JPH0430511Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an electronic thermometer, and more particularly to the structure of an electronic thermometer that allows the inner unit to be easily and securely fixed within the main body case.

(Problems to be solved by conventional technology and ideas) An electronic thermometer is one in which the main components such as the switch operation part are integrated as a middle unit, and the middle unit is attached and assembled inside the main body case. Are known. This kind of medium unit needs to be securely fixed inside the main body case to prevent it from wobbling, but since this kind of main body case is generally elongated and cylindrical, there are uneven parts on the inner wall for locking. It is sometimes difficult to form a fixing means for this type of inner unit and the main body case, so conventional methods for fixing this type of inner unit and main body case include inserting the inner unit into the main body case and then welding or twisting the two from the outside. Generally, a method of fixing the material by

However, the work of fixing the middle unit inside the main body case by welding or twisting means is extremely troublesome, does not improve assembly efficiency and increases costs, and is also likely to cause inconvenient unevenness on the outer wall surface of the main body case, which is in close contact with the skin. There were various problems such as discomfort during use and deterioration of appearance.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an electronic thermometer in which a middle unit equipped with a switch operating section can be easily and securely assembled inside the main body case.

(Means for Solving the Problems) To this end, the present invention provides a main body case 2 having an opening 9 for protruding the push-down type switch operating section 7, and at least the switch operating section 7.
An electronic thermometer is constructed from the middle unit 3 equipped with the following. Then, the middle unit 3 is pushed in in a horizontal direction perpendicular to the direction in which the switch operating section 7 is pressed down through the insertion port 10 provided on the rear surface of the main body case 2, which is perpendicular to the upper surface where the opening 9 is formed. Then, the middle unit 3 is inserted into the main body case 2, and the peripheral edge 9a of the opening 9 of the middle unit 3 is inserted into the main body case 2.
The protrusion 1 engages with the peripheral edge 9a and extends along the side wall of the switch operation section 7 at a position corresponding to the above.
8 is installed protrudingly.

(Function) According to the above structure, the protrusion opening 9 of the switch operation part 7 formed in the main body case 2 is utilized as a means for fixing the middle unit 3, resulting in a simple structure that is advantageous in terms of molding. 3 can be easily and securely fixed to the main body case 2, and there is no need to provide locking irregularities on the outer wall surface of the main body case 2, and the usability is excellent when it is brought into close contact with the skin. This is what was done.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded view of the electronic thermometer according to the present invention, and FIGS. 2 and 3 are cross-sectional views of the assembled state. A case 2, a middle unit 3 housed inside the main case 2, and a battery cover 4 detachably attached to the rear of the main case 2.
It consists of

The main body case 2 consists of a substantially elongated base part 2a and a tapered probe part 2b integrally connected to the base part 2a, and a temperature measuring part 5 is attached to the tip of the probe part 2b. A window portion 8 and an opening portion 9 are formed on the upper surface of the base portion 2a for protruding a body temperature display portion 6 and a switch operation portion 7 comprising a hollow push-down rubber switch provided in the middle unit 3, respectively. Furthermore, a mounting opening 10 for the battery cover 4, which also serves as an insertion opening for the middle unit 3, is provided at the lower rear end. This mounting port 10 is opened on the rear surface perpendicular to the upper surface, which is the surface on which the opening 9 is formed. 29 is a set screw for the battery cover 4. Reference numeral 11 denotes a non-slip uneven part for the fingertip, which is formed at a position where it does not touch the skin during use.

The middle unit 3 is mainly composed of a substantially saddle-shaped inner case 3', which is formed by vertically extending side plates 32, 32 on both sides of a long plate-like upper plate part 31, and has a wiring board 12 inside or on the top surface thereof. The body temperature display section 6, the switch operation section 7, and other main components are arranged. 20
is a generally short cylindrical sound generator for notification, and has flexible elastic holding members 21, 21 protruding forward from both sides of the tip of the inner case 3' with the sounding surface 20a facing downward. It is held by

These holding members 21, 21 are attached to the middle unit 3.
When inserting into the main body case 2 in the direction of arrow a (see FIG. 4) by pushing it through the insertion opening 10 in a horizontal direction perpendicular to the pressing downward direction of the switch operation part 7, the side inner wall surface 2a of the main body case 2 , 2b, is bent inward and pressed against the wall surface of the sound generator 20,
Hold the sound generator 20 firmly.

Reference numerals 13 and 13 are two connecting wires that connect the temperature measuring section 5 and the wiring board 12, and 24 is a lead wire that is connected to the upper surface of the sound generator 20 by soldering or the like.
A plurality of sound emitting holes 25 are formed on the lower surface of the main body case 2, and the sound emitting surface 20a of the sound generator 20 faces the sound emitting holes 25.

14, 15, 16, 17 are both side plate parts 32, 32
A notch is formed in the leg part 17 at the rearmost part.
protrudes slightly below the other legs 14-16. Reference numerals 23 and 23 are ribs protruding from both sides of the main body case 2, and the legs 14 to 17 are assembled by sliding on the upper surfaces of the ribs 23 and 23, as will be described later. Reference numeral 18 denotes a protrusion protruding along the side wall of the switch operation part 7 at a position corresponding to the opening peripheral edge 9a around the switch operation part 7. It engages with the peripheral portion 9a. 19 is a power supply battery, and 22, 22 are terminal boards.

When assembling this electronic thermometer 1, the sound generator 20 is temporarily held by the holding members 21, 21, and then the middle unit 3 is inserted through the insertion opening 10 and inserted into the upper wall surface of the middle case 3' through the opening of the main case 2. It is brought into sliding contact with the inner wall surface on which the portion 9 is formed, and is forcibly pushed into the main body case 2 while slightly elastically deforming the main unit case 2 by the protrusion 18 formed on the middle unit 3'.

Then, the protrusion 18 is fitted and engaged with the peripheral edge 9a of the opening 9, and the main body case 2 is elastically returned to its original state. is firmly held by the holding members 21, 21 as described above and is fixed at a position facing the sound emitting hole 25.

Furthermore, when inserting the middle unit 3' into the main body case 2, the lower end surfaces of the legs 14 to 17 have ribs 23,
23, and as a result, the middle unit 3' is pushed up slightly and the protrusion 1 on the top surface of the middle unit 3' is pushed up slightly.
8 is elastically fitted into the opening 9, and a resonance space T is secured between the sound generating surface 20a of the sound generator 20 and the main body case 2. At that time, each leg 14-1
7 is notched and has elasticity,
It is easy to insert the middle unit 3' into the main body case 2.
Further, since the main case 2 has an opening 9, the main case 2 is easily elastically deformed, and the inner case 3' can be slidably inserted into the main case 2 without difficulty.

Also, the leg portions 14, 1 at the frontmost portion with respect to the insertion direction a.
Tapered surfaces 14 are provided at the lower front surfaces of the legs 17, 17 at the final portions 4 and 4, and at the rear end surfaces of the ribs 23, 23.
a, 17a, and 23a (see the partially enlarged view in FIG. 2). Therefore, when inserting the inner case 3' into the main case 2, the tapered surface 14a of the leg portion 14 first aligns with the rib 23. Tapered surface 23 of
a, and finally the tapered surface 17a of the leg 17
has a structure in which it comes into contact with the tapered surface 23a and pushes the middle case 3' upward, making it easy to forcibly insert the middle case 3' into the main case 2.
In addition, the protrusion 18 can be reliably fitted into the opening 9 by pushing the inner case 3' upward, and a sufficient resonance space T for the sound generator 20 can be secured.

The protrusion 18 of the middle unit 3 assembled into the main body case 2 in this manner engages with the peripheral edge 9a of the opening 9, so that the middle unit 3 can be inserted into the main body case 2 without wobbling in the front, back, left, and right directions. It is firmly fixed. Note that if the peripheral edge 9a of the opening 9 is formed to be sharp as in this embodiment, the protrusion 18 can be more securely locked.

In this way, the present electronic thermometer 1 has an opening 9 for protruding the switch operation part 7 from the middle unit 3.
The structure of the fixing means can be simplified, and the middle unit 3 can be used as a fixing means.
can be firmly fixed inside the main body case 2. Furthermore, there is no need to divide the main body case 2 into an upper case and a lower case, and it can be integrally molded into a long and slender cylinder, so the number of parts can be reduced and assembly can be simplified. Further, since the switch operating portion 7 is positioned by engaging the protrusion 18 with the opening 9, the switch operating portion 7 can be reliably positioned at the center of the opening 9 (see especially FIG. 4).

(Effects of the invention) As explained above, according to the invention, the middle unit 3 can be easily and securely fixed to the main body case 2, and in particular, the opening 9 for protruding the switch operation part 7 can be fixed easily and firmly. By utilizing this as a fixing means for the middle unit 3, it is possible to reduce the number of parts and simplify the structural assembly. In addition, the main body case 2 can be integrally molded into an elongated cylindrical shape without being divided into upper and lower cases, making it easy to mold and assemble, reducing the number of parts.Moreover, it is possible to form uneven parts on the outer surface for fixing the middle unit 3. Since it is unnecessary, it can be used in close contact with the skin without causing discomfort, and it can be used with an excellent feeling of use.Furthermore, it can prevent the switch operation part 7 from shifting or rattling, and in the case of a rubber switch. This has various effects such as preventing unnecessary buckling.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is an exploded perspective view of the electronic thermometer, FIGS. 2 and 3 are cross-sectional views in an assembled state, and FIG. 4 is a plan view. 1...Electronic thermometer, 2...Main case, 3...
Middle unit, 7... Switch operation section, 9... Opening, 9a... Periphery, 10... Insertion port, 18...
Protrusion.

Claims (1)

[Scope of utility model registration request] A main body case 2 having an opening 9 for protruding the push-down switch operating section 7, and a middle unit 3 equipped with at least the switch operating section 7.
The middle unit 3 is inserted horizontally orthogonally to the direction in which the switch operation section 7 is pressed down through an insertion opening 10 provided on the rear surface of the main body case 2, which is perpendicular to the top surface on which the opening 9 is formed. The electronic thermometer 1 is configured to be inserted into the main body case 2 by being pushed in the direction, and is engaged with the peripheral edge 9a of the opening 9 of the middle unit 3 at a position corresponding to the peripheral edge 9a. , and an electronic thermometer characterized in that a protrusion 18 is provided protrudingly along the side wall of the switch operating section 7.