Pressure detection device with detachable temperature reducing buffer member

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,
• 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, and
• the second member comprises at least one straight groove on a leading end surface thereof.

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,
• 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, and
• the second member is configured to be separated into a plurality of sub-members and assembled from the plurality of separated sub-members.