JP5274624B2 - Temperature sensor and sensor mounting terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately measure the temperature by preventing a terminal of a temperature sensor from being bent. <P>SOLUTION: A temperature sensor comprises a terminal 11 including a sensor body mounting part 13 (mounting part) in which a sensor body 18 is mounted, a fixed part 12 which is fixed in a temperature measuring spot via a screw 21, and a neck part (connecting part) which connects the sensor body mounting part 13 and the fixed part 12. The fixed part 12 includes a projection 16 (first projection), and the neck part 14 includes a projection 17 (second projection). By fastening the screw 21 via the projection 16 and the projection 17, the fixed part 12 is fixed in the temperature measuring spot. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a temperature sensor and a sensor mounting terminal, and more particularly to a temperature sensor and a sensor mounting terminal capable of improving the mounting strength of a sensor body.

A temperature sensor represented by a thermistor that is a temperature-sensitive semiconductor element is used in various applications and fields.
For example, as shown in FIG. 4, the temperature sensor includes a sensor body 1, a sensor attachment terminal 2 (hereinafter simply referred to as a terminal) to which the sensor body 1 is attached, and a lead wire 3 extending from the sensor body 1. The thermistor is configured as a thermistor and has a characteristic that the resistance value changes with temperature. Specifically, this type of temperature sensor is incorporated in a heater temperature control system of , for example, an IH (Induction Heating) cooking heater and used as a means for detecting the surface temperature of a heat sink or the like .

For example, as shown in FIG. 5, the above-described temperature sensor is fixed by tightening a screw 5 through a screw mounting hole 4 of a terminal 2 at a temperature measurement location in an apparatus or the like.
Here, depending on the wiring condition of the lead wire 3 of the temperature sensor, the lead wire 3 may be pulled up together with the terminal 2 to which the sensor body 1 is attached.
In such a case, bending stress is applied to the neck 6 of the terminal 2, so that bending occurs, and the terminal 2 to which the sensor body 1 is attached is brought up from the temperature measurement location.
As a result, there has been a problem that accurate temperature measurement cannot be performed quickly even if temperature measurement at the temperature measurement location cannot be performed accurately.

  The present invention has been made in view of the above circumstances, and provides a temperature sensor and a sensor mounting terminal that can perform accurate temperature measurement by preventing bending and improving mounting strength. It is an object.

  In order to solve the above problems, a first configuration of the present invention relates to a temperature sensor that measures temperature, a mounting portion to which a sensor main body is mounted, and a fixing portion that is fixed to a temperature measurement location via a screw. And a terminal having a connecting portion for connecting the mounting portion and the fixing portion, and providing the fixing portion with a first protrusion, and providing the connecting portion with a second protrusion for preventing bending, The fixing portion is fixed to the temperature measurement location by tightening the screw via the first protrusion and the second protrusion.

  The second configuration of the present invention relates to a temperature sensor for measuring temperature, and has a mounting portion to which the sensor main body is mounted, a screw mounting hole in the center, and is fixed to the temperature measurement location via a screw. And a terminal having a connecting portion that integrally connects the mounting portion and the fixing portion, and a plurality of first protrusions are provided around the screw mounting hole of the fixing portion, and A second protrusion for preventing bending is provided at the connecting portion, and the fixing portion is fixed to the temperature measurement location by tightening the screw via the first protrusion and the second protrusion. It is characterized by.

  According to the configuration of the present invention, the first protrusion is provided in the fixing part of the terminal of the temperature sensor, and the second protrusion is provided in the connecting part, so that the tightening force of the screw and the strength of the connecting part are improved. Therefore, even when a force such as pulling up is applied to the terminal, the connecting portion can be prevented from bending. As a result, since the terminal of the temperature sensor can be reliably brought into contact with the temperature measurement location, accurate temperature measurement at the temperature measurement location can be performed.

It is a figure which shows the structure of the terminal of the temperature sensor which is embodiment of this invention, (a) is a side view, (b) is a front view. It is a side view which shows the state which attached the temperature sensor to the terminal and fixed the terminal with the screw. It is a general view which shows the state which attached the temperature sensor to the terminal and attached the connector to the lead wire of the temperature sensor. It is a front view which shows the state which mounted | wore the terminal with the temperature sensor which is a prior art example. It is a side view which shows the state in which the terminal of the temperature sensor which is a prior art example was bent.

Embodiments of the present invention will be described below with reference to the drawings.
1A and 1B are diagrams showing a configuration of a temperature sensor terminal according to an embodiment of the present invention, in which FIG. 1A is a side view and FIG. 1B is a front view. FIG. 2 is a side view showing a state in which the temperature sensor is attached to the terminal and the terminal is fixed with screws. FIG. 3 is an overall view showing a state in which the temperature sensor is attached to the terminal and the connector is attached to the lead wire of the temperature sensor.
The terminal 11 of the temperature sensor of this embodiment is generally called a lug terminal type. As shown in FIGS. 1A and 1B, the annular fixing portion 12 and the cross-sectional shape are rectangular. The sensor main body mounting portion 13 is composed of a fixed portion 12 and a neck portion 14 that integrally connects the sensor main body mounting portion 13. In the center of the fixing part 12 of the terminal 11 of the temperature sensor, a screw attachment hole 15 is formed through which a screw for attaching the fixing part 12 to the temperature measurement location is passed.

A plurality (three in this embodiment) of hemispherical protrusions (bosses) 16 are formed at equal intervals in the circumferential direction around the screw mounting hole 15 formed in the fixing portion 12 of the terminal 11. The neck portion 14 of the terminal 11 is formed with an anti-bending protrusion (rib) 17 having an oval cross-sectional shape. Here, the protrusions (ribs) 17 are provided at equal positions in the circumferential direction around the screw attachment holes 15 together with the protrusions (bosses) 16 at the positions facing the screw attachment holes 15 in the neck portion 14. .
Further, the three protrusions (bosses) 16 formed around the screw mounting holes 15 and the bending prevention protrusions (ribs) 17 formed on the neck 14 are as shown in FIG. The terminal 11 has the same height from the bottom.

As described above, the temperature sensor is used in various applications and fields.
The temperature sensor of this embodiment is configured as a thermistor that measures the surface temperature of the heat sink of an IH cooking heater, for example, as shown in FIGS. The temperature sensor includes a sensor main body 18, a terminal 11 to which the sensor main body 18 is mounted, a lead wire 19 extending from the sensor main body 18, and a connector 20 connected to an end portion of the lead wire 19. As described above, the terminal 11 includes the fixed portion 12, the sensor main body mounting portion 13, and the neck portion 14.

Next, with reference to FIG. 2 and FIG. 3, the case where the temperature sensor of this embodiment is installed and used in the temperature measurement location inside an apparatus is demonstrated.
The fixing part 12 of the terminal 11 of the temperature sensor is placed on the surface of the heat sink inside the IH cooking heater, the screw 21 is passed through the screw mounting hole 15 of the fixing part 12, and the terminal mounting hole (illustrated) provided at the temperature measurement location It is fixed by inserting and tightening. Here, the bottom surfaces of the fixing portion 12, the sensor main body mounting portion 13, and the neck portion 14 of the terminal 11 of the temperature sensor serve as a heat-sensitive surface for the temperature measurement location inside the device.

  As shown in FIG. 2, the screw 21 is formed on the upper surface of the three protrusions (bosses) 16 formed around the screw mounting hole 15 of the fixing part 12 of the terminal 11 of the temperature sensor and the neck part 14. It is configured to be placed on the upper surface of the protrusion (rib) 17. When the screw 21 is tightened in this state, the fixing portion 12 of the terminal 11 of the temperature sensor is fixed to the temperature measurement location inside the device.

  Here, the tightening force of the screw 21 applied at the time of tightening is almost evenly distributed to the three protrusions (bosses) 16 of the fixing part 12 of the terminal 11 and the protrusions (ribs) 17 of the neck part 14. Is done. Further, the neck portion 14 that integrally connects the fixing portion 12 and the sensor main body mounting portion 13 is reinforced by a protruding portion (rib) 17.

According to the conventional configuration, when the lead wire 19 of the temperature sensor is wired, for example, when a pulling force is applied, the bending stress is concentrated on the neck portion of the temperature sensor, so that bending often occurs.
However, according to this embodiment, since the plurality of protrusions (bosses) 16 are formed on the fixing part 12 of the terminal 11 of the temperature sensor and the protrusions (ribs) 17 are formed on the neck part 14, the screw 21. The tightening force can be improved, and the strength of the neck portion 14 can be improved. Thereby, even when force, such as pulling up the lead wire 19 of the temperature sensor, is applied to the terminal 11, it is possible to reliably prevent the neck portion 14 from being bent.
As a result, since the entire terminal 11 of the temperature sensor can be reliably brought into contact with the temperature measurement location inside the apparatus, accurate temperature measurement at the temperature measurement location can be performed. Furthermore, by preventing the neck portion 14 of the terminal 11 from being bent, it is possible to improve the durability and reliability of the entire temperature sensor including the terminal 11.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. Are also included in the present invention.
For example, in the above-described embodiment, the three protrusions (bosses) 16 are formed on the fixing portion 12 of the terminal 11 of the temperature sensor. However, the present invention is not limited to this, and can be increased or decreased as necessary. Of course.
The shape of the protrusion 16 is not limited to the boss shape as long as it is in the circumferential direction of the screw mounting hole 15 of the fixing portion 12 of the terminal 11 of the temperature sensor, and may be a rib shape.

The temperature sensor of the present invention is not limited to a temperature sensor that detects the temperature inside the equipment of the IH cooking heater (for example, a heat sink ) as in the above-described embodiment. It can be applied to various fields such as for hot water supply equipment, heating equipment, home appliances, and industrial equipment.

11 Sensor mounting terminal 12 Fixed part 13 Sensor body mounting part (mounting part)
14 Neck (connecting part)
15 Screw mounting hole 16 Projection (first projection)
17 Projection (second projection)
18 Sensor body 19 Lead wire 20 Connector 21 Screw

Claims (6)

A temperature sensor for measuring temperature,
A terminal having a mounting part to which the sensor body is mounted, a fixing part fixed to the temperature measurement location via a screw, and a connecting part for connecting the mounting part and the fixing part;
A first protrusion is provided on the fixed part, and a second protrusion for preventing bending is provided on the connecting part.
A temperature sensor, wherein the fixing portion is fixed to the temperature measurement location by tightening the screw via the first protrusion and the second protrusion. A temperature sensor for measuring temperature,
A mounting portion to which the sensor main body is mounted; a fixing portion having a screw mounting hole in the center and fixed to the temperature measurement location via a screw; and a connecting portion for integrally connecting the mounting portion and the fixing portion. A terminal having
A plurality of first protrusions are provided around the screw mounting hole of the fixing part, and a second protrusion for preventing bending is provided in the connection part,
A temperature sensor, wherein the fixing portion is fixed to the temperature measurement location by tightening the screw via the first protrusion and the second protrusion. The first protrusions are provided at equal intervals in the circumferential direction around the screw mounting hole of the fixing part,
The second projecting portion is provided at a position facing the screw mounting hole in the connecting portion so as to be equidistant in the circumferential direction around the screw mounting hole together with the first projecting portion. The temperature sensor according to claim 1 or 2.   4. The temperature sensor according to claim 1, wherein the first protrusion and the second protrusion are configured to be positioned at the same height with respect to a bottom surface of the terminal. .   5. The temperature sensor according to claim 1, wherein the first protrusion has a boss structure, and the second protrusion has a rib structure. 6.   A sensor mounting terminal used as the terminal constituting the temperature sensor according to claim 1.

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