JPS585235Y2 - Shiatsukiyouben - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a valve for a finger pressure device used when measuring the engine internal pressure of a diesel engine.

In general, engine internal pressure is regularly measured using a finger pressure device while a diesel engine is in operation.

For this reason, a manually opened and closed acupressure valve is attached to the engine head cover, but this valve is normally closed.

By the way, the engine internal pressure, that is, the combustion gas pressure in the cylinder, is constantly fluctuating, and this applies an impact to the shiatsu valve, which is closed under normal operating conditions.
The valve itself is exposed to high temperatures, but conventional valves of this type use a push-open spring that resists the internal engine pressure.As a result, the elasticity of the push-open spring decreases over time, causing gas leakage. may occur.

It was originally devised in view of the above points, and the present invention will be explained below with reference to the drawings. 1 is a main body, 2 is a combustion gas introduction hole provided in this main body 1 and communicates with the cylinder of the engine, A valve seat 3 is formed at its inner end.

4 is a valve stem insertion hole that communicates with the combustion gas introduction hole 2 and is provided concentrically; 5 is a valve stem; the valve stem 5 has a valve head 6 at its inner end, a constriction 7 and a packing 9 behind it; A sliding part 8 is formed, and this is inserted from the combustion gas introduction hole 2 side, so that the valve head 6 faces the valve seat 3.

Reference numeral 10 denotes a compression spring installed between a flange ring 11 fixed to the outer end of the valve stem 5 and the inner bottom of the large diameter portion 12 of the valve stem insertion hole 4. is pressed against.

Reference numeral 13 denotes a combustion gas outlet hole formed in the main body 1 corresponding to the constricted portion 7 of the valve stem 5, and this outlet hole 13 is connected to an external acupressure device by piping.

Reference numeral 14 denotes an operating lever located outside the valve stem 5 and pivotally supported on the main body 1, and has a cam portion 15 at the base that comes into contact with the outer end surface of the valve stem 5.
is formed, and is pivotally supported by a support shaft 16 provided on a bracket protruding from the main body 1 through a shaft hole 17 having a diameter slightly larger than the diameter of the support shaft 16, with a gap 18 remaining.

When the operating lever 14 is perpendicular to the valve stem 5, the valve is closed, and when it is rotated 90 degrees and positioned in a straight line, the valve is opened.

In the figure, reference numeral 19 indicates a mounting seat for the main body 1, and reference numeral 20 indicates a piping neck portion for the combustion gas outlet hole 13.

The present invention is constructed as described above, and the closed state of the valve is maintained by the flange 11 fixed to the outer end of the valve stem 5 and the compression spring 10 installed between the main body 1, and when the engine is in use. Since the high-pressure gas pressure from the side is also applied to the valve head 6 in the direction of closing the valve, the function of the compression spring 10 does not deteriorate even after long-term use, and therefore the valve is reliably closed. The valve is held in place without causing gas leakage, and the valve is opened and closed by an operating lever 14 located outside the valve stem 5 and pivotally supported on the main body 1.
The operation lever 14 has a shaft hole 17 with a diameter slightly larger than the diameter of the support shaft 16 and a clearance 18 between the support shaft 16 provided on the main body 1 and the support shaft 16 provided on the main body 1.
Since the valve stem 5 is pivoted with the cam part 15 remaining in place, the linear movement of the valve stem 5 due to the eccentric movement of the cam part 15 is performed extremely smoothly, and the operating lever 14 is stable at a rotational position of 90 degrees, making it easy to operate. Moreover, it has various practical effects such as a simple structure and low cost.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view of the present invention. 1...Main body, 2...Combustion gas introduction hole,
3... Valve seat, 4... Valve stem insertion hole, 5...
... Valve stem, 6... Valve head, 7...
Narrow portion, 8... Sliding portion, 9... Packing, 10... Compression spring, 11... Collar ring, 12... Valve stem insertion hole large diameter part, 13...
・Combustion gas outlet hole, 14... Operation lever, 15
...Cam part, 16...Spindle, 17...
...Shaft hole, 18...Gap, 19...
...Body mounting dust, 20... Piping thread.

Claims (1)

[Scope of utility model registration request] A combustion gas introduction hole is provided in the main body, a valve seat is formed at the inner end thereof, and a valve stem insertion hole is provided in communication with the combustion gas introduction hole, and a valve head is provided at the inner end, and a constricted part and a sliding part are provided behind it. Insert the valve stem formed with the above into the insertion hole, install a compression spring between the flange fixed to the valve stem and the main body, and drill a combustion gas outlet hole in the main body corresponding to the constriction of the valve stem. A valve for an acupressure instrument, characterized in that an operating lever formed with a cam portion that contacts the outer end surface of the valve stem is pivotally supported with a gap left on a support shaft located on the outer side of the valve stem.