Pressure detection device
AssigneesCitizen Finedevice Co., Ltd., Citizen Watch Co., Ltd.
InventorsYujiro NAKAMURA, Kazuo TAKAHASHI, Motoki OBATA, Hiroshi NAKAGAWA
Life of this patent
Estimating the term…
Abstract
A pressure detection device 1 includes: an enclosure assembly configured to be mounted in a communication hole in an internal combustion engine; a diaphragm head 32 provided at one end of the enclosure assembly and configured to receive pressure of combustion gas from the internal combustion engine; and a buffer member 80 located at the diaphragm head 32 and configured to supply the combustion gas to the diaphragm head 32 while reducing the temperature of the combustion gas. Female threads formed on a first buffer member 81 of the buffer member 80 and male threads formed on a second buffer member 82 of the buffer member 80 are configured to threadably engage each other.
Claims13
A pressure detection device comprising:
- a body configured to be mounted in a hole in an internal combustion engine;
- a pressure receiving member provided at one end of the body and configured to receive pressure of a fluid from the internal combustion engine;
- and
- a temperature reducing member located at the pressure receiving member on a leading end at the one end of the body and configured to supply the fluid to the pressure receiving member while reducing temperature of the fluid, wherein
- the pressure receiving member comprises:
- a pressure receiving portion configured to be displaced under pressure;
- and
- a pressure receiving support portion joined to or integrated with a first member, the first member being joined to or integrated with the pressure receiving member and having an inner circumferential surface,
- the temperature reducing member comprises:
- the first member;
- and
- a second member having an outer circumferential surface facing the inner circumferential surface, wherein
- female threads formed on the inner circumferential surface of the first member and male threads formed on the outer circumferential surface of the second member are configured to threadably engage each other.
Dependencies are inferred from the claim text.