JP2009300395A - Compact electronic device, and method of manufacturing compact electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact electronic device having excellent assemblability, and to provide a method of manufacturing the compact electronic device. <P>SOLUTION: The compact electronic device 1 includes a case 2 having a hollow inside; a plurality of electronic components stored in the case 2; and elastic connection components 14, 16 fixed inside the case together with the plurality of electronic components by being mounted in the elastically compressed state between the plurality of electronic components or between the electronic components and the case 2, for connecting electrically the plurality of electronic components. The case 2 is divided by a dividing plane along a virtual plane which is vertical to a compression direction of the elastic connection components 14, 16, and divided one divided case 10 and the other divided case 11 are pressed and bonded mutually by ultrasonic welding, to thereby acquire the compressed state of the elastic connection components 14, 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a small electronic device such as an electronic thermometer and a pedometer, and a method for manufacturing the small electronic device.

  In small electronic devices such as electronic thermometers and pedometers, it is technically possible to reduce the size of the entire device as LSIs and other electronic circuit elements become smaller. In such a small electronic device, since an accommodation space for an internal component such as an electronic circuit is small, an elastic member is used as a contact point between the component and the substrate in consideration of workability and cost.

  For example, in the electronic thermometer described in Patent Document 1, a contact made of rubber material is used as a contact point between the display (LCD) and the substrate, and the battery and the substrate are connected by a connector obtained by bending a metal several times. ing. By forming an electrical connection using such an elastically deformable member, a connection by welding or the like between the members is not necessary, so that the assembling work can be simplified.

  Since such connecting parts have elasticity, it is necessary to fix the substrate in a state where a certain amount of pressure is applied at the time of assembly in order to give an electrical contact pressure to the substrate. In the electronic thermometer described in Patent Document 1, there is a method in which several portions are integrally fixed by heat caulking in a state in which a substrate is pressed against a connection component.

  A conventional structure will be described with reference to FIGS. FIGS. 8A and 8B are schematic perspective views for explaining the configuration of the internal parts of the electronic thermometer according to the conventional example. FIG. 8A is a state before the components are assembled into the sub case, and FIG. Shows the state. 9A and 9B are schematic views for explaining the configuration of an electronic thermometer according to a conventional example. FIG. 9A is a plan view of the electronic thermometer, and FIG. 9B is a DD cross-sectional view of FIG. 10A and 10B are cross-sectional views of a conventional electronic thermometer. FIG. 10A is an EE cross-sectional view of FIG. 9A, and FIG. 10B is a FF cross-sectional view of FIG.

  The electronic thermometer 100 according to the conventional example has a configuration in which components such as the substrate 101 and the buzzer 103 are integrally attached to the sub case 104 in advance and the sub case 104 is assembled in the housing 109. ing.

  In addition to the substrate 101, the buzzer 103, and the buzzer cover 102, the sub case 104 incorporates a display (LCD) 105, a connector (interconnector) 106, a battery terminal 107, a battery 108, and the like. In the sub case 104, after each component is assembled, the caulking boss 104a is fixed by heat caulking in a state where the connection connector 106 made of an elastic material and the battery terminal 107 having a leaf spring structure are pressed by the substrate 101. And integrated.

  As other methods, there are a fixing method using a screw and a fixing method using a snap fit in which a substrate holding structure is provided in the sub case.

However, fixing by heat caulking or screws increases the number of man-hours and parts, and the assembly work becomes complicated. In addition, although fixing by snap-fit can simplify the assembly work, it is difficult to secure sufficient electrical contact pressure (joining pressure) due to the elasticity of the plastic parts. There is a risk of the substrate coming off.
Japanese Patent Laid-Open No. 10-48060

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a small electronic device excellent in assemblability and a method for manufacturing the small electronic device.

In order to achieve the above object, the small electronic device of the present invention includes:
An internal hollow housing;
A plurality of electronic components housed in the housing;
The plurality of electronic components are fixed in the casing together with the plurality of electronic components by being elastically compressed between the plurality of electronic components or between the electronic component and the casing. Elastic connection parts that electrically connect parts;
In a small electronic device comprising:
The housing is divided by a dividing surface along a virtual plane perpendicular to the direction in which the elastic connecting component is compressed,
One of the divided housings and the other divided housing are pressed and joined to each other by ultrasonic welding, whereby the elastic connecting component is in a compressed state.

  According to the present invention, the elastic connecting component can be compressed when the divided housings are joined. That is, when one split housing and the other split housing are pressed together and joined by ultrasonic welding, the elastic connecting parts are compressed, so that the joining of the housing and the electrons inside the housing are compressed. The parts and the elastic connecting parts can be fixed in one operation. Therefore, the assembling work is simplified, and the number of work processes can be reduced and the manufacturing cost can be reduced.

In the plurality of electronic components,
A substrate on which a control circuit for controlling a small electronic device is formed;
A display controlled by the control circuit;
Contains
In the elastic connecting part,
A connector part made of an elastic material for electrically connecting the substrate and the display device may be included.

  Thereby, in a small electronic device, it is possible to perform electrical connection between the substrate and the display unit via the connector component made of an elastic material, fixing in the housing, joining of the housing, and one operation.

In the plurality of electronic components,
A temperature sensor for detecting the temperature;
A display for displaying a measured temperature based on data detected by the temperature sensor;
A substrate on which a control circuit is formed to process the data detected by the temperature sensor and control the display unit to display the measured temperature obtained by the processing;
Contains
In the elastic connecting part,
A connector part made of an elastic material for electrically connecting the substrate and the display device may be included.

Thus, in a small electronic device that detects the temperature of an electronic thermometer or the like, the electrical connection between the substrate and the display unit via the connector part made of an elastic material, the fixing inside the housing, the joining of the housing, and the like once. Can be done in the work.

In the plurality of electronic components,
A step sensor for detecting the number of steps;
A display for displaying the number of steps measured based on the data detected by the step sensor;
A substrate on which a control circuit is formed to process the data detected by the step sensor and control the display unit to display the measured number of steps obtained by the processing;
Contains
In the elastic connecting part,
A connector part made of an elastic material for electrically connecting the substrate and the display device may be included.

  Thus, in a small electronic device that detects the number of steps, such as a pedometer, the electrical connection between the substrate and the display unit via the connector part made of an elastic material and the fixing inside the housing, the joining of the housing, and the like once. Can be done in the work.

In the plurality of electronic components,
A power supply for supplying power to the substrate and the display is included,
In the elastic connecting part,
A power source terminal may be included that includes a leaf spring portion that is elastically compressed and fixed between the substrate and the inner wall surface of the housing, and that electrically connects the substrate and the power source.

  Thereby, it is possible to perform electrical connection between the power source and the substrate in the small electronic device, fixation within the housing, joining of the housing, and one operation.

The plurality of electronic components further includes a buzzer having a diaphragm,
The other divided housing has a support portion that supports the vicinity of an edge on one surface of the diaphragm,
The one split housing presses the diaphragm against the support portion by pressing the vicinity of the edge of the other surface of the diaphragm in the same direction as the direction in which the elastic connecting component is compressed. It is good to have a part.

  Thereby, in the case where the small electronic device has a buzzer, the diaphragm of the buzzer can be fixed and the casing can be joined at the same time.

In order to achieve the above object, a method for manufacturing a small electronic device of the present invention includes:
An internal hollow housing;
A plurality of electronic components housed in the housing;
The plurality of electronic components are fixed in the casing together with the plurality of electronic components by being elastically compressed between the plurality of electronic components or between the electronic component and the casing. Elastic connection parts that electrically connect parts;
In a method for manufacturing a small electronic device comprising:
A first step of attaching the plurality of electronic components and the elastic connection component to one split housing of the housing divided by a split surface along a virtual plane perpendicular to the direction in which the elastic connection component is compressed. When,
A second step of joining the one divided housing and the other divided housing together by compressing the elastic connecting part and pressing them together by ultrasonic welding;
It is characterized by having.

According to the present invention, the elastic connecting component can be compressed when the divided housings are joined. That is, when one split housing and the other split housing are pressed together and joined by ultrasonic welding, the elastic connecting parts are compressed, so that the joining of the housing and the electrons inside the housing are compressed. The parts and the elastic connecting parts can be fixed in one operation. Therefore, the assembly work can be simplified, and the number of work processes can be reduced and the manufacturing cost can be reduced.

In the plurality of electronic components,
A substrate on which a control circuit for controlling a small electronic device is formed;
A display controlled by the control circuit;
Contains
In the elastic connecting part,
A connector part made of an elastic material for electrically connecting the substrate and the display is included,
In the first step, the connector component is interposed between the substrate and the display, and the plurality of electronic components and the elastic connection component are positioned with respect to the one divided housing,
In the second step, the one divided housing and the other divided housing may be joined while compressing the connector component between the substrate and the display.

  Thereby, in a small electronic device, it is possible to perform electrical connection between the substrate and the display unit via the connector component made of an elastic material, fixation within the housing, joining of the housing, and one operation.

In the plurality of electronic components,
A temperature sensor for detecting the temperature;
A display for displaying a measured temperature based on data detected by the temperature sensor;
A substrate on which a control circuit is formed to process the data detected by the temperature sensor and control the display unit to display the measured temperature obtained by the processing;
Contains
In the elastic connecting part,
A connector part made of an elastic material for electrically connecting the substrate and the display is included,
In the first step, the connector component is interposed between the display and the substrate, and the plurality of electronic components and the elastic connection component are positioned with respect to the one divided housing,
In the second step, the one divided housing and the other divided housing may be joined while compressing the connector component between the display and the substrate.

  Thus, in a small electronic device that detects the temperature of an electronic thermometer or the like, the electrical connection between the substrate and the display unit via the connector part made of an elastic material, the fixing inside the housing, the joining of the housing, and the like once. Can be done in the work.

In the plurality of electronic components,
A step sensor for detecting the number of steps;
A display for displaying the number of steps measured based on the data detected by the step sensor;
A substrate on which a control circuit is formed to process the data detected by the step sensor and control the display unit to display the measured number of steps obtained by the processing;
Contains
In the elastic connecting part,
A connector part made of an elastic material for electrically connecting the substrate and the display is included,
In the first step, the connector component is interposed between the display and the substrate, and the plurality of electronic components and the elastic connection component are positioned with respect to the one divided housing,
In the second step, the one divided housing and the other divided housing may be joined while compressing the connector component between the display and the substrate.

  Thus, in a small electronic device that detects the number of steps, such as a pedometer, the electrical connection between the substrate and the display unit via the connector part made of an elastic material and the fixing inside the housing, the joining of the housing, and the like once. Can be done in the work.

In the plurality of electronic components,
A power supply for supplying power to the substrate and the display is included,
In the elastic connecting part,
It has a leaf spring portion that is elastically compressed and fixed between the substrate and the inner wall surface of the housing, and includes a power supply terminal that electrically connects the substrate and the power source,
In the first step, the power terminals are interposed between the substrate and the inner wall surface of the one split casing, and the plurality of electronic components and the elastic connection parts are positioned on the one split casing. And
In the second step, while compressing the leaf spring portion of the power terminal between the substrate and the inner wall surface of the one split casing, the one split casing and the other split casing It is good to join.

  Thereby, it is possible to perform electrical connection between the power source and the substrate in the small electronic device, fixation within the housing, joining of the housing, and one operation.

The plurality of electronic components further includes a buzzer having a diaphragm,
The one divided housing has a support portion that supports the vicinity of an edge on one surface of the diaphragm,
The other divided housing is configured to press the diaphragm against the support portion by pressing the vicinity of the edge of the other surface of the diaphragm in the same direction as the direction in which the elastic connecting component is compressed. Have
In the first step, the diaphragm is positioned on the support portion,
In the second step, the one divided housing and the other divided housing may be joined while pressing the pressing portion near the edge of the other surface of the diaphragm.

  Thereby, in the case where the small electronic device has a buzzer, the diaphragm of the buzzer can be fixed and the casing can be joined at the same time.

  As described above, according to the present invention, it is possible to make the assembly excellent.

  The best mode for carrying out the present invention will be exemplarily described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. .

(Example 1)
The example which implemented this invention to the electronic thermometer is demonstrated with reference to FIGS. FIG. 1 is an exploded perspective view of an electronic thermometer according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the electronic thermometer according to the first embodiment of the present invention. FIG. 3 is an enlarged view of a portion A in FIG. FIGS. 4A and 4B are enlarged views of a portion B in FIG. 2 for explaining the welding and joining of the casing of the electronic thermometer according to the first embodiment of the present invention, where FIG. 4A is a state before welding, and FIG. The later state is shown.

<Configuration of the entire electronic thermometer>
The overall configuration of the electronic thermometer according to the first embodiment of the present invention will be mainly described with reference to FIGS.

  An electronic thermometer 1 according to this embodiment includes an internal hollow housing 2 made of ABS resin or the like. The housing 2 includes a main body portion that houses electronic components such as an electronic substrate and a battery, and elastic connection components such as a connection connector and a battery terminal, and extends from the main body portion in a tapered manner and has a temperature inside the tip. And a temperature measuring unit in which the sensor is arranged. The main body of the housing 2 is provided with a display unit for displaying measured temperatures and the like. The body temperature measurement is performed when the temperature measuring unit of the housing 2 is sandwiched between the armpit or the tongue and a temperature sensor disposed at the tip thereof detects the temperature.

  The casing 2 is configured to be divided into two divided casings in the vertical direction along the longitudinal direction when the direction in which the temperature measuring unit extends from the main body is the longitudinal direction (upper casing 10). And the lower housing 11). The dividing surface of the housing 2 is formed along a virtual plane including the central axis in the longitudinal direction. Therefore, the housing 2 seems to be divided substantially symmetrically in the vertical direction from one end to the other end in the longitudinal direction. The upper casing 10 and the lower casing 11 correspond to the main body section and the temperature measuring section of the casing 2, respectively, and the main body section 10a, the temperature measuring section 10b, the main body section 11a, and the measuring section, respectively. It is the structure provided with the warm part 11b.

  Internal parts (electronic parts and elastic connection parts) housed in the main body of the housing 2 include a buzzer 12, a substrate 13, a connection connector (interconnector) 14, a display (LCD) 15, a battery terminal 16, and the like. It is.

  The buzzer 12 has a configuration in which a disc-shaped diaphragm and a piezoelectric plate are integrally provided. In addition, the specific structure of the buzzer 12 is a well-known technique, The description is abbreviate | omitted. The buzzer 12 is fitted and positioned in a positioning recess 11c provided in the lower housing 11, and is also near the edge (edge) on one surface of the diaphragm by an annular support provided in the positioning recess 11c. And a portion having a constant width) is supported. In addition, the buzzer 12 is pressed by a pair of pressing ribs (pressing portions) 10 c protruding from the inner wall surface of the upper housing 10 at two locations sandwiching the center of the diaphragm, near the edge of the other surface of the diaphragm. The diaphragm is pressed against and fixed to the support portion of the positioning recess 11c.

  The substrate 13 is sandwiched and fixed between a holding rib 10 d provided on the upper housing 10 and the connection connector 14. A temperature sensor (a temperature sensitive element such as a thermistor) 13a is connected to the substrate 13 via a lead wire, and an electronic circuit formed on the substrate 13 processes a signal detected by the temperature sensor 13a, and A control circuit that controls to display the measured temperature obtained by the processing on the display unit is included. In addition, a circuit for determining when the measurement is finished and controlling the buzzer 12 to make a sound is also included. Note that the specific configuration (block diagram) and the like of these electronic circuits are well-known techniques, and a description thereof will be omitted.

  The connection connector 14 is a pressure contact type connector part made of an elastic material, and is fixed in a compressed state between the substrate 13 and the display 15 and electrically connects the substrate 13 and the display 15. Connecting.

  The display 15 is fixed by fitting the display surface side into the opening 11 d of the lower housing 11 and press-contacting the opposite side with the connection connector 14.

The battery terminal 16 has a leaf spring structure, and the leaf spring portion 16a is compressed between the lower housing 11 of the substrate 13 to maintain an electrical connection between the substrate 13 and the battery 16b. Fixed in state.

<Method for manufacturing electronic thermometer>
The manufacturing method of the electronic thermometer 1 will be described mainly with reference to FIGS.

  The electronic thermometer 1 configured as described above first mounts and positions the internal components on the lower housing 11, and then covers the upper housing 10 to cover the upper housing 10 and the lower housing 11. The entire device is assembled and manufactured by welding the joint surface. Here, the internal components (electronic component and elastic connecting component) are fixed inside the housing 2 at the same time as the welding of the upper housing 10 and the lower housing 11.

  A welding rib 10 e is provided on the joint surface with the lower housing 11 of the upper housing 10. The welding rib 10e is provided over the entire circumference of the joint surface. Welding is performed by applying ultrasonic vibrations by placing the upper housing 10 on the lower housing 11 attached to the jig 30 while housing each internal component, and applying the horn 40 to the outer peripheral surface of the upper housing 10. This is performed by pressing (sliding) the upper housing 10 against the lower housing 11 while finely moving the upper housing 10. In the upper housing 10 against which the horn 40 is pressed, the welding rib 10e is melted by vibration and pressing by ultrasonic waves, so that the joint surface with the lower housing 11 is welded.

  As shown in FIG. 4A, at the stage where the upper housing 10 is covered, the welding rib 10 e abuts on the joint surface of the lower housing 11, and the joint surface between the upper housing 10 and the lower housing 11. They are not in contact with each other. Therefore, each internal component is in a state of being in contact with each other, but is not yet completely fixed, and is positioned at each predetermined fixing position, so that the upper housing 10 and the lower housing 11 It is in a state of being pinched loosely.

  As shown in FIG. 4B, the joint surface between the upper housing 10 and the lower housing 11 is a virtual surface that is perpendicular to the direction in which the connector spring 14 and the leaf spring portion 16 a of the battery terminal 16 are compressed. The upper housing 10 and the lower housing 11 are pressed against each other in the same direction as the direction in which the connection connector 14 and the leaf spring portion 16a of the battery terminal 16 are compressed. Accordingly, when the welding rib 10e is melted by the ultrasonic wave and the joining surface between the upper housing 10 and the lower housing 11 is completely joined, the plate spring portion 16a of the connection connector 14 and the battery terminal 16 is connected to the housing. It will be in the state compressed elastically between the body 2 and each internal component. Thereby, each internal part will be in the state firmly fixed inside the housing | casing 2. FIG.

  That is, when the upper casing 10 and the lower casing 11 are welded and joined, the pressure applied from the horn 40 compresses the connection connector 14 and the leaf spring portion 16a of the battery terminal 16 in the vertical direction via the substrate 13. The Further, the pressing rib 10 c of the upper housing 10 presses the buzzer 12. Accordingly, the substrate 13 is pressed and fixed from above and below by the pressing rib 10 d of the upper housing 10 and the connection connector 14, and the display unit 15 is pressed and fixed from above and below by the connection connector 14 and the lower housing 11. Further, the battery terminal 16 is pressed and fixed from above and below by the upper housing 10 and the lower housing 11 with the leaf spring portion 16 a interposed therebetween.

  The holding rib 10c that presses the vicinity of the edge of the diaphragm of the buzzer 12 is made of the same resin material as the housing, and has a certain degree of flexibility. Therefore, when the upper casing 10 and the lower casing 11 are completely welded, if they are pressed against the edge of the diaphragm in a slightly bent state, the diaphragm The vicinity of the edge can be more firmly fixed.

The height of the welding rib 10e is such that when the internal components are compressed by welding of the housing, the connection connector 14 and the leaf spring portion 16a can ensure sufficient electrical contact pressure, and the holding rib 10c The height is set appropriately so that the vicinity of the edge of the diaphragm can be pressed firmly.

<Excellent points of this embodiment>
According to the electronic thermometer according to the present embodiment, the joining surfaces of the upper housing and the lower housing are welded together by melting the welding ribs, and at the same time, the respective internal components are pressed against each other. That is, the joining of the housing and the positioning and fixing of the internal components inside the housing can be performed in one operation. Therefore, the assembling work is simplified, and the number of work processes can be reduced and the manufacturing cost can be reduced.

  Further, before the upper housing and the lower housing are welded and joined, that is, when the welding rib provided on the joining surface of the upper housing is in contact with the joining surface of the lower housing, The internal components are positioned at their predetermined positions and are in contact with each other. Therefore, when the joint surface between the upper housing and the lower housing is welded, each internal component is further pressed from above and below by the upper housing and the lower housing as much as the weld rib is not melted. It becomes a state to be. Thereby, sufficient electrical pressure contact between electronic components, such as a board | substrate and a display, and elastic connection components, such as a connection connector and a battery terminal, can be ensured.

  In addition, the buzzer can obtain a higher sound volume even if the entire device is small by firmly fixing the vicinity of the edge of the diaphragm by the holding rib having flexibility.

(Example 2)
The example which implemented this invention to the pedometer is demonstrated with reference to FIGS. FIGS. 5A and 5B are schematic diagrams illustrating the configuration of a pedometer 1a according to the second embodiment of the present invention, in which FIG. 5A is an exploded perspective view and FIG. 5B is a perspective view. 6A and 6B are cross-sectional views of the pedometer according to the second embodiment of the present invention, in which FIG. 6A shows a state in which each component is disassembled, and FIG. 6B shows a state in which each member is integrated. . FIG. 7 is an enlarged view of a portion C in FIG. 6B, where FIG. 7A shows a state before welding, and FIG. 7B shows a state after welding.

  The pedometer 1a according to the present embodiment has a configuration in which a casing is divided substantially symmetrically into an upper casing 17a and a lower casing 17b. Internal components such as a display (LCD) 18, a connection connector (interconnector) 19, and a substrate 20 are accommodated in the housing. The specific configuration of the pedometer 1a is a well-known technique and will not be described in detail. The pedometer 1a includes a pedometer sensor for detecting the number of steps, a battery as a power source, a user's pedometer, in addition to the internal components. Further, a power switch, an operation button, and the like are provided. Examples of the step sensor include a pendulum type sensor, a PZT cantilever type acceleration sensor in which a piezoelectric element is attached to a plate-like member having a cantilever structure, a chip type acceleration sensor, and the like. The substrate 20 is formed with a control circuit or the like that processes data detected by the step sensor and controls the display unit 18 to display the measured number of steps obtained by the processing. The specific configuration (block diagram) of the control system of the pedometer 1a is also a known technique, and a description thereof will be omitted.

  As shown in FIG. 6, the welding rib 17c is provided in the joint surface with the lower housing | casing 17b of the upper housing | casing 17a. The welding rib 17c is provided over the entire circumference of the joint surface of the upper housing 17a. As in the case of the electronic thermometer of the first embodiment, welding is performed by placing the upper housing 17a on the lower housing 17b that is housed in a jig (not shown) and housing an internal horn. Ultrasonic vibration is applied to the outer peripheral surface of the body 17a, and the upper housing 17a is finely moved and pressed (glued) against the lower housing 17b. The upper casing 17a against which the horn is pressed is welded and bonded to the lower casing 17b by the welding rib 17c being melted by ultrasonic vibration and pressing.

  As shown in FIG. 7, the joint surface between the upper casing 17a and the lower casing 17b is provided along a virtual plane perpendicular to the direction in which the connection connector 19 is compressed, and the upper casing 17a. And the lower casing 17b are pressed against each other in the same direction as the direction in which the connection connector 19 is compressed. Therefore, the welding rib 17c is melted by ultrasonic waves (17c '), and the upper housing 17a and the lower housing 17b are joined by completely joining the joining surfaces of the upper housing 17a and the lower housing 17b. A connector 19 made of an elastic material is fixed to the substrate 20 while being compressed via the display 18.

  Therefore, also in the pedometer according to the present embodiment, similar to the electronic thermometer according to the first embodiment, the bonding surfaces of the upper housing and the lower housing are welded together by melting the welding ribs, and at the same time, each internal component The gaps are pressed against each other. Therefore, the joining of the housing and the positioning and fixing of the internal components inside the housing can be performed in one operation, the assembling work can be simplified, the number of work processes can be reduced, and the manufacturing cost can be reduced. .

  The configuration of the embodiment described above is only one specific example of the present invention. The present invention is not limited to the above specific examples, and various modifications are possible within the scope of the technical idea. Therefore, the small electronic device to which the present invention is applied is not limited to the electronic thermometer and the pedometer as described above, and the electronic components housed in the housing are connected by an elastic connecting member. If this is provided, this invention can be applied suitably.

It is a disassembled perspective view of the electronic thermometer which concerns on Example 1 of this invention. It is sectional drawing of the electronic thermometer which concerns on Example 1 of this invention. It is the A section enlarged view of FIG. It is the B section enlarged view of FIG. 2 explaining the mode of joining of the housing | casing of the electronic thermometer which concerns on Example 1 of this invention. It is a schematic diagram explaining the structure of the pedometer which concerns on Example 2 of this invention. It is sectional drawing of the pedometer which concerns on Example 2 of this invention. It is the C section enlarged view of Drawing 6 (b). It is a typical perspective view explaining the structure of the internal component of the electronic thermometer which concerns on a prior art example. It is a schematic diagram explaining the structure of the electronic thermometer which concerns on a prior art example. It is sectional drawing of the electronic thermometer which concerns on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic thermometer 2 Housing | casing 10 Upper housing | casing 10e Welding rib 11 Lower housing | casing 12 Buzzer 13a Temperature sensor 13 Board | substrate 14 Connection connector 15 Indicator 16b Battery 16 Battery terminal 16a Leaf spring part

Claims (12)

An internal hollow housing;
A plurality of electronic components housed in the housing;
The plurality of electronic components are fixed in the casing together with the plurality of electronic components by being elastically compressed between the plurality of electronic components or between the electronic component and the casing. Elastic connection parts that electrically connect parts;
In a small electronic device comprising:
The housing is divided by a dividing surface along a virtual plane perpendicular to the direction in which the elastic connection component is compressed,
A small electronic device characterized in that one of the divided housings and the other divided housing are pressed and joined to each other by ultrasonic welding so that the elastic connecting component is compressed. In the plurality of electronic components,
A substrate on which a control circuit for controlling a small electronic device is formed;
A display controlled by the control circuit;
Contains
In the elastic connecting part,
The small electronic device according to claim 1, further comprising a connector component made of an elastic material that electrically connects the substrate and the display. In the plurality of electronic components,
A temperature sensor for detecting the temperature;
A display for displaying a measured temperature based on data detected by the temperature sensor;
A substrate on which a control circuit is formed to process the data detected by the temperature sensor and control the display unit to display the measured temperature obtained by the processing;
Contains
In the elastic connecting part,
The small electronic device according to claim 1, further comprising a connector component made of an elastic material that electrically connects the substrate and the display. In the plurality of electronic components,
A step sensor for detecting the number of steps;
A display for displaying the number of steps measured based on the data detected by the step sensor;
A substrate on which a control circuit is formed to process the data detected by the step sensor and control the display unit to display the measured number of steps obtained by the processing;
Contains
In the elastic connecting part,
The small electronic device according to claim 1, further comprising a connector component made of an elastic material that electrically connects the substrate and the display. In the plurality of electronic components,
A power supply for supplying power to the substrate and the display is included,
In the elastic connecting part,
The power supply terminal includes a leaf spring portion that is elastically compressed and fixed between the substrate and the inner wall surface of the housing, and electrically connects the substrate and the power source. Item 5. The small electronic device according to any one of Items 2 to 4. The plurality of electronic components further includes a buzzer having a diaphragm,
The other divided housing has a support portion that supports the vicinity of an edge on one surface of the diaphragm,
The one split housing presses the diaphragm against the support portion by pressing the vicinity of the edge of the other surface of the diaphragm in the same direction as the direction in which the elastic connecting component is compressed. The small electronic device according to claim 1, further comprising a portion. An internal hollow housing;
A plurality of electronic components housed in the housing;
The plurality of electronic components are fixed in the casing together with the plurality of electronic components by being elastically compressed between the plurality of electronic components or between the electronic component and the casing. Elastic connection parts that electrically connect parts;
In a method for manufacturing a small electronic device comprising:
A first step of attaching the plurality of electronic components and the elastic connection component to one split housing of the housing divided by a split surface along a virtual plane perpendicular to the direction in which the elastic connection component is compressed. When,
A second step of joining the one divided housing and the other divided housing together by compressing the elastic connecting part and pressing them together by ultrasonic welding;
A method of manufacturing a small electronic device, comprising: In the plurality of electronic components,
A substrate on which a control circuit for controlling a small electronic device is formed;
A display controlled by the control circuit;
Contains
In the elastic connecting part,
A connector part made of an elastic material for electrically connecting the substrate and the display is included,
In the first step, the connector component is interposed between the substrate and the display, and the plurality of electronic components and the elastic connection component are positioned with respect to the one divided housing,
The said 2nd process WHEREIN: While compressing the said connector components between the said board | substrate and the said indicator, joining the said one division | segmentation housing | casing and the said other division | segmentation housing | casing is characterized by the above-mentioned. The manufacturing method of the small electronic device of description. In the plurality of electronic components,
A temperature sensor for detecting the temperature;
A display for displaying a measured temperature based on data detected by the temperature sensor;
A substrate on which a control circuit is formed to process the data detected by the temperature sensor and control the display unit to display the measured temperature obtained by the processing;
Contains
In the elastic connecting part,
A connector part made of an elastic material for electrically connecting the substrate and the display is included,
In the first step, the connector component is interposed between the display and the substrate, and the plurality of electronic components and the elastic connection component are positioned with respect to the one divided housing,
The said 2nd process WHEREIN: While compressing the said connector components between the said indicator and the said board | substrate, joining the said one division | segmentation housing | casing and the said other division | segmentation housing | casing is characterized by the above-mentioned. The manufacturing method of the small electronic device of description. In the plurality of electronic components,
A step sensor for detecting the number of steps;
A display for displaying the number of steps measured based on the data detected by the step sensor;
A substrate on which a control circuit is formed to process the data detected by the step sensor and control the display unit to display the measured number of steps obtained by the processing;
Contains
In the elastic connecting part,
A connector part made of an elastic material for electrically connecting the substrate and the display is included,
In the first step, the connector component is interposed between the display and the substrate, and the plurality of electronic components and the elastic connection component are positioned with respect to the one divided housing,
The said 2nd process WHEREIN: While compressing the said connector components between the said indicator and the said board | substrate, joining the said one division | segmentation housing | casing and the said other division | segmentation housing | casing is characterized by the above-mentioned. The manufacturing method of the small electronic device of description. In the plurality of electronic components,
A power supply for supplying power to the substrate and the display is included,
In the elastic connecting part,
It has a leaf spring portion that is elastically compressed and fixed between the substrate and the inner wall surface of the housing, and includes a power supply terminal that electrically connects the substrate and the power source,
In the first step, the power terminals are interposed between the substrate and the inner wall surface of the one split casing, and the plurality of electronic components and the elastic connection parts are positioned on the one split casing. And
In the second step, while compressing the leaf spring portion of the power terminal between the substrate and the inner wall surface of the one split casing, the one split casing and the other split casing The method for manufacturing a small electronic device according to claim 8, wherein the bonding is performed. The plurality of electronic components further includes a buzzer having a diaphragm,
The one divided housing has a support portion that supports the vicinity of an edge on one surface of the diaphragm,
The other divided housing is configured to press the diaphragm against the support portion by pressing the vicinity of the edge of the other surface of the diaphragm in the same direction as the direction in which the elastic connecting component is compressed. Have
In the first step, the diaphragm is positioned on the support portion,
The said 2nd housing | casing is joined to said other division housing | casing, pressing the said press part to the edge vicinity in the other surface of the said diaphragm in the said 2nd process. The manufacturing method of the small electronic device in any one of 11.

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