JP2012055567A - External equipment connection structure of portable apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure capable of preventing terminals from being exposed to outside without using a cover for the terminals which is a separate part in a portable equipment which can be driven by a battery.SOLUTION: The writing-in connector 440 (external equipment connection terminal) for rewriting the setting of a control circuit mounted while being connected to the external equipment is arranged in the main circuit substrate 400 and the opening 22c for the connector for exposing the writing-in connector 440 in the accommodating part 21 is formed in the partitioning wall 22 of the accommodating part 21 for accommodating the battery 330. The connector 440 for rewriting can be connected from outside when removing the battery 303 while opening the battery cover 50 and the setting of the control circuit of the tube pump 100 can be changed by operating while connecting the cable connected to the external equipment to the connector 440.

Description

  The present invention relates to a connection structure for connecting an external device for writing software or data such as a microcomputer or EEPROM mounted on a portable device driven by a battery.

  Some portable devices have a connection terminal with an external device so that a program for operating the portable device and data used for processing can be rewritten using an external device such as a microcomputer. A connection structure of an external device is disclosed in, for example, Patent Document 1. In FIG. 1 and paragraph 0022 of Patent Document 1, the mobile phone terminal 1 is inserted into the cradle 2 to perform various types of information communication, and a terminal for connecting an external device is provided at the bottom of the mobile phone terminal 1. Is disclosed.

JP 2008-048197 A FIG. 1, paragraph 0022

However, the structure of Patent Document 1 cannot be applied to a portable device having a waterproof structure, for example, because the external device connection terminal of the mobile phone terminal is exposed to the outside. Although it is conceivable to provide a cover on the terminal portion, in this case, a new part is required, resulting in an increase in cost.
The present invention has been made in view of the above-described problems of the prior art, and in a portable device that can be driven by a battery, it is possible to prevent the terminals from being exposed to the outside without using a separate terminal cover. The object is to provide a possible connection structure.

  In order to achieve the above object, the external device connection structure of the portable device according to the present invention is provided with an external device for writing software, data, etc. to a memory such as a microcomputer or ROM mounted on a battery-driven portable device. In the structure for connection, the main body of the mobile device is provided with a housing portion having a lid for housing the battery and a circuit board, and the circuit board is provided with an external device connection terminal connected to the external device, An opening is formed in the housing portion so that the external device connection terminal is exposed in the housing portion when the battery is removed from the housing portion.

  As for said cover, it is desirable to cover a accommodating part watertightly. Moreover, as a portable apparatus, it can apply to the tube pump which transfers the liquid in a tube by making it deform | transform so that a flexible tube may be handled with a drive part.

  According to the present invention, by removing the battery from the housing portion, the external device connection terminal can be exposed to the housing portion, and the external device can be connected using the cable. Since the external device is connected when the portable device for changing the program or setting of the portable device is not in operation, there is no problem even if the battery and the external connection terminal can be exclusively used. In addition, by using an existing battery housing portion, an external device connection terminal can be housed without providing a new cover or the like, and the device can be applied to a waterproof device.

It is a perspective view which shows the external appearance of the tube pump which is a portable apparatus to which the external apparatus connection structure which concerns on embodiment of this invention is applied. It is a top view which shows the tube pump of FIG. It is a rear view which shows the tube pump of FIG. It is a side view which shows the tube pump of FIG. It is a top view which shows the tube cassette assembled | attached to the tube pump of FIG. It is the perspective view which looked at the inside of the upper case at the time of isolate | separating the upper case and lower case of the tube pump of FIG. It is a bottom view of the circuit board arrange | positioned in the upper case of the tube pump shown by FIG. It is sectional drawing which follows the XIII-XIII line | wire of FIG. It is the perspective view which looked at the inside of the lower case when the upper case and the lower case of the tube pump of FIG. 1 were separated and the battery was removed, and the battery from above. It is sectional drawing which shows the state which removed the battery of the tube pump of FIG. It is a block diagram which shows the outline | summary of the control system of the tube pump of FIG.

  Hereinafter, an external device connection structure of a portable device according to an embodiment of the present invention will be described with reference to the drawings. In this embodiment, a tube pump is used as a portable device. FIG. 1 is a perspective view showing the appearance of the tube pump. Initially, the whole structure of the tube pump 100 is demonstrated based on FIGS. 1 to 4 show an appearance of a tube pump 100 according to an embodiment, FIG. 1 is a perspective view, FIG. 2 is a plan view, FIG. 3 is a rear view, and FIG. 4 is a side view.

  The tube pump 100 is formed in a substantially rectangular parallelepiped shape by combining the upper casing 10 and the lower casing 20, and a battery, a control circuit, a motor, and the like are housed in an interior surrounded by these casings.

  As shown in FIGS. 1 and 2, a plurality of operation buttons 11 including a power button are disposed on the upper casing 10, and a liquid crystal display (LCD) 12 as a display panel is attached to the center. ing.

  Moreover, the attachment part A which attaches the tube cassette 200 shown in FIG. 5 is formed in the right side of the upper surface of the upper casing 10. In the mounting portion A, a rotary shaft 13 of a built-in motor is led out at the center position, and is arranged so as to be vertically slidable around the rotary shaft 13 and is a circular spring plate urged upward by a built-in spring. 14. A tube holding block (hereinafter referred to as a sensor block) 30 in which a sensor to be described later is incorporated, and an interlock function attached in the vicinity of the sensor block 30 to assistly fix the tube cassette 200 to the mounting portion A. A stopper 40 is attached.

  The sensor block 30 includes first, second, and third protrusions 33 that are arranged in order so as to form first and second valley portions 31 and 32 through which tubes of the tube cassette 200 attached to the attachment portion A are passed. , 34 and 35 are formed integrally. The sensor block 30 is formed of a resin such as a PEEK material having excellent mechanical strength, wear resistance, and chemical resistance.

  On the back surface of the upper casing 10, an eject button 15 that is operated when removing the tube cassette 200 attached to the drive unit A and a lock lever 16 that locks the operation of the eject button 15 are attached.

  Further, as shown in FIG. 4, a battery cover 50 is attached to the side surface of the lower casing 20 as a lid that covers a later-described battery housing portion in a watertight manner. The battery cover 50 is rotatably provided with a lock operation member 51 for locking the battery cover 50 with respect to the lower casing 20 or for releasing the lock. By inserting a special key (not shown) into the groove formed in the lock operation member 51 and turning it, the lock and release can be switched.

  Further, on the side surface of the lower casing 20, a communication connector 60 and a power connector 70 are provided adjacent to the cover 50. The communication connector 60 is used, for example, when the tube pump 100 is connected to a PC or the like to input / output data, and the power connector 70 is used when the tube pump 100 is connected to an AC power source to operate.

  As shown in FIG. 5, the tube cassette 200 forms a cylindrical wall 212 along the outer periphery of the disk-shaped bottom plate 211, and a flexible tube 220 along the inner periphery of the cylindrical wall 212. The three rollers 230 are arranged so as to crush the tube 220, and a shaft hole 240 through which the rotary shaft 13 of the motor is inserted from the back of the mounting portion A is formed in the center of these rollers 230. ing.

  When the tube cassette 200 is attached to the tube pump 100, the hook-shaped protrusion formed on the bottom surface of the tube cassette 200 is aligned with the groove formed on the attachment portion A, and the spring plate 14 is pressed by the bottom plate 211 while not shown. Press down until the hook-shaped protrusion is locked by the locking mechanism. Thereby, the rotating shaft 13 contacts the peripheral surface of each roller, and one of the tubes 220, in this example, the upstream side (in side) is inserted into the first valley 31 of the sensor block 30. On the other hand, in this example, the downstream side (out side) is inserted into the second valley portion 32.

  When the tube cassette 200 is attached to the tube pump 100 and the motor is rotated to rotate the rotating shaft 13 in the clockwise direction in FIG. 2, the three rollers 230 engaged therewith rotate counterclockwise and rotate clockwise. Revolve. Thereby, the tube 220 is deformed in order so as to be handled, and the liquid in the tube 220 can be transferred. The rotating shaft 13 and the roller 230 of these motors constitute a drive unit that handles the tube 220. The sensor block 30 is arranged at a position where the tube 220 is led out from the drive unit.

  When removing the tube cassette 200 from the tube pump 100, the interlock by the stopper 40 is released, then the lock lever 16 is slid to release the lock, and the eject button 15 is pushed. Thereby, the lock mechanism is released, the spring plate 14 is raised by the action of a spring (not shown), and the tube cassette 200 can be removed from the attachment portion A.

  The tube pump 100 according to the present embodiment includes an end sensor that detects a reduction in the diameter of the tube 220, a block sensor that detects an increase in the diameter of the tube, and a transmission unit that configures a bubble sensor that detects bubbles in the tube. And a receiving unit are provided in the sensor block 30 (not shown).

  Next, the internal configuration of the tube pump will be described in detail with reference to FIGS. 6 is a perspective view of the inside of the upper case 10 viewed from below when the upper case 10 and the lower case 20 of the tube pump 100 of FIG. 1 are separated, and FIG. 7 is an upper view of the tube pump shown in FIG. FIG. 8 is a cross-sectional view taken along the line XIII-XIII of FIG. 7, and FIG. 9 is a diagram when the battery is removed by separating the upper case 10 and the lower case 20 from each other. FIG. 10 is a cross-sectional view showing a state where the inside of the lower case and the battery are viewed from above, and FIG. 10 is a state where the battery 303 of the tube pump 100 of FIG. 1 is removed. In the present embodiment, the state where the battery 303 is removed from the tube pump 100 constitutes the main body of the portable device.

  As shown in FIG. 6, a main circuit board 400 on which a control circuit is mounted is attached in the upper case 10, and a motor 306 is attached to a portion corresponding to the drive unit A via a motor board 500. ing. The circuit on the main circuit board 400 and the circuit on the motor board 500 are electrically connected by a flexible flat cable 501 that connects between connectors provided on each board.

  In addition to mounting various electronic components (not shown) on the main circuit board 400, as shown in FIGS. 7 and 8, a button battery 305 is attached by an electrode plate (not shown). An insulating cover 420 is fixed over the cover. Conventionally known means can be used for attaching the button battery 305 to the substrate.

  The cover 420 is made of resin, and is provided on a board part 420a parallel to the main circuit board 400, a frame part 420b provided perpendicularly to the board part 420a along the outer periphery, and left and right side parts of the board part 420a. The button battery 305 and a circuit part that is in an active state by supplying energy from the button battery 305 are accommodated in an internal space formed by the substrate part 420a and the frame part 420b. is doing. The cover 420 is positioned with respect to the main circuit board 400 by fitting protrusions formed at a plurality of positions on the surface of the frame part 420b that contacts the main circuit board 400 into holes formed in the main circuit board 400, and bonded. Primary fixing is performed using an agent, and secondary fixing is performed by soldering electrodes, which will be described later, to the main circuit board 400. A pair of electrode support portions 421a and 421b provided at both ends in the left-right direction in FIG. 7 of the cover 420 are formed with through holes perpendicular to the substrate.

  On the other hand, two electrodes 430a and 430b for battery connection are fixed independently on the main circuit board 400 by soldering. The electrodes 430a and 430b are formed in the same shape with a wire-like metal having a circular cross section. Hereinafter, one electrode 430a will be described as an example, but the same configuration is adopted for the other electrode 430b.

  As shown in FIG. 8, the electrode 430a has a rising portion 431a perpendicular to the main circuit board 400, and a contact portion 432a that is bent in a U shape in a plane perpendicular to the substrate and contacts a battery terminal. Then, it is bent at a right angle from the rising portion 431a and extends in parallel to the main circuit board 400, and is further bent at a right angle within the parallel plane to reach the contact portion 432a. The rising portion 431 a passes through the electrode support portion 421 a of the cover 420, and further passes through an attachment hole formed in the main circuit board 400 and is fixed by the solder 401.

  That is, the electrode 430 a is supported by the main circuit board 400 and the electrode support portion 421 a of the cover 420. When the electrode 430a is supported only by the main circuit board 400, when the contact portion 432a comes into contact with the battery terminal and a stress is generated, the stress is received only at the connection portion with the board, and the stress is applied to the board. give. On the other hand, by fixing the electrode 430a to the main circuit board 400 as described above and supporting and reinforcing it with the cover 420, the stress is distributed to the board and the cover, thereby reducing the stress applied to the board. Can be made. In addition, a guide groove is formed on the surface of the electrode support portion 421a of the cover 420 opposite to the main circuit board 400 so as to be continuous with the through hole, and the electrode 430a is parallel to the main circuit board 400. A portion bent vertically from the rising portion 431a is fitted into the guide groove, whereby rotation of the electrode 430a around the rising portion 431a is prevented. In this state, the cover 420 is firmly fixed via the electrode 430a by soldering the rising portion 431a of the electrode 430a.

  The main circuit board 400 is provided with a write connector (external device connection terminal) 440 for rewriting settings of a control circuit mounted by connecting an external device.

  As shown in FIGS. 9 and 10, the lower case 20 is formed with a housing portion 21 for housing the battery 303. The accommodating portion 21 is partitioned by a partition wall 22. As shown in FIG. 9, the partition wall 22 is formed with a pair of electrode openings 22 a and 22 b for allowing the electrodes 430 a and 430 b to enter the housing portion 21, and the write connector 440 is exposed in the housing portion 21. A connector opening 22c is formed for this purpose.

  As shown in FIG. 9, the battery 303 has a substantially rectangular parallelepiped shape, and a plus terminal 303a and a minus terminal 303b are disposed on the upper surface of one end portion.

  When the upper case 10 and the lower case 20 configured as described above are assembled, the contact portion 432a of the electrode 430a protrudes into the housing portion 21 from the electrode opening 22a formed in the partition wall 22, as shown in FIG. At the same time, the writing connector 440 is exposed in the housing portion 21 from the connector opening 22c.

  Therefore, if the battery cover 50 is opened (removed) and the battery 303 is removed, the writing connector 440 can be connected from the outside, and the tube pump 100 can be operated by connecting a cable connected to an external device. The setting of the control circuit (a microcomputer program or a setting value stored in an EEPROM described later) can be changed. Since the setting is changed when not in use, the write connector 440 and the battery 303 can be used exclusively. In other words, the writing connector 440 is not exposed unless the battery 303 is removed, so that the writing connector 440 cannot be used when the pump is used, and when the writing connector 440 is used, the battery 303 is removed so that the writing connector 440 can be used as a pump. Can not be used.

  Further, when the battery 303 is accommodated in the accommodating portion 21, the terminals 303a and 303b of the battery 303 come into contact with the contact portions 432a and 432b of the electrodes 430a and 430b, and power can be supplied to the main circuit board 400.

  Next, the configuration of the control system of the tube pump 100 of the embodiment will be described based on FIG. FIG. 11 is a block diagram showing an outline of a control system of the tube pump 100. In this example, only a part necessary for the description of the embodiment is taken out and described in a simplified manner, and the description of the flow rate control and timer control necessary as a function of the tube pump 100 is omitted.

  The control circuit drives an EEPROM 301 for storing various data, an AC adapter 302 for supplying power from an external power source, a battery 303, and a calendar IC 304, with a control device 300 that controls the entire tube pump 100 as a center. Button battery 305, motor driver 307 for driving and controlling the motor 306, main switch 11a for turning on / off the device, LCD 12, end sensor 250, blockage sensor 260, transmitter 270 and receiver 271 constituting the bubble sensor, alarm device 308 and the like are connected.

  As described above, according to the present embodiment, by removing the battery 330 from the storage unit 21 that stores the battery 330, the write connector 440, which is an external device connection terminal, is exposed in the storage unit, and externally connected using a cable. Equipment can be connected. In addition, by using an existing battery housing portion, the external connection terminal can be housed without providing a new cover or the like, and it can be applied to a waterproof device.

DESCRIPTION OF SYMBOLS 100 Tube pump 10 Upper casing 20 Lower casing 21 Storage part 22 Partition 22a, 22b Electrode opening 22c Connector opening 50 Battery cover (lid body)
300 Control Device 303 Battery 303a, 303b Terminal 305 Button Battery 306 Motor 400 Main Circuit Board 420 Cover 430a, 430b Electrode 440 Write Connector (External Device Connection Terminal)

Claims (3)

In the structure for connecting external devices for writing software, data, etc. to a microcomputer or memory mounted on a battery-driven portable device,
In the main body of the portable device, a housing portion having a lid for housing the battery, and a circuit board are provided,
An external device connection terminal connected to an external device is provided on the circuit board, and an opening is formed in the housing portion so that the external device connection terminal is exposed in the housing portion when the battery is removed from the housing portion. An external device connection structure for a portable device, wherein the external device connection structure is formed.   The external device connection structure for a portable device according to claim 1, wherein the lid covers the housing portion in a watertight manner.   The external device connection of the mobile device according to claim 1, wherein the mobile device is a tube pump that transfers the liquid in the tube by deforming the flexible tube so as to be handled by the driving unit. Construction.

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