JPH045440Y2 - - Google Patents

Description

[Detailed description of the invention] ``Purpose of the invention'' The present invention relates to the invention of an exhaust valve that effectively prevents dust from entering and adhering to the dust seal part, and which constantly prevents dust from entering and adhering to the outside under reasonably high water pressure conditions. The purpose of the present invention is to provide an exhaust valve that can prevent water from entering, maintain an accurate exhaust function over a long period of time, and that does not get caught on other objects.

Industrial Application Valves for exhausting air in diving suits and other diving equipment or equipment.

PRIOR ART The use of exhaust valves in diving suits and other diving gear and equipment is important for adjusting diving speed and for improving workability and behavior underwater, and thus, such exhaust valves have been used in the past. There is.

Problems to be solved by the invention However, in the conventional exhaust valve as described above, an exhaust passage is formed in the axial direction of the valve body, and a valve seat and a valve body are arranged in this axial exhaust passage. Because of this, it becomes a mechanism with a considerable axial length, and when adopted in the diving suit, it protrudes considerably from the clothing and is unsightly, and in some cases, it may interfere with the wearing of the diving suit itself. It turns out.

During the exhaust, the valve body will slide to release it from the valve seat, but when applying such a sliding operation to the valve body, the packing part such as an O-ring used in the sliding part may be exposed to water in the water. There is a high possibility that dust will enter and adhere to the packing contact area due to the sliding action, and the adhered dust will impede the packing performance of O-rings, etc., making it impossible to obtain stable operation. have.

``Structure of the invention'' Means for solving the problem A base member is fixed to the fabric or other partition member from the outside, and the base member is guided in the axial direction by a guide tube formed on the base member. An operation button is provided for raising and lowering the body for ventilation, a valve body is provided on a slide table fastened to the operation button, and a valve case is attached to the base body to expose the operation button. ,
Seats are provided in multiple stages on the circumferential side of the slide table, and a first valve body and a second valve body are superimposed and attached to the seats, and the operation is performed between the slide table and the base body. A spring for restoring the button is interposed, and a flexible dust seal film is provided between the base body and the slide table, with thick fastening parts at the inner and outer ends and a thinner part in the middle. exhaust valve.

Function: When the operation button is pressed, the slide table, first valve body, and second valve body are pushed down and separated from the press-contact edge of the valve case, allowing air to be exhausted from the inside of the partition member under conditions of high internal pressure of fabric or other partition members. be able to.

The dust seal membrane is fixedly attached to the slide table and the base body at the thick parts of the inner and outer ends, and the thin flexible part in the middle allows the slide table to move up and down sufficiently. Always ensure watertightness between the slide table and the slide table.

The circumferential side of the first valve body is pressed against the first seat of the slide table by the pressure contact edge of the valve case to form an effective sealing state, and the second valve body is pressed against the first seat of the slide table by the pressure contact edge of the valve case. It acts like a check valve, that is, it only allows exhaust air and prevents pressurized water from entering from outside.

By interposing a spring between the base body and the slide table, the first and second valve bodies are attached between the operation button and the slide table, and the operation button is made thin so that it can be removed from the valve case. To greatly reduce the protrusion, reduce the amount of protrusion of the operation button from the valve case, and avoid getting caught on other objects.

Embodiment A specific embodiment of the present invention as described above is illustrated in the attached drawings. The exhaust valve according to the present invention includes a base body 1 and a base body 1 as shown in FIGS. 1 and 2. a valve case 2 that is fitted on its peripheral side; an exhaust operation button 4 located at the center of the valve case 2 and provided at the center of the base body 1; and an exhaust operation button 4. A slide table 3 attached to the shaft portion 41 of the slide table 3, a flat plate-shaped first valve body 8 and a second valve body 9 attached to the slide table 3, and a partition made of fabric or other material to the bottom surface of the base body 1. It is constituted by a fastening nut 6 that is screwed and fastened via a member 10, and a dust seal membrane 5 is incorporated between the base body 1 and the slide table 3.

However, the base body 1 has a guide tube 11 formed in its center, and has an exhaust operation button 4 as described above.
It receives the tip of a shaft portion 41 protruding from the center thereof and guides the axial sliding action of the operation button 4, and the outer circumferential portion of the valve case 2 is fitted into and removed from the outer surface thereof. A fitting ring 12 and an outer end 51 of the dust seal membrane 5 inside the fitting ring 12.
Auxiliary protrusion 1 for forming groove 13 for receiving
4 is formed, and a spring receiver 15 is arranged on the outside of the guide tube 11 in a radial direction. Further, the base body 1 has a spring receiver 1 as described above in the center part.
5 is formed, and a threaded tube 17 as shown in FIG.
are screwed together, and a partition member 10 of fabric or other material is attached to the joint surface between the bottom surface of the base body 1 and the fastening nut 6.
Engagement protrusions 18, 18a and engagement protrusions 68, 68a for engaging and tightening are provided concentrically.
As described above, the valve case 2 has a fitting groove 22 formed on the circumferential side that fits with the fitting ring 12, and a receiving hole 21 for the operation button 4 in the center, and a fitting groove 22 that fits into the fitting ring 12. There is an exhaust port 2 between the groove 22 and the groove 22.
3 are arranged as shown in FIG. 3, and a pressure contact edge 24 is provided inside the group of exhaust ports 23 to press the circumferential portion of the first valve body 8 against the circumferential side of the slide table 3. It is formed into a ring shape. A locking groove 25 is provided on the outside of the fitting groove 22 described above, which engages with the annular protrusion 12a formed on the inside of the fitting ring 12 of the base body 1.

The slide table 3 has a first seat 31 on its circumferential side that receives the circumferential portion of the first valve body 8 as described above, and a circumference of the second valve body 9 inside the first seat 31. A second catch seat 32 is formed on the top surface to receive the side in a loose state, and a ventilation hole 33 is provided inside the second catch seat 32. An engaging tube 34 that is threadedly engaged with a male thread 42 formed on the base end side is integrally formed, and an inner end portion 52 of the dust seal membrane 5 is further provided on the circumferential side of the lower surface of the first seat 31. A groove portion 35 for receiving and holding is formed toward the side surface, and the dust seal membrane 5 is formed as a thin flexible membrane between the inner and outer ends 51 and 52, and such a flexible membrane portion 53 is formed. As shown in FIG. 1, it is attached between grooves 13 and 35 in a bent state. A fixing nut 36 is screwed into the male threaded portion 42 and the engaging tube 34 to fix the slide table 3 to the operation button 4.

The fastening nut 6 has a female thread 61 formed on the inside to be threadedly engaged with the threaded tube 17 protruding from the bottom surface of the base body 1, and the engaging thread 6 formed on the circumferential side.
A ventilation hole 64 is provided between the fastening seat 63 having the holes 8 and 68a.
are arranged as shown in FIGS. 4 and 5. A spring 7 is interposed between the above-mentioned spring receiver 15 and the slide table 3, and always urges the slide table 3 and the operation button 4 outward.

That is, due to the pushing action of the spring 7, the slide table 3 presses the peripheral side of the first valve body 8 with the pressure contact edge 24 of the valve case 2 with its seat 31, and together with the dust seal membrane 5, the slide table 3 constantly presses the base member. However, in such a sealed state, when the operation button 4 is pressed from the outside, the slide disk 3 is pushed down against the action of the spring 7, so the first valve body 8 The pressure seal between the circumferential side and the pressure contact edge 24 is opened. In this way, the first valve body 8
When the seal is released, the air pressure inside the fabric or other partition member 10 is reduced to
If this internal pressure is higher than the external pressure, the valve elements 8 and 9 are pushed open and the air is discharged from the exhaust hole 23 of the valve case 2 to the outside. is exhausted. The second valve body 9 acts like a check valve, and the first valve body 8 is the same under the condition that the pressure by the pressure contact edge 24 is released as described above, and under the condition of high external pressure, the first valve body 8 acts like a check valve. 1 catch 3
1, so when used in a diving suit, water will not enter the valve due to external water pressure.

Dust sludge and other solids in the external water are always accurately blocked by the dust seal membrane 5, and those adhering close to the circumferential side of the first valve body 8 are appropriately removed during the above-mentioned evacuation when the internal pressure is high.
In particular, since the second valve body 9 is located further inside and acts as a check valve, dust and the like will not enter at least to this second valve body 9 portion, ensuring effective prevention of water intrusion.

"Effect of the invention" According to the invention as explained above, a flat plate-shaped first valve body 8 and a second valve body 9 are superimposed and used on the slide table 3 fastened to the operation button 4,
Due to the restoring action of the spring 7 for applying a push-back force to the operation button 4, the peripheral side of the first valve body 8 is pressure-sealed to the pressure contact edge 24 of the valve case 2, and the second valve body 9 is moved to the slide table 3. catch seat 3
2 to function as a check valve, it forms an accurate sealing relationship even under considerable water pressure conditions underwater, and effectively prevents interference with the valve bodies 8 and 9 due to dust in the water. In order to avoid this, and despite the sliding action of the slide table, a flexible dust seal film 5 is used between the slide table 3 and the base body 1, which is set to stably hold the thick parts at both ends. Therefore, there is no sliding movement between the movable member and the fixed member and the sealing body, so that it is possible to always accurately prevent dust from entering and adhering to ensure accurate valve function. However, since the flat plate-shaped first and second valve bodies 8 and 9 and the flexible dust seal membrane 5 are used as described above, although an accurate effect can be obtained as described above, The whole body is formed flat, and the top surface of the operation button fits within the upper surface area of the valve case, so even when used in a diving suit, it does not protrude, allowing stable attachment of the diving suit without getting caught, and preferable exhaust. This is a highly effective idea in practical terms, as it has the effect of making it possible to perform safe diving operations.

[Brief explanation of the drawing]

The drawings show embodiments of the invention,
Fig. 1 is a partially cutaway side view of the device according to the present invention, Fig. 2 is a plan view of the base body as seen from the inner side, Fig. 3 is a plan view as seen from the valve case side, and Fig. 4 is the fastening. A plan view of the nut, and FIG. 5 a side view thereof. However, in these drawings, 1 is a base body, 2 is a valve case, 3 is a slide table,
4 is the exhaust operation button, 5 is the dust seal membrane, 6 is the tightening nut, 7 is the spring, 8 is the first valve body, 9 is the second
Valve body, 10 is a partition member such as fabric, 11 is a guide tube, 12 is a fitting ring, 12a is an annular projection, 13 is a groove, 14 is an auxiliary projection, 15 is a spring receiver, 16 is a ventilation hole, 17 is Threaded tube, 18, 18a is a retaining ridge, 21
2 is a receiving hole, 22 is a fitting groove, 23 is an exhaust port, 24 is a pressure welding edge, 25 is a locking groove, 31 is a first seat, 32 is a second seat, 33 is a ventilation hole, and 34 is an engagement tube. , 35 is a groove part, 36 is a fixing nut, 41 is a shaft part, 42 is a male thread part, 51 is an outer end part, 52 is an inner end part, 53 is a flexible membrane part, 61 is a female thread part, 63 is a A fastening seat, 64 is a vent, and 68, 68a are retaining ridges.

Claims (1)

[Scope of utility model registration request] A base body that is fixed to the fabric or other partition member from the outside, and an operation button that is guided in the axial direction by a guide tube formed on the base body and that raises and lowers the base body for ventilation. and a valve body is provided on a slide table fastened to the operation button, and a valve case is attached to the base body to expose the operation button, wherein seats are arranged in multiple stages on the circumferential side of the slide table. At the same time, a first valve body and a second valve body are superimposed and attached to their seats, and a spring for restoring the operation button is interposed between the slide table and the base body, An exhaust valve characterized in that a flexible dust seal membrane is provided between the base body and the slide table, the inner and outer ends of which are thick fastening parts, and the middle part of which is thin.