Abstract:
PROBLEM TO BE SOLVED: To provide a mounting structure of an optical fiber, which stably fixes the optical fiber for a long term and has a high degree of freedom of selection of the coating of the optical fiber. SOLUTION: A first preform glass 24A and a second preform glass 24B are inserted in the optical fiber 14 and housed in a through-hole 23. The second preform glass 24B is placed on the lower side and the axis direction of the through-hole 23 is directed substantially vertical, the inserted part 21 is heated with a heater H to melt the first preform glass 24A. Thereafter, the inserted part 21 is cooled and hardened to fasten the optical fiber 14 in a hermetic seal state. Thus, a high fixing strength is kept for a long term. The fixing is performed by using a low melting point glass 24, the coating of the optical fiber 14 has the high flexibility of selection among polyimide resin, ultraviolet setting type resin and metal. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a pressure sensor capable of suppressing deformation of its joint flange and increasing the accuracy of positioning its case flange. SOLUTION: In the pressure sensor, a thick portion 15 of a joint flange 14 is formed on the end edge of a screw hole so that it protrudes closer to the circuit portion 30 than to the thin portion 14A. Accordingly, an inconvenience is prevented that the joint flange 14 deforms, when a joint 10 is connected to a pipe 1B. The height of the pressure sensor 1A is smaller, since the thin portion 14A is provided on the joint flange 14. This can reduce the size of the pressure sensor. Additionally, the positioning accuracy of the thick portion 15 is increased, since the positioning surface 15A of the thick portion 15 can position the case flange 42, without reducing the radial dimensions. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an on-vehicle pressure sensor capable of improving the assembling efficiency of the contact probe by improving reliability of connection of a contact probe and preventing the contact resistance of the contact probe from increasing. SOLUTION: The on-vehicle pressure sensor 1 includes a detection part 10 for measuring hydraulic pressure in a liquid passage, a sensor housing 20 for housing the detection part 10, and the contact probe 30, electrically connected to the detection part 10 and an electronic control unit 300 (control part), the contact probe 30 has an outer cylinder 31, a coil spring 32 (elastic member) housed in the outer cylinder 31, and a rod 33 inserted in the outer cylinder 31. The outer cylinder 31 is brought into contact with the detection part 10, while being fixed on the sensor housing 20, and the rod 33 is pushed on the electronic control unit 300 by pressuring the coil spring 32. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
A pressure sensor module 2, wherein a holding space 34 is formed between a diaphragm 22 and a thin film layer 31, and a vent hole 321 communicating with the exterior of a first case is provided in the holding space 34. In the above pressure sensor module, even when a corrosive gas or chemical solution is used as a fluid to be measured and a corrosive gas component originated from the fluid to be measured permeates into the holding space 34, the permeated corrosive gas component can be discharged to the outside of the case through the vent hole 321. As a result, the corrosion of the diaphragm 22 by the fluid to be measured can be prevented, which results in the achievement of a prolonged service life of the pressure sensor module 2.