JP4193813B2 - Charger for portable devices - Google Patents

Description

  The present invention relates to a charging device for a portable device that, when a portable device is mounted, charges a secondary battery of the portable device by bringing a power feeding terminal into contact with a power receiving terminal of the portable device.

An example of this type of charging device is described in Patent Document 1. This is a type in which the mobile device is placed horizontally on the housing. When the mobile device is placed on the housing, a pair of power supply terminals provided in the housing are opened from the opening formed on the upper surface of the housing by the link mechanism. It protrudes outward from the upper part, contacts the power receiving terminal of the mobile device, and charges the secondary battery of the mobile device.
JP2003-9409

In the charging device described in Patent Document 1, since the opening portion through which the power supply terminal enters and exits faces upward, dust floating in the air may enter the housing from the opening portion. The charging terminal of the charging device does not protrude outside from the opening of the housing when not charging, but the contact part is located inside the opening, so that dust floating in the air is not open. There is a risk of adhering to the contact portion of the power supply terminal facing the terminal. Dust adhering to the contact portion of the power supply terminal gradually accumulates in the contact portion due to long-term use, which may impede electrical contact with the power receiving terminal of the portable device and impair the charging function.

  Such adhesion of dust to the power supply terminal is likely to occur when the opening for projecting the power supply terminal to the outside is upward. However, since dust floating in the air moves in any way depending on the air flow, the flow of air is not limited to the case where the opening is upward, and whether it is horizontal or even downward. Depending on the condition, there is a possibility of adhering to the power supply terminal facing the opening.

  This invention is made | formed in view of said situation, The objective is to provide the charging device for portable devices which can prevent adhesion of dust to a power feeding terminal.

In order to achieve the above object, the present invention includes a main body having a mounting portion on which a portable device is mounted, and is provided in the main body and protrudes from the opening formed in the mounting portion toward the mounting portion. A power supply terminal that contacts a power receiving terminal of the mobile device mounted on the mounting unit and charges a secondary battery included in the mobile device, and when the mobile device is not mounted, the power supply terminal is closer to the mounting unit than the power supply terminal. A portable device charging device comprising: a dustproof device that prevents dust from adhering to the power supply terminal by covering the power supply terminal; and the power supply terminal can be moved in and out of the mounting portion through the opening. The dustproof device is a lid member capable of opening and closing the opening, and when operating in a direction to open the opening, the power supply terminal projects from the opening toward the mounting portion. In the direction A lid member having a first cam part to be displaced and a second cam part to displace the power supply terminal from the mounting part to the inside of the main body when operating in a direction to close the opening. When the portable device is not attached, the power supply terminal is immersed inside the main body, and the lid member closes the opening to prevent dust from adhering to the power supply terminal. .

According to the above configuration, when the portable device is not attached, the power supply terminal is immersed in the main body, and the opening member after the power supply terminal is immersed closes the lid member, thereby preventing dust from adhering to the power supply terminal. Can do. In addition, since the power supply terminal is caused to protrude and retract by the first and second cam portions of the lid member, unlike the configuration in which the lid member itself comes into contact with the power supply terminal and forcibly enters the main body, an excessive force is applied to the power supply terminal. Can be prevented in advance, and deformation of the power supply terminal can be prevented.

Further, in the present invention, a biasing means for biasing the lid member in a direction to close the opening is provided, and the lid member is closed by the biasing force of the biasing means when the portable device is not attached. When the portable device is attached to the attachment portion, the lid member can be configured to open against the urging force of the urging means by the weight of the portable device to open the opening.
If comprised in this way, since opening and closing of the opening part by a cover member can be automatically performed according to attachment or detachment of a portable apparatus, the opening / closing operation by a user is not required.

[ Reference example ]
Hereinafter, reference examples of the present invention will be described with reference to FIGS. This reference example is applied to a charging device of a hand-held bar code reader (hereinafter referred to as BHT). First, as shown in FIGS. 3 and 6, the BHT 1 as a portable device has various keys 2 arranged in the lower half of the front surface, and a pair of power receiving terminals 3 and 3 at the lower end of the rear portion. Is provided. The BHT 1 incorporates a battery (not shown) as an operating power source. This battery is a rechargeable secondary battery.

  FIG. 1 shows a charging device 4 for charging the secondary battery of the BHT 1. The main body 5 of the charging device 4 is made of plastic, and the main body 5 is formed with a concave receiving portion 6 that functions as a mounting portion for receiving the lower half of the BHT 1 and holding the BHT 1. A rectangular opening 7 is formed in the lower portion of the rear surface of the receiving portion 6, and contact portions 8 a and 8 a of a pair of power supply terminals 8 and 8 provided in the main body 5 are formed from the opening 7. It can protrude into the receiving portion 6. The pair of power supply terminals 8 and 8 are connected to a charging circuit (not shown) in the main body 5 and contact the power receiving terminals 3 and 3 of the BHT 1 to charge the secondary battery.

  The power supply terminals 8 and 8 are made of spring wire, and the contact portions 8a and 8a are bent and formed in a mountain shape. Torsion coil portions 8 b and 8 b are formed at one end of the contact portions 8 a and 8 a, and the torsion coil portions 8 b and 8 b are fitted to a shaft portion 9 provided in the main body 5. By fitting the torsion coil portions 8 b and 8 b to the shaft portion 9, the power supply terminals 8 and 8 are rotated about the shaft portion 9 in the arrow A direction and the arrow B direction that are protruding and retracting with respect to the receiving portion 6. It becomes possible.

  The winding ends 8 c and 8 c of the torsion coil portions 8 b and 8 b are hooked on a hanging portion 10 formed on the main body 5. As a result, the torsion coil portions 8b and 8b generate a biasing force that biases the entire power supply terminals 8 and 8 in the protruding direction indicated by the arrow A, and the power supply terminals 8 and 8 are rotated in the arrow A direction by the biasing force. The contact portions 8a and 8a are projected from the opening 7 into the receiving portion 6 by being energized.

  An interlocking member 11 is disposed between the pair of power supply terminals 8 and 8 in the main body 5. The interlocking member 11 is formed such that a cylindrical portion 11b is formed at one end portion of a sliding contact portion 11a bent and formed in a mountain shape, and a pressing portion 11c is protruded from the left and right sides at the other end portion. The cylindrical portion 11b of the interlocking member 11 is fitted to the shaft portion 9, and the interlocking member 11 can be rotated in the arrow A direction and the arrow B direction around the shaft portion 9. . In a state where the interlocking member 11 is supported by the shaft portion 9, the pressing portion 11 c is located above the locking portions 8 d and 8 d formed at the distal end portions of the contact portions 8 a and 8 a of the pair of power supply terminals 8 and 8 ( It is located on the opening 7 side).

  When the pressing portion 11c is positioned above the locking portions 8d and 8d, when the power feeding terminals 8 and 8 are rotated in the direction of arrow A by the urging force of the torsion coil portions 8b and 8b, the power feeding terminal is connected to the pressing portion 11c. The engaging portions 8d and 8d of 8 and 8 come into contact with each other from the rear to rotate the interlocking member 11 together with the power supply terminals 8 and 8 in the arrow A direction. As a result, not only the contact portions 8 a and 8 a of the power supply members 8 and 8 but also the sliding contact portion 11 a of the interlocking member 11 protrudes from the opening 7 into the receiving portion 6.

  The amount of protrusion of the contact portions 8a and 8a and the sliding contact portion 11a into the receiving portion 6 at this time is such that the locking portions 8d and 8d at the tip end portions of the contact portions 8a and 8a are passed through the pressing portion 11c of the interlocking member 11. It is regulated by abutting against the lower surface of the lower end of the opening 7 to regulate the rotation of the power supply terminals 8 and 8 in the direction of arrow A. The amount of protrusion of the restricted contact portions 8a and 8a and the sliding contact portion 11a into the receiving portion 6 is larger (higher) in the sliding contact portion 11a than in the contact portions 8a and 8a.

  A lid member 12 serving as a dustproof device is disposed below the rear part in the receiving part 6 so as to be in contact with the rear surface of the receiving part 6 and to be slidable in the vertical direction. And the cover member 12 opens and closes the opening part 7 by the slide of the up-down direction. At the lower end of the lid member 12, a base part 12a for receiving the BHT 1 inserted into the receiving part 6 is formed. Between the base part 12a and the bottom surface of the receiving part 6, the lid member 12 is placed upward. A compression coil spring 13 is provided as a biasing means for biasing.

  The lid member 12 is always pushed up to the position where the opening 7 is closed by the urging force of the compression coil spring 13. In a state in which the opening 7 is closed by the lid member 12, the sliding contact portion 11 a of the interlocking member 11 is pressed by the lid member 12 and rotated in the direction of arrow B, that is, in a state of being submerged in the main body 5. . Then, the interlocking member 11 is in a state where the locking portions 8d and 8d of the power supply terminals 8 and 8 are pressed by the pressing portion 11c along with the rotation in the direction of the arrow B, whereby the power supply terminals 8 and 8 are interlocked. The member 11 is rotated in the direction of arrow B by the member 11 and is immersed in the main body 5.

  The lid member 12 is formed with an opening 14 having a size similar to that of the opening 7 of the receiving portion 6 extending from the pedestal 12a to above the pedestal 12a. When the BHT 1 is inserted into the receiving portion 6, the lid member 12 slides downward against the urging force of the compression coil spring 13 by receiving the weight of the BHT 1 at the base portion 12 a. The opening part 14 is made to coincide with the opening part 7 of the receiving part 6 to open the opening part 7.

  When the opening 7 is opened, the power supply terminals 8 and 8 are rotated in the direction of the arrow A which is the protruding direction by the urging force of the torsion coil parts 8b and 8b, and the contact parts 8a and 8a are connected to the power receiving terminals 3 and 3 of the BHT1. Make contact. At this time, the sliding contact portion 11a of the interlocking member 11 protruding into the receiving portion 6 more than the contact portions 8a, 8a contacts the BHT 1 until the contact portions 8a, 8a contact the power receiving terminals 3, 3 in the direction of arrow A. 6, a groove 15 is formed in the lower part of the back surface of the BHT 1 so as to be positioned between the pair of power receiving terminals 3 and 3 as shown in FIG.

Next, the operation of the above configuration will be described.
When the BHT 1 is not inserted into the receiving portion 6 (non-charging), the opening 7 of the receiving portion 6 is closed by the lid member 12 as shown in FIGS. For this reason, dust is prevented from adhering to the power supply terminals 8, 8, and when the contact portions 8 a, 8 a come into contact with the power receiving terminals 3, 3, the electric contact is not hindered.

  In order to charge the secondary battery of BHT 1, BHT 1 is inserted into receiving portion 6 of main body 5 of charging device 4. Then, since BHT1 comes to be put on the base part 12a of the lid member 12, the lid member 12 slides downward against the urging force of the compression coil spring 13 and opens the opening 7 of the receiving part 6. Then, since the sliding contact portion 11a of the interlocking member 11 is detached from the lid member 12, the power supply terminals 8 and 8 rotate in the direction of arrow A while pushing up the interlocking member 11 by the urging force of the torsion coil portions 8b and 8b. And as shown in FIG. 4, it contacts the receiving terminals 3 and 3 of BHT1. At this time, the sliding contact portion 11a of the interlocking member 11 enters the groove 15 of the BHT 1, and the power feeding terminals 8 and 8 are brought into contact with the power receiving terminals 3 and 3 with an appropriate contact pressure by the urging force of the torsion coil portions 8b and 8b. It can be so. Thereby, the secondary battery of BHT1 is charged by the charging device 4.

  When charging of the secondary battery is completed, BHT 1 is extracted from the receiving unit 6. Then, the lid member 12 slides upward by the urging force of the compression coil spring 13 to close the opening 7. When the lid member 12 starts to move upward at this time, the lower end portion of the opening 14 of the lid member 12 is interlocked. Since the slidable contact with the lower piece of the mountain-shaped slidable contact portion 11a of the member 11 and slides upward while pushing down the slidable contact portion 11a, the interlocking member 11 rotates in the direction of arrow B and enters into the main body 5. I will die. As the interlocking member 11 rotates in the arrow B direction, the pressing portion 11c pushes down the locking portions 8d and 8d of the pair of power supply terminals 8 and 8 so that the pair of power supply terminals 8 and 8 are moved in the arrow B direction. Turn to.

  As described above, the interlocking member 11 does not bring the lid member 12 into contact with the power supply terminals 8, 8, and moves the power supply terminals 8, 8 in the main body 5 in conjunction with the vertical sliding (opening / closing operation) of the lid member 12. Or immerse into the receiving part 6 from the main body 5. Thus, unlike the case where the lid member 12 is brought into direct contact with the contact portions 8a, 8a of the power supply terminals 8, 8, there is no possibility that an unreasonable force acts on the power supply terminals 8, 8, so that the power is deformed and received. There is no problem that the contact with the terminals 3 and 3 is disturbed.

[ One Embodiment]
7 to 9 show an embodiment of the present invention. While describing the implementation form of this below, in the 7 to 9, the detailed description with the same reference numerals are assigned the same parts as those described in the above Reference Example to be omitted, different portions I will explain only.

  The receiving part 16 of the main body 5 of the charging device 4 is not a recessed part with a bottom, but is formed as a cylindrical part without a bottom. On the rear surface of the receiving portion 16, an opening 17 for projecting the power supply terminals 8 and 8 into the receiving portion 16 is formed. A lid member 18 as a dustproof device that opens and closes the opening 17 is provided in the main body 5 so as to be movable up and down.

  A compression coil spring 13 is provided between the lid member 18 and the bottom of the main body 5. Then, the cover member 18 is always held in the pushed-up position by the urging force of the compression coil spring 13, and the opening 17 for projecting the power supply terminals 8 and 8 into the receiving portion 16 is substantially closed. Is in a state. The reason why the lower half of the opening 17 is not closed is to allow the lid member 18 to move downward.

  In addition, a base portion 18a that receives the BHT 1 protrudes from the lower end portion of the lid member 18. When the BHT 1 is placed on the base 18a, the lid member 18 moves downward against the urging force of the compression coil spring 13 due to the weight of the BHT 1, as shown in FIGS. To open.

  The lid member 18 includes a first cam portion 19 that contacts the winding ends 8c and 8c of the torsion coil portions 8b and 8b of the power supply terminals 8 and 8 and a second cam portion that contacts the contact portions 8a and 8a of the power supply terminals 8 and 8. A cam portion 20 is formed. When the lid member 18 moves downward (opening operation), the first cam portion 19 pushes the winding ends 8c and 8c downward to rotate the power supply terminals 8 and 8 in the direction of arrow A. Thus, the power feeding terminals 8 and 8 bring the contact portions 8a and 8a into contact with the power receiving terminals 3 and 3 of the BHT 1.

On the other hand, the second cam portion 20 feeds power by pushing the contact portions 8a and 8a upward when the lid member 18 moves upward (closed operation) from the position of FIG. 9 as the BHT 1 is extracted from the receiving portion 16. The terminals 8 and 8 are rotated in the direction of arrow B. As a result, the power supply terminals 8 and 8 are immersed in the main body 5, and then the opening 17 is closed by the lid member 18 so that dust does not adhere to the power supply terminals 8 and 8.
As described above, according to the present embodiment, the receiving portion 18 can be caused to appear and disappear without applying an excessive force to the power supply terminals 8 and 8.

[Other Embodiments]
In one embodiment of FIGS. 7 to 9, omitting the compression coil spring 13, but it may also be configured for vertically moving the user's hand operating the lid member 18.

Sectional drawing which shows the reference example of this invention in the state at the time of non-charging Enlarged cross-sectional view of the main part shown in a non-charged state Sectional view of the charging device shown in the state during charging Enlarged sectional view of the main part shown in the state of charging Exploded perspective view of the main part The perspective view which shows the back side of BHT Sectional drawing which shows one Embodiment of this invention in the state at the time of non-charging Sectional drawing which shows the middle of inserting BHT into a receiving part Sectional view showing the state when charging

Explanation of symbols

In the drawings, 1 is a BHT (portable device), 3 is a power receiving terminal, 4 is a charging device, 5 is a main body, 6 is a receiving portion (mounting portion), 7 is an opening, 8 is a power supply terminal, 8a is a contact portion, 11 Is an interlocking member, 12 is a lid member (dust-proof device), 13 is a compression coil spring (biasing means), 14 is an opening, 16 is a receiving portion (mounting portion), 17 is an opening, and 18 is a lid member (dust-proof device). ), 19 is a first cam portion, and 20 is a second cam portion .

Claims (2)

A main body having a mounting portion for mounting a portable device;
Charging a secondary battery of the portable device that is provided in the main body, protrudes from the opening formed in the mounting portion to the mounting portion side, contacts a power receiving terminal of the portable device mounted on the mounting portion A power supply terminal to
A dustproof device that prevents dust from adhering to the power supply terminal by covering the power supply terminal on the mounting portion side of the power supply terminal when the portable device is not mounted;
In the charging device for portable devices provided with
The power supply terminal is configured to be able to protrude and retract with respect to the mounting portion through the opening, and the dustproof device is a lid member that can open and close the opening, and operates in a direction to open the opening. A first cam portion that displaces the power supply terminal in a direction protruding from the opening portion toward the mounting portion side, and when operating in a direction to close the opening portion, the power supply terminal is moved from the mounting portion to the inside of the main body. A cover member having a second cam portion that is displaced in a direction to sag,
When the portable device is not attached, the power supply terminal is immersed inside the main body, and the lid member closes the opening to prevent dust from adhering to the power supply terminal. Charging device. In the portable device charging device according to claim 1,
An urging means for urging the lid member in a direction to close the opening is provided,
The lid member is held in a position where the opening is closed by the urging force of the urging means when the portable device is not attached, and when the portable device is attached to the attachment portion, A charging device for a portable device, which operates against a biasing force of the biasing means by weight to open the opening .

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