JP3803970B2 - Charger for mobile phone - Google Patents

Description

  The present invention relates to a mobile phone charger used when charging a mobile phone.

  The spread of mobile phones is remarkable today. This mobile phone has a built-in battery. When the battery capacity is exhausted, a mobile phone charger (hereinafter simply referred to as a charger) is connected and charged for use.

  Such mobile phones are manufactured from many manufacturers, and various systems exist. As various systems, for example, a digital wireless communication system (PDC) mobile phone used in Japanese mobile phones, a plurality of callers' voice signals are multiplied by different codes, and all the voice signals are synthesized to 1 A code division multiple access (CDMA) system mobile phone that allows the receiver to extract only the other party's voice signal by multiplying the synthesized signal by the other party's code talking to him / her. There are telephones, mobile telephones of the system (FOMA) adopting “W-CDMA” which is one of the technical specifications of the standard IMT-2000 of the next generation mobile telephone system defined by the International Telecommunications Union (ITU).

  In each of these types of mobile phones, since the connection shape with the charger is different, a dedicated charger is used. Such chargers include portable power sources that place importance on portability such as so-called adapter power supplies and dry batteries.

  Under such a background, various proposals have been made, such as a need to be able to charge a plurality of types of mobile phones having different systems with a single charger.

For example, a configuration in which a conversion adapter is provided so that a charger can be connected to a mobile phone of a different system has been proposed (see Patent Document 1).
Utility Model Registration No. 3084263

  However, in the above proposal, since the conversion adapter is simply configured to be inserted into the connector on the charger side, it always uses two types of connectors (the original connector and two conversion adapters). There was a risk of damage due to the length of the part, the adapter was not charged due to insufficient insertion amount of the conversion adapter, or the adapter on the conversion adapter or charger side was damaged due to excessive insertion .

  In addition, since the conversion adapter has a shape that is symmetrical at first glance, it is inconvenient to confirm the insertion direction by confirming the terminal arrangement or by actually inserting it.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a mobile phone charger that is an insertable / removable connector, is inexpensive, has high charging reliability, and is highly convenient.

The configuration of the present invention for achieving the above-described object is as follows.
The battery charger for a mobile phone according to claim 1 stores a battery for supplying charging power to mobile phones of various types, a charger main body provided with a connector insertion hole at a tip thereof, and a power source for the mobile phone. The portable terminal portion formed so as to correspond to the terminal specifications and provided so as to be detachable from the power supply terminal has the same dimensions so that a common upper connector case and lower connector case can be used. A terminal part formed on the base so as to project from the base, one end of which forms a terminal on the portable terminal, and the other end penetrates through a terminal fitting constituting the charger side terminal part, and this It is characterized by having a connector integrated by sandwiching the base of the terminal portion between the upper connector case and the lower connector case.

 Thereby, even if the size of the portable terminal portion in the terminal portion is different, since the base is formed in the same size, it is common to the terminal portion formed corresponding to the specifications of the power supply terminal in the mobile phone An upper connector case and a lower connector case can be used, and the cost can be reduced by sharing the members.

  According to a second aspect of the present invention, there is provided a charger for a mobile phone, wherein the charger main body according to the first aspect has a space formed in the head thereof and is connected to the mobile phone in the space. A circuit board for detecting and charging is disposed, and a connector is provided with two terminals for positive and negative power sources together with a terminal plate for detecting connection with a mobile phone 2 Two terminal plates are provided, and a step surface is formed in contact with the end of the circuit board to restrict insertion of the connector and prevent insertion in an inverted state. It is a feature.

  Since the stepped surface is provided so that the connector contacts the end of the circuit board, insertion is restricted when the stepped surface contacts the circuit board, so that the connector can be prevented from being pushed too much, It is possible to easily know erroneous insertion.

  According to a third aspect of the present invention, there is provided a mobile phone charger having an engaging groove formed in the connector, and the charger body is urged by an elastic body when the connector is inserted into the connector insertion hole. And an engagement protrusion that engages with the engagement groove while pressing the bottom surface of the engagement groove, and the circuit board is in contact with the engagement protrusion and the terminal plate to be elastically deformed. A power supply terminal that presses the terminal plate and comes into close contact with the terminal plate is provided.

  As a result, the power supply terminal and the terminal plate are in close contact with each other, and the resistance at the contact portion does not increase, and a good electrical contact state can be achieved.

According to the first to third aspects of the present invention, the base is formed in the same dimension even if the dimensions of the portable terminal part in the terminal part are different. A common upper connector case and lower connector case can be used for the terminal portions formed in this manner, and the cost can be reduced by sharing the members.
In addition to the above-described common effects obtained by the inventions described in claims 1 to 3, the following effects can be obtained according to the inventions described in the claims.
According to the second aspect of the present invention, since the step surface 20c is provided on the connector so as to contact the end portion of the circuit board, insertion is restricted when the step surface contacts the circuit board. Therefore, it is possible to prevent the connector from being pushed too much and to easily know the erroneous insertion.
According to the third aspect of the present invention, the power supply terminal and the terminal plate are in close contact with each other, and the resistance at the contact portion does not increase, and a good electrical contact state can be achieved.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a mobile phone charger 2 according to the present invention, and FIG. 2 is a cross-sectional view of a charger main body 31. 3 is a view showing a state where the cap 32 is removed from the charger main body 31, and FIG. 4 is a cross-sectional view of the connector 4a. FIG. 5 is a perspective view showing a state in which the mobile phone charger 2 is inserted into the mobile phone 6 via the connector 4 (4a to 4c) for charging, and FIG. 6 is a rear view of the connector 4a. The other connectors 4b and 4c have the same configuration. Hereinafter, the mobile phone charger 2 is simply referred to as a charger 2.

  Note that the specifications of the power terminal of the mobile phone 6 differ depending on the FOMA system, CDMA system, PDC system, etc., and the mobile terminal portion 16 of the connector 4 to be attached to the power terminal according to this specification. The specifications are different. In FIG. 1, the connector 4 having a specification corresponding to the FOMA method is shown as a connector 4a, the connector 4 having a specification corresponding to the CDMA method is shown as a connector 4b, and the connector 4 having a specification corresponding to the PDC method is shown as a connector 4c.

  The connector 4 has a function of connecting the charger 2 and the mobile phone 6, and as shown in FIG. 4, the upper connector case 11, the lower connector case 12 and the terminal portion 13 are the main components, and these are acrylic, polycarbonate , ABS (Acrylonitrile Butadiene Styrene) and other synthetic resins.

  The terminal portion 13 is formed by a base 15 having convex projections 14 formed on the upper and lower surfaces and a mobile terminal portion 16 provided so as to protrude from the base 15, and penetrates the base 15 to form a terminal fitting. 17 is provided. One end of the terminal fitting 17 constitutes a terminal 18 in the portable terminal, and the other end constitutes a charger side terminal portion 19.

  Although the specifications such as the dimensions of the portable terminal 16 differ according to the shape of the power terminal of the mobile phone 6, the base 15 is formed with the same dimensions and the like regardless of the type. . FIG. 12 is a view of the portable side terminal portion 16 of each type of connector 4a-4c, and the width La, height Lb, and depth Lc (see FIG. 4) of the base 15 are the same values for each connector 4a-4c. It has become.

As shown in FIG. 4, the upper surface of the lower connector case 12 has two surfaces 20 a and 20 b and forms a sliding surface 20 when the connector 4 is inserted into the charger 2 as will be described later. The two surfaces 20a and 20b are connected via a step surface 20c, the step surface 20c is inclined, and the step is set to L1.
In addition, the inner wall of the lower connector case 12 in the direction of the mobile terminal portion 16 is formed with a recess 21 that forms a base fitting portion into which the convex protrusion 14 of the base 15 is fitted, and the other charger side terminal portion. 19 is formed with a terminal recess 23 through which a power supply terminal 22 described later passes.

  The upper connector case 11 is provided with a substrate 25 provided with a terminal plate 24 whose surface is plated with a metal such as gold, nickel, chromium or tin and connected to the charger side terminal portion 19 of the terminal fitting 17 by lead-free solder or the like. The substrate 25 is disposed so as to form the bottom surface of the terminal recess 23. Further, a concave portion 21 into which the convex projection 14 of the base 15 is fitted is formed on the inner wall of the upper connector case 11, and the engagement projection 26 of the charger 2 is formed on the upper surface in the direction of the charger side terminal portion 19. An engaging groove 27 is formed to engage with.

  When the terminal plate 24 is gold-plated, in particular, the terminal plate 24 can be prevented from oxidizing to increase the contact resistance with the power supply terminal 22, and since the gold is soft, the power supply terminal 22 is delicately Even if it is deformed, there is an advantage that it can be reliably contacted.

  As shown in FIG. 1, three terminal boards 24 are provided via a space 65, but two are electrodes for positive and negative power supplies, and the remaining one is a charger 2 and a mobile phone 6. The circuit board 49 to be described later has this function.

  The upper connector case 11 and the lower connector case 12 are integrated with the terminal portion 13 interposed therebetween by means such as welding, engagement, and adhesion. At this time, as described above, even if the dimensions of the portable terminal portion 16 in the terminal portion 13 are different, since the base 15 is formed in the same size, the terminal portion 13 for the PDC method, the CDMA method, and the FOMA method is used. On the other hand, the common upper connector case 11 and lower connector case 12 can be used, and the cost can be reduced by sharing the members.

  Next, the configuration of the charger 2 will be described. The charger 2 includes a charger main body 31 that is a case main body in which the battery 30 is accommodated, and a cap 32 that forms a lid of the charger main body 31. The charger main body 31 and the cap 32 are made of acrylic, polycarbonate, ABS, or the like. The synthetic resin is used.

  As the battery 30, various batteries such as an alkaline battery, a manganese battery, a nickel cadmium battery, a nickel metal hydride battery, a lithium ion battery, a nickel manganese battery, and an oxyride battery can be used. In particular, alkaline batteries, nickel manganese batteries, and oxyride batteries are preferred because of their large power capacity.

  The charger main body 31 includes an upper case 34 and a lower case 35, which are welded, bonded, or engaged to form an integral charger main body 31, and on the inner bottom (for example, the left side in FIG. 2) A bottom plate 36 is provided, and a battery terminal 37 is provided on the bottom plate 36.

  Further, an opening 38 into which the cap 32 is fitted is provided in the head of the charger main body 31 (for example, the right side in FIG. 2), and a cap engaging portion 39 is provided around the inner wall near the opening.

The cap 32 includes an upper cap material 41 and a lower cap material 42, which are welded, bonded, and engaged to form an integral cap 32 that is narrowed toward the top.
The cap 32 is provided inside a cap engaged portion 45 provided around the outer wall of the end portion on the opening 38 side, a lock portion 47 provided on the upper surface, and a connector insertion hole 48 provided on the top side. A circuit board 49 which is a charging circuit.

  The cap engaged portion 45 is provided so as to protrude from the periphery of the outer wall in the vicinity of the end on the case main body opening side, and the cap 32 and the charger main body 31 are pushed by pushing the cap 32 into the opening 38 of the charger main body 31. The cap engaged portion 45 is fitted into the cap engaging portion 39 so that the cap 32 and the charger main body 31 are engaged. The battery 30 is taken in and out from the opening 38 of the charger main body 31.

  The connector insertion hole 48 is a substantially rectangular opening through which the connector 4 is inserted and removed, and is provided at the top of the cap 32. At this time, the wall thickness t1 around which the connector insertion hole 48 is formed is set to be appropriately thicker than the wall thickness t2 of other portions as shown in FIG. It has become possible.

  The lock portion 47 includes a button hole 50 provided in an opening in the upper cap member 41, a lock arm 51 whose one end is loosely fitted in the button hole 50, and a biasing portion 52 that biases the lock arm 51. Yes.

  One end of the lock arm 51 is formed in substantially the same shape as the button hole 50, the operation button 55 is loosely fitted in the button hole 50, and the engagement protrusion 26 protruding in the direction of the lower cap member 42 is formed at the other end. A swing pin (not shown) to be inserted into a pin hole (not shown) formed in the upper cap material 41 is formed on the left and right of the substantially intermediate portion. As shown in FIG. 7, the engaging protrusion 26 is formed to have an appropriately wide lateral width and its tip is formed at an acute angle.

  The urging portion 52 includes an urging material support plate 56 formed by extending the upper cap material 41 to the lower side of the operation button 55 in an L shape, and between the urging material support plate 56 and the operation button 55. And a coil spring 58 that urges the operation button 55 toward the surface of the upper cap member 41 (that is, urges the engaging protrusion 26 toward the lower cap member 42). .

  The operation button 55 urged by the urging portion 52 is formed so as to be flush with the upper cap material 41 in a normal state, and is engaged with the connector 4 when it is lightly touched by the charger 2. Is not released.

  In the following description, the coil spring 58 is described as an example of the urging portion 52, but an elastic body such as a leaf spring, a sponge, or a balloon may be used, and as shown in FIG. The configuration may be such that the operation button 55 is urged by bending the distal end portion of the urging member support plate 56 into a U shape so as to utilize elasticity.

  The circuit board 49 has a thickness L2 that is appropriately smaller than the step L1 of the step surface 20c in the lower connector case 12 (L2 ≦ L1), and is fixedly provided to the lower cap material 42, and at least two power supply terminals 22 are provided. It is fixed.

The power supply terminal 22 is connected to a battery terminal 60 provided on the lower cap material 42 and functions as a power supply path from the charger main body 31 via the circuit board 49.
The power supply terminal 22 has a generally “H” shape in a side view formed of a metal material rich in elasticity such as phosphor bronze, and a bent portion thereof is in contact with the terminal plate 24 of the connector 4 by elastic force. Yes.

Next, a case where the mobile phone 6 is charged using the charger 2 and the connector 4 having this configuration will be described.
In this case, for convenience of explanation, a case where the connector 4 is first inserted into the charger 2 and then the mobile phone 6 is connected will be described as an example.

  First, the cap 32 is removed from the charger main body 31, the four AA alkaline batteries 30 are inserted, and the cap 32 is pushed into the opening of the charger main body 31. By this pushing, the cap engaged portion 45 comes into contact with the cap engaging portion 39, and the charger main body 31 and the cap 32 are slightly elastically deformed and fitted together.

When the battery capacity of the mobile phone 6 decreases at the destination or the like with the battery 30 loaded in this way, the connector 4 is inserted into the connector insertion hole 48 of the charger 2.
At this time, the connector 4 is adapted to the method of the mobile phone 6 to be used, and when the user uses the mobile phone 6 of a plurality of methods, the connector 4 is carried.
Since the connector 4 has a size slightly larger than that of the caramel, even if the plurality of connectors 4 are carried, there is no problem in handling because they become luggage.

  Then, as shown in FIG. 9, when the connector 4 is inserted into the connector insertion hole 48, the end portion of the connector 4 comes into contact with the engagement protrusion 26 of the lock portion 47, lifts the engagement protrusion 26, and 24 comes into contact with the power supply terminal 22 and rubs while elastically deforming the power supply terminal 22.

  At this time, if the space between the circuit board 49 and the lock arm 51 is a space 62, the connector 4 may be pushed too much, but the sliding surface 20 of the connector 4 has an end portion of the circuit board 49. Since the step surface 20 c is provided so as to come into contact with the circuit board 49, insertion is restricted when the step surface 20 c comes into contact with the circuit board 49. A partition or the like may be provided to prevent the connector from being pushed too much into the space 62.

  Note that when the connector 4 is inserted into the connector insertion hole 48, as shown in FIG. 10, there is an attempt to insert the connector 4 in an inverted state (the engagement groove 27 is on the circuit board 49 side). Since it hits the connector insertion hole 48 of the upper cap material 41, it is possible to easily know erroneous insertion.

  Therefore, if the user inserts the connector 4 until the intrusion stops without worrying about the amount of insertion, the terminal plate 24 and the power supply terminal 22 can be reliably brought into contact with each other, and convenience is improved. Improves charging reliability.

In this way, when the connector 4 is inserted to a predetermined position, the tip of the engagement protrusion 26 is fitted into the engagement groove 27, and the insertion of the connector 4 is completed.
In the state where the connector 4 is inserted, the engaging protrusion 26 biased by the coil spring 58 presses the connector 4 toward the circuit board 49, and the elastically deformed power supply terminal 22 engages the connector 4. Since the power supply terminal 22 and the terminal plate 24 are in close contact with each other and the resistance at the contact portion does not increase, a good electrical contact state is achieved.

By the way, the dimension of the connector insertion hole 48 is designed to be appropriately larger than the outer dimension of the connector 4.
This is to allow the connector 4 to be easily inserted into and removed from the charger 2. However, due to such a dimensional difference, the connector 4 may sway as shown in FIG. 7 or as shown in FIG. There is a situation of vertical swing.
However, since the front end portion of the engaging protrusion 26 has a predetermined width and the engaging groove 27 is also a groove having a predetermined width, the engaging protrusion 26 and the engaging groove 27 are in substantially surface contact (at least two points). This is the state of contact). Therefore, it is possible to regulate the side shake.

Of course, when the insertion amount of the connector 4 is large, the engagement protrusion 26 and the engagement groove 27 are not brought into the above-described surface contact state.
As described above, the stepped surface 20c of the connector 4 abuts on the circuit board 49 and the insertion amount thereof is regulated. The contact position between 20c and the circuit board 49 must be set with high accuracy, which causes a significant cost increase.

  Therefore, in the present invention, the step surface 20 c is inclined toward the circuit board 49. Thus, if the insertion is restricted when the tip of the engaging protrusion 26 is positioned in the engaging groove 27, the connector 4 is pushed toward the circuit board 49 by the engaging protrusion 26 when the insertion force is removed thereafter. Since the stepped surface 20c slides down along the end of the circuit board 49, the engagement protrusion 26 and the engagement groove 27 are automatically brought into surface contact with each other, and the above-described high-precision processing and assembly are performed. It becomes unnecessary and it becomes possible to suppress an increase in cost.

As described above, the connector 4 is inserted into the charger 2, the mobile phone 6 is inserted into the connector 4, and charging is started. At this time, the charger 2 may be touched during charging. Even in such a case, the connector 4 is locked by the lock portion 47. It becomes possible to suppress the inconvenience that it is not performed.
When charging is completed, the cellular phone 6 is removed from the connector 4.

  In the embodiment described so far, the connector 4, the cap 32, and the charger main body 31 have been described with respect to the case where the vertically divided members are integrated by a method such as welding, adhesion, or engagement. The invention is not limited to this, and may be an integrally molded product. In this case, for example, it goes without saying that the connector case is integrally formed with the terminal portion 13 in between.

  In the above description, the case where the dimensions of the base 15 are the same even though the cellular phone 6 is a PDC system, CDMA system, FOMA system, or the like has been described. However, the present invention is not limited to this. Instead, the dimensions may be different.

It is a perspective view of the charger for mobile phones. It is sectional drawing of a charger main body. It is a perspective view which shows the state which removed the cap from the charger main body. It is sectional drawing of the connector for chargers. It is the figure which showed the mode at the time of inserting and charging the charger for mobile phones via a connector to a mobile phone. It is a reverse view of a connector. It is a top view which shows the condition where the engagement protrusion is engaging with the engagement groove | channel of the connector for chargers. It is sectional drawing at the time of bending the front-end | tip part of an urging | biasing material support plate in U shape, and comprising the urging | biasing part. It is a figure which shows the insertion procedure at the time of inserting the connector for chargers in a charger. It is sectional drawing which shows the insertion state at the time of inserting with the front and back of the connector for chargers reversed. It is a figure which shows the state by which the connector for chargers is pushed by the engagement protrusion. It is a figure from the portable terminal part side in the connector from which a specification differs.

Explanation of symbols

2 charger (cell phone charger)
4 Connector (Connector)
6 mobile phone 11 upper connector case 12 lower connector case 13 terminal portion 14 convex projection 15 base 16 mobile terminal portion 17 terminal fitting 18 terminal 19 charger side terminal portion 20 sliding surface 20c step surface 20a, 20b surface 21 recess 22 power supply terminal 23 terminal recess 24 terminal plate 25 substrate 26 engagement protrusion 27 engagement groove 30 battery 31 charger main body 32 cap 34 upper case 35 lower case 36 bottom plate 37 (60) battery terminal 38 opening 39 cap engagement portion 41 Upper cap material 42 Lower cap material 45 Cap engaged portion 47 Lock portion 48 Connector insertion hole 49 Circuit board 50 Button hole 51 Lock arm 52 Biasing portion 55 Operation button 56 Biasing material support plate 58 Coil spring 62 Space

Claims (3)

A battery body for supplying charging power to mobile phones of various types is housed, and a charger body provided with a connector insertion hole at the tip thereof;
It is possible to use a common upper connector case and a lower connector case for a portable terminal portion that is formed in accordance with the specifications of the power supply terminal in the mobile phone and is detachably attached to the power supply terminal. And projecting to a base having the same dimensions as this, and the base is provided with a terminal at one end of the portable terminal and the other end penetrating a terminal fitting constituting the charger side terminal portion. Terminal part,
And a charger for a mobile phone , comprising: a connector integrated with a base of the terminal portion sandwiched between an upper connector case and a lower connector case. In the charger body, a space is formed in the head of the charger, and a circuit board for detecting that the mobile phone is connected in the space and performing charging is disposed.
The connector is provided with two terminal plates that form two electrodes for positive and negative power sources, together with a terminal plate for detecting connection with the mobile phone, and
2. The cellular phone according to claim 1, wherein a stepped surface is formed in contact with an end portion of the circuit board to restrict insertion of the connector and prevent insertion in an inverted state. Charger. The connector has an engaging groove,
When the connector is inserted into the connector insertion hole, the charger main body is formed with an engagement protrusion that is urged by an elastic body and engages the engagement groove while pressing the bottom surface of the engagement groove. And
The circuit board is provided with an engagement protrusion and a power supply terminal that presses the terminal board by being elastically deformed by contacting the terminal board and is in close contact with the terminal board. The mobile phone charger according to claim 2 .

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