JPH0712700U - Cylinder opening device - Google Patents

Abstract

(57) [Abstract] [Purpose] If the protrusion and the cutter body are molded separately, the assembling property will be reduced, the workability at the time of molding will be reduced, and if the integral molding is performed, high precision machining Higher cost is solved, workability and workability are improved, and cost is reduced. In a cylinder opening device for opening a cylinder by simultaneously opening holes by a cutter 20 in a sealing plate 2 that seals the openings of a plurality of cylinders 1, a protrusion of the cutter 20 has a hollow cylindrical shape. Void 16 with a part of the peripheral surface open
By forming a spring pin 16 having elasticity in the radial direction by extending a in the axial direction, the spring pin 16 is formed by obliquely cutting it so that its tip has an acute angle.
A pin holding hole 18 for press-fitting and fixing a projection composed of the spring pin 16 in the cutter body 17 of 0 with the sharp tip of the projection facing the sealing plate 2 and the pin holding hole 18 And a gas vent hole 19 having a smaller diameter than the pin holding hole 18 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cylinder opening device that is mounted on an ocean sensor or the like and opens a gas-filled cylinder when driving a float for floating a floating body above the sea surface.

[0002]

[Prior art]

 A conventional cylinder opening device will be described based on Japanese Utility Model Laid-Open No. 62-24199. 6 is a front sectional view showing a state before the operation of the conventional cylinder opening device, FIG. 7 is a horizontal sectional view showing the same state, and FIG. 8 is a front sectional view showing the state before and after the operation of the cylinder opening device. 9 is a horizontal sectional view of the same state.

In the figure, reference numeral 1 denotes a cylinder having gas inside, and here, a structure is provided with two cylinders 1. This is because the ocean sensor in recent years has become more complicated and heavier, so the float for giving buoyancy to the levitation part of this ocean sensor also needs to be large, and as a result, gas is supplied to the float. This is because multiple cylinders are also used.

Reference numeral 2 denotes a sealing plate that seals the opening of the cylinder 1 and seals the gas in the cylinder 1 from being released. Reference numeral 3 is an electric ignition type squib, and 4 is a lead wire for supplying electricity to the squib 3, which explodes due to the supply of electricity by the lead wire 4 to operate a piston to be described later.

Reference numeral 5 denotes a substantially cylindrical base, and the plurality of cylinders 1 are fixed to one side (the left side in the drawing) of the closed side by screwing the respective opening sides. There is. Reference numeral 6 denotes a hollow portion formed inside the base 5, and inside the hollow portion 6, there is provided a cutter 7 which is movable along the inner peripheral surface of the hollow portion 6 in the cylinder 1 direction. It is installed.

The cutter 7 is formed on one side surface of the cutter body 7 a having a shape corresponding to the inner peripheral surface of the cavity 6 on the cylinder 1 side, that is, on the surface facing the sealing plate 2 provided on the cylinder 1. Cylindrical protrusions 8 for making holes in the sealing plate 2 of the cylinder 1 are fixed by projecting in the direction of the sealing plate 2, and the protrusions 8 keep the gas in the cylinder 1 in the center thereof. It has a gas vent hole 8a for venting.

Further, a piston 9 accommodating the squib 3 is in contact with the center of the other surface side of the cutter body 7 a, and the piston 9 is driven by the action of the squib 3. Reference numeral 10 denotes a closing plate attached so as to close the other side surface (the right side surface in the drawing) of the opening side of the base 5, and the closing plate 10 has a cutter body of the cutter 7. A gas supply hole 11 is formed at a position corresponding to the position of the projection 8 fixed to 7a so as to release the gas in the cylinder 1 that comes out of the projection 8 and supply it to a float (not shown). .

Reference numeral 12 denotes a case which is screwed and fixed to the center of the closing plate 10 and is attached to the other side surface side of the base 5 through the closing plate 10, and the piston 9 is slidably accommodated therein. ing. The tip surface of the case 12 is in contact with the other surface of the cutter 7 in the same manner as the piston 9, and holds the cutter 7 at a predetermined position in the hollow portion 6. Further, a small hole is provided on the rear end surface side of the case 12, and the lead wire 4 of the squib 3 housed in the piston 9 is drawn out to the outside through the small hole.

Reference numeral 15 denotes a spring as an urging means that constantly urges the cutter 7 in a direction to separate it from the sealing plate 2. In the state before the operation, the sealing plate 2 and the cutter 7 are separated from each other. Alternatively, at least the contact state is maintained. The operation of the cylinder opening device having the above-described configuration will be described below. First, in the state shown in FIGS. 6 and 7, that is, in the state where the tip of the projection 8 attached to the cutter body 7a of the cutter 7 is separated from or abuts the sealing plate 2 by the urging force of the spring 15. When the lead wire 4 of the squib 3 is connected to a power source (not shown), the squib 3 explodes.

The piston 9 is pushed by the pressure of the explosion of the squib 3, and moves inside the case 12 to the cylinder 1 side as shown in FIGS. 8 and 9. The cutter 7 is pushed by the operation of the piston 9, and the cutter 7 is moved integrally with the piston 9 in the same direction, that is, in the cylinder 1 direction while resisting the urging force of the spring 15. As a result, the projection 8 of the cutter 7 pierces the sealing plate 2 of the cylinder 1 which is arranged to face the sealing plate 2, and a hole is formed in the sealing plate 2. Gas is discharged from this and the inside of the cylinder 1 through the gas vent hole 8a of the projection 8, and the released gas escapes to the gas supply hole 11 through the gas supply hole 11 to float (not shown). And so on.

[0011]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, the projection 8 for making a hole in the sealing plate 2 of the cylinder 1 is formed separately from the cutter body 7a of the cutter 7, and the cutter body 17 is assembled at the assembly stage. It has a structure in which the cutter 7 is attached to the. However, in order to attach the protrusion 8 to the cutter body 17 by screwing, both the protrusion 8 and the cutter body 17 need to be threaded at their respective joints, which causes a problem of high cost. was there.

Further, when the projection 8 is integrally formed without being separated from the cutter body 17, extremely accurate machining is required to form the gas vent hole which is required to be provided in the projection. However, even in this case, there is a drawback that the cost is increased, and the conventional structure was not a satisfactory technique. The present invention was made in order to solve the above-mentioned problems, and by forming the projection and the cutter body as separate bodies, the ease of assembly is not reduced, and when the separate bodies are used, the assembly is easy. It eliminates the high cost that was required for high-precision machining due to screw processing and formation of gas vent holes in the case of integral molding, and workability and workability are good, and cost reduction can be realized. It is an object of the present invention to provide an excellent cylinder opening device.

[0013]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a plurality of cylinders whose openings are sealed by a sealing plate, and a base having a plurality of cylinders protruding and fixed at one end in a predetermined arrangement and having a cavity inside. A cutter provided with a protrusion projecting in a position corresponding to the position of the sealing plate on a surface of the cutter body that is movable in the cavity direction of the base in the cylinder direction, the surface facing the sealing plate; An urging means for constantly urging the cutter in a direction away from the sealing plate, a piston connected to the cutter, and an electric ignition type squib housed in the piston are provided, and the piston is driven by the explosion pressure of the squib. In the cylinder unsealing device in which the cutter is moved in the cylinder direction to open the cylinder by opening a hole in each of the sealing plates by the projection provided on the cutter, the projection is provided on one side of the hollow cylindrical peripheral surface. Department A spring pin, which has elasticity in the radial direction by forming an open void extending in the axial direction, is formed by obliquely cutting it so that its tip has an acute angle. A pin-holding hole for press-fitting and fixing a protrusion made of a spring pin such that an acute-angled tip of the protrusion is opposed to the sealing plate, and is connected to the pin-holding hole and has a diameter smaller than that of the pin-holding hole. It was decided to provide a gas vent hole.

[0014]

[Action]

 With the above configuration, when the spring pin is inserted into the pin holding hole of the cutter body and press-fitted until it hits the step with the gas vent hole, the spring pin, due to its elasticity, faces the cutter body sealing plate. It is fixedly held in a state of projecting at a right angle with respect to, thereby forming a protrusion of the cutter. Then, when the cutter is housed in the hollow portion of the base so as to be movable along the inner peripheral surface of the hollow portion, the cylinder opening device of the present invention is assembled.

In order to operate such a cylinder unsealing device, first, the biasing means is used to bring the state of the sharp tip end of the cutter projection into a state in which it is separated from the sealing plate or is in contact with the sealing plate. The cutter is biased in a direction away from the sealing plate. By exploding the squib in this state, the pressure pushes the piston toward the cylinder. Since this piston is connected to the cutter, the cutter also moves together with the piston in the cylinder direction while resisting the urging force of the urging means, so that the tips of the spring pins protruding from the cutter body face each other. Break through the sealing plate placed and open a hole to open the cylinder.

Then, the gas in the cylinder escapes from the hole formed in the sealing plate, passes through the void portion of the spring pin and the hollow hole, and further passes through the gas vent hole connected to the pin holding hole. Are released to floats and the like.

[0017]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front sectional view showing a state before the operation of the cylinder opening device of the present embodiment, FIG. 2 is a horizontal sectional view of FIG. 1, and FIG. 3 is a main part showing a structure of a spring pin and a cutter used in FIG. Front and top views, FIG. 4 is an enlarged perspective view showing the structure of the spring pin, and FIG. 5 is a side sectional view of the essential parts showing the operating state when the structure shown in FIG. 1 is used.

In these figures, except for the spring pin 16 and the cutter 20 supporting the spring pin 16, the other components and the structure thereof are almost the same as those of the conventional example. Then, the description thereof will be omitted and the same reference numerals will be given to the following description. First, the structure of the spring pin and the cutter will be described with reference to FIGS. 3 and 4. In the figure, reference numeral 16 denotes a spring pin, which has a hollow cylindrical shape as shown in the figure, and is provided with a void portion 1a formed by opening a part of the circumferential surface along the axial direction with a predetermined gap. It has a curved shape, which gives elasticity in the radial direction. The spring pin 16 is obliquely cut so that its tip has an acute angle. When the spring pin 16 is pressed toward the sealing plate 2 by the acute angle portion, the sealing plate 2 is securely held. This is because it is possible to break through and make holes.

Reference numeral 17 denotes a cutter body that supports the spring pin 16, and the cutter body 17 has a pin holding hole 18 for supporting the spring pin 16 in an upright state. It is formed to a predetermined depth in the thickness direction, for example, to a depth of about half of the plate thickness as shown in the figure, and is further connected to the pin holding hole 18 and penetrates the cutter body 17. A gas vent hole 19 is formed. The inner diameter of the gas vent hole 19 is smaller than that of the pin holding hole 18, and a step portion is formed at the connecting portion with the pin holding hole 18.

The pin holding hole 18 has an inner diameter slightly smaller than the outer diameter of the spring pin 16, and the spring pin 16 is urged in the radial direction so that By making the diameter small, the spring pin 16 is held in the pin holding hole 18 by the force of restoring inside the pin holding hole 18 when it is inserted into the pin holding hole 18 having a small diameter. There is.

The spring pin 16 is a JIS-specified standard part formed in the state shown in FIG. 4, and is generally used when it is desired to set a pin on a plate or the like. As long as there is a hole for press-fitting the spring pin on the support member side, the spring pin can be used to stand up there by utilizing its vane property. With such a structure of the spring pin 16 and the cutter body 17, the spring pin 16 is inserted into the pin holding hole 18 formed in the cutter body 17, and its end portion is the bottom surface of the pin holding hole 18, That is, it is press-fitted until it abuts on the step portion connected to the gas vent hole 19. As a result, the spring pin 16 is press-fitted to a position approximately half the thickness of the cutter body 17, and is supported in a state of protruding at a right angle to the surface of the cutter body 17 facing the sealing plate 2. Thus, the cutter 20 of the present invention is constituted by this. As shown in FIGS. 1 and 2, the cutter 7 is housed and supported in a space 6 in a substantially cylindrical base 5 so as to be movable along the inner peripheral surface thereof. Other configurations are almost the same as the conventional example, as can be seen from the figure.

Here, the operation of the cylinder unsealing device having the above-mentioned configuration will be described with reference to FIGS. First, in the state shown in FIGS. 1 and 2, that is, in the state where the tip of the spring pin 16 attached to the cutter body 17 of the cutter 20 by the urging force of the spring 15 is separated from or abuts on the sealing plate 2. , The squib 3 is exploded by connecting the lead wire 4 of the squib 3 to a power source (not shown).

The piston 9 is pushed by the pressure of the explosion of the squib 3, and moves inside the case 12 to the cylinder 1 side as shown in FIG. The operation of the piston 9 pushes the cutter 20, and the cutter 20 moves in the same direction as the piston 9, in the same direction, that is, in the cylinder 1 direction while resisting the urging force of the spring 15. As a result, the tip of the spring pin 16 attached so as to project from the surface of the cutter 20 facing the sealing plate 2 pierces the sealing plate 2 of the cylinder 1 that is arranged to face the sealing plate 2. Make a hole in plate 2. By this hole, gas is released from the inside of the cylinder 1 through the void and the hollow hole of the spring pin 16 and further through the gas vent hole 19 formed in connection with the pin holding hole 18. Further, it is supplied to a float or the like (not shown) through a gas supply hole 11 provided on the rear end surface side of the base 5.

[0024]

[Effect of device]

 As described above, according to the present invention, in the cylinder opening device for opening the cylinder by simultaneously opening holes by the cutter in the sealing plate that seals the openings of the plurality of cylinders, A spring pin, which is provided with elasticity in the radial direction by providing a cavity that opens a part of the hollow cylindrical peripheral surface and extends in the axial direction, is cut diagonally so that the tip becomes an acute angle. And a pin holding hole for press-fitting and fixing a projection made of the spring pin on the cutter body of the cutter with the sharp tip of the projection facing the sealing plate. A gas vent hole having a smaller diameter than that of the pin holding hole is provided so as to be connected to the hole.

Thus, when assembling the spring pin as a protrusion into the cutter body, the spring pin can be easily inserted into the cutter body by press-fitting it into the pin holding hole provided in the cutter body by utilizing the elasticity of the spring pin. It can be fixed in a state of protruding at a right angle to the surface facing the sealing plate. And, by making this pin holding hole continuous with the gas vent hole with a smaller inner diameter, even if it is pushed out in the cylinder direction and pressed against the sealing plate, it is pushed out from the cutter body by the step portion of both. Instead, it is securely fixed to the cutter body, and the gas in the cylinder can be discharged reliably.

Further, the spring pin uses standard parts specified by JIS, and since it is sufficient to cut one end so as to form an acute angle, it is excellent in assemblability and workability, and at the same time, it is possible to open the cylinder at a low cost. A device can be provided.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a state before an operation of a cylinder opening device of the present embodiment.

FIG. 2 is a horizontal sectional view of FIG.

3A and 3B are front and top views of a main part showing the structure of a spring pin and a cutter shown in FIG.

FIG. 4 is an enlarged perspective view showing the structure of a spring pin.

5 is a side sectional view of an essential part showing an operating state when the structure shown in FIG. 1 is used.

FIG. 6 is a front sectional view showing a state before the operation of the conventional cylinder opening device.

FIG. 7 is a horizontal sectional view of the same state.

FIG. 8 is a front cross-sectional view of the cylinder unsealing device showing a state during and after operation.

FIG. 9 is a horizontal sectional view of the same state.

[Explanation of symbols]

 1 cylinder 2 sealing plate 3 squib 5 base 6 cavity 15 spring 16 spring pin 16a void 17 cutter body 18 pin holding hole 19 vent hole 20 cutter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Yasunori Nakata 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A plurality of cylinders whose openings are sealed by a sealing plate, a base having a plurality of cylinders projectingly fixed to one end in a predetermined arrangement and having a cavity therein, and a cavity of the base. A cutter provided with a protrusion projecting in a position corresponding to the position of the sealing plate on the surface of the cutter body that is movable in the cylinder direction facing the sealing plate, and the cutter from the sealing plate An urging means for constantly urging in a separating direction, a piston coupled to the cutter, and an electric ignition type squib housed in the piston are provided, and the cutter is pushed in the cylinder direction via the piston by the explosion pressure of the squib. In a cylinder unsealing device for moving a hole to make a hole in each of the sealing plates by a projection provided on the cutter to open the cylinder, the projection is a void portion in which a part of a hollow cylindrical peripheral surface is opened. Axially A spring pin having elasticity in the radial direction by being provided is formed by obliquely cutting the tip so that the tip has an acute angle, and a protrusion made of the spring pin is provided on the cutter body of the cutter. A pin-holding hole for press-fitting and fixing a sharp tip of the projection facing the sealing plate, and a gas vent hole connected to the pin-holding hole and having a diameter smaller than that of the pin-holding hole. A cylinder opening device characterized by being provided.