Temperature sensor
View Patent ↗A temperature sensor is provided that can easily make possible stuffing with the filler or burying of the temperature detector element so that faster temperature response can be achieved. A temperature sensor has a closed-bottom tubular shaped case, a temperature detector element inserted and accommodated in the case, and a filler filled in the case and sealing the temperature detector element. The temperature sensor is provided with a filler flowing portion formed in a relative gap between the case and the temperature detector element along an insertion direction of the temperature detector element and having a gap relative to the temperature detector element larger than that relative to the remainder portion of the gap.
1. A temperature sensor comprising:
a closed-bottom tubular shaped case;
a temperature detector element inserted and accommodated in the case; and
a filler filled in the case and sealing the temperature detector element,
a gap formed between the case and the temperature detector element,
the gap having a filler flowing portion formed along an insertion direction of the temperature detector element,
wherein the filler flowing portion is a larger gap than a remainder of the gap other than the filler flowing portion,
wherein the filler flowing portion is provided in an inner wall of the case so as to protrude outwardly in a radial direction,
wherein the remainder of the gap other than the filler flowing portion is smaller than the filler flowing portion.
2. The temperature sensor according to claim 1 , wherein the filler flowing portion is formed by forming an inner wall cross section of the case into a polygonal shape.
3. The temperature sensor according to claim 1 , wherein the filler is an adhesive agent containing a filler metal.
4. The temperature sensor according to claim 1 , wherein the case is provided with a base to be a package by postforming, forming an outer shape of a portion of the case that is supported by postforming mold into a cylindrical shape.
5. The temperature sensor according to claim 4 , wherein the case is divided into the portion supported by the postforming mold and a temperature conducting portion provided with the filler flowing portion.
6. The temperature sensor according to claim 1 , integrated with an on-vehicle pressure sensor.
7. The temperature sensor according to claim 1 , further comprising the gap having a first thickness and the filler flowing portion having a second thickness,
wherein the second thickness is greater than the first thickness.
8. The temperature sensor according to claim 1 , wherein the filler flowing portion allows for movement of the filler and the remainder of the gap is involved with temperature conduction between the case and the temperature detector element.