JPH1048060A - Electronic clinical thermometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic clinical thermometer excellent in assembly and water-proofing properties. SOLUTION: An electronic clinical thermometer has inside structural members, including a window member 6, a switch 4, a LCD 8, a connector 9, a battery connector 10, a battery 11 and an electronic circuit board 12 to which a heat sensitive element 12a is connected, stored in a flat slender main case 5. In this case, the inside structural members are stored in sequence in a subcase 7, the subcase 7 is stored in the main case 5 through an opening 5d in a recess 5a provided on the wide face side and then the opening 5d to which a cover member 13 is applied is closed by ultrasonic welding, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an electronic thermometer.

[0002]

2. Description of the Related Art Conventionally, electronic thermometers are roughly classified into a single case structure and a double case structure. In the former case, a temperature detection circuit board or the like is inserted into an opening provided at a longitudinal rear end portion of the main body case, and then the adjustment opening (hole) provided on the wide surface side of the main body case.
Japanese Patent Publication No. 3-22569 discloses a structure in which the temperature detection circuit is adjusted from the above, and each opening is finally covered with a cover member. The electronic thermometer of this structure has difficulty in waterproofness because the outside and the inside are shut off only by the main body case. As the latter, Japanese Patent Publication No. Hei 3-18899 discloses a configuration in which a sub-case on which electric circuit components such as a liquid crystal display and a printed wiring board are mounted is inserted from the back of the main body case while being fitted into the main body case. Is disclosed. The electronic thermometer of this structure has a double structure using a main body case and a sub case, and has excellent waterproof and drip-proof properties.

In recent years, it has become essential to automatically assemble this type of electronic thermometer in order to achieve mass production and cost reduction.

In order to automatically assemble an electronic thermometer, it is necessary to unify the mounting directions to some extent. Further, it is necessary to easily and surely position the components to be incorporated.

However, in the case of the conventional structure, the former is not suitable for automatic assembling because the mounting direction of the lid member and the inserting direction of the temperature detecting circuit board are different, and the adjustment must be performed during the assembly of the parts. Met.

The latter has a structure in which a sub-case containing various components is attached to the main body case. However, since the sub-case has a structure in which components are incorporated from various directions, automatic assembly cannot be performed as described above.

[0007]

As described above, the structure of the conventional electronic thermometer has a problem that it is difficult to automatically assemble since the internal components are assembled from different directions.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and has a structure excellent in assemblability and waterproofness, and can automatically at least incorporate components into a subcase. It is intended to provide.

[0009]

In order to achieve the above object, an electronic thermometer according to claim 1 has a sub-case in which components for measuring temperature are assembled, a flat elongated shape and a wide surface side thereof. A main body case for accommodating the sub case through the hole provided in the main case, and a lid member for closing the hole of the main case accommodating the sub case. According to the first aspect of the present invention, after a component for performing temperature measurement is assembled to the sub case, the sub case is housed in the main case, and the hole of the main case is closed with a lid member. This results in a structure that is excellent in assemblability and waterproofness. The electronic thermometer according to claim 2, wherein a temperature detecting circuit section connected to the temperature sensing section, a display section for displaying a result of the temperature detected by the temperature detecting circuit section, a power supply section for supplying power to the temperature detecting circuit section, and a switch. In an electronic thermometer having a main body case provided with a sub case housing portion having a flat elongated shape and having an opening on its wide surface side, and a sub case in which the temperature detection circuit unit, a display unit, a power supply unit, a switch and the like are assembled, A lid member for closing the opening of the main body case in which the sub case is accommodated in the sub case accommodating portion.

According to the second aspect of the present invention, after the temperature detection circuit section, the display section, the power supply section, the switch, and the like are assembled to the subcase, the subcase is accommodated in the subcase accommodating section of the main body case, and With the double structure in which the opening is closed by the lid member, a structure excellent in assemblability and waterproofness is obtained.

According to a third aspect of the present invention, in the electronic thermometer according to the second aspect, the temperature detection circuit, the display, the power supply, the switch, and the like are assembled to the subcase from one direction. Features.

According to the third aspect of the present invention, since the temperature detecting circuit, the display, the power supply, the switch, and the like are assembled to the subcase from one direction, at least the parts can be automatically assembled into the subcase. Become like

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an external plan view showing the configuration of an electronic thermometer according to one embodiment of the present invention, and FIG. 2 is an exploded view showing the internal configuration of the electronic thermometer.

In FIG. 1, reference numeral 1 denotes a main body of the electronic thermometer. At one end of the main body 1 of the electronic thermometer, a temperature sensor 2 is provided so as to protrude from one end. On one wide surface of the main body 1, a display section 3 for displaying the body temperature detected by the temperature sensor section 2 is formed. A switch 4 for turning on / off the power is provided near the display unit 3. This switch 4
It is formed of an elastic member such as rubber, and is provided with carbon or the like at a central contact portion so as to be directly in contact with a contact pattern on the substrate surface to be turned on / off.

Each component group shown in FIG. 2 is accommodated inside the electronic thermometer 1.

In FIG. 2, reference numeral 5 denotes an outer case of the main body 1 (hereinafter referred to as main body case 5). The main body case 5 is formed by a single color molding technique. On the wide surface opposite to the display unit 3 of the main body case 5, a concave portion (sub case housing portion) having an opening 5d for occupying the internal space of the main body case 5 as much as possible to accommodate the sub case 7 is provided. ) 5a. A display window 5b for displaying temperature and a hole 5c for projecting the tip of the switch are provided at the bottom of the concave portion 5a. The length of the concave portion 5a in the longitudinal direction is larger than the length from the tip portion 5e to the concave portion 5a, and a pin for penetrating the temperature sensor portion 2 at the time of molding the main body case 5 is provided in the mold portion of the concave portion 5a. Thus, the notch of the outer wall in the longitudinal direction of the concave portion 5a, which is conventionally required, becomes unnecessary. A window member 6 is applied to the display window 5b and is adhered by ultrasonic welding or the like. The sub-case 7 is mounted in the recess 5a through the opening 5d. The sub-case 7 is provided with a hole-like switch mounting portion 7a, an LCD mounting portion 7b, and a battery mounting portion 7c, and all electronic circuit components (internal components) in the main body 1 are mounted.
The outer shape of the sub case 7 is the concave portion 5a of the main body case 5.
The dimensions are such that they are in close contact.

Next, the procedure for assembling the electronic thermometer of the present invention will be described.

In the case of the electronic clinical thermometer of the present invention, the temperature-sensitive element 12a is connected to the electronic circuit board 12 in advance by a lead wire, and the temperature has been calibrated. As the temperature sensing element 12a, for example, a thermistor or the like is used.

First, the switch 4 is fitted into the hole-like switch mounting portion 7a of the sub case 7, and the side surface of the switch 4 is clamped.

Next, the LCD 8 is applied to the LCD mounting portion 7b, and the LCD connector 9 is mounted thereon.

Next, the battery 11 is applied to the battery mounting portion 7c, and the battery connector 10 is mounted thereon. LCD
The connector 9 is a contact material made of a rubber material and has elasticity. The battery connector 10 is made of metal, and is bent several times in the vertical direction, and has elasticity in that direction similarly to the LCD connector 9.

Next, the above-mentioned components incorporated in the sub-case 7 are covered with the electronic circuit board 12 and pressure-bonded, and a number of essential parts are fixed by heat caulking or the like to form a sub-case unit. In this state of the sub-case unit, the LCD connector 9 is pressed between the electronic circuit board 12 and the LCD 8, so that electrical contact between them is maintained. Similarly, electrical contact is maintained between the electronic circuit board 12 and the battery 11 by the battery connector 10. The temperature sensing element 12a is already attached to the electronic circuit board 12 in a process before assembling the sub-case 7, and the temperature has been calibrated.

In the procedure described above, the components are assembled in one direction perpendicular to the wide surface of the subcase 7, and are assembled by automatic assembly.

After the sub-case unit in which the members (internal components) in the main body 1 of the electronic thermometer are all assembled to the sub-case 7 is mounted and pressed against the recess 5a of the main case 5, and the cover member 13 is applied. Then, the lid member 13 and the opening 5d are sealed (sealed) by ultrasonic welding or the like. In this state, the tip of the switch 4 protrudes from the main body case 5, and the whole sub case unit is positioned by this protruding portion.

Finally, an adhesive is filled in the sensor cap 14, and the sensor cap 14 is attached to the tip 5e of the main body case 5 so as to cover and protect the temperature sensing element 12a, and the assembling is completed.

As described above, according to the electronic thermometer of this embodiment, the sub-case 7 is assembled to the main case 5 in a double structure, and the sub-case 7 is assembled in one direction. Can be automated.

Further, the concave portion 5a having the opening 5d formed on the wide surface is formed so as to occupy the internal space of the main body case 5 as much as possible, and the sub case 7 is fitted into the concave portion 5a. As a result, the internal air of the main body case 5 is reduced, so that the internal air is less likely to be affected by a volume change due to expansion and contraction of the internal air, and the waterproof property can be further improved. Further, when the sub case 7 is mounted on the main body case 5, the tip of the switch 4 is positioned without difficulty protruding from the main body case 5, so that the assemblability can be improved.
In addition, since the main body case 5 itself does not require much airtightness, there is an effect that the molding conditions are relaxed.

The present invention is not limited only to the above embodiment.

For example, a buzzer as a notification means may be housed inside the electronic thermometer, and the case is formed by multi-color molding, and the shape of the cover member 13 of the sub-case 7 is matched to the body case 5. Various modifications, such as a structure, are possible.

[0031]

As described above, according to the present invention, the direction in which the parts are assembled to the subcase is one direction.
The assemblability can be improved, and incorporation of parts can be automated for processing of the subcase. Further, since the electronic thermometer has a double structure in which the subcase is accommodated in the subcase accommodating portion of the main body case, the main body case is hardly affected by expansion and contraction of the internal air, so that the waterproofness can be improved.

As a result, a structure excellent in assemblability and waterproofness can be obtained, and at least the incorporation of components into the subcase can be automated.

[Brief description of the drawings]

FIG. 1 is an external view of an electronic thermometer according to an embodiment of the present invention.

FIG. 2 is an exploded view of the electronic thermometer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body part, 2 ... Temperature sensor part, 3 ... Display part, 4 ... Switch, 5 ... Outer case (body case), 5a ... Depression, 5b ... Display window, 5c ... Hole, 5d ... Opening, 5e ... Tip part , 6 ... window member, 7 ... sub case, 7a ... switch mounting part, 7b ... LCD mounting part, 7c ... battery mounting part, 8 ... LC
D, 9: LCD connector, 10: Battery connector,
11: battery, 12: electronic circuit board, 12a: temperature-sensitive element,
13: lid member, 14: sensor cap.

Claims (3)

[Claims] 1. A sub-case in which components for performing temperature measurement are assembled, a main body case accommodating the sub-case through a hole formed in a flat elongated shape and having a wide surface, and the sub-case is accommodated. An electronic thermometer comprising: a lid member for closing a hole of the main body case. 2. An electronic thermometer comprising: a temperature detection circuit connected to a temperature sensing unit; a display unit for displaying a result of the temperature detected by the temperature detection circuit; a power supply unit for supplying power to the temperature detection circuit; and a switch. A main case provided with a subcase housing portion having a flat and elongated shape and having an opening on a wide surface side thereof; and a subcase in which the temperature detection circuit unit, the display unit, the power supply unit, the switch, and the like are assembled. A cover member for closing the opening of the main body case in which the sub case is accommodated in the sub case accommodating portion. 3. The electronic thermometer according to claim 2, wherein the temperature detection circuit section, the display section, the power supply section, the switch, and the like are assembled to the subcase from one direction.