JPH0345156Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a mounting structure for a thermometer used in an undersea observation system that transmits various observation data to land via an undersea cable.

Conventional technology Examples of conventional implementation of this type of thermometer are shown in Figures 2 and 3.
As shown in the figure.

In FIG. 2, the temperature sensing section 2 is attached to an end plate 3 fixed to the pressure cylinder 1. As shown in FIG. An electronic circuit section 4 for multiple modulating and amplifying seismometer signals, tsunami meter signals, etc. is housed within the pressure-resistant cylinder 1, and is connected to it by a cable 5 passing through the end plates 3, 3'.

FIG. 3 is a sectional view showing a method of attaching the temperature sensing section 2 to the end plate 3, in which a crystal oscillator 201 as a temperature sensor is fixed to a printed board 202 together with a block 203, forming the temperature sensing section 2. . The temperature sensing portion 2 is fixed to the end plate 3 via an insulating sheet 6 with studs 7 and screws 8. In order to transfer the heat on the surface of the end plate 3 to the crystal oscillator 201 through the insulating sheet 6 and the block 203, the block 203 is usually made of metal with good thermal conductivity. Also, metal is used for the studs 7 and screws 8 to ensure secure fixation.

Problems to be Solved by the Invention In the conventional mounting method described above, the heat generated during the operation of the electronic circuit section 4 is conducted to the crystal oscillator 201, and the end plate 3, stud 7, and screw 8 are conductive. Therefore, the insulation between the printed board 202 and the end plate 3 is not good. Furthermore, if the effective length for support of the stud 7 is larger than the height of the block 203, the end plate 3 of the block 203 will be in a non-contact state, resulting in poor heat conduction, and the effective length for support of the stud 7 will be larger than the height of the block 203. If it is smaller than
Since the printed board 202 is deformed by tightening the screws 8, there is a drawback that the effective supporting length of the stud 7 and the height of the block 203 must be matched with high precision.

Means for Solving the Problems The present invention was made to eliminate the above-mentioned drawbacks, and consists of one end plate 3 of the cylindrical pressure vessel 1 and a printed board 203 on which the crystal oscillator 201 is mounted. Insulating plate 6 and block 203
In the mounting structure in which the temperature-sensing section 2 is mounted on the end plate 3 via the
An insulating sleeve 9 is inserted into this hole, an insulating cover 11 is provided to cover the temperature sensing section 2, and an insulating spacer 1 is provided between the insulating cover 11 and the printed board 202.
0, and a mounting screw 12 passing through the spacer 10 and the insulating sleeve 9 connects the temperature sensing portion 2.
A structure is adopted in which the screws are screwed to the end plate 3.

Function Since the present invention has the above-described structure, the insulating cover 11 prevents the heat generated in the electronic circuit section 4 from having a thermal effect on the crystal oscillator, and the end plate 3
The temperature of the insulating plate 6 and block 203 is the same as before.
The signal was well transmitted to the crystal oscillator through the insulating sleeve 9 and the insulating spacer 10, and was electrically well insulated by the insulating sleeve 9 and the insulating spacer 10.

Embodiments Next, embodiments of the present invention will be described with reference to the surface.

FIG. 1 shows a cross-sectional view of an embodiment of the invention. In the figure, the mounting position of the temperature sensing part within the pressure vessel is the same as in FIG. 2. An insulating sleeve 9 is attached to the printed board 202 and block 203 of the temperature sensing section 2.
A hole is provided through which the insulating sleeve 9 passes.
An insulating spacer 10 is fitted to one end of the thermosensing section 2, and an insulating cover 11 covers the temperature-sensing section 2, and it is fixed to the end plate 3 with screws 12 via an insulating sheet 6. By using the insulating cover 11, the influence of heat from the circuit section 4 can be extremely reduced, and by using the insulating sleeve 9 and the insulating spacer 10, the insulation between the printed board 202 and the end plate 3 can be improved. Further, since the block 203 is provided with a hole and is fixed integrally with the printed board 202, contact with the end plate 3 is ensured and the printed board 202 is not deformed.

Effects of the Invention As explained above, the thermometer mounting structure according to the present invention has a simple structure, allows the thermometer to be securely fixed, and has the advantage of enabling highly accurate water temperature measurement.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of an embodiment of the thermometer mounting structure according to the present invention, Fig. 2 is a cross-sectional view showing the mounting position of the thermometer in the pressure container in the conventional example and the example of the present invention, and Fig. 3 is a cross-sectional view of the thermometer mounting structure according to the present invention. FIG. 3 is a cross-sectional view of an example of a meter mounting structure. 1...Pressure cylinder, 2...Temperature sensing part, 3, 3'
... End plate, 4 ... Circuit section, 5 ... Cable, 6
... Insulation sheet, 7 ... Metal stud, 8 ... Screw, 9 ... Insulation sleeve, 10 ... Insulation spacer, 11 ... Insulation cover, 12 ... Screw, 201
...Crystal oscillator, 202...Printed board, 203
...Brock.

Claims (1)

[Claims for Utility Model Registration] Built-in electronic circuit section 4, with first and second circuits at both ends.
of a cylindrical pressure vessel 1 having end plates 3, 3';
A crystal oscillator 201, a block 203 covering the crystal oscillator, and a printed board 202 on which the crystal oscillator and the block are mounted on the first surface thereof are mounted on either of the first and second end plates. In the thermometer mounting structure in which the thermosensor 2 is mounted via an insulating sheet 6, a plurality of first mounting holes provided in the thermosensor 2 are inserted into the first mounting holes. an insulating sleeve 9 having a substantially cylindrical shape; a second mounting hole at a position corresponding to the first mounting hole; the electronic circuit section 4 covers the temperature sensing section 2; Insulating cover 11 that blocks the heat
and, provided on a second surface of the printed board 202 that is the back surface of the first surface, the second surface and the inner surface of the insulating cover perpendicular to the first mounting hole. an insulating spacer 10 providing a space therebetween, and a screw 12 passing through the second mounting hole and the insulating sleeve connects the temperature sensing section 2 to the insulating part via the insulating cover 11 and the insulating spacer 10. A thermometer mounting structure characterized by being pressed against and fixed to a sheet 6.