JPH08105560A - Purge valve of diving apparatus - Google Patents

Abstract

PURPOSE: To provide a purge valve of a diving apparatus which has a simple structure and can be washed easily, as well as can prevent the invasion of the water into the diving apparatus securely. CONSTITUTION: A base 10 to form the purge port 16 of a diving apparatus; a cover 24 provided demountable to the base 10 by covering the base 10; a valve body 32 to block the exhaust port 16 by an autospring 34 set elastically between the cover 24, and to open the exhaust port 16 when the inner pressure of the diving apparatus is made higher than the outer pressure; a pressing shaft 42 having a push-button 52 as well as a sliding shaft 48, and provided allowable to be pressed in the inside direction of the driving apparatus; a manual spring 54 provided elastically between the valve body 32 and the push-button 52, and to energize the pressing shaft 42 in the outside direction of diving apparatus normally; a receiver 58 provided to the base 10; and a lever member 64 moved in the outer direction of the diving apparatus by pressing in the pressing shaft 42 in the inner direction of the diving apparatus, and to press the valve body 32 in the direction to open the purge port 16; are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust valve for diving equipment.

[0002]

2. Description of the Related Art In diving equipment such as waterproof diving suits (dry suits) and life vests with an underwater buoyancy adjustment function, the air supplied from an air tank is retained inside, but the air pressure inside the diving equipment is dived. It is necessary to adjust according to the depth. In order to adjust the air pressure inside the diving equipment, in addition to compressed air supply means for adjusting the supply of air from the air tank, exhaust means for exhausting the air accumulated inside the diving equipment is required. As an exhaust means of this diving equipment, conventionally, there is an exhaust valve 100 mounted on a dry suit as shown in FIG. 1
Reference numeral 10 denotes a base portion, which is fixedly provided in an opening provided in the cloth 112 of the dry suit, forms an exhaust port 114 of the dry suit, and a valve seat 116 is formed on the periphery of the exhaust port 114. 118 is a cover part,
A ventilation port 1 which is detachably provided by covering the base portion 110 and screwing into the base portion 110, and which allows ventilation with the outside world.
Have twenty. Reference numeral 122 denotes an automatic valve body, and an automatic spring 124 elastically mounted between the automatic valve body 122 and the cover portion 118 normally abuts on the valve seat 116 to close the exhaust port 114, so that the internal pressure of the diving equipment is reduced. The exhaust port 114 is automatically opened when the pressure rises above the external pressure. This allows
Air with a higher pressure than the outside world inside the dry suit can be discharged, and the internal pressure of the dry suit can be adjusted automatically. The automatic valve body 122 includes a valve holder portion 122a formed of a rigid material, and a ring valve 1 attached to the outer periphery of the valve holder portion 122a so that the peripheral edge portion is exposed in a ring shape.
22b.

Reference numeral 126 is a manual valve element and an automatic valve element 122.
Vent hole 128 formed in the center of the valve holder portion 122a of the
The valve seat 129 is provided on the inner surface of the automatic valve body 122 so as to be opened and closed. The manual valve body 126 is fixed to the inner end of the sliding shaft portion 130. The sliding shaft portion 130 is slidably inserted into a through hole of a bearing portion 122c formed integrally with the valve holder 122a via a support portion formed in the vent hole 128 in a radial pattern.
A push button portion 134, which is exposed from a penetrating portion 132 formed in the cover portion 118 and can be pressed by the user's fingers, is fixed to the outer end of the sliding shaft portion 130. A manual spring 136 is mounted between the push button portion 134 and the bearing portion 122c, and the manual valve element 126 is
The diving equipment is urged outward so as to close the vent hole 128. If the user presses the push button portion 134 against the biasing force of the manual spring 136, the vent hole 1
28 is opened so that air having a higher pressure than the outside world in the dry suit can be discharged. Reference numeral 138 denotes a first check valve, which allows air to flow from inside the dry suit to the outside when the internal pressure of the dry suit is higher than the external pressure, and when the internal pressure of the dry suit is lower than the external pressure. , The exhaust port 114 is closed to prevent water from entering the dry suit.
Further, 140 is a second check valve, which allows exhaust from the dry suit and prevents water from entering the dry suit, like the first check valve 138.

According to the exhaust valve 100, the air pressure (internal pressure) in the dry suit is slightly higher than the external water pressure (external pressure) due to the action of the urging force of the automatic valve body 122 and the automatic spring 124. The internal pressure of the suit can be adjusted automatically. By keeping the internal pressure of the dry suit slightly higher than the external pressure, it is possible to prevent water from entering the dry suit and prevent tightening of the dry suit to the dry suit. Further, it is possible to prevent the internal pressure in the dry suit from becoming too higher than the external pressure when levitating in water, and to prevent the volume of the dry suit internal space from expanding and the buoyancy to rapidly increase. In this way,
It is possible to prevent the risk of diving sickness due to sudden rise. Then, by operating the manual valve body 126, the internal pressure of the dry suit can be adjusted according to the diver's intention, and it is possible to flexibly cope with an unexpected situation that cannot be dealt with by the action of the automatic valve body 122.

[0005]

However, in the conventional exhaust valve 100 described above, when the manual valve body 126 is erroneously operated and the internal pressure in the dry suit is smaller than the external pressure, the water into the dry suit is reduced. May be allowed to enter. This is because the first check valve 138 and the second check valve 140 act so as to close the exhaust port when the external pressure becomes higher than the internal pressure, but especially when the differential pressure between the external pressure and the internal pressure is large. , Because it may be greatly deformed to allow water to enter. Further, since the direction in which the manual valve body 126 moves to open and the direction in which the external pressure pushes the push button portion 134 to open the manual valve body 126 match, when the external pressure becomes higher than the internal pressure. Manual valve body 126
Is easily released. This is contrary to the fact that the exhaust valve 100 should be closed when the external pressure becomes higher than the internal pressure. Further, the conventional exhaust valve 100 requires the automatic valve body 122 and the manual valve body 126, and it is necessary to provide the first check valve 138 and the second check valve 140 corresponding to each of the two valve bodies. And the structure is complicated. Cleaning work for maintenance also becomes complicated.

It is therefore an object of the present invention to provide an exhaust valve for a diving tool which can prevent water from entering the inside of the diving tool and which has a simple structure and is easy to wash.

[0007]

In order to solve the above problems, the present invention has the following constitution. That is, the present invention is
A base portion that is fixedly provided in an opening provided in the diving equipment, forms an exhaust port of the diving equipment, and has a valve seat formed on the periphery of the exhaust port, and a base portion that covers the base portion. A cover part that is detachably provided and has a vent hole capable of ventilating with the outside world, and an auto spring that is elastically mounted between the cover part always contacts the valve seat to close the exhaust port, In the exhaust valve of the diving equipment provided with a valve body that opens the exhaust port when the internal pressure of the diving equipment rises higher than the external pressure,
The valve body has a sliding shaft portion that is slidably inserted in a through hole that penetrates through the center of the valve body, and is provided at the outer end portion of the sliding shaft portion and is drilled in the cover portion. Has a push button portion that can be pressed by a finger from the penetrating portion, and a push shaft that is provided so as to be able to be pushed inward into the diving equipment, and is elastically mounted between the valve body and the push button portion, and is normally A manual spring for urging the pressing shaft toward the outside of the diving equipment, a receiving portion provided in the base portion in the exhaust port, and a receiving portion provided in communication with the receiving portion and the pressing shaft, When the shaft is pushed inward of the diving tool, the shaft is moved outwardly of the diving tool, and the pusher pushes the valve body in a direction in which the exhaust port is opened.

Further, the pusher body is supported at an intermediate portion by the receiving portion, one end side is connected to the tip end side of the pressing shaft, the other end side is located on the back surface side of the valve body, and the pressing shaft is submerged. Since the lever member is a lever member that is pushed inward toward the inside of the tool to move the valve body in the direction of opening the exhaust port by a lever action, the structure can be simplified and the valve body can be reliably operated manually.

Further, the valve body is formed of a rigid material, and the valve holder portion having the through hole formed in the center thereof,
A ring valve, which is made of a highly elastic material and is attached to the outer periphery of the valve holder so that the peripheral edge is exposed in a ring shape, reliably prevents water from entering the diving equipment. be able to.

Further, since the lever member is axially attached to the tip end side of the pressing shaft at one end side, the lever member can be integrated with the valve body, the pressing shaft and the manual spring, and is disassembled. Easy to handle when cleaning.

Further, the cover portion is provided with a lock portion which is engaged with and disengaged from the pressing shaft, and allows the pressing shaft to move outward of the diving tool when the locking portion is not engaged with the pressing shaft. By preventing the pressing shaft from moving to the outside of the diving equipment when the lock portion is engaged with the pressing shaft, it is possible to restrict the valve body from moving in the direction in which the exhaust port is opened.

[0012]

According to the present invention, when the push button portion is pressed by the finger, the push shaft is pushed inward into the diving tool, and the push body connected to the push shaft and the receiving portion opens the valve body to the exhaust port. Push in the direction you want to. For example, by converting the pushing operation of the pressing shaft by the lever action and the action of the cam into the action in which the pushing body pushes up the valve body, the valve body can be pushed in the direction in which the exhaust port is opened. Also, like the conventional exhaust valve, when the internal pressure of the diving equipment rises above the external pressure, the valve body moves in the direction of opening the exhaust port against the biasing force of the auto spring, and The internal pressure can be adjusted automatically. Therefore, since the operation of the conventional automatic valve element and the operation of the conventional valve element can be covered by one valve element, the structure is simple, the manufacturing is easy, and the maintenance such as cleaning is easy. Further, the action of the automatic valve body and the action of the manual valve body can be covered by one valve body, and it is not necessary to provide a check valve corresponding to the manual valve body unlike the conventional exhaust valve, and the configuration can be simplified. Therefore, it is possible to reduce the possibility that water will enter the diving equipment. Also, with this exhaust valve, even if the push button is pressed by mistake, if the internal pressure of the diving equipment is lower than the external pressure, the external pressure is applied to the valve body, so that the exhaust port is opened. Since a large force is required to push up, the pressing shaft cannot be easily pushed in. The greater the external pressure is than the internal pressure of the diving equipment,
Manually pressing the valve body becomes difficult. Therefore, it is possible to more reliably prevent water from entering the diving equipment.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of an exhaust valve of a diving tool according to the present invention, showing a state in which the exhaust valve is closed. Reference numeral 10 denotes a base portion, which is fixedly provided in an opening provided in a cloth 12 of a diving equipment (dry suit), forms an exhaust port 16 of the dry suit, and has a valve seat at the periphery of the exhaust port 16. 18 is formed. In the present embodiment, the male screw portion for mounting the base portion 10 has a back cap 20 arranged inside the cloth 12.
When the dough 12 is screwed into the female screw part of the base part 10 and is sandwiched between the base part 10 and the back cap 20,
0 is fixed to the opening of the cloth 12. Also, the base portion 10
Also, the back cap 20 is fixed to the cloth 12 in a watertight state by the concentric circular protrusions 22 formed on the surface in contact with the cloth.

Reference numeral 24 denotes a cover portion which covers the base portion 10 and is detachably attached to the base portion 10. The cover portion 24 has a vent hole 26 that allows ventilation with the outside world,
It is composed of an upper cover 28 and a lower cover 30 which are rotated relative to each other by a click mechanism which will be described later. 32 is a valve body, and the upper surface of this valve body 32,
When the auto spring 34 elastically mounted between the cover 24 and the inner surface of the upper portion of the cover 24 normally abuts the valve seat 18 to close the exhaust port 16 and the internal pressure of the dry suit rises above the external pressure, As shown in 2, the dry suit is directed outward (upward in the drawing) against the urging force of the auto spring 34.
To open the exhaust port 16. The valve body 32 is made of a rigid material, and is made of a material having high elasticity and a valve holder portion 38 having a through hole 36 formed in the center thereof, and the periphery of the valve holder portion 38 has a ring shape. And a ring valve 40 mounted so as to be exposed. Since the external pressure acts on the valve holder portion 38, unlike the valve body entirely made of an elastic material, it is possible to suppress the deformation due to the external pressure to be small, and it is possible to prevent water from entering the dry suit.

Reference numeral 42 denotes a pressing shaft, which has a sliding shaft portion 48 which is slidably inserted in a through hole 36 penetrating through the center of the valve body 32 via an "O" -ring 46. At the same time, it has a push button portion 52 which is provided on the outer end of the sliding shaft portion 48 and which is exposed from a through portion 50 formed in the cover portion 24 and can be pushed by a finger. It is possible. In the present embodiment, the push button portion 52 is screwed and fixed to the outer end of the sliding shaft portion 48.

Reference numeral 54 is a manual spring, and the valve body 3
It is elastically mounted between the upper surface of 2 and the lower surface of the push button portion 52, and normally urges the pressing shaft 42 toward the outside of the dry suit. A washer 56 is arranged so that the biasing force of the manual spring 54 reliably acts on the upper surface of the valve element 32. Further, in this embodiment, as the manual spring 54, a coil spring having a spring coefficient ten times or more larger than that of the auto spring 34 is used.

Reference numeral 58 denotes a receiving portion, which is provided inside the exhaust port 16 of the base portion 10. The receiving portion 58 can be pulled out upward, and the step portion 6 formed in the exhaust port 16
The exhaust port 16 is removably attached to the exhaust port 16. In this embodiment, as shown in FIG. 7, the receiving portion 58 has an outer edge portion 58a of a circular ring and an exhaust port 1 inside the outer edge portion 58a.
Support rib 58b provided in a cross shape so as not to block 6
And a support frame portion 58d that is formed in a central portion of the support rib 58b and that is formed to be supported by the support rib 58b and that forms a rectangular through hole 62 and a protrusion portion 58c. In addition, the groove portion 58 provided on the outer edge portion 58a is provided on the protrusion 10a provided on the base portion 10.
Since e is fitted, the base portion 10 and the receiving portion 58 do not rotate relative to each other.

Reference numeral 64 is a lever member, which is a receiving portion 58.
And the pressing shaft 42 are connected to each other. When the pressing shaft 42 is pushed inward in the dry suit, it is moved outward in the dry suit and pushes the valve element 32 in the direction in which the exhaust port is opened. Acts as a moving body. This lever member 64
Has a halfway portion 64b supported by the receiving portion 58 and one end side 64a.
Is connected to the front end side of the pressing shaft 42, the other end side 64c is located on the back surface side of the valve body 32, and the pressing shaft 42 is pushed inward in the dry suit, so that the valve body 32 is exhausted by the lever action. Move in the direction to open.

Further, in this embodiment, the lever member 64 is pivotally attached to the force point shaft 68 of the tip end portion 48a of the pressing shaft 42 at the one end side 64a. Specifically, the two lever members 64 are
The valve body 32 is pivotally attached to the power point shaft 68 so that the other end side 64c protrudes in both left and right directions while being inserted into the slit provided in the tip end portion 48a, and moves the valve body 32 in a balanced manner by lever action. it can. Further, the lever member 64 is located in a state of being bridged over the through hole 36 as shown in FIG. 1 when the pressing shaft 42 is not pushed in, and prevents the pressing shaft 42 from coming out of the valve body 32. ing. Thereby, the lever member 64, the valve body 32, the pressing shaft 42, and the manual spring 54 can be integrated, and can be easily handled when disassembled and washed. Note that the lever member 64 is not limited to being pivotally attached to the tip end portion 48a of the pressing shaft 42 at the one end side 64a as in the present embodiment, and the protrusion portion 58d of the receiving portion 58 serving as a fulcrum of the leverage action.
It may be pivotally attached at the midway portion 64b, or may be pivotally attached at the other end side 64c to the valve body 32 which is the action point of the leverage action. At this time, in order to make the valve body 32, the pressing shaft 42, and the manual spring 54 together, a flange portion may be formed on the tip end side of the pressing shaft 42 so as not to come out of the through hole 36. Further, the lever member 64 is not limited to two.

The pusher body is not limited to the lever member 64, but may be one that utilizes the action of a cam or the like as a conversion mechanism that transforms the action in the pushing direction into the action in which the valve body 32 acts in the direction in which the valve body 32 rises from the valve seat. Anything that works will do.
For example, when it is formed in a ring shape having a plurality of sloped convex portions on the upper surface and is received by the receiving portion and the pressing shaft is pushed in,
A surface cam lower part that rotates within a predetermined range around the axis of the pressing shaft along a guide portion formed on the outer surface of the pressing shaft,
It is arranged between the lower portion of the surface cam and the valve body, is provided so as to be able to rise in the axial direction of the pressing shaft, and is fitted on the pressing shaft in a state in which the rotation about the axis of the pressing shaft is restricted. Together,
It is possible to use a surface cam mechanism having a surface cam upper portion having a protrusion provided on the lower surface corresponding to the inclined convex portion of the surface cam lower portion. According to this surface cam mechanism, when the pressing shaft is pushed in, the lower portion of the surface cam rotates by a predetermined angle, the slope convex portion of the lower portion of the surface cam pushes the protruding portion of the upper portion of the surface cam upward, and the upper portion of the surface cam moves. By rising, the valve body can be lifted from the valve seat. When the pushing force on the pushing shaft is released, the pushing shaft is raised by the manual spring, and the lower part of the surface cam rotates in the opposite direction along the guide part accordingly, and the projection on the sloped convex part. The riding state of the section is released, and the valve body can return to the state of covering the exhaust port.

Reference numeral 70 denotes an inner valve, which has a circular valve portion 70a and a protrusion pillar portion 7 which is integrally provided in the central portion thereof.
It consists of 0b. A constricted portion is provided on the protruding pillar portion 70b. In this inner valve 70, the protruding pillar portion 70b is inserted into the through hole in the center of the supporting bone portion 72 formed in a radial shape at the lower end portion of the base portion 10 so as not to block the exhaust port, and the constricted portion is engaged. It is fixed by matching. The inner valve 70 acts so as to open the exhaust port 16 when the internal pressure of the dry suit becomes higher than the external pressure and close the exhaust port 16 when the internal pressure of the dry suit becomes lower than the external pressure. , Acts as a safety valve to prevent water from entering the dry suit. The inner valve 70 can be washed by removing the receiving portion 58 from the base portion 10.

Next, when the internal pressure of the dry suit becomes higher than the external pressure, the valve mechanism 32 is prevented from automatically moving in the direction of opening the exhaust port 16 and the automatic exhaust function is locked. Will be described. FIG. 1 shows a state in which the automatic exhaust function is locked, and FIG. 2 shows a state in which the lock of the automatic pressure adjusting function is released. 4 is an explanatory view of the cover portion 24 in a state where the automatic exhaust function is locked, as viewed from the bottom side, and FIG. 5 is a view in which the cover portion 24 in a state where the automatic exhaust function is unlocked is viewed from the bottom side. FIG.

As shown in FIG. 1, the lock portion 74 provided on the inner peripheral edge of the upper cover 28 of the cover portion 24 forming the penetrating portion 50 so as to project downward is provided with the lock button 74 of the push shaft 42.
It engages with an ear portion 76 protruding outward from the side wall of 2. As shown in FIG. 4, each of the lock portion 74 and the ear portion 76 is formed in two places, and regulates the movement of the pressing shaft 42 toward the outside of the dry suit in a well-balanced manner. In this way, when the lock portion 74 engages with the push button portion 52 (pressing shaft 42), the pressing shaft 42 is prevented from moving outward of the dry suit, so that the valve body 32 is connected to the auto spring 34. The urging force of both of the manual springs 54 restricts the outward movement of the dry suit. That is, the operation of the automatic exhaust function is restricted. When the spring coefficient of the manual spring 54 is much larger than that of the automatic spring 34 as in the present embodiment, the valve body 32 may substantially move automatically in the direction of opening the exhaust port 16. The mechanism that is blocked and the lock portion 74 engages with the ear portion 76 acts as a substantial lock mechanism of the automatic exhaust function. Further, when the lock portion 74 does not engage with the ear portion 76 of the push button portion 52, that is, when the locked state is released, as shown in FIG. 2, the pressing shaft 42 moves to the outside of the dry suit. This allows the automatic exhaust function to operate.

Switching of the lock mechanism is performed by the upper cover 28.
The lower cover 30 and the lower cover 30 are relatively rotated in a predetermined section by a click mechanism. An embodiment of the click mechanism will be described below with reference to FIGS. 1, 4 and 5. Reference numeral 78 denotes a roller, which is formed in a cylindrical roller shape, is inserted into a through hole 80 provided in the lower cover 30, and is rotatably held between a ring-shaped leaf spring 82 and the lower surface of the upper cover 28. Has been retained. The leaf spring 82
Are attached to the upper cover 28 side with screws 86 at four mounting portions 84 protruding from the upper cover 28 so as to be in contact with the lower surface of the shell wall of the lower cover 30 forming the through hole 80. The mounting portion 84 is fitted in a long through hole 88 formed in the upper cover 28, and the upper cover 28 and the lower cover 30 relatively move in a sliding contact state within the range of the long through hole 88. To allow that. The diameter of the roller 78 is set to be slightly larger than the wall thickness of the shell wall of the lower cover 30 forming the through hole 80, and the lower surface of the upper cover 28 comes into rolling contact with the roller 78. Also, the upper cover 28
On the lower surface of the two recesses 90 corresponding to the one roller 78,
92 are provided at a predetermined angular interval.

According to the click mechanism having the above-described structure, first, as shown in FIG. 4, when the locking portion 74 of the upper cover 28 is engaged with the ear portion 76 of the push button portion 52, the roller 7
8 is locked in the one recess 90 by the biasing force of the leaf spring 82. Then, when the upper cover 28 is rotated counterclockwise in the drawing with respect to the lower cover 30, the roller 78 is separated from the one concave portion 90 against the biasing force of the leaf spring 82,
When the upper cover 28 is further rotated, the roller 78 is locked in the other recess 92 as shown in FIG. 5, and the locked state is released. With such a click mechanism, it is possible to reliably set the locked and unlocked states of the automatic exhaust function. The pressing shaft 42 has a rectangular through-hole 62 (FIG. 7) provided in the receiving portion 58, the tip portion 48a of which is formed in a rectangular outer shape and which is prevented from rotating with respect to the base portion 10. (See
The base portion 10 and the lower cover 30 fixed to the base portion 10 do not rotate relative to each other.

Next, a mechanism for attaching / detaching the cover portion 24 to / from the base portion 10 will be described with reference to FIGS. 6 is a cross-sectional view illustrating a state where the stopper mechanism is operated and the cover portion 24 is attached to the base portion 10, FIG. 7 is a plan view illustrating details of the base portion 10, and FIG. 8 illustrates engagement by the stopper mechanism. It is sectional drawing explaining the released state. This attachment / detachment mechanism is based on the bayonet system generally used for cameras and the like. That is, as shown in FIG. 1, a plurality of outer peripheral edge projections 94 are intermittently provided on the outer peripheral edge of the base portion 10.
And a plurality of inner peripheral edge projections 95, which are intermittently provided on the inner peripheral edge of the cover portion 24, are engaged with each other by fitting and rotating operations, and as shown in FIG. The cover 24 is attached to the cover so that it cannot be easily removed.

The stopper mechanism 96 prevents the base portion 10 and the cover portion 24 from rotating relatively to each other.
In order to prevent the cover part 24 from coming off from 0, it is composed of a concave part 97 provided in the base part 10 and a claw part 98 provided in the cover part 24 so as to be detachable from the concave part 97. The claw 98 is provided with the window 31 provided on the lower cover 30.
The coil spring 99 is guided so that it can move up and down, and is elastically mounted between the claw portion 98 and the lower cover 30.
Is normally urged downward to engage the recess 97. As shown in FIG. 8, by moving the pawl portion 98 upward against the biasing force of the coil spring 99, the engagement between the concave portion 97 and the pawl portion 98 is released. In this embodiment, two stopper mechanisms 96 are provided, and the cover 24 cannot be removed unless the two claws 98 are simultaneously operated. This prevents the cover portion 24 from being detached due to an erroneous operation, and secures its safety.

Next, the usage state of the above embodiment will be described. First, when the push button portion 52 is pressed with a finger, the push shaft 42 is pushed inward in the dry suit, and the push shaft 42 is pushed.
The lever member 64 axially attached to the one end side 64a is received by the receiving portion 58 at the midway portion 64b, and the other end side 64 due to the action of the lever.
c contacts and pushes the valve element 32 in the direction in which the exhaust port 16 is opened. This allows the air in the dry suit to be discharged. As shown in FIG. 3, the slope 66 provided on the tip side of the lever member 64 prevents the lever member 64 from rotating more than a predetermined amount, thereby defining the range of rotation of the lever member 64. Further, like the conventional exhaust valve, when the internal pressure of the dry suit rises above the external pressure, the valve body 32 moves in the direction of opening the exhaust port 16 against the biasing force of the auto spring 34, The air in the dry suit can be discharged. Therefore, one valve body 32 can cover the action of the automatic valve body and the action of the manual valve body of the conventional exhaust valve.

Further, in this exhaust valve, the push button portion 5
Even if 2 is mistakenly pressed, if the internal pressure of the dry suit is smaller than the external pressure, the external pressure is applied to the valve body 32, so it is large to push up the valve body 32 so that the exhaust port 16 opens. A force is required and the push shaft 42 cannot be easily pushed in. The higher the external pressure is than the internal pressure of the dry suit, the more difficult it is to manually press the valve element 32. Therefore, it is possible to more reliably prevent water from entering the dry suit.

In the above embodiment, the case where the present invention is applied to a dry suit has been described, but it goes without saying that the present invention can be applied to other diving equipment such as a lifejacket with an underwater buoyancy adjusting function. . Although various preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

[0031]

According to the present invention, when the push button portion is pressed with fingers, the push shaft is pushed inward of the diving tool, and the push body connected to the push shaft and the receiving portion exhausts the valve body from the exhaust port. Can be pushed in the opening direction, and the high pressure air in the diving equipment can be exhausted. Also, like the conventional exhaust valve, when the internal pressure of the diving equipment rises above the external pressure, the valve body moves in the direction to open the exhaust port against the biasing force of the auto spring, The internal pressure can be adjusted automatically. Since the action of the automatic valve element and the action of the manual valve element can be covered by one valve element in this way, the configuration is simple, the possibility of water invading the diving equipment can be reduced, and the manufacturing is easy, and This has an advantageous effect that maintenance such as cleaning can be easily performed. Also, with this exhaust valve, even if the push button portion is pressed by mistake, if the inner pressure of the diving equipment is smaller than the outer pressure,
Since external pressure is applied to the valve body, a large force is required to push up the valve body so that the exhaust port is opened, and the pressing shaft cannot be easily pushed in. The greater the external pressure is than the internal pressure of the diving equipment, the more difficult it is to manually press the valve body. Therefore, there is also an advantageous effect that water can be more reliably prevented from entering the diving equipment.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of an exhaust valve for a diving equipment according to the present invention.

FIG. 2 is a sectional view showing an automatic exhaust state of the embodiment of FIG.

FIG. 3 is a sectional view showing a manual exhaust state of the embodiment of FIG.

FIG. 4 is a bottom view for explaining the locked state of the automatic exhaust function of the embodiment of FIG.

FIG. 5 is a bottom view illustrating a state in which the lock of the automatic pressure adjustment function is released.

FIG. 6 is a cross-sectional view showing a mounted state of a base portion and a cover portion of the embodiment of FIG.

FIG. 7 is a plan view showing a base portion of the embodiment shown in FIG.

FIG. 8 is a cross-sectional view showing a stopper mechanism when removing the cover part from the base part.

FIG. 9 is a sectional view showing a conventional technique.

[Explanation of symbols]

 10 Base part 12 Fabric 16 Exhaust port 18 Valve seat 24 Cover part 26 Vent port 28 Upper cover 30 Lower cover 32 Valve body 34 Auto spring 36 Through hole 38 Valve holder part 40 Ring valve 42 Pressing shaft 48 Sliding shaft part 50 Through part 52 push button part 54 manual spring 58 receiving part 64 lever member 68 force point shaft 70 inner valve

Claims (5)

[Claims] 1. A base portion, which is fixedly provided in an opening provided in a diving equipment, forms an exhaust port of the diving equipment, and has a valve seat formed at a peripheral edge of the exhaust port, and the base portion. A cover part that is provided so as to be covered and detachably attached to the base part and has a vent hole that allows ventilation to the outside world, and an auto spring that is mounted elastically between the cover part and the cover part that is always in contact with the valve seat to exhaust the air. An exhaust valve for a diving tool, comprising a valve body that closes the mouth and opens the exhaust port when the inner pressure of the diving equipment rises above the outer pressure, in a watertight state and sliding in a through hole that penetrates through the center of the valve body. In addition to having a sliding shaft portion that is movably inserted, a push button portion that is provided at an outer end portion of the sliding shaft portion and that can be pressed by a finger from a penetrating portion formed in the cover portion, A pressing shaft provided so as to be pushed inward of the diving equipment, the valve body and the A manual spring that is elastically mounted between the button parts and normally urges the pressing shaft in the outer direction of the diving tool; a receiving part provided in the base part inside the exhaust port; and a receiving part. A pusher provided in connection with the pressing shaft, which is pushed inward in the diving tool to be moved outward in the diving tool and which pushes the valve element in a direction in which the exhaust port is opened. An exhaust valve for diving equipment, characterized by comprising: 2. The pusher body has an intermediate portion supported by the receiving portion, one end side is connected to the tip end side of the pressing shaft, the other end side is located on the back surface side of the valve body, and the pressing shaft is a diving body. 2. The exhaust valve for a dive tool according to claim 1, wherein the exhaust valve is a lever member that is pushed inward toward the tool to move the valve body in a direction of opening the exhaust port by a lever action. 3. The valve body is formed of a rigid material, the valve holder portion having the through hole formed in the center, and an elastic material, and a peripheral edge portion of the valve holder portion on the outer periphery thereof. The exhaust valve for a diving equipment according to claim 1 or 2, comprising a ring valve mounted so as to be exposed in a ring shape. 4. The lever member is axially attached to the tip end side of the pressing shaft at one end side.
Or the exhaust valve of the diving equipment according to 3. 5. The cover portion is provided with a lock portion that engages with and disengages from the pressing shaft, and when the locking portion does not engage with the pressing shaft, the pressing shaft is allowed to move outwardly of the diving equipment. ,
The exhaust valve for a diving tool according to claim 1, 2, 3 or 4, wherein when the lock portion is engaged with the pressing shaft, the pressing shaft is prevented from moving toward the outside of the diving tool.