JP5882778B2 - Suppression spool for opening drive part of high pressure gas container - Google Patents

Description

  The present invention relates to a restraint spool for an opening drive unit of a high-pressure gas container. The spool shaft that is restrained in a stored state is quickly released when an intended condition is satisfied, and the animal power is engaged in the opening operation. It is a thing.

  Various techniques have been proposed in the field of life jackets for the spool for restraining the opening drive portion of the high-pressure gas container using the water brittleness of paper. For example, Japanese Patent Publication No. 3-77118 (Patent Document 1) is proposed by one of the present applicants. Here, in the third column, lines 4 to 12, there is a description of the following points as a drawback of the prior art. In other words, in the case of a binding body in which paper tape is wound in several layers, each layer of the paper tape is in close contact with each other and no gap is formed between the layers. This means that it cannot be used in life jackets that require this.

  Therefore, the present invention prepares a plurality of locking bodies, wraps a band between these locking bodies, forms a gap between the paper layers at this portion, and makes contact with water at the space where the gap exists. ing.

  Japanese Patent Laid-Open No. 2001-213391 (Patent Document 2) discloses that the spool units 31, 31 and 32 divided into three on the circumference are concentrically converged by a paper binding material 33 to form a binding spool 35. A taper socket 27 is formed around the central axis, and a drive rod 29 is inserted through the central axis, and the conical surface 28 is engaged with the taper socket 27, so that the drive rod 29 is moved by the force of the starting spring 30. The drive rod 29 stored when the binding material 33 becomes wet due to submergence or the like and becomes unable to maintain the binding strength due to submergence or the like is released from the binding of the spool unit and moved.

Japanese Examined Patent Publication No. 3-77118 JP 2001-213391 A

  The invention disclosed in Japanese Patent Publication No. 3-77118 of Patent Document 1 is effective for rapid breakage when wet because a band is wound between a plurality of locking bodies to prepare a gap between the band. However, there is a problem that the structure is complicated and the winding work requires considerable time and skill.

  Further, in the invention disclosed in Japanese Patent Application Laid-Open No. 2001-213391 of Patent Document 2, a spool unit divided into three is bound by a binding material 33 to form a binding spool 35. In this case, since only the bundling force of the bundling material 33 is against the moving force of the driving rod 29, it is difficult to determine the material and the number of windings of the paper band. In addition, as can be seen in FIG. 7, in order to exert the water embrittlement effect, a crossing space for the binding material 33 must be formed between the spool units 31 adjacent to each other in the circumferential direction. Takes time.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a spool for suppressing an opening drive portion of a high-pressure gas container that can solve these problems and can be applied to various uses and is practically advantageous.

(First aspect) A restraining spool of an opening driving portion of a high-pressure gas container according to the present invention includes a case, a spool shaft, a spool body, and a paper ring. The case has a cylindrical shape, one end on the axis is open, the other end is closed by an end wall, and a receiving seat that protrudes from the inner wall surface toward the shaft center is provided, and an insertion hole for the spool shaft is formed at the center of the end wall. In addition, a plurality of water holes are opened on a circumference concentric with the insertion hole. The spool shaft has an input portion for driving force at one end and an output portion at the other end, and has an engaging groove on the outer peripheral surface of the intermediate portion. The spool body includes a disk portion and a leg portion, the disk portion is fitted to the case and supported by the receiving seat, a water channel is provided on the outer periphery, and a through hole for the spool shaft is provided at the center. . The leg portion extends from the disk portion along the insertion hole, and includes a protrusion that elastically engages with the engagement groove on the insertion hole side. The paper ring cooperates with the engagement of the protrusion with the engagement groove around the leg, constrains the spool shaft against its stored force, and breaks with the animal power by wetting. Release the axis.

  Since the spool body is supported by the receiving seat, it is stable. Further, in addition to the elastic engagement of the engagement groove of the spool shaft and the protrusion of the leg portion of the spool body, the spool shaft can be securely held at a predetermined position by the paper ring wound around the outside of the leg portion. Then, the water can be quickly admitted into the case through the water passage through the water channel, and the breakage due to the wetting of the paper ring can be accelerated.

(Claim 2) The receiving seat may be a step at the boundary between the large inner diameter portion and the small inner diameter portion of the case.
If it carries out like this, since a disk part is supported by the surrounding surface of a level | step difference, the stable support can be performed.

(Claim 3) The engagement groove has a trapezoidal cross section , and the center side of the spool shaft of the two parallel sides is a short side and the outer end side is a long side. Good.
This reduces the resistance when the spool shaft is disengaged from the protrusion, and does not require a large force to move the spool shaft.

(Claim 4) The water channel may be formed in the disk portion with its outer end radially opened, and may pass through the shaft portion in parallel with the axis, leaving a supported portion for the seat.
In this way, the disk portion can be supported stably by leaving the supported portion, and the escape space for water entering the case can be prepared, so that the paper ring can be effectively wetted and broken.

(Claim 5) The projection may have a truncated conical shape matching the cross section of the engagement groove.
In this way, since the projection and the engagement groove have the same shape, stable engagement can be achieved and the spool shaft can be reliably locked.

(Claim 6) The water passage hole of the case may be disposed so as to coincide with the water intrusion hole on the side of the instrument in which the case is accommodated.
If it carries out like this, the flow path cross section of water can be made the same, and inflow amount can be stabilized.

(7) A guide groove is provided on the outer peripheral surface of the case in parallel with the axis, and the guide groove is engaged with a guide protrusion formed on the inner wall surface of the housing portion of the instrument in parallel with the axis. Accordingly, the water passage hole may be aligned with the water intrusion hole.
If it carries out like this, this water flow hole and this water permeation hole can be matched, water inflow resistance can be made small and inflow amount can be stabilized.

  According to the restraining spool of the opening drive portion of the high-pressure gas container according to the present invention, the spool body is supported by the receiving seat, so that the spool body is stable, and the engagement groove of the spool shaft and the protrusion of the leg of the spool body are elastic. In addition to the engagement, the paper ring wrapped around the outside of these legs can securely hold the spool shaft in place, and the water can be quickly infiltrated into the case through the water passage through the water channel. Speeds up breakage.

  According to claim 2, since the disk portion is supported by the entire circumferential surface of the step, stable support can be achieved.

  According to the third aspect, the resistance when the spool shaft is detached from the protrusion is reduced, and a large force is not required for the movement of the spool shaft.

  According to the fourth aspect, the disk portion can be stably supported by leaving the supported portion, and the escape space for water entering the case can be prepared, so that the paper ring can be effectively wetted and broken.

  According to the fifth aspect, since the protrusion and the engagement groove have the same shape, stable engagement can be achieved and the spool shaft can be reliably locked.

  According to the sixth aspect, the cross-section of the water channel can be made the same, and the inflow amount can be stabilized.

  According to claim 7, the water flow hole and the water intrusion hole can be matched, and the inflow amount can be stabilized by reducing the inflow resistance of water.

It is a vertical slope view which shows the specific example of the spool for suppression of the opening drive part of the high pressure gas container concerning this invention. FIG. 3 is a perspective view showing a spool shaft 2 and a spool body 3 taken out. It is a vertical slope view of the state which applied the spool for suppression concerning the present invention to the device for expansion of a life jacket. FIG. 4 is a partially cutaway perspective view of a housing portion 25 of the instrument 22.

(First aspect) A restraining spool of an opening driving portion of a high-pressure gas container according to the present invention includes a case 1, a spool shaft 2, a spool body 3, and a paper ring 4.
The case 1 is cylindrical and has one end on the axis line x open and the other end closed by an end wall 5. The case 1 is provided with a receiving seat 7 projecting from the inner wall surface 6 toward the axis, and an insertion hole 8 of the spool shaft 2 is opened at the center of the end wall 5, and on the circumference concentric with the insertion hole 8. A plurality of water passage holes 9 are opened.
One end of the spool shaft 2 is an input portion 10 for driving force and the other end is an output portion 11, and an engaging groove 12 is provided on the outer peripheral surface of the intermediate portion.
The spool body 3 includes a disk portion 13 and a leg portion 14. The disk portion 13 is fitted to the case 1 and supported by the receiving seat 7, a water channel 15 is provided on the outer periphery, and an insertion hole 16 for the spool shaft 2 is provided at the center. The leg portion 14 extends from the disk portion 13 along the insertion hole 16, and includes a protrusion 17 that elastically engages with the engagement groove 12 on the insertion hole 16 side.
The paper ring 4 cooperates with the engagement of the protrusion 17 with the engaging groove 12 around the leg portion 14, restrains the spool shaft 2 against its stored force, and breaks with the animal power by wetting, so that the spool shaft 2 is Release.

  Since the spool body 3 is supported by the receiving seat 7, the spool body 3 can be stably supported, and the axis of the spool body 3 does not tilt, so that the smooth movement of the spool shaft 2 due to the breaking of the paper ring can be guaranteed. Further, the spool shaft 2 moves in one direction applied to itself by the elastic engagement of the engagement groove 12 provided in the spool shaft 2 and the protrusion 17 of the leg portion 14 of the spool body 3 and the cooperation of the paper ring. It is securely held at a predetermined position regardless of the mobility tendency. Then, water can be quickly admitted into the case 1 through the water passage hole 9 by the water channel 15, and the paper ring 4 can be quickly broken by being wetted, so that it can be adapted to an application in which urgency is indispensable as in a life jacket. .

(Claim 2) The receiving seat 7 is a step at the boundary between the large inner diameter portion D and the small inner diameter portion d of the case 1.
In this case, the disk portion 13 can be stably supported on the entire circumferential surface of the step.

(Claim 3) The engagement groove 12 has a trapezoidal cross section, and the center side of the spool shaft 2 of the two parallel sides is a short side and the outer end side is a long side .
In this case, the resistance when the spool shaft 2 comes off from the protrusion 17 is reduced, and a large force is not required to move the spool shaft.

(Claim 4) The water channel 15 may be formed in the disk portion 13 so that the outer end is radially opened and the supported portion 21 with respect to the receiving seat 7 is left in parallel with the axis x.
In this case, by leaving the supported portion 21, the disk portion 13 can be stably supported, and a space for water entering the case can be prepared, so that the paper ring can be effectively wetted and broken.

(Claim 5) The projection 17 has a truncated conical shape matching the cross section of the engagement groove 12.
In this case, since the protrusion 17 and the engagement groove 12 have the same shape, stable engagement can be achieved, and the spool shaft 2 can be reliably locked.

(Claim 6) The water passage hole 9 of the case 1 is disposed so as to coincide with the water intrusion hole 23 on the side of the instrument 22 in which the case 1 is accommodated.
In this case, the cross section of the water channel can be made the same, and the inflow rate can be stabilized.

(Claim 7) A guide groove 24 is provided on the outer peripheral surface of the case 1 in parallel with the axis x, and the guide groove 24 is formed on the inner wall surface 26 of the accommodating portion 25 of the instrument 22 in parallel with the axis x '. By engaging with the ridge 27, the water passage hole 9 matches the water intrusion hole 23.
In this case, the water passage hole 9 and the water intrusion hole 23 can be matched, and the inflow resistance can be reduced by reducing the inflow resistance of water.

  In FIG. 3, the instrument 22 exemplifies a life jacket inflation gas supply device, and the cylinder 31 is attached to the attachment port 33 of the instrument 22 via the adapter 32. When water enters the instrument 22 through the water intrusion hole 23 and the water passage hole 9 due to water shortage or the like, the paper ring 4 absorbs the water and becomes brittle, and the leg portion against the stock force of the spring 34 exerted on the spool shaft 2. The force pressing the 14 projections 17 against the engagement groove 12 is lost. Therefore, the spool shaft 2 pushes the protrusion 17 away from the engagement groove 12 and moves the output portion 11 outward of the insertion hole 8 of the case 1 and the shaft hole 35 of the instrument 22. By this movement, the lever 36 swings to push up the firing pin conducting shaft 37 at the other end, pierce the sealing plate 39 of the cylinder 31 with the needle 38 attached to the tip, take out the high-pressure gas inside and send it to the life jacket .

DESCRIPTION OF SYMBOLS 1 Case x Axis 2 Spool axis | shaft 3 Spool body 4 Paper ring 5 End wall 6 Inner wall surface 7 Receiving seat 8 Insertion hole 9 Water passage hole 10 Input part 11 Output part 12 Engaging groove 13 Disc part 14 Leg part 15 Water path 16 Insertion hole 17 Projection 21 Supported portion 22 Instrument 23 Water intrusion hole 24 Guide groove 25 Housing portion 26 Inner wall surface 27 Guide protrusion x 'Axis 31 Cylinder 32 Adapter 33 Mounting port 34 Spring 35 Shaft hole 36 Lever 37 Shooting needle conduction shaft 38 Needle 39 Sealing plate

Claims (7)

Including a case (1), a spool shaft (2), a spool body (3), and a paper ring (4);
The case (1) has a cylindrical shape, one end on the axis (x) is open, the other end is closed by the end wall (5), and a receiving seat (7 ) protruding from the inner wall surface (6) toward the axis is provided. An opening hole (8) of the spool shaft (2) at the center of the end wall (5), and a plurality of water passage holes (9) on a circumference concentric with the insertion hole (8). ,
The spool shaft (2) has an input portion (10) for driving force at one end and an output portion (11) at the other end, and has an engaging groove (12) on the outer peripheral surface of the intermediate portion,
The spool body (3) includes a disk part (13) and a leg part (14), the disk part (13) is fitted to the case (1) and supported by the receiving seat (7), The water channel (15) is provided in the center and is provided with an insertion hole (16) of the spool shaft (2) in the center, and the leg portion (14) extends from the disk portion (13) along the insertion hole (16). A protrusion (17) that elastically engages with the engagement groove (12) on the insertion hole (16) side,
The paper ring (4) cooperates with the engagement of the protrusion (17) with the engagement groove (12) around the leg (14), and the spool shaft (2) is opposed to its accumulated force. A spool for restraining an opening driving portion of a high-pressure gas container, wherein the spool is restrained and broken by the accumulated force when wet to release the spool shaft (2).   The spool for restraining the opening drive portion of the high-pressure gas container according to claim 1, wherein the receiving seat (7) is a step at the boundary between the large inner diameter portion (D) and the small inner diameter portion (d) of the case (1). . The engagement groove (12) has a trapezoidal cross section , and the center side of the spool shaft (2) of the two parallel sides is a short side and the outer end side is a long side, and the spool shaft (2) has a long side . The spool for deterrent of the opening drive part of the high-pressure gas container according to claim 1 or 2 surrounding the periphery.
  The water channel (15) is formed in the disk portion (13) with a radially open outer end, and penetrates in parallel with the axis (x) leaving a supported portion (21) for the receiving seat (7). The spool for suppressing the opening drive portion of the high-pressure gas container according to claim 1, 2 or 3.   The spool for suppressing the opening drive portion of the high-pressure gas container according to claim 1, wherein the protrusion (17) has a truncated conical shape matching the cross section of the engagement groove (12).   The water passage hole (9) of the case (1) is disposed so as to coincide with the water intrusion hole (23) on the side of the instrument (22) in which the case (1) is accommodated. 5. A spool for restraining the opening drive unit of the high-pressure gas container according to one of items 5 to 6.   A guide groove (24) is provided on the outer peripheral surface of the case (1) in parallel with the axis (x), and the guide groove (24) is connected to the inner wall surface (26) of the housing portion (25) of the instrument (22). ) Is engaged with the guide ridge (27) formed in parallel to the axis (x ′), the water passage hole (9) is aligned with the water intrusion hole (23). Item 7. A spool for suppressing an opening drive unit of a high-pressure gas container according to one of items 1 to 6.

Images