JP2014119044A - Gas bomb opener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and surely open a gas bomb without requesting a specific requirement to an operator or the like.SOLUTION: A gas bomb opener includes: a body part including a ball hole formed through a side cylinder; a rotary ring including a ball by-pass port and inserted into the outside of the body part so as to be rotated around the body part acting as a rotary shaft and moved along a longitudinal direction of the body part; a bomb adaptor configured so that one end is fixed on the body part, the other end forms an attachment port of a gas bomb and a seal plate is arranged in the vicinity of a body part side end part; a spring part inserted into the inside of the body part and locked by a spring stop part of an inner wall end part of the body part; a cutter part attached between the spring part and the seal plate and including a pin part energized to the seal plate side by force of the spring part and having a sharp tip; a ball located between the cutter part and the bomb adaptor to regulate abutment of the pin part on the seal plate by force of the spring part; and a ring driving part arranged spirally along an outer periphery of the rotary ring and allowed to be expanded and contracted while fixing one end on the body part and fixing the other end on the rotary ring.

Description

  The present invention relates to a gas cylinder opening device.

  A gas cylinder unsealing device is used for unsealing a gas cylinder filled with a gas for expanding a buoy float used in a marine sensor or the like. For example, Japanese Patent Application Laid-Open No. 2002-193170 discloses a configuration as shown in FIG. 7A is a cross-sectional view before opening, and FIG. 7B is a cross-sectional view after opening.

  The gas cylinder opening device includes an operating device 105 that opens the sealing port 104 a of the cylinder 104, and a guide cylinder 106 a that is provided coaxially with the cylinder 104. A pin 107 and a coil spring 108 are disposed inside the guide tube 106a. The pin 107 is fixed at a position away from the sealing port 104 a by the stopper 109. The stopper 109 includes a sphere 109b inserted into a recess 109c provided on the side surface of the pin 107, and this inserted state is held by a release key 109d.

  Then, when the release key 109d is removed, as shown in FIG. 7B, the pin 107 is released from being fixed, and the pin 107 is shot toward the sealing port 104a. Thereby, the sealing port 104a is opened.

JP 2002-193170 A

  However, in the configuration according to Japanese Patent Application Laid-Open No. 2002-193170, when an operator or the like touches the release key 109d carelessly, there is a problem that the release key 109d is pulled. Therefore, the handler is required to receive training.

  In addition, such a situation has a problem in that special requirements are added to the storage facility, and the cost of the apparatus itself or its peripheral facilities is increased as well as restrictions on manufacturing.

  SUMMARY OF THE INVENTION Accordingly, a main object of the present invention is to provide a cylinder opening device that can be opened easily and reliably without any special requirements for workers and storage facilities.

  In order to solve the above-mentioned problems, a gas cylinder unsealing device includes a body portion provided with a ball hole formed through a side tube, a ball escape groove, and rotates around the body portion as a rotation axis. A rotating ring inserted with the body portion inward so that it can move along the longitudinal direction of the body portion, one end fixed to the body portion, and the other end forming a gas cylinder mounting port, the body portion side A cylinder adapter in which a sealing plate is disposed in the vicinity of the end of the body, a spring portion that is inserted into the body portion and is locked to a spring stop portion of an inner wall end of the body portion, and the spring portion. A cutter unit that is mounted between the sealing plate and includes a pin portion with a sharp tip that is biased toward the sealing plate by the force of the spring portion, and the cutter unit and the cylinder adapter. Located between the pin part and the force by the force from the spring part A ball that restricts contact with the stop plate, and a ring that is spirally disposed along the outer periphery of the rotating ring, one end is fixed to the body portion, and the other end is fixed to the rotating ring and expands and contracts. A driving portion, and when the rotating ring rotates according to the reduction of the ring driving portion and the ball escape groove and the ball hole face each other, the ball escapes into the ball escape groove, and the cutter portion The restriction | limiting of the movement to the said sealing board side is cancelled | released, It is characterized by the above-mentioned.

  According to the present invention, special requirements are not required for workers and storage facilities, and it can be opened easily and reliably in use.

It is a perspective view of the cylinder opening apparatus with which the gas cylinder concerning this embodiment was mounted | worn. It is a disassembled perspective view of a cylinder opening device. It is a figure which shows the internal structure etc. of a cylinder opening apparatus, (a) is a side view, (b) is AA sectional drawing in (a). It is a figure which shows the state before opening operation of a cylinder opener, (a) is a side view, (b) is BB sectional drawing in (a), (c) is CC sectional drawing in (a). . It is a figure which shows the state after opening of a cylinder opening device, (a) is a side view, (b) is DD sectional drawing in (a), (c) is EE sectional drawing in (a). It is a perspective view of the cylinder opening apparatus concerning 2nd Embodiment. It is a block diagram of the cylinder opening apparatus applied to description of related technology, (a) is sectional drawing before opening, (b) is sectional drawing after opening.

  An embodiment of the present invention will be described. FIG. 1 is a perspective view of a cylinder opening device 2A equipped with a gas cylinder according to this embodiment, and FIG. 2 is an exploded perspective view of the cylinder opening device 2A. 3 is a diagram showing the internal structure and the like, (a) is a side view, and (b) is an AA cross-sectional view in (a).

  The cylinder opening device 2 </ b> A includes a body unit 11, a rotating ring 12, a ring driving unit 13, a cutter unit 14, a spring unit 15, a ball 16, and a cylinder adapter 17.

  The body part 11 is a cylindrical member, one end of which forms a body base part 11a, the other end forms a gas discharge part 11b, and the guide part 11c is connected to the body base part 11a and the gas discharge part 11b. Yes.

  The outer diameter of the trunk base 11a is appropriately larger than the outer shape of the guide 11c, and a step surface 11d between the trunk base 11a and the guide 11c is formed. The step surface 11d restricts the rotation ring 12 from moving to the gas cylinder 10 side. That is, the rotating ring 12 is restricted from moving to the gas cylinder side by contacting the step surface 11d.

  A pin hole 11e for fixing one end of the ring drive part 13 is formed in the body base part 11a, and a stopper mounting hole 11f is formed at an end part of the guide part 11c on the gas discharge part 11b side. The inner diameter of the gas discharge part 11b is formed to be appropriately smaller than the inner diameter of the guide part 11c so that the spring part 15 does not come off from the gas discharge part 11b. A portion having a size appropriately smaller than the inner diameter of the guide portion 11c is referred to as a spring stopper 11g. Further, a ball hole 11h for receiving the ball 16 is formed in the guide portion 11c in the vicinity of the body base portion 11a.

  The rotating ring 12 is a cylindrical member having an inner diameter that fits into the guide portion 11c, and a pair of ball escape grooves 12a are formed inside the end portion on the stepped surface 11d side. Further, a pin hole 12b for fixing one end of the ring driving unit 13 is formed outside the end of the rotating ring 12 on the gas discharge unit 11b side, and a stopper is provided at a position rotated approximately 90 degrees at the same end. A stopper notch 12c with which the pin 12d is engaged is formed.

  The ring drive unit 13 is a linear or belt-like member formed of a shape memory alloy such as a Ti—Ni alloy. One end of the ring drive unit 13 is press-fitted (or screwed) into the pin hole 11e by the pin 13a, and the other end is press-fitted (or screwed) into the pin hole 12b by the pin 13b, and spirals along the outer surface of the rotating ring 12. It is extended in the shape. The ring driving unit 13 is provided with a power source (not shown) so that a current can flow.

  The spring part 15 is formed by a coil spring and is inserted into the body part 11. At this time, the spring portion 15 is inserted until it is regulated by the spring stop portion 11g.

  The cutter portion 14 includes a pin portion 14a having a sharp tip, a cutter base portion 14b that forms a support portion for the pin portion 14a, and a flow path (gas passage) 14c when gas from the gas cylinder 10 flows to the gas discharge portion 11b. Note that FIG. 2 also shows an enlarged view of the cutter unit 14 in which the viewpoint is changed in order to facilitate the understanding of the configuration of the gas passage 14c. As can be seen from the enlarged view of FIG. 2, the surface (ball contact surface) 14d of the cutter base portion 14b connected to the pin portion 14a is a tapered surface. The cutter unit 14 is inserted into the body unit 11 after the spring unit 15 is inserted into the body unit 11.

  The ball 16 is accommodated in the ball hole 11h. The ball hole 11h is a through hole having a diameter for accommodating the ball 16, but its height (corresponding to the thickness of the guide portion 11c) is smaller than the diameter of the ball 16. The ball 16 contacts the ball contact surface 14d and receives the force of the spring portion 15. Accordingly, since the ball contact surface 14 d is a tapered surface, the ball 16 receives a radial force in the body portion 11. Hereinafter, this radial force is referred to as a ball escape force.

  The cylinder adapter 17 is a substantially cylindrical member provided with a mounting opening to which the cylinder 10 is attached, and a sealing plate 17a is attached to one end thereof in close contact. Then, it is fitted into the body base 11a.

  Next, the operation of the cylinder opening device having such a configuration will be described with reference to FIGS. 4A and 4B show a state before the opening operation of the cylinder opening device, in which FIG. 4A is a side view, FIG. 4B is a sectional view taken along line BB in FIG. 4A, and FIG. 4C is a sectional view taken along line CC in FIG. It is. 5 shows a state after opening, (a) is a side view, (b) is a DD cross-sectional view in (a), and (c) is an EE cross-sectional view in (a).

  First, as shown in FIG. 4A, the gas cylinder 10 is attached to the cylinder adapter 17. At this time, the ring driving unit 13 is in a cold state. The cold state is a state in which the ring drive unit 13 is energized at least at the time of opening to increase the temperature, but is cooled with respect to the temperature state at this time. In the following description, the ring driving unit 13 is assumed to be in an extended state in the cold state, and this state is referred to as an extended state.

  When the ring drive unit 13 is in the extended state, the stopper pin 12d of the rotating ring 12 is engaged with the stopper notch 12c (see FIG. 4B). Therefore, even if the operator touches the rotating ring 12 carelessly, the rotating ring 12 does not rotate.

  Before such opening, the ball escape groove 12a of the rotating ring 12 is displaced from the ball hole 11h of the body portion 11. For this reason, the ball 16 is positioned on the center side of the body portion 11 and separates the cutter portion 14 from the gas discharge portion 11b (see FIG. 4C). That is, the ball 16 is positioned between the cutter unit 14 and the cylinder adapter 17, and the pin portion 14 a of the cutter unit 14 urged toward the sealing plate 17 a by the spring unit 15 contacts the sealing plate 17 a. It is supposed not to.

  When opening the ring, the ring drive unit 13 is energized. As a result, the ring driving unit 13 generates heat due to the electrical resistance and the temperature rises. When the temperature of the ring drive unit 13 is about 100 ° C. or higher, which is the shape recovery temperature (deformation temperature) of the shape memory alloy, the crystal structure of the shape memory alloy changes from the martensite phase to the austenite phase. This phase transformation returns the shape memory alloy to the original memorized shape (contracted state).

  One end of the ring driving unit 13 is fixed to the body base 11 a and the other end is fixed to the rotating ring 12, and the ring driving unit 13 is arranged in a spiral around the rotating ring 12. For this reason, when the ring driving unit 13 contracts, the rotating ring 12 rotates while being pulled in the direction of the trunk base 11a.

  At this time, since the stopper notch 12c of the rotating ring 12 is engaged with the stopper pin 12d, the rotation of the rotating ring 12 is restricted by the stopper pin 12d immediately after energization of the ring driving unit 13 is started. . When the ring drive unit 13 contracts in this state, the contraction force at that time acts to pull the rotating ring 12 in the direction of the body base 11a, and the engagement between the stopper notch 12c and the stopper pin 12d is released. (See FIG. 5 (b)).

  When the engagement between the stopper notch 12c and the stopper pin 12d is released, the rotating ring 12 is pulled in the direction of the trunk base 11a while rotating.

  Then, when the ball escape groove 12a of the rotating ring 12 rotates to a position facing the ball hole 11h of the body portion 11, the ball 16 which is in contact with the ball contact surface 14d and receives force on the rotating ring 12 side is Move (escape) to the escape groove 12a (see FIG. 5C).

  Thereby, the movement restriction | limiting to the sealing plate 17a side of the cutter part 14 is cancelled | released by the ball | bowl 16, and the sealing plate 17a is broken through by the pin part 14a. That is, the gas cylinder 10 is opened. The gas from the opened gas cylinder 10 flows out from the gas discharge part 11b through the gas passage 14c of the cutter part 14.

  In addition, the ring drive part 13 was set as the structure wound around the rotating ring 12 spirally. This is due to the following reason. That is, the contraction of the ring drive unit 13 is caused as a result of the temperature rise due to self-heating when the ring drive unit 13 is energized. The shrinkage rate per unit length of the ring driving unit 13 is determined by a material such as resistivity.

  The main purpose of the ring drive unit 13 is to rotate the rotating ring 12, and the required amount of contraction differs depending on the outer diameter of the rotating ring 12. However, the necessary amount of contraction can be easily obtained by adjusting (changing) the winding line density when the ring driving unit 13 is spirally wound around the rotating ring 12. Therefore, it is not necessary to change the material or structure of the ring driving unit 13, and it is possible to easily cope with the rotating ring 12 having various outer diameters only by adjusting the winding line density.

  In addition, since the ring drive unit 13 is wound in a spiral shape, a force for moving the rotating ring 12 in a direction parallel to the axis of the rotating ring 12 and a force for rotating the rotating ring 12 are generated at the time of contraction. Therefore, there is an advantage that the stopper of the rotating ring 12 can be released simultaneously by the contraction of the ring driving unit 13.

  As described above, it is possible to provide a cylinder opening device that can be opened easily and reliably without any special requirements for workers and storage facilities.

Second Embodiment
Next, a second embodiment of the present invention will be described. In addition, about the same structure as 1st Embodiment, description is abbreviate | omitted suitably using the same code | symbol.

  In the first embodiment, the rotating ring 12 is configured to energize and contract the ring driving unit 13 formed of a shape memory alloy. On the other hand, in the present embodiment, the ring driving unit 13 is formed by a coil spring and a holding unit for restricting the contraction of the coil spring is provided.

  FIG. 6 is a perspective view of a cylinder opening device 2B according to the present embodiment. Although the internal structure of the cylinder opening device 2B is the same as that of the first embodiment, the ring driving unit 13 is formed by a coil spring, and a holding unit 20 for restricting the contraction of the coil spring is provided.

  And if it supplies with electricity to the heater 22 from the power supply which is not shown in figure, the holding material 21 will melt by the heat | fever of this heater 22, and the rotating ring 12 will move to the trunk | drum base 11a side, rotating. As a result, the ball escape groove 12a of the rotating ring 12 rotates to a position facing the ball hole 11h of the body portion 11, and comes into contact with the ball contact surface 14d to receive the force on the rotating ring 12 side. Moves (escapes) to the ball escape groove 12a (see FIG. 5C).

  Then, the movement restriction of the cutter portion 14 toward the sealing plate 17a is released by the ball 16, and the sealing plate 17a is broken through by the pin portion 14a. That is, the gas cylinder 10 is opened. The gas from the opened gas cylinder 10 flows out from the gas discharge part 11b through the gas passage 14c of the cutter part 14.

  As described above, it is possible to provide a cylinder opening device that can be opened easily and reliably without any special requirements for workers and storage facilities.

2A, 2B Cylinder opening device 10 Gas cylinder 11 Body part 11a Body base part 11b Gas discharge part 11c Guide part 11d Step surface 11e Pin hole 11f Stopper mounting hole 11g Spring stop part 11h Ball hole 12 Rotating ring 12a Ball escape groove 12b Pin hole 12c Notch for stopper 12d Stopper pin 13 Ring drive part 13a, 13b Pin 14 Cutter part 14a Pin part 14b Cutter base part 14c Gas passage 14d Ball contact surface 15 Spring part 16 Ball 17 Cylinder adapter 17a Sealing plate 20 Holding part 21 Holding material 22 heater

Claims (6)

A body portion provided with a ball hole formed through the side tube;
A rotation ring that includes a ball escape groove, is rotated with the body portion as a rotation axis, and can be moved along the longitudinal direction of the body portion;
A cylinder adapter in which one end is fixed to the body part, the other end forms a mounting opening for a gas cylinder, and a sealing plate is disposed in the vicinity of the end part on the body part side;
A spring portion inserted into the body portion and locked to a spring stop portion of the inner wall end portion of the body portion;
A cutter part that is mounted between the spring part and the sealing plate and includes a pin part having a sharp tip that is biased toward the sealing plate by the force of the spring part;
A ball that is positioned between the cutter unit and the cylinder adapter, and that regulates contact between the pin unit and the sealing plate by a force from the spring unit;
A ring driving portion disposed in a spiral shape along the outer periphery of the rotating ring, one end fixed to the body portion, and the other end fixed to the rotating ring and extending and contracting;
When the rotating ring rotates in accordance with the reduction of the ring driving portion and the ball escape groove and the ball hole face each other, the ball escapes into the ball escape groove and moves toward the sealing plate side of the cutter portion. The gas cylinder opening device characterized by canceling the restriction of movement of the gas cylinder. The gas cylinder opening device according to claim 1,
A stopper pin provided in the body part;
A stopper notch that is formed on the rotating ring and restricts the rotation of the rotating ring by engaging the stopper pin;
When the ring drive portion contracts, the rotation ring, whose rotation is restricted by the engagement between the stopper pin and the stopper notch, moves to the sealing plate side, and the stopper pin and the stopper notch The gas cylinder opening device characterized by releasing the engagement. The gas cylinder opening device according to claim 1 or 2,
The gas cylinder opening device according to claim 1, wherein the ring driving unit is made of a shape memory alloy that is shrunk due to an increase in temperature when energized. The gas cylinder opening device according to claim 1 or 2,
The ring driving part is formed by a coil spring installed in an extended state, and
A gas cylinder unsealing device comprising: a holding material that maintains an extended state of the coil spring; and a heater that generates heat when energized and melts the holding material. A gas cylinder opening device according to any one of claims 1 to 4,
The gas cylinder unsealing device according to claim 1, wherein a surface of the cutter portion with which the ball abuts is a tapered surface that forms a ball abutting surface and pushes the ball toward the barrel wall of the body portion. A gas cylinder opening device according to any one of claims 1 to 5,
A gas cylinder unsealing device, wherein a plurality of cuts are formed in the cutter portion in an axial direction of the body portion to form a gas passage of gas released by unsealing.

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