JPH01229921A - Electronic clinical thermometer - Google Patents

Abstract

PURPOSE:To make a thermometric operation switch easy to operate by widening the operation surface of said switch, by providing the thermometric operation switch to a flat main body case on the wide surface side thereof. CONSTITUTION:A clinical thermometer is equipped with a main body case 2, a temp.-sensitive part 1, a thermometric circuit part 19 containing a circuit board 3, a power supply part 20 and a thermometric operation switch 9. Further, the switch 9 is provided to the board 3 and opening parts 22, 24 are provided to the case 2 on the wide surface side thereof corresponding to the switch 9 to expose the switch 9. In this exposed state, the operation surface of the switch 9 is brought to the almost same height as the wide surface of the case 2 and the peripheral surfaces of the opening parts 22, 24 are inclined in a depressed state and, therefore, the switch 9 is provided to the case 2 on the wide surface side thereof to make it possible to relatively widen the operation surface of said switch 9 and the switch 9 can be simply operated even by an unaccustomed person.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a portable electronic thermometer.

[Prior art]

Recently, in the thermometer market, electronic thermometers that digitally display temperature results have been seen here and there among mercury thermometers.

Such an electronic thermometer is provided with a temperature measurement operation switch so as to supply power to the temperature measurement circuit section only during temperature measurement.

[Problem that the invention seeks to solve]

By the way, when taking the temperature by inserting the thermometer into your armpit, you may have to pinch the thermometer with your fingertips to insert or remove it, or while taking the temperature,
Temperature measurement operation switches may be pressed or rubbed by clothing, making them more likely to malfunction.

[Means for solving problems]

The present invention has been made in view of the above circumstances, and includes a flat main body case, a temperature sensing section provided at the front end of the main body case, a temperature measuring circuit section including a circuit board, a body temperature measurement value display, a power supply section, and a temperature measuring section. In an electronic thermometer equipped with an operation switch, a temperature measurement operation switch is provided on the circuit board, and the circuit board is housed in the main body case! With a large plate, provide an opening [ ] on the wide side of the main body case corresponding to the temperature measurement operation switch to expose the temperature measurement operation switch, and in this exposed state, the operation surface of the temperature measurement operation switch is almost the same as the wide side of the main body case. In addition to increasing the height, the circumferential surface of the opening is inclined in a concave manner.

(Function) Therefore, by providing the temperature measurement operation switch on the wide side of the flat main body case, the operation surface of the temperature measurement operation switch can be made relatively wide, making it easier to operate.

In addition, making the operation surface wider makes it more likely to malfunction when you pick up the main body case with your fingertips and insert it into your armpit. In addition, by sloping the opening peripheral surface in a concave shape, the main body case has a flat shape that is easy to pick up, but the temperature measurement operation switch does not need to be operated unnecessarily. Since the temperature measurement operation switch is located at the bottom of the concave slope, the operating finger is guided by the slope and can be operated efficiently.

[Embodiments of the invention] Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is an external front view of an electronic thermometer according to an embodiment of the present invention.
2 is a front sectional view of the electronic thermometer shown in FIG. 1, and FIG. 3 is a plan sectional view of the electronic thermometer shown in FIG. 1.

In Fig. 1, 2 is a long main body case made of plastic, which has a flat cylindrical shape consisting of wide upper and lower surfaces and narrow both sides, and 1 is provided at the front end of the main body case 2 to protect the thermistor and this. Temperature sensitive part consisting of an aluminum cap, 6
9 is a display that displays the measured body temperature value using a liquid crystal, and 9 is a temperature measurement operation switch that is operated at the start of temperature measurement. In addition, the outer diameter of the tip of the body case 2 to which the temperature sensing part 1 is attached is approximately 4 to 51 mm.
It forms a hollow shaft shape of Tlln. Further, the surface of the flat main body case 2 has a display 6 on its wide upper surface side. It has openings 21 and 22 for installing the temperature measurement operation switch 9, so that the shape of the display 6 and the temperature measurement operation switch 9 can be enlarged, and the wide bottom side of the back side has openings 21 and 22 for installing the temperature measurement operation switch 9. An opening 23 for circuit adjustment provided inside the main body case 2;
It has an opening 24 for a battery case at the rear end (9c will be described later).

In FIGS. 2 and 3, 3 is a circuit board made of an elastic glass cloth-based epoxy resin plate with a thickness of 0.6 mm; 8;
A to 8f are external circuit components semi-IJI attached to the back side of the circuit board 3, 8[ is a trimmer for adjusting the circuit, and 5 is the temperature sensing part 1.
This is a temperature measurement IC that intermittently samples the temperature of the sensor and displays it on the display 6 (FIG. 3). This IC5 is
Wire bond the chip directly to the circuit board 3,
It is sealed and has a low power consumption C-M inside.
It is created using the OS process. The driving voltage of the IC 5 is 1.5■, and the temperature measurement mode is set by a switch signal generated by operating the power switch 9. After maintaining the temperature measurement mode according to predetermined conditions, the display 6 is turned off and the temperature measurement mode is set. However, the sequence is not directly related to the present invention and will therefore be omitted. Each of the above parts, ie, circuit board 3. A temperature measurement circuit section 19 is configured by the external circuit components 8a to 8f and the IC5.

A rib 4 is provided on the front inner wall of the main body case 2 and forms a groove for holding the circuit board 3. Note that the ribs 4 are not held over the entire length of the circuit board 3, but are provided up to point A as shown in the figure, and hold approximately half of the front of the circuit board 3. In addition, the inner diameter dimension W of the main body case 2 to which the circuit board 3 is attached is not constant over the entire length of the circuit board 3, but approaches (moderately larger) from the front to the rear end. This is because when molding from plastic, a slope is created for cutting out the mold. Therefore, when the mounted circuit board 3 is inserted from the open rear end of the main body case 2, the inner wall of the main body case 2 It is held by the groove formed between the ribs 4 formed on the surface, and its movement in the direction perpendicular to the surface is regulated by the rib 4.
At the rear, since the inner diameter W of the main body case 2 is larger than the width of the circuit board 3, if force is applied, the circuit board 3 can be displaced in a direction perpendicular to its surface within the elastic limit range of the circuit board 3.

The temperature measurement operation switch 9 of the present invention is a push button switch, and in this embodiment, as shown in the figure, an insulating rubber 9a
It consists of a conductive rubber plate 9b, and is fixed to the circuit board 3. This is not limited to the one in this embodiment, and any push button switch that sends out a signal when pressed may be used. In addition, with this circuit board 3 housed in the main body case 2, an opening is provided on the wide side of the main body case 2 corresponding to the temperature measurement operation switch 9 to expose the temperature measurement operation switch, and in this exposed state, The pressing operation surface of the temperature measurement operation switch 9 is approximately at the same height as the wide upper surface of the main body case 2, and 9c (FIG. 1) is an opening provided in the main body case 2 for the temperature measurement operation switch 9. [ ] This is a concave opening inclined surface on the circumferential surface of part 22.

The operation surface of the temperature measurement operation switch 9 is made elongated in a direction orthogonal to the long sleeve direction of the elongated main body case 2, as shown in FIG. 1, to prevent erroneous operation when the temperature measurement operation switch 9 is picked with a fingertip.

A display holder 7 fixes the display 6 to the circuit board 3.

10 is a battery for power supply, for example, a silver oxide battery; II is a battery case detachably provided at the rear end of main case 2;
is the main body case 2 that is integrally provided at the end of the battery case 11.
12 is a terminal provided under the battery case 11 that corresponds to the negative pole of the battery 10; 14 is a terminal attached to the circuit board 3 that corresponds to the positive pole of the battery 10; A power supply section 20 is configured by the components.

The thickness B of the tongue portion 11a is equal to the distance between the back surface of the circuit board 3 held by the ribs 4 of the main body case 2 when it is not elastically deformed and the inner wall of the main body case 2 facing thereto.

Thereby, when the detection 71μ operating switch 9 is pushed in the direction of arrow C, the tongue portion 11a itself receives the pushing force without causing any deformation of the circuit board 3.

Reference numeral 12a (FIG. 3) is a convex portion provided integrally with the terminal 12 near the tongue portion tta of the terminal 12, and protrudes slightly from the tongue portion 11a. 13 is a convex portion 12 provided at the rear end of the circuit board 3.
This is a hole that engages with a.

In FIG. 3, reference numeral 15 denotes a back cover that covers an opening 23 provided on the back side of the main body case 2, that is, the wide lower surface on the opposite side from the display 6, in order to adjust each part of the temperature measurement circuit section 19;
15 is inserted into and engaged with the main body case 2 by means of locking claws provided integrally at both ends thereof. 17 is a boss provided integrally inside the back M15 for positioning the circuit board 3; 18 is a boss 1
This is a hole provided in the circuit board 3 that engages with the circuit board 7.

Next, the assembly order of the electronic thermometer of this embodiment configured as described above will be explained.

First, insert the lead wire of the temperature sensing part 1 made by putting the thermistor into an aluminum camp and fixing it with silicon adhesive into the hollow shaft at the tip of the main body case 2, and connect the temperature sensing part I and the main case 2. Glue and fix. Next, an external circuit component 8a is attached to the back side of the circuit board 3 to which the IC 5 is wire-bonded.
8f and the positive terminal 14 are soldered, a liquid crystal display 6 is attached to the surface of the circuit board 3 via a display holder 7, and a temperature measuring operation switch 9 is bonded.

The above component-mounted circuit board 3 is inserted into the main body case 2 through the opening of the battery case 11 at the rear end of the main body case 2.

At this time, as described above, only the front side of the circuit board 3 is held by the ribs 4, so even if the temperature measurement operation switch 9 is fixed and protrudes from the circuit board 3, the temperature measurement operation switch 9 cannot be moved. The convex portion corresponds to the corresponding opening 22 of the main body case 2.
The circuit board 3, which has elasticity, can be pushed and bent into position.

Next, a soldering iron is inserted through the circuit adjustment opening 23 covered by the back cover 15 of the main body case 2, and the lead wires of the temperature sensing section 1 are connected to the corresponding locations on the circuit board 3.

Next, the negative electrode end F12 is placed under the battery case II, and a part of the battery case 11 is thermally deformed using the soldering iron to fix the terminal 12 so that it will not fall off.

Furthermore, the battery case 11 containing the silver oxide battery 10 is inserted into the opening at the rear end of the main case 2.

Here, the convex portion 1 of the terminal 12 provided on this battery case 11 is
After 2a pushes the circuit board 3 upward, the circuit board 3
When replacing the battery, the battery case 1
1 is installed in a predetermined position.

After that, put the temperature sensing part 1 attached to the main body case 2 into a constant temperature water bath for adjustment, and use the adjustment trimmer 8C through the opening 23 on the wide lower surface of the main body case 2 so that the displayed value on the display 2S6 becomes the predetermined temperature. Adjust.

Next, after verifying the measurement accuracy of the product, when the lid 15 is pushed into the wide bottom opening 23 of the main body case 2, the positioning boss 17 inside the back i15 fits into the hole 18 of the circuit board 3 and the position is determined. At the same time, the claws 16 at both ends of the back UT5 engage with the main body case, the back cover 15 is attached, and the assembly of the electronic thermometer is completed.

Next, the operation of the electronic thermometer of this embodiment when used will be explained.

That is, when the user takes the temperature using this electronic thermometer, first press the temperature measurement operation switch 9 so that the finger touches the opening slope 9C of the main body case 2, and then the circuit board 3
receives a downward force from the pressed conductive rubber 9b,
Since the force is supported by the tongue portion 11a of the battery case 11 as described above, the circuit board 3 does not deform in the direction perpendicular to its surface, and therefore does not become a member.

In addition, by using this electronic thermometer, the battery 10
When replacing the battery 10 because the battery has been exhausted and the voltage has decreased, the battery case 11 is pulled out from the main body case 2 rearward and a new battery 10 is installed there. Here, when the battery case 11 is pulled out, the circuit board 3 tries to be pulled out rearward together with the battery case 1 due to the engagement between the negative terminal 12 ρ convex portion 12a and the hole 3;
Since the 1 m 15 boss 17 fixed to the main body case 2 by the claw 16 is fitted into the hole 18 of the circuit board 3, the circuit board 3 does not move, and therefore the lead wire connected to the temperature sensing part l This prevents the temperature measuring operation switch 9 from being pulled and disconnected, or from being mechanically injured.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, a flat main body case, a temperature sensing section provided at the front end of the main body case, a temperature measuring circuit section including a circuit board, a body temperature measurement value display, a power supply section, and In an electronic thermometer equipped with a temperature measurement operation switch, the temperature measurement operation switch is provided on the circuit board, and when the circuit board is housed in the main body case, an opening is formed on the wide side of the main body case corresponding to the temperature measurement operation switch A. is provided to expose the temperature measurement operation switch, and in this exposed state, the operation surface of the temperature measurement operation switch is made almost at the same height as the wide surface of the main body case, and the peripheral surface of the opening is sloped in a concave shape.
The temperature measurement operation switch is provided on the wide side of the flat main body case, so that the operation surface can be made relatively wide, and even an untrustworthy person can easily operate it.

Furthermore, when inserting or removing the device into your armpit by picking it up with your fingertips, making the operating surface wider can easily lead to erroneous operation. By tilting it in a concave shape, you will not have to operate the temperature measurement operation switch unnecessarily even though the body case has a flat shape that is easy to pick up. Since the temperature measurement operation switch is located in this section, the operating finger is guided by the inclined surface and can be pressed down efficiently.

[Brief explanation of the drawing]

FIG. 1 is an external front view of an electronic thermometer according to an embodiment of the present invention.
2 is a front sectional view of the electronic thermometer shown in FIG. 1, and FIG. 3 is a plan sectional view of the electronic thermometer shown in FIG. 1. ■ Temperature sensing part 2 Main case 3 Circuit board 6 Display 9 Temperature measurement operation switch 9C Opening slope 10 Battery 19 Temperature measurement Circuit section 20...power supply section. Applicant Kyushu Hitachi Maxell Co., Ltd. Representative Seigo Sato

Claims (1)

[Claims] (1) A flat main body case, a temperature sensing part provided at the front end of the case,
An electronic thermometer comprising a temperature measurement circuit section including a circuit board, a display device for body temperature measurement values, a power supply section, and a temperature measurement operation switch, wherein the temperature measurement operation switch is provided on the circuit board, and the circuit board is housed in a main body case. In this state, an opening is provided on the wide side of the main body case corresponding to the temperature measurement operation switch to expose the temperature measurement operation switch, and in this exposed state, the operation surface of the temperature measurement operation switch is approximately at the same height as the wide side of the main body case. An electronic thermometer characterized in that the peripheral surface of the opening is sloped in a concave manner.