JP2009300310A - Electronic clinical thermometer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic clinical thermometer having excellent assemblability because of being formed so that a wide range area is opened. <P>SOLUTION: The electronic clinical thermometer 1 includes cases 10a, 10b having a hollow inside; a temperature sensor 3 arranged on the tip on one end side in the longitudinal direction of the hollow inside of the cases 10a, 10b; and an internal component 2 connected to the temperature sensor 3 through a lead wire 3a, and arranged on the other end side in the longitudinal direction of the hollow inside of the cases 10a, 10b. The cases 10a, 10b are divided so that an opening for mounting the temperature sensor 3 and the internal component 2 inside the cases is formed with a size for opening a domain from an arrangement domain of the temperature sensor 3 to an arrangement domain of the internal component 2 along the longitudinal direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electronic thermometer having a temperature sensor.

  Electronic thermometers generally have a configuration in which a temperature sensor, an electronic substrate, and the like are accommodated inside a hollow casing. As the LSI and other electronic circuit elements have been reduced in size, the entire apparatus can be technically reduced in size. On the other hand, when an electronic thermometer is used in a hospital or the like, infection prevention processing such as disinfection and washing of the outer surface of the thermometer is indispensable from the viewpoint of preventing mutual infection of patients through the electronic thermometer. The housing is required to have high waterproofness.

  Various types of housing structures for such electronic thermometers have been proposed (see each patent document).

  For example, Patent Documents 1 and 2 disclose structures that impart waterproofness to a casing by making the entire casing a single member without a tubular joint. However, this structure has a configuration in which internal parts are inserted and incorporated through an opening provided at the rear end of the housing, and there remains a problem in assemblability.

  Patent Documents 3 and 4 propose a structure in which a housing opening is provided in the longitudinal direction to improve assemblability. However, the assembly work that can be automated is the work up to the integration of the internal parts, and the work for incorporating the subassembly integrated with the temperature sensor into the housing is still a manual work.

  The measurement accuracy (temperature responsiveness) of the thermometer is greatly influenced by the position where the temperature sensor is fixed when the temperature sensing unit is assembled (a temperature sensor such as a thermistor is assembled). However, with the conventional structure as described above, it is difficult to accurately fix the temperature sensor at an appropriate position. Furthermore, it is necessary to provide components for holding component parts such as circuit boards and batteries separately from the casing.

  A representative example of the casing structure of the electronic thermometer according to the conventional example will be described with reference to FIGS. FIG. 12 is an exploded perspective view for explaining the structure of a conventional electronic thermometer. FIG. 13 is a schematic diagram of an electronic thermometer according to a conventional example, (a) is a plan view of the electronic thermometer, and (b) to (d) are FF cross sections of (a).

  As shown in FIG. 12, the electronic thermometer 100 according to the conventional example is provided with openings at both ends in the longitudinal direction of a substantially cylindrical casing 102. First, the internal subassembly 104 to which the temperature sensor 103 is connected via the lead wire is inserted through the wide-mouth opening at the rear end so that the temperature sensor 103 protrudes from the opening at the front end. And incorporate. Then, a metal cap 101 filled with adhesive is attached to the opening on the front end side of the housing 102 so as to cover the temperature sensor 103, and the battery cover 105 is attached to the opening on the rear end side to complete the assembly. To do.

As described above, in the conventional housing structure, from the viewpoint of waterproofness, it is common not to provide a joint portion around the temperature measuring portion of the housing where the temperature sensor 103 is disposed. 103 and the internal subassembly 104 are attached by a method of inserting into the housing through an opening provided at the rear end of the housing. However, since it is difficult to connect the lead wire after the temperature sensor 103 and the internal subassembly 104 are attached to the inside of the housing because the housing 102 is small, the temperature sensor 103 and the internal subassembly 104 are connected to the housing 102 in a state in which the lead wire is connected in advance. Must be assembled. Therefore, the work of passing the temperature sensor 103 through the inside of the cylindrical casing 102 among the assembling work usually has to be performed manually and is difficult to automate. The temperature sensor 103 is fixed inside the cap 101 by the filled adhesive. As shown in FIGS. 13 (b) to 13 (d), the temperature sensor 103 depends on the length of the lead wire and the amount of deflection. The position (amount) at which the face is projected from the front end opening of the housing 102 changes. Therefore, it is difficult to fix the temperature sensor 103 at a suitable position.

  In particular, when downsizing the device, it is necessary to insert a small temperature sensor and internal parts into the space inside the narrow housing hollow, so that handling by hand is poor and workability of assembly work is further deteriorated. . That is, for example, it is an operation of passing a thread through a needle.

Other related technologies include those disclosed in Patent Documents 5 to 7.
Japanese Utility Model Publication No. 63-35383 Japanese Patent Publication No. 3-44648 Japanese Patent Laid-Open No. 10-48060 Japanese Utility Model Publication No. 62-96522 Japanese Patent Publication No. 3-22569 Japanese Utility Model Publication No. 57-32827 Japanese Utility Model Publication No. 3-18899

  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 an electronic thermometer excellent in assemblability.

In order to achieve the above object, the electronic thermometer of the present invention comprises:
An internal hollow housing;
A temperature sensor disposed at the tip of one end side in the longitudinal direction of the hollow interior of the housing;
An internal component connected to the temperature sensor via a lead wire and disposed on the other longitudinal end side in the hollow interior of the housing;
In an electronic thermometer equipped with
The housing is large in that an opening for attaching the temperature sensor and the internal component inside the housing opens a region including a region from the temperature sensor arrangement region to the internal component arrangement region along the longitudinal direction. It is divided so that it may be formed.

  According to the present invention, the opening for attaching the temperature sensor and the internal component inside the housing formed by dividing the housing is arranged along the longitudinal direction from the region where the temperature sensor is arranged. Since it is formed so as to open a wide area up to the area, it is easy to attach the temperature sensor and internal components connected by lead wires to the inside of the housing.

  The housing may be divided by a dividing surface passing through a central axis along a longitudinal direction in a temperature measuring unit in which the temperature sensor is arranged.

  In this way, by dividing the casing by a dividing surface passing through the central axis along the longitudinal direction in the temperature measuring unit where the temperature sensor is arranged, the arrangement area of the temperature sensor and the arrangement area of the internal components in the casing are obtained. The temperature sensor opened in a direction substantially perpendicular to the longitudinal direction and connected with a lead wire and the internal components can be easily attached.

  Positioning means for positioning the temperature sensor at a position in contact with the inner wall surface of the housing may be provided in at least one of the divided housings.

  Thereby, in the stage which attaches a temperature sensor to one division | segmentation housing | casing, a temperature sensor can be positioned in the position which contacts the inner wall face of a housing | casing.

  The positioning means may hold a boundary portion of the lead wire with the temperature sensor in a state where the temperature sensor is in contact with the inner wall surface of the housing.

  Thus, by holding the boundary portion of the lead wire with the temperature sensor, that is, the base portion of the temperature sensor, the temperature sensor can be positioned while suppressing the positional deviation.

The positioning means has a rib that protrudes from an inner wall surface of the housing and abuts on a boundary portion between the temperature sensor and the lead wire,
A groove in which a boundary portion between the lead wire and the temperature sensor is sandwiched may be formed at the tip of the rib.

  In this way, the base portion of the temperature sensor can be held more firmly.

  When joining the divided | segmented housing | casing, it is good to provide the holding means which hold | maintains the said temperature sensor positioned by said one division | segmentation housing | casing in the positioned position.

  In this way, by holding the temperature sensor at the positioning position by the holding means, it is possible to suppress the occurrence of positional deviation of the temperature sensor when the housing is integrated. Therefore, the workability of the assembly work can be improved.

  The holding means is provided on the other divided housing so as to protrude in a direction opposite to the one divided housing, and the joining surfaces of the other divided housing and the one divided housing are connected to each other. It is good that it is a protrusion part which contacts the said lead wire before contacting.

  Thereby, when joining the divided | segmented housing | casing, a temperature sensor can be hold | maintained in a positioning position because a lead wire is pressed down by a protrusion part.

In order to achieve the above object, the electronic thermometer of the present invention is
An internal hollow housing having an opening at one longitudinal end;
A temperature sensor disposed at one end in the longitudinal direction of the casing so as to be exposed to the outside of the casing from the opening;
A cap that covers the temperature sensor and closes the opening;
An internal component connected to the temperature sensor via a lead wire and disposed on the other longitudinal end side in the hollow interior of the housing;
In an electronic thermometer equipped with
The housing is sized so that an opening for attaching the temperature sensor and the internal component to the housing opens a region including the temperature sensor placement region to the internal component placement region along the longitudinal direction. Is divided to form in
Before the cap is attached to the casing, positioning means is provided for positioning the temperature sensor at a position where the temperature sensor can contact the inner wall surface of the cap.

According to the present invention, the opening for attaching the temperature sensor and the internal components to the inside of the housing formed by dividing the housing is provided along the longitudinal direction from the temperature sensor arrangement region in the housing. Since it is formed so as to open a wide area up to the part placement area, it is easy to attach the temperature sensor and the internal parts connected to each other through the lead wires inside the casing.

  Moreover, the range of selection of the housing material of an electronic thermometer can be expanded by setting the temperature sensor to be in contact with a cap that is a separate member from the housing. For example, measurement accuracy can be improved by using a metal member such as SUS having excellent thermal conductivity for the cap.

  The housing may be divided by a dividing surface passing through a central axis along a longitudinal direction in a temperature measuring unit in which the temperature sensor is arranged.

  In this way, by dividing the casing into approximately half by a dividing plane passing through the central axis along the longitudinal direction in the temperature measuring unit where the temperature sensor is arranged, the arrangement area of the temperature sensor and the internal components of the casing are divided. The arrangement region is opened in a direction substantially perpendicular to the longitudinal direction, and the temperature sensor and internal components connected by lead wires can be easily attached.

The positioning means has a rib that protrudes from an inner wall surface of the housing and abuts on a boundary portion between the temperature sensor and the lead wire,
A groove in which a boundary portion between the lead wire and the temperature sensor is sandwiched may be formed at the tip of the rib.

  Thereby, the position in the longitudinal direction of a temperature sensor can be positioned in the step which attaches a temperature sensor to one division | segmentation housing | casing. Further, by holding the boundary portion of the lead wire with the temperature sensor, that is, the base portion of the temperature sensor, it is possible to position the temperature sensor while suppressing the displacement.

The positioning means includes
The other split casing is provided so as to protrude in the direction facing the one split casing, and when the split casings are joined, the one split casing is positioned in the longitudinal direction. Further, the temperature sensor has a protruding portion that comes into contact before the joining surfaces of one divided housing and the other divided housing come into contact with each other and determines a position in a direction perpendicular to the longitudinal direction of the temperature sensor. Good.

  Thereby, before a cap is attached to a housing | casing, a temperature sensor can be positioned in the position which can contact the inner wall face of a cap.

The positioning means includes
The other divided housing is provided so as to protrude in the direction facing the one divided housing, and when the divided housing is joined, the one divided housing is connected to the lead wire. It is good to have the 2nd protrusion part which contacts before the joint surfaces with the other division | segmentation housing | casing contact.

  Thereby, when joining the divided | segmented housing | casing, a temperature sensor can be hold | maintained in a positioning position because a lead wire is pressed down by the 2nd protrusion part.

  The divided casings may be joined by bonding with an adhesive or ultrasonic welding.

  Thereby, a highly waterproof housing can be obtained.

  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)
With reference to FIGS. 1-5, the electronic thermometer which concerns on Example 1 of this invention is demonstrated. FIG. 1 is a plan view of an electronic thermometer according to Embodiment 1 of the present invention. 2A and 2B are exploded perspective views of the electronic thermometer according to the first embodiment of the present invention, in which FIG. 2A is a state before the temperature sensor and the internal parts are assembled, and FIG. Each state after being assembled to the housing is shown. 3A and 3B are schematic views of one divided housing, in which FIG. 3A is a plan view of an opening formed in one divided housing by dividing the housing, and FIG. 3B is a B portion of FIG. It is an enlarged view, (c) is CC sectional drawing of (b). 4A and 4B are schematic views of the electronic thermometer according to the first embodiment of the present invention, in which FIG. 4A is a cross-sectional view of the electronic thermometer, and FIG. 4B is an enlarged view of a D portion of FIG. The state, (c) is an enlarged view of the D part of (a), and shows the state after the housing is joined. FIGS. 5A and 5B are enlarged views corresponding to part D in FIG. 4A, in which FIG. 5A shows a state before joining the housing and FIG. 5B shows a state after joining the housing.

<Electronic thermometer>
Mainly referring to FIG. 1, the configuration of the entire electronic thermometer according to the first embodiment of the present invention will be described.

  As shown in FIG. 1, the electronic thermometer according to the present embodiment includes an internal hollow housing 10 made of ABS resin or the like. The housing 10 is composed of a main body 11 in which internal components such as an electronic substrate and a battery are accommodated, and a temperature measuring unit 12 that extends from the main body 11 in a tapered shape and has a temperature sensor disposed inside the tip. Yes. The main body part 11 is provided with a display part 13 for displaying the measured temperature and the like.

  The body temperature measurement is performed by the temperature measuring unit 12 being sandwiched between the armpit or the tongue, and the temperature sensor disposed at the tip of the temperature measuring unit 12 detecting the temperature. An electronic substrate on which an electronic circuit for processing a signal detected by a temperature sensor (a temperature sensitive element such as a thermistor) and displaying a temperature on the display unit 11 is formed in an internal component housed in the main body unit 11 Etc. are included. This electronic substrate and the like are publicly known techniques, and the description thereof is omitted.

<Case structure>
The housing structure of the electronic thermometer 1 according to the present embodiment will be described mainly with reference to FIG.

  As shown in FIG. 2, the casing 10 has a longitudinal direction when the direction in which the temperature measuring unit 12 extends from the main body 11 is the longitudinal direction, the surface on which the display unit 13 is provided is the upper surface, and the opposite side is the lower surface. The upper casing 10a and the lower casing 10b are divided into two divided casings along the upper and lower sides. In FIG. 2, the display unit 13 is disposed so as to face downward, and is upside down.

  The casing 10 is divided from one end to the other end in the longitudinal direction by a plane including the central axis in the longitudinal direction, and the upper casing 10a and the lower casing 10b are substantially symmetrical in the vertical direction. . That is, the upper casing 10a and the lower casing 10b correspond to the main body 11 and the temperature measuring section 12 of the casing 10, respectively, and the main body 11a, the temperature measuring section 12a, the main body 11b, and the temperature measuring section 12b. It is the composition provided with.

  The electronic thermometer 1 having such a housing structure is assembled by attaching the internal component 2, the temperature sensing element (thermistor) 3 as a temperature sensor, etc. to one divided housing (upper housing 10 a) and then the other. This is performed by joining the divided housing (lower housing 10b) to one of the divided housings so as to cover the internal component 2 and the temperature sensor 3. The internal component 2 includes, for example, a substrate 4 to which the temperature sensing element 3 is electrically connected via a lead wire, a liquid crystal display (LCD) 5 for displaying temperature on the display unit 11, a battery as a power source, and the like. 6, battery terminal 7 and the like are included.

  Examples of the bonding method between the upper housing 10a and the lower housing 10b include adhesion with an adhesive and ultrasonic welding. However, if the bonding method can ensure the waterproofness of the housing 10, The method is not limited to these methods.

  The temperature sensing element 3 is positioned by a positioning means to be described later at a predetermined position at the tip of the temperature measuring unit 12a of the upper housing 10a, that is, a position in contact with the inner wall surface of the tip of the temperature measuring unit 12 of the housing 10. It is like that. Further, although detailed description of each part of the internal part 2 is omitted, the positioning ribs and the concavo-convex parts provided on the main body part 11a of the upper casing 10a are used for the final assembly when assembled to the upper casing 10a. Positioning or fixing is performed.

<Temperature sensor positioning means>
The temperature sensor positioning means will be described mainly with reference to FIG.

  A rib 8 serving as a positioning means for the temperature sensing element 3 is provided in the vicinity of the tip of the temperature measuring unit 12a of the upper housing 10a. The rib 8 is provided so as to protrude in a direction perpendicular to the longitudinal direction from a concave curved surface that forms an inner wall surface of the housing 10 after joining the lower housing 10b in the upper housing 10a. .

  The rib 8 is configured so that the tip of the temperature sensing element 3 is in contact with the concave curved surface at the tip of the temperature measuring unit 12a of the upper housing 10a, that is, the inner wall surface at the tip of the temperature measuring unit 12a of the housing 10. Is provided so as to be in contact with the opposite side, that is, the boundary portion of the temperature sensing element 3 with the lead wire 3a and sandwich the temperature sensing element 3 with the concave curved surface at the tip of the temperature measuring portion 12a. Yes.

  Also, the rib 8 has a substantially U-shaped tip, and the rib 8 has a U-shaped groove 8a that is cut out in the longitudinal direction at the tip. The groove 8a is provided so that the boundary portion between the lead wire 3a and the temperature sensing element 3 is sandwiched, and the width thereof is wider than the width (diameter) of the lead wire 3a and is larger than the width of the temperature sensing element 3. It is set to be narrow. The lead wire 3a is restricted from being displaced in the direction perpendicular to the longitudinal direction by the side walls 8b and 8c of the groove 8a.

  By providing such a rib 8, the temperature sensing element 3 is positioned at a position in contact with the inner wall surface at the tip of the temperature measuring part 12 a of the housing 10 at the stage of attachment to the upper housing 10 a, and the rib The root portion is held by the eight groove portions 8a.

  Further, the groove 8a of the rib 8 regulates the position shift of the boundary between the lead wire 3a and the temperature sensing element 3, that is, the base portion of the temperature sensing element 3, so that the lead wire 3a is pulled during other work. Even when a force is applied to the lead wire 3a due to the above or the like, the temperature sensitive element 3 is prevented from being displaced.

Moreover, since the temperature sensing element 3 can be reliably disposed at a position in contact with the inner wall surface at the tip of the temperature measuring unit 12 and can be directly brought into contact with the inner wall surface of the housing, measurement accuracy and responsiveness can be improved. . In particular, as in this embodiment, even when the case temperature measuring unit is made of a resin material instead of a metal material having good thermal conductivity, the temperature sensing element is brought into direct contact with the case. Stable measurement accuracy can be obtained.

<Temperature sensor holding means>
The temperature sensor holding means will be described mainly with reference to FIGS.

  As shown in FIG. 4, a pressing rib 9 that is perpendicular to the longitudinal direction and protrudes in a direction facing the upper casing 10a is provided near the tip of the temperature measuring section 12b in the lower casing 10b. The holding rib 9 protrudes to the upper housing 10a side as a holding means of the temperature sensing element 3 from the joint surface with the upper housing 10a of the lower housing 10b, and the lower housing 10b and the upper housing 10a. Is provided so as to come into contact with the lead wire 3a before the contact surfaces thereof come into contact with each other. The holding rib 9 is provided on the opposite side of the rib 8 from the temperature sensing element 3 side so as to press the lead wire 3a away from the bonding surface of the housing.

  By providing such a holding rib 9, the lead wire 3 a has a position shift in the depth direction of the groove portion 8 a of the rib 8 at the boundary portion with the temperature sensing element 3, due to the groove bottom of the holding rib 9 and the groove portion 8 a. Be regulated. That is, in the state where the lower housing 10b and the upper housing 10a are joined, the positional deviation of the boundary between the lead wire 3a and the temperature sensitive element 3 in all directions perpendicular to the longitudinal direction is restricted. Thereby, the temperature sensing element 3 is in a state where the base portion of the boundary with the lead wire 3a is held.

  Further, since the lead wire 3a is pressed by the pressing rib 9 before the lower housing 10b and the upper housing 10a are joined, the space between the lead wire 3a and the housing joining surface is narrow. It is possible to suppress the periphery of the boundary portion from being bitten by the joint surface of the housing. Therefore, for example, even when the length of the lead wire 3a is excessive, the housing can be more reliably joined without causing the positional deviation of the temperature sensing element 3 and the biting of the lead wire 3a. .

  For holding the temperature sensing element 3, instead of providing the holding rib 9 as described above, an adhesive 9a is applied to the concave curved surface at the tip of the temperature measuring portion 12a of the upper housing 10a as shown in FIG. The temperature sensitive element 3 may be adhered to the concave curved surface. It is also possible to use the adhesive 9a and the holding rib 9 in combination.

<Modification>
With reference to FIGS. 6-8, the electronic thermometer which concerns on the modification of a present Example is demonstrated. FIG. 6 is an exploded perspective view of the electronic thermometer according to the first modification of the present embodiment. FIG. 7 is an exploded perspective view of an electronic thermometer according to the second modification of the present embodiment. FIG. 8 is an exploded perspective view of an electronic thermometer according to Modification 3 of the present embodiment.

  In the above-described embodiments, except for the configuration of the temperature measuring unit at the front end of the casing, various configurations that have been known in the past are appropriately adopted for some configurations such as the internal parts and the rear end side of the casing. Can do.

  For example, as in Modification 1 shown in FIG. 6, the sub-assembly 2a in which internal components such as a substrate, an LCD, a battery, and a battery terminal are integrated in advance before being attached to the housing can be formed. In this case, as shown in the figure, a rib 8d that can position the subassembly 2a may be provided on the inner wall surface of the housing.

Further, as in Modification 2 shown in FIG. 7, each component of the internal component 2 may be fixed on one substrate to form the subassembly 2 b. Also in this case, as shown in the drawing, it is preferable to provide ribs 8e and uneven portions 8f that can position the subassembly 2a on the inner wall surface of the housing.

  Further, as in Modification 3 shown in FIG. 8, in the structure according to Modification 1, a battery cover 10c may be provided at the rear end of the housing so that the battery can be replaced.

<Excellent points of this embodiment>
In the electronic thermometer according to the present embodiment, the entire housing 10 including the tip portion where the temperature sensing element 3 is disposed is from one end to the other end in the longitudinal direction, that is, from the region where the temperature sensing element 3 is disposed along the longitudinal direction. The entire area including the arrangement area of the internal component 2 is divided so as to be opened. Therefore, the opening for attaching the temperature sensitive element 3 and the internal component 2 extends from one end to the other end in the longitudinal direction of the casing, that is, from the arrangement region of the temperature sensitive element 3 to the arrangement region of the internal component 2. The temperature sensitive element 3 and the internal component 2 that are formed in a large size and connected by the lead wire 3a can be easily attached.

  In addition, the attachment of the temperature sensing element 3 and the internal component 2 is a work of widely opening each part formed in the divided casing and fitting the parts through the opening. Since it is not a difficult task unless it is a manual operation such as inserting a sheet, it is possible to automate the entire assembly operation.

  In addition, by making the casing 10 have the above-described divided structure, the temperature sensitive element 3 can be positioned and held with a simple configuration such as the rib 8 and the holding rib 9. Further, according to the configuration of the ribs 8 and the holding ribs 9 in the present embodiment, the divided housings are joined while suppressing the displacement of the temperature sensing element 3 and the lead wire 3 biting when joining the divided housings. can do. Therefore, the workability of the assembly work is improved.

  Further, by positioning the temperature sensing element 3 in direct contact with the inner wall surface of the tip of the temperature measuring unit 12 of the housing 10, the measurement accuracy can be improved, and the adhesive filling can be performed as in the conventional case. Since it becomes unnecessary and responsiveness can be improved, quality can be improved and production cost can be reduced.

(Example 2)
With reference to FIGS. 9-11, the electronic thermometer which concerns on Example 2 of this invention is demonstrated. FIG. 9 is an exploded perspective view of the electronic thermometer according to the second embodiment of the present invention. FIG. 10 is a cross-sectional view of an electronic thermometer according to Embodiment 2 of the present invention. 11 is an enlarged view corresponding to part E in FIG. 10, (a) is a state before joining the housing, (b) is a state after joining the housing, and (c) is a state after attaching the cap. Show.

  Here, only differences from the above embodiment will be described, and common members and configurations will be denoted by the same reference numerals and description thereof will be omitted. The same applies to actions and effects caused by common members and configurations.

  In the present embodiment, unlike the first embodiment, the configuration is such that the tip of the temperature measuring unit 12 of the housing 10 is opened, and the cap 30 is put on the opening after the housing 10 is joined. ing. The cap 30 is made of a member having good thermal conductivity such as SUS, and the temperature sensitive element 3 is in contact with and fixed to the inner wall surface.

In addition, the opening at the tip of the temperature measuring unit 12 of the housing 10 is provided with a pressing portion 9b that presses and fixes the temperature sensing element 3 to an appropriate position when the housing 10 is joined. The holding part 9b is an extension part extending in the longitudinal direction from the tip of the temperature measuring part 12 of the lower casing 10b, and a direction perpendicular to the longitudinal direction from the tip of the extension part toward the upper casing 10a. And a bent portion that is bent at the same time.

  The bent portion of the pressing portion 9b protrudes more toward the upper housing 10a than the joint surface between the lower housing 10b and the upper housing 10a, and the joint surfaces between the lower housing 10b and the upper housing 10a are connected to each other. It is provided so as to come into contact with the temperature sensitive element 3 before the contact (FIG. 11A). Further, the protruding amount of the bent portion is such that when the casing 10 is joined, the surface of the thermosensitive element 3 opposite to the surface where the bent portion contacts is pushed to a position where it contacts the inner wall surface of the cap 30. (FIG. 11B). Therefore, after the housing 10 is joined and the temperature sensing element 3 is pushed into a predetermined position by the pressing portion 9b, the temperature sensing element 3 and the cap 30 can be reliably brought into contact with each other by attaching the cap 30. (FIG. 11 (c)).

  According to such a configuration, the influence of the length of the lead wire 3a and the amount of deflection can be reduced, and the temperature sensing element 3 can be positioned at a desired fixed position, so that the temperature sensing element 3 and the cap 30 can be reliably connected. Can be contacted.

  In addition, by adopting a configuration in which the temperature sensor 3 is brought into contact with the cap 30 which is a separate member from the housing 10, the temperature measuring portion and other portions in the housing of the electronic thermometer can be configured with different materials. That is, the degree of freedom in selecting the housing material in the electronic thermometer can be increased.

  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.

1 is a plan view of an electronic thermometer according to Example 1. FIG. 1 is an exploded perspective view of an electronic thermometer according to Example 1. FIG. It is a schematic diagram of one division | segmentation housing | casing. 1 is a schematic diagram of an electronic thermometer according to Example 1. FIG. It is an enlarged view corresponding to the D section of Fig.4 (a). It is a disassembled perspective view of the electronic thermometer which concerns on the modification 1. FIG. It is a disassembled perspective view of the electronic thermometer which concerns on the modification 2. FIG. It is a disassembled perspective view of the electronic thermometer which concerns on the modification 3. FIG. It is a disassembled perspective view of the electronic thermometer which concerns on Example 2. FIG. 6 is a longitudinal sectional view of an electronic thermometer according to Example 2. FIG. It is an enlarged view corresponding to the E section of FIG. It is a typical exploded perspective view explaining the structure of the electronic thermometer which concerns on a prior art example. It is a schematic diagram of the electronic thermometer which concerns on a prior art example.

Explanation of symbols

1 Electronic thermometer 2 Internal parts 3 Temperature sensor (temperature sensor)
3a Lead wire 4 Substrate 5 LCD
6 Battery 7 Battery Terminal 8 Rib 8a Groove 9 Pressing Rib 10 Housing 10a Upper Housing 10b Lower Housing 11 Main Body 12 Temperature Sensor 13 Display Unit

Claims (13)

An internal hollow housing;
A temperature sensor disposed at the tip of one end side in the longitudinal direction of the hollow interior of the housing;
An internal component connected to the temperature sensor via a lead wire and disposed on the other longitudinal end side in the hollow interior of the housing;
In an electronic thermometer equipped with
The housing is large in that an opening for attaching the temperature sensor and the internal component inside the housing opens a region including a region from the temperature sensor arrangement region to the internal component arrangement region along the longitudinal direction. An electronic thermometer characterized by being divided so as to be formed.   The electronic thermometer according to claim 1, wherein the housing is divided by a dividing surface passing through a central axis along a longitudinal direction in a temperature measuring unit in which the temperature sensor is arranged.   The positioning means for positioning the temperature sensor at a position in contact with the inner wall surface of the casing is provided in at least one of the divided casings. Electronic thermometer as described.   The electronic thermometer according to claim 3, wherein the positioning unit holds a boundary portion of the lead wire with the temperature sensor in a state where the temperature sensor is in contact with an inner wall surface of the housing. The positioning means has a rib that protrudes from an inner wall surface of the housing and abuts on a boundary portion between the temperature sensor and the lead wire,
The electronic thermometer according to claim 3 or 4, wherein a groove in which a boundary portion of the lead wire with the temperature sensor is sandwiched is formed at a tip of the rib.   6. The apparatus according to claim 3, further comprising holding means for holding the temperature sensor positioned in the one divided casing at the positioned position when joining the divided casings. The electronic thermometer according to Crab.   The holding means is provided on the other divided housing so as to protrude in a direction opposite to the one divided housing, and the joint surfaces of the other divided housing and the one divided housing are The electronic thermometer according to claim 6, wherein the electronic thermometer is a protrusion that contacts the lead wire before contacting the lead wire. An internal hollow housing having an opening at one longitudinal end;
A temperature sensor disposed at one end in the longitudinal direction of the casing so as to be exposed to the outside of the casing from the opening;
A cap that covers the temperature sensor and closes the opening;
An internal component connected to the temperature sensor via a lead wire and disposed on the other longitudinal end side in the hollow interior of the housing;
In an electronic thermometer equipped with
The housing is sized so that an opening for attaching the temperature sensor and the internal component to the housing opens a region including the temperature sensor placement region to the internal component placement region along the longitudinal direction. Is divided to form in
An electronic thermometer comprising positioning means for positioning the temperature sensor at a position where the temperature sensor can contact the inner wall surface of the cap before the cap is attached to the housing.   9. The electronic thermometer according to claim 8, wherein the casing is divided by a dividing surface passing through a central axis along a longitudinal direction in a temperature measuring unit in which the temperature sensor is arranged. The positioning means has a rib that protrudes from an inner wall surface of the housing and abuts on a boundary portion between the temperature sensor and the lead wire,
The electronic thermometer according to claim 8 or 9, wherein a groove in which a boundary portion of the lead wire with the temperature sensor is sandwiched is formed at a tip of the rib. The positioning means includes
The other split casing is provided so as to protrude in the direction facing the one split casing, and when the split casings are joined, the one split casing is positioned in the longitudinal direction. In addition, the temperature sensor has a protruding portion that comes into contact before the joining surfaces of one divided housing and the other divided housing come into contact with each other and determines a position in a direction perpendicular to the longitudinal direction of the temperature sensor. The electronic thermometer according to any one of claims 8 to 10, wherein: The positioning means includes
The other divided housing is provided so as to protrude in the direction facing the one divided housing, and when the divided housing is joined, the one divided housing is connected to the lead wire. The electronic thermometer according to claim 11, further comprising a second projecting portion that comes into contact with each other before the joining surfaces of the first and second divided housings come into contact with each other.   The electronic thermometer according to any one of claims 1 to 12, wherein the divided casings are bonded by bonding with an adhesive or ultrasonic welding.

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