JP5357003B2 - Electronic thermometer - Google Patents

Description

  The present invention relates to an electronic thermometer.

  Conventionally, an electronic thermometer has been widely used as a thermometer for measuring the temperature of a subject. In general, an electronic thermometer is equipped with a small battery on a predetermined holder for supplying power to an inserted circuit board, etc., and power is supplied to the circuit board according to the operation of a power switch. Is possible.

JP 2002-71470 A

  However, in the case of a conventional electronic thermometer holder, the electrode plate that supports the battery is broken due to an impact applied to the electronic thermometer, or the electrode plate that operates according to the operation of the power switch is deformed due to aging. There was a problem.

  The present invention has been made in view of the above problems, and an object of the present invention is to improve durability in a holder in which a battery is mounted and power is supplied to a circuit board in accordance with an operation of a power switch.

In order to achieve the above object, an electronic thermometer according to the present invention has the following configuration. That is,
An electronic thermometer comprising a holder on which a circuit board that calculates the body temperature of a subject based on detected temperature data and a battery that supplies power to the circuit board are mounted,
The holder is
An electrode plate for supplying power supplied from the battery to the circuit board;
A connecting member that connects the positive electrode and the negative electrode of the electrode plate, and a defining member that defines the tip position of the positive electrode and the tip position of the negative electrode,
The defining member is
The tip position of the positive electrode is held so that the positive electrode is along the side wall portion of the holder, and the tip position of the negative electrode is a predetermined distance from the positive electrode held along the side wall portion of the holder. It is characterized by being arranged between the positive electrode and the negative electrode so as to maintain a position apart from each other.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to aim at a durable improvement in the holder which mounts a battery and supplies the power supply to a circuit board according to operation of a power switch.

It is a figure which shows the external appearance structure of the electronic thermometer 100 which concerns on one Embodiment of this invention. 1 is an exploded perspective view of an electronic thermometer 100. FIG. 2 is an exploded perspective view of a holder of the electronic thermometer 100. FIG. It is a figure for demonstrating the structure of the liquid crystal display member mounting area | region of the holder. It is a figure for demonstrating the structure of a rubber holder. It is a figure for demonstrating the structure of the battery mounting area | region of the holder 200. FIG. It is a figure for demonstrating the structure of the battery mounting area | region of the holder 200. FIG. It is a figure for demonstrating the structure of the front-end | tip part of the holder 200. FIG.

  Hereinafter, the details of each embodiment of the present invention will be described with reference to the accompanying drawings as necessary. In addition, this invention is not limited to the following embodiment, It shall change suitably.

<1. External structure of electronic thermometer>
FIG. 1 is a diagram showing an external configuration of an electronic thermometer 100 according to an embodiment of the present invention. FIG. 1A is a plan view of the front side of the electronic thermometer 100, and FIG. 1B is a plan view of the back side of the electronic thermometer 100.

  In FIG. 1A, 101 is a main body housing (housing 101) of the electronic thermometer 100, and 102 is a tail housing (housing 102) of the electronic thermometer 100. The housing 102 is detachably attached to the housing 101. The casing 101 is made of an impact-resistant thermoplastic resin such as butylene / styrene resin. The casing 102 is made of an impact-resistant thermoplastic resin, for example, a high impact styrene resin.

  Reference numeral 103 denotes an end cap. The end cap 103 is covered with a metal such as stainless steel so that the body temperature of the subject can be easily conducted to the built-in temperature measurement unit. A liquid crystal display unit 104 displays body temperature data and the like as a body temperature measurement result, and is covered with a window member 104a formed of a transparent thermoplastic resin. The window member 104a is two-color molded with the casing 101 and has high liquid tightness.

  In FIG. 1B, reference numeral 105 denotes a screw hole for screwing the housing 102 after attaching the housing 102 to the housing 101.

  In this embodiment, it is assumed that the screw attached to the screw hole 105 is made of a SUS material that is attracted by magnetic force. Further, the pitch width of the screw is made larger than that of the conventional one to prevent thread breakage, and the screw head is made larger than that of the conventional one to prevent rattling.

<2. Internal structure of electronic thermometer>
FIG. 2 is an exploded perspective view for explaining the internal configuration of the electronic thermometer 100. In FIG. 2, reference numeral 200 denotes a holder. The holder 200 is mounted with a circuit board mounting area 201 on which a circuit board for calculating the body temperature of the subject is mounted based on the temperature measured by the temperature measuring unit, and a liquid crystal display member for displaying the calculated body temperature. A liquid crystal display member mounting area 202 and a battery mounting area 203 on which a battery for supplying power to the circuit board and the liquid crystal display member are mounted.

  Reference numeral 210 denotes a buzzer part in which a piezoelectric element and a diaphragm are integrated to notify the end of body temperature measurement. The buzzer part 210 is inserted along the arrow from the insertion port 221 and is attached to the inner wall surface of the rear side of the casing 101 (not shown). It is attached directly to the figure.

  The holder 200 is inserted along the arrow through the insertion port 221 and attached to the housing 101 with the buzzer component 210 attached to the inner wall surface on the back side of the housing 101. When the holder 200 is attached to the housing 101, the battery mounting area 203 is exposed to the outside of the housing 101, and is configured so that the user can easily replace the battery.

  The housing 102 is attached to the housing 101 by inserting the fitting portion 231 along the arrow through the insertion port 221 in a state where the holder 200 is attached to the housing 101. As a result, the leaf spring formed integrally with the diaphragm and the circuit board are electrically connected (without using solder).

  The fitting portion 231 has a hollow structure, and its outer wall is fitted to the inner wall of the casing 101, and the inner wall inserts the battery mounting region 203 of the holder 200.

<3. Configuration of holder>
FIG. 3 is a view for explaining the configuration of the holder 200 of the electronic thermometer 100, and shows a state seen from the back side of the electronic thermometer 100.

  In FIG. 3, reference numeral 301 denotes a circuit board that calculates the body temperature of the subject based on the temperature measured by the temperature measurement unit. A liquid crystal display member 302 displays the calculated body temperature. A battery 303 supplies power to the circuit board and the liquid crystal display member. The circuit board 301, the liquid crystal display member 302, and the two button batteries 303 are attached to the circuit board mounting area 201, the liquid crystal display member mounting area 202, and the battery mounting area 203, respectively.

  The holder 200 is made of, for example, a crystalline thermoplastic resin mainly composed of (—CH 2 O—) structural units called POM (polyoxymethylene), generally called polyacetal or acetal resin. It shall be formed.

<4. Configuration of Liquid Crystal Display Member Mounting Area 202 of Holder 200>
Next, the configuration of the liquid crystal display member mounting area 202 of the holder 200 will be described. 4A and 4B are diagrams for explaining the configuration of the liquid crystal display member mounting region in the holder 200 of the electronic thermometer 100. FIG. 4A shows the assembly configuration of the liquid crystal display member mounting region 202, and FIG. FIG. 4 is a cross-sectional view of the liquid crystal display member mounting region shown in FIG. In FIG. 4A, the side wall surface and the like in the liquid crystal display member mounting region are omitted for easy understanding.

  As shown in FIG. 4A, a rubber holder 403 is provided between the liquid crystal unit 402 and the backlight unit 404. The rubber holder 403 has an opening 405 at the center position, and the light emitted from the backlight unit 404 reaches the liquid crystal part 402 via the opening 405. The rubber holder 403 has a peripheral edge 406, and the liquid crystal part 402 is fixed by the peripheral edge 406.

  As described above, by providing the rubber holder 403 between the liquid crystal unit 402 and the backlight unit 404, the rubber connector 401 includes the liquid crystal unit 402, the rubber holder 403, the backlight, as shown in FIG. It will be held by the end surface of the portion 404, and will not fall over without providing a holding member.

  In order to withstand repeated use, the rubber holder is mainly composed of structural units of (—CH 2 O—), for example, POM (polyoxymethylene), generally called polyacetal or acetal resin. It is assumed that it is formed of a crystalline thermoplastic resin. Note that the rubber holder 403 according to the present embodiment is formed of a copolymer made by bonding ethylene oxide to trioxane, which is a trimer of formaldehyde, in POM.

<5. Configuration of Rubber Holder 403>
Next, a detailed configuration of the rubber holder 403 will be described. FIG. 5 is a plan view showing a detailed configuration of the rubber holder 403. As shown in FIG. 5, the peripheral edge 406 of the rubber holder 403 is provided with through holes 511 to 514 through which protrusions (not shown) projecting vertically from the bottom surface of the holder 200 pass. It has been. As described above, the protrusions protruding in the vertical direction from the bottom surface of the holder 200 penetrate the through holes 511 to 514, whereby the horizontal position of the rubber holder 403 is defined.

  Further, on the peripheral edge portion 406 of the rubber holder 403, projections 501 to 504 penetrating through through holes provided in the side wall portion of the holder 200 protrude in the horizontal direction. Thus, the vertical position of the rubber holder 403 is defined by allowing the protrusions 501 to 504 to pass through the through holes provided in the side wall of the holder 200.

  The rubber holder 403 according to the present embodiment has a configuration in which the protrusions 501 to 504 and the through holes 511 to 514 are arranged at positions close to each other (that is, a member for defining the position in the vertical direction). And the member for defining the position in the horizontal direction are arranged at positions close to each other), so that the rubber holder 403 can be easily attached to the holder 200 and is difficult to come off once attached. It became possible.

<6. Configuration 1 of Battery Mounting Area 203 of Holder 200>
Next, a configuration for regulating the battery position in the battery mounting area 203 of the holder 200 will be described. FIG. 6 is a diagram for explaining a configuration for restricting the battery position in the battery mounting area in the holder 200 of the electronic thermometer 100, and FIG. 6A is a perspective view of the battery mounting area 203. 1) and (B-2) are AA sectional views of FIG.

  As shown in FIG. 6B-1, in the battery mounting region 203, the battery 303 has a surface on the back side of the electronic thermometer regulated by the fixing member 601 and a surface on the surface side of the electronic thermometer regulated by the electrode 611. . Here, since the electrode 611 has elasticity, when the strong impact is applied to the electronic thermometer 100 and the battery 303 moves in the front direction of the electronic thermometer, the electrode 611 bends beyond the elastic range.

  At this time, if the amount of bending is large, it is conceivable that the electrode 611 is broken due to a plurality of impacts. Therefore, in the electronic thermometer according to this embodiment, the holder 200 is provided with the rib 602 in order to suppress the amount of bending of the electrode 611.

  As a result, as shown in FIG. 6 (B-2), even when a strong impact is applied to the electronic thermometer 100 and the battery 303 moves in the direction of the electronic thermometer, the surface of the electronic thermometer on the surface of the battery 303 remains on the rib 602. It will contact and the movement of the battery 303 in the electronic thermometer front side direction will be suppressed. As a result, the electrode 611 is not bent to the thickness of the rib 602 or less, and the life of the electrode 611 can be increased.

<7. Configuration 2 of Battery Mounting Area 203 of Holder 200>
Next, the structure for fixing the electrode of the battery mounting area 203 of the holder 200 will be described. 7A and 7B are diagrams for explaining a configuration for fixing electrodes in the battery mounting region in the holder 200 of the electronic thermometer 100, FIG. 7A is a perspective view of the battery mounting region 203, and FIG. FIG.

  As shown in FIG. 7B, in the battery mounting region 203 of the holder 200, the electrode 700 is installed along the side wall of the holder 200, and the positive electrode 701 and the negative electrode 702 are located at a position 730. When the power switch (not shown) is pressed, the negative electrode 702 is bent in the direction of the arrow 720 to be connected.

  Here, it is desirable that the positive electrode 701 and the negative electrode 702 are configured not to contact each other at the position 730 unless the power switch is pressed. For this reason, in the electronic thermometer 100 according to the present embodiment, the electrode holding member 710 is disposed in the battery mounting region 203 of the holder 200.

  As shown in FIG. 7B, the electrode holding member 710 has a notch 711 and holds the tip of the positive electrode 701. As a result, it is possible to avoid a situation in which the positive electrode 701 opens in the direction of the negative electrode 702 due to a change with time or the like and is connected to the negative electrode 702 even though the power switch is not pressed.

  Further, the electrode holding member 710 has a rounded guide portion 712 formed with an acute angle of about 70 degrees so as to hold the negative electrode at a position away from the holding position of the tip portion of the positive electrode 701 by a predetermined distance. Is provided. As a result, the tip position of the negative electrode 702 is separated from the positive electrode 701 by a predetermined distance, and it is possible to avoid a situation where the negative electrode 702 is connected to the positive electrode 701 even though the power switch is not pressed. Become.

  Further, since the guide portion 712 is rounded, the possibility of breakage can be reduced even when the negative electrode 702 is repeatedly bent due to repeated pressing of the power switch.

<8. Configuration of Circuit Board Mounting Area 201 of Holder 200>
Next, the configuration of the circuit board mounting area 201 of the holder 200 will be described. FIG. 8 is a view for explaining the configuration of the tip portion of the circuit board mounting region 201 in the holder 200 of the electronic thermometer 100.

  As described with reference to FIG. 2, the holder 200 is attached to the housing 101 by being inserted along the arrow from the insertion port 221. At this time, the holder 200 is fixed to the casing 101 without using an adhesive or the like, and is configured not to fall out of the casing 101.

  Specifically, as shown in FIG. 8, a drop prevention member 801 is provided at the tip of the circuit board mounting area 201. Since the removal prevention member 801 has a structure extending obliquely rearward with respect to the insertion direction of the holder 200, when the holder 200 is inserted, it slides on the inner wall surface of the housing 101, while the holder 200 falls off the housing 101. When trying to move in the direction, it will be caught by the inner wall surface of the casing 101.

  That is, the removal preventing member 801 has a low resistance value when the holder 200 is inserted into the housing 101, and has a high resistance value when the holder 200 operates in a direction in which the holder 200 falls off the housing 101.

  A guide portion 801 a for easily guiding and positioning a temperature sensitive element such as a thermistor to the end cap 103 is provided at the most distal end portion of the circuit board mounting region 201 of the holder 200.

DESCRIPTION OF SYMBOLS 100 ... Electronic thermometer, 101 ... Housing, 102 ... Housing, 103 ... End cap, 104 ... Liquid crystal display part, 105 ... Screw hole, 200 ... Holder, 201 ... Circuit board mounting area 202 ... Liquid crystal display member mounting area 203 ... Battery mounting area 210 ... Buzzer parts 221 ... Insertion port 231 ... Fitting part 301 ..Circuit board 302 ... Liquid crystal display member 303 ... Battery 401 ... Projection part 402 ... Hollow structure 400 ... Opening part 401 ... Rubber connector 402 ... -Liquid crystal part, 403 ... Rubber holder, 404 ... Back light part, 501-504 ... Projection part, 511-514 ... Through hole, 601 ... Fixing member, 602 ... Rib, 700 ... electrode, 701 ... positive Electrode, 702 ... negative electrode, 710 ... electrode holding member, 711 ... notch, 712 ... guide portion, 801 ... off preventing member

Claims (2)

An electronic thermometer comprising a holder on which a circuit board that calculates the body temperature of a subject based on detected temperature data and a battery that supplies power to the circuit board are mounted,
The holder is
An electrode plate for supplying power supplied from the battery to the circuit board;
A connecting member that connects the positive electrode and the negative electrode of the electrode plate, and a defining member that defines the tip position of the positive electrode and the tip position of the negative electrode,
The defining member is
The tip position of the positive electrode is held so that the positive electrode is along the side wall portion of the holder, and the tip position of the negative electrode is a predetermined distance from the positive electrode held along the side wall portion of the holder. An electronic thermometer, which is disposed between the positive electrode and the negative electrode so as to maintain a position apart from each other.   The electronic thermometer according to claim 2, wherein the holder further includes a regulating member that regulates a movable range of a surface on a bottom surface side of the battery on a bottom surface on which the battery is mounted.

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