JPH0450165Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a method for inflating inflatable lifesaving devices such as inflatable life rafts installed on ships, etc., safely and quickly in the event of a maritime disaster. It is related to the device.

[Conventional technology]

FIG. 3 is a sectional view showing a conventional charging device.
In the figure, 1 is a main body having an air supply path 2 from an air supply source to an inflatable life preserver such as an inflatable life raft, 3 is an actuator provided in this main body, and 4 is a cam that engages with this actuator. , 5 is an operating cable that rotates the operating ring 3 and the cam 4, 6 is a lever that is pushed down along the curved surface of the cam 4 by the rotation of the operating ring 3 and the cam 4, 7 is an O-ring, and 8 is a valve that is pushed down by the lever 6. , 9 is a spring for bringing this valve into close contact with the main body 1, 10 is a gas cylinder as an air supply source, 11 is an air supply pipe that supplies gas to the inflatable life preserver, 12 is a lid of the rotation mechanism of the main body 1, and 13 is a A set screw 14 fixes the lid to the main body 1, and a set screw 14 fixes the lid 12 to the main body 1.

The conventional air charging device is constructed as described above, and by pulling the operating cable 5 upward, the operating cable 3 is released.
The cam 4 rotates, and the lever 6 is pushed down along the curved surface of the cam 4, thereby opening the valve 8, and the gas in the cylinder 10 is supplied to the life preserver from the air supply pipe 11 through the air supply path 2. Ru.

[Problems to be solved by the invention] In the conventional air filling device as described above, the rotation mechanism is changed to an up-and-down mechanism, so if either one is damaged, the valve will not open. Furthermore, since the structure is complex and large parts are required, it is difficult to reduce the size and weight, and it is also difficult to replace parts.

This idea was made to solve these problems; it has a simple structure and operation that allows the air supply path to be opened, has fewer breakdowns, is easy to replace parts, and can be made smaller and lighter. The purpose is to provide a charging device.

[Means to solve the problem]

The inflating device of this invention includes a main body having an air supply path from an air supply source to an inflatable life preserver, and a bottomed body that is reciprocally movable so as to come into contact with a seat surface provided in the air supply path. an operating cylinder, a first spring that presses the bottom of the operating cylinder in a direction to press the seat surface, and an operating shaft that is reciprocatably provided within the operating cylinder and has an operating part protruding outside the main body; A second spring is inserted between the actuating cylinder and the operating shaft to press the actuating cylinder against the seat surface and in a direction that causes the operating part to protrude outside the main body; a ball provided movably between the outer surfaces of the operating shaft; a locking portion formed on the inner surface of the main body to prevent the ball from moving in the direction of pressing the first spring; and the operating shaft. A ball accommodating portion formed on the operating shaft side is provided to accommodate the ball when the ball is pushed in.

[Effect]

In the charging device of this invention, when the operating part of the operating shaft protrudes outside the main body, the ball is sandwiched between the inner surface of the main body and the outer surface of the operating shaft, and the ball is held by the locking part formed on the inner surface of the main body. Since it is locked, the operating cylinder remains pressed against the seat surface of the air supply path, and the air supply path is blocked. When the operating portion of the operating shaft is pressed in this state, the second spring is compressed and the operating shaft is pushed in, making it easier for the ball to enter the ball accommodating portion on the operating shaft side. At this time, the actuating cylinder is pushed by the gas pressure from the air supply source, so the ball enters the ball accommodating portion and is released from the locking portion. Therefore, the actuating tube compresses the first spring using gas pressure and retreats, opening the air supply path and supplying gas from the air supply source to the inflatable life preserver through the air supply path, filling the life preserver. Inflate.

〔Example〕

FIG. 1 is a sectional view showing an embodiment of this invention, and FIG. 2 is a sectional view showing its operating state. In the figures, the same reference numerals as in FIG. 3 indicate the same or corresponding parts. 21 is a seat surface provided in the air supply path 2 of the main body 1; 22 is a bottomed operating cylinder provided so as to be able to reciprocate within the operating space 23 of the main body 1 so as to come into contact with this seat surface; It has a gasket 24 at the bottom that comes into contact with 21. 25 is a first spring that presses the bottom of the actuating cylinder 22 in the direction of pressing it against the seat surface 21; a lid 26 provided at the opening of the actuating space 23;
Supported by. Reference numeral 27 denotes an operating shaft reciprocably provided within the operating cylinder 22, and an operating portion 28 is provided so as to protrude outside the main body 1 through the lid 26. Reference numeral 29 denotes a second spring provided between the operating barrel 22 and the operating shaft 27, and is provided to press the operating barrel 22 against the seat surface 21 and to push the operating section 28 in a direction to project outside the main body 1. . 3
0 is a communication hole provided in the operating cylinder 22, and 31 is a ball inserted into the communication hole, which is movable between the inner surface of the main body 1 and the outer surface of the operating shaft 27. Reference numeral 32 denotes a locking portion formed on the inner surface of the main body 1 to prevent the ball 31 from moving in the direction of pressing the first spring 25, and is formed by a conical inclined surface. 33 is the operating shaft 2 so as to accommodate the ball 31 when the operating shaft 27 is pushed in.
The ball accommodating portion is formed on the 7 side and is formed by a conical inclined surface facing the locking portion 32. Reference numeral 34 denotes a gasket inserted between the inner surface of the main body 1 and the outer surface of the operating cylinder 22 to prevent gas from flowing out into the opening of the operating space 23. 1st
The spring 25 is set to a spring constant smaller than the gas pressure of the air supply source, and the second spring 29 is set to a spring constant corresponding to the set pressure at which the operating shaft 27 can be pushed.

In the charging device configured as above,
When the operating portion 28 of the operating shaft 27 protrudes outside the main body 1, the ball 31 is connected to the inner surface of the main body 1 and the operating shaft 27.
The actuating cylinder 2
2 remains pressed against the sheet surface 21 of the air supply path 2, and the air supply path 2 is blocked. When the operating portion 28 of the operating shaft 27 is pressed from this state, the second spring 2
9 is compressed and the operating shaft 27 is pushed in, making it easier for the ball 33 to enter the ball accommodating portion 33 on the operating shaft 27 side. At this time, the cylinder 10 which is the air supply source
Since the actuating cylinder 22 is pushed by the gas pressure applied in the direction A, the ball 31 enters the ball accommodating portion 33 and is released from the locking portion 32 . Therefore, the actuating cylinder 22 compresses the first spring 25 by gas pressure and retreats, opening the air supply path 2 and allowing gas to flow into the cylinder 1.
Air is supplied to the inflatable life preserver from the air supply pipe 11 through the air supply path 2 from 0, and the life preserver is filled with air and inflated.

In addition, in the above explanation, the main body 1, the actuating cylinder 2
2. The shape, structure, etc. of the operating shaft 27 etc. are not limited to those shown in the drawings, but can be changed. Furthermore, the present invention is applicable not only to inflatable life rafts, but also to inflatable life preservers such as life jackets.

[Effects of the invention] According to this invention, the actuating cylinder is locked by a ball, and the ball is moved by the operating shaft to move the actuating cylinder backward, so the air supply path can be opened with a simple structure and operation. It has the following advantages: it has fewer failures, easy parts replacement, and can be made smaller and lighter.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of this invention, FIG. 2 is a sectional view showing its operating state, and FIG. 3 is a sectional view of a conventional air filling device. In each figure, the same reference numerals indicate the same or corresponding parts, 1 is the main body, 2 is the air supply path, 21 is the seat surface, 2
2 is an operating cylinder, 25 is a first spring, 27 is an operating shaft,
28 is an operating section, 29 is a second spring, 30 is a communication hole, 31 is a ball, 32 is a locking section, and 33 is a ball accommodating section.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A main body having an air supply path from an air supply source to an inflatable life preserver, and a main body provided so as to be able to reciprocate so as to come into contact with a seat surface provided in the air supply path. a bottomed actuating tube; a first spring that presses the bottom of the actuating tube in a direction to press the seat surface; and an operating shaft that is reciprocably provided within the actuating tube and has an operating portion that protrudes outside the main body. A second spring is inserted between the actuating cylinder and the operating shaft to press the actuating cylinder against the seat surface and in a direction that causes the operating part to protrude outside the main body; a ball provided movably between the inner surface and the outer surface of the operating shaft; a locking portion formed on the inner surface of the main body to prevent the ball from moving in the direction of pressing the first spring; An air filling device comprising: a ball accommodating portion formed on the operating shaft side so as to accommodate the ball when the operating shaft is pushed in. (2) Utility model registration claim 1, characterized in that the first spring has a spring constant that is smaller than the pressure of the air supply source, and the second spring has a spring constant that allows the operating shaft to be pushed. charging device.