the connection cable 7 used for connecting the circuit board 34 and the circuit board 55, it is not necessary to provide a space dedicated to the jumper portion 43 on the circuit board 34. It is possible to configure a watch backup circuit without increasing the space occupied by the circuit board 34.

Next, a third embodiment of the present invention will be described based on FIG. 5 with reference to FIGS.
In this embodiment, the clock output line 23 of the button battery 38 is connected to the first terminal 41 in the first connector receiving portion 37, and the plus side power line 24 is connected to the second terminal 42 in the first connector receiving portion 37. Has been.
In the first connector 71 of the connection cable 7, a third terminal 44 connected to the first terminal 41 of the first connector receiving portion 37 and a fourth terminal 45 connected to the second terminal 42 are provided. The cable portion 72 is extended to the second connector 73.
In the second connector 73, a fifth terminal 46 connected to the third terminal 44 and a sixth terminal 47 connected to the fourth terminal 45 are provided. The second connector 73 is connected to the second connector receiving portion 56. Connected to.

In the second connector receiving portion 56, a seventh terminal 48 connected to the fifth terminal 46 and an eighth terminal 49 connected to the sixth terminal 47 are provided.
Further, a jumper portion 43 is provided in the second connector receiving portion 56 so that the seventh terminal 48 and the eighth terminal 49 are short-circuited by connecting the seventh terminal 48 and the eighth terminal 49. It has become.
That is, the watch backup circuit 40 forms a closed circuit only when the first connector 71 of the connection cable 7 is connected to the first connector receiving portion 37 and the second connector 73 is connected to the second connector receiving portion 56. It becomes possible to do.

According to the above-described third embodiment, by changing only the second connector receiving portion 56, if the second connector 73 is removed from the second connector receiving portion 56, the clock backup circuit 40 is maintained in an open circuit state. In addition, since the clock backup circuit 40 can be prevented from starting operation at the time of solder reflow, it is possible to prevent damage to the RTC 36 with memory as in the case where the energized state is obtained at the time of solder reflow.
Further, since the jumper portion 43 is provided in the second connector receiving portion 56, it is not necessary to provide a space dedicated to the jumper portion 43 on the circuit board 34, and the timepiece backup circuit without increasing the space occupied by the circuit board 34. Can be configured.
Further, the connection cable 7 that connects the circuit board 34 and the circuit board 55 is not required to be processed, and only the second connector 73 provided on the circuit board 55 is processed so that the circuit board 34 and the connection cable 7 are processed. The conventional one can be used, and the countermeasure is easy.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
In this embodiment, the clock output line 23 of the button battery 38 is connected to the first terminal 41 in the first connector receiving portion 37, and the plus side power line 24 is connected to the second terminal 42 in the first connector receiving portion 37. Has been.
In the first connector 71 of the connection cable 7, a third terminal 44 connected to the first terminal 41 of the first connector receiving portion 37 and a fourth terminal 45 connected to the second terminal 42 are provided. The cable portion 72 is extended to the second connector 73.
In the second connector 73, a fifth terminal 46 connected to the third terminal 44 and a sixth terminal 47 connected to the fourth terminal 45 are provided. The second connector 73 is connected to the second connector receiving portion 56. Connected to.

In the second connector receiving portion 56, a seventh terminal 48 connected to the fifth terminal 46 and an eighth terminal 49 connected to the sixth terminal 47 are provided.
Further, the jumper portion 43 is provided on the circuit board 55 and is connected to the second connector receiving portion 56 in advance to short-circuit the seventh terminal 48 and the eighth terminal 49.
That is, the watch backup circuit 40 forms a closed circuit only when the first connector 71 of the connection cable 7 is connected to the first connector receiving portion 37 and the second connector 73 is connected to the second connector receiving portion 56. It becomes possible to do.

According to the above-described fourth embodiment, by changing only the circuit board 55, the clock backup circuit 40 can be kept in an open circuit state by removing the second connector 73 from the second connector receiving portion 56. Since it is possible to prevent the clock backup circuit 40 from starting operation at the time of solder reflow, it is possible to prevent the RTC 36 with memory from being damaged as in the case where the power is turned on at the time of solder reflow.
Further, since the jumper portion 43 is provided on the circuit board 55, it is not necessary to provide a space dedicated to the jumper portion 43 on the circuit board 34, and a backup circuit for a watch is configured without increasing the space occupied by the circuit board 34. It becomes possible.
Furthermore, no processing is required for the circuit board 34 and the connection cable 7, and the circuit board 34 and the connection cable 7 can be used in the conventional manner by processing only the circuit board 55, so that measures can be easily taken. .

  As described above, according to the first embodiment, since no processing is required on the circuit board side, it can be applied to products including various circuit boards by changing only the connector, and the versatility is improved. is there.

  Further, according to the second embodiment, since no processing is required on the circuit board side or the terminal side of the connector, it can be applied to products having various circuit boards by changing only the wiring of the connector. There is an effect to increase the nature.

  Further, according to the third and fourth embodiments, since no processing is required for the connector connected to the circuit board side or the first connector receiving portion, only the second connector receiving portion is processed. Thus, the connector connected to the circuit board and the first connector receiving portion can be used as it is, and there is an effect that measures can be easily taken.

The present invention is not limited to the above-described embodiment. For example, in the third embodiment shown in FIG. 5, the case where the jumper portion 43 is provided in the second connector receiving portion 56 has been described. Alternatively, the jumper portion 43 may be provided.
In the present embodiment, a foldable mobile phone has been described as an example. However, the present invention can also be applied to a rotary type or slide type mobile phone, and further to a straight type mobile phone.
Furthermore, although the case where the first connector 71 and the second connector 73 are provided in the connection cable 7 has been described in the above embodiment, the cable portion 72 of the connection cable 7 is directly connected to the first connector receiving portion 37 and the second connector receiving portion 56. It is good also as a structure connected to.
And although the said embodiment demonstrated the case where the coaxial cable was provided in the connection cable 7, it is 1st embodiment-even when it is a case where it replaces with a coaxial cable and a flexible substrate (FFC, FPC) and a flat cable are used. The same effect can be obtained by adopting any configuration of the fourth embodiment.
Moreover, although the said embodiment demonstrated the case where the jumper part 43 was provided in the timepiece backup circuit 40, it is applicable to any circuit comprised by connecting a battery electrically.

It is a perspective view of a foldable portable electronic device in an embodiment of the present invention. It is a block diagram which shows the outline of the circuit board in the foldable portable electronic device of this invention. It is detail drawing of the circuit board in 1st embodiment of this invention. It is detail drawing of the circuit board in 2nd embodiment of this invention. It is detail drawing of the circuit board in 3rd embodiment of this invention. It is detail drawing of the circuit board in 4th embodiment of this invention. It is a fragmentary sectional view of the circuit board which mounted the button battery in the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Portable electronic device, 7 ... Connection cable (connection member), 21 ... Negative electrode, 22 ... Positive electrode, 34 ... Circuit board, 35 ... CPU (other components), 36 ... RTC (drive component) with memory, 37 ... 1st connector receiving part (1st connector receiving part), 38 ... Button battery (battery), 40 ... Clock backup circuit, 41 ... 1st terminal (1st terminal), 42 ... 2nd terminal (2nd terminal Terminal), 43 ... jumper section, 44 ... third terminal (third terminal), 45 ... fourth terminal (fourth terminal), 46 ... fifth terminal (fifth terminal), 47 ... sixth terminal ( Sixth terminal), 48 ... Seventh terminal (seventh terminal), 49 ... Eighth terminal (eighth terminal), 55 ... Circuit board, 56 ... Second connector receiving portion (second connector receiving portion) 71 ... 1st connector (connector), 72 ... Cable part (wiring), 73 ... 2nd connector (connector)

Claims (5)

  A drive component, a battery, and a first connector receiving portion for connecting to other components are mounted on a circuit board, and the drive component and the battery are electrically connected to form an open circuit. At the same time, both ends of the open circuit are connected to the first and second terminals of the first connector receiving part, respectively, and the connector is joined to the first connector receiving part to make the open circuit a closed circuit. A portable electronic device characterized by being configured as described above.   A plurality of connectors and a connecting member having wiring for connecting between the connectors, and any one of the connectors connected to the first connector receiving portion includes first and second connectors of the first connector receiving portion. The portable electronic device according to claim 1, further comprising a third terminal and a fourth terminal connected to the two terminals, respectively, wherein the third and fourth terminals are short-circuited.   A plurality of connectors and a connecting member having wiring for connecting between the connectors, and any one of the connectors connected to the first connector receiving portion includes first and second connectors of the first connector receiving portion. The portable electronic device according to claim 1, further comprising a third terminal and a fourth terminal connected to the second terminal, respectively, wherein a wiring connected to the third terminal and the fourth terminal is short-circuited. .   A plurality of connectors and a connecting member having wiring for connecting between the connectors, and a second connector receiving portion, and any one of the connectors connected to the first connector receiving portion is the first connector The third and fourth terminals are respectively connected to the first and second terminals of the connector receiving portion, and the other connectors are the fifth and sixth terminals respectively connected to the third and fourth terminals. A terminal, and the second connector receiving portion short-circuits the seventh and eighth terminals respectively connected to the fifth and sixth terminals when the other connector is connected. The portable electronic device according to claim 1. A plurality of connectors and a connecting member having wiring for connecting between the connectors, and any one of the connectors connected to the first connector receiving portion is the first and second connectors of the first connector receiving portion; The third and fourth terminals are connected to the second terminal, respectively, and the other connector is provided with the fifth and sixth terminals connected to the third and fourth terminals, respectively. 5. The portable electronic device according to claim 1, wherein the fifth and sixth terminals are short-circuited.

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