JPS634866Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application] The present invention relates to a gas tank, particularly a type of gas tank equipped with a special device for connecting to a gas piping terminal. Can be used as a gas tank that can be directly attached to gas piping.

[Prior art and its problems]

With conventional gas sticks, there are no restrictions on the mounting position, and since they are manufactured in a small size, the 6th
As shown in the figure, the piping end B protrudes from the wall surface A,
It can be installed even under the condition that it is located near the protrusion C, and there are many such installation modes.

However, recently, gas tanks have become equipped with overflow prevention valves as shown in Figure 7.
In this type of gas tank, due to the limitations of the built-in overflow prevention valve, the main body 1 must be installed so as to stand upright, as shown in the figure. Therefore,
In this type of gas tank which is attached to a horizontally protruding piping terminal B, the connecting portion 11 is arranged horizontally.

If an attempt is made to attach this gas tank to the piping terminal B by removing the existing gas tank shown in FIG. 6, the protruding portion C will become awkward due to its large rotation radius, making it impossible to install it.

Since gas tanks equipped with overflow prevention valves are highly safe, existing piping such as the one shown in Figure 6 is becoming a big problem as existing gas tanks are being replaced with this type of gas tank.

Technical Problem The present invention is designed to solve the problem of a gas tank in which the connecting part 11 is horizontal and the main body 1 is upright, even if there is a part protruding in the same direction as the gas pipe terminal near the gas pipe terminal. The object of the present invention is to enable a screw connection between the connecting portion 11 and the piping terminal while keeping the posture of the main body 1 constant.

Means The technical means of the present invention for solving the above technical problem is to
and an insertion cylinder portion 21 that fits into this in an airtight manner on the outer periphery.
and a connecting body 2 having a connecting threaded portion 22 at the other end, the insertion tube portion 21 and the tube portion 1
2, the cylinders are paired with each other, and a C-shaped elastic ring 3 is accommodated in an annular first groove 13 formed at the tip of the cylindrical part, and one end of the elastic ring is bent radially outward. The machine screw 1 is engaged with the through hole 23 formed at the bottom of the first groove, and the other end is screwed through the cylindrical part 12 in a direction perpendicular to the cylindrical part 12.
4, and on the other hand, a second groove 24 into which the elastic ring 3 fits and engages is provided on the outer periphery of the insertion cylinder portion 21, and when the machine screw 14 is tightened, the elastic ring 3 is inserted into the first and second grooves. The depths of the first and second grooves are adjusted so that when the elastic ring 3 is engaged with both grooves 13 and 24 and the machine screw 14 is loosened, the elastic ring 3 escapes from the second groove 24 over the entire area. This is what was set.

[Effect]

The above technical means of the present invention operates as follows.

Since the cylinder part 12 and the insertion cylinder part 21 are in a cylindrical pair, when the machine screw 14 is loosened, the elastic ring 3 comes off from the second groove 24, and the connecting body 2 can be removed.

Therefore, the connection screw portion 2 of the removed connection body
When connector 2 is screwed onto piping terminal B, only connector 2 is securely screwed and connected to the gas piping terminal.

Next, the insertion cylinder part 21 of the connecting body 2 is placed in a predetermined position, and the cylinder part 1 integrated with the main body 1 is inserted.
1 is externally fitted, the outer periphery is airtightly fitted, and the elastic ring 3 accommodated in the first groove 13 on the inner periphery of the cylindrical part 12 and the second groove 24 of the insertion cylinder part 21 match. Thereafter, when the machine screw 14 is tightened, the elastic ring 3 is tightened in the circumferential direction and is pressed into contact with the second groove 24, so that the cylindrical part 12 and the insertion cylindrical part 2
1 are fixed in a non-rotating state by this pressure contact force. Further, the elastic ring 3 is connected to the first and second grooves 1.
3 and 24, it is also prevented from coming off in the axial direction.

Therefore, the gas tank will be fixed in a fixed position with respect to the piping end.

〔effect〕

Since the present invention has the above configuration, it has the following unique effects.

Since the main body 1 of the gas kettle can be connected and fixed to the piping terminal in the position where the cylinder part 12 is externally fitted into the insertion cylinder part 21 without rotating the main body 1 of the gas kock, and since only the connecting body 2 is the threaded part, The radius of rotation during the installation work is significantly reduced, and even if there is a protrusion near the end of the pipe, a gas tank can be installed in which the main body 1 and the connecting portion 11 are perpendicular to each other.

〔Example〕

In the embodiment shown in FIGS. 1 to 5, an O-ring 2 is attached to the distal end side of the insertion tube 21 as the connecting body 2.
5, 25 are fitted externally, a second groove 24 is provided on the base end side, the middle part is a tool corresponding part having a hexagonal outer shape, and the other end is a connecting screw part 22.
It has a male thread and can be used when the piping terminal has a female thread. (See Figures 1 and 2.) On the other hand, in addition to the machine screw 14 that is in contact with the C-shaped elastic ring 3 as shown in Figure 4, there is also a machine screw 14 in the cylindrical part 12 at a certain distance in the circumferential direction. Lock screw 15
are screwed together, and as shown in Figure 5,
A third groove 16 is provided on the inner periphery of the tip of the cylindrical part 12, and a notch 18 is further formed in a part of the partition wall 17 between the end surface of the cylindrical part 12 and the third groove 16. .
Note that this notch is aligned with the lock screw 15 in the axial direction.

The second groove 16 is formed between the insertion cylinder part 21 and the cylinder part 12.
The lock screw 15 is used to mechanically fix the posture of the connecting body 2 and the main body 1 in a constant manner.

For this reason, the insertion tube portion 21 of the above-mentioned connector 2 is provided with a first recess 26 and a second recess 27 on its outer circumferential surface, as shown in Fig. 5, and a ball 28 is accommodated in the first recess 26 so that a part of the ball 28 protrudes in the radial direction.
When the fitting is performed in such a manner that the notch 18 and the fitting 8 are aligned,
The ball 28 comes into contact with the inner peripheral end of the side wall of the third groove 16. Furthermore, the distance between the first and second recesses 26, 27 is set to match the distance between the third groove 16 and the lock screw 15, so that in the inserted state, the tip of the lock screw 15 coincides with the second recess 27.

In this embodiment, as shown in FIG. 3, a through hole 23 for locking the bent piece 31 of the elastic ring 3, a machine screw 14, and a lock screw 15 are provided in alignment with the first groove 13. Because there is, the second
The recessed portion 27 will be bored within the second groove 24.

In the above embodiment, the connection body 2 is connected to the piping terminal B.
When screwing together, the posture of the main body 1 of the gas kettle can be determined in advance by the position of the ball 28.

Further, the cylindrical portion 12 of the main body 1 has a lock screw 16 and a second
Since it is mechanically locked by engagement with the recess 27, there is no risk of it slipping and rotating even if an external force is applied to the main body 1.

Furthermore, since the degree of fitting between the cylinder part 12 and the insertion cylinder part 21 is constant due to the relationship between the ball 28 and the third groove 16, the O-rings 25, 2 as sealing means
Since the position where the sealing member 5 contacts the inner circumferential surface of the cylindrical portion 12 is constant, poor airtightness due to variation in the contacting portion of the sealing means does not occur.

In addition, in the above embodiment, the connection threaded portion 2 of the connection body 2
Although 2 is a male thread, it may be a female thread, and in this case, it can be used when the piping end is a male thread.

[Brief explanation of drawings]

Fig. 1 is an external view of the embodiment of the present invention, Fig. 2 is a sectional view of its main parts, Fig. 3 is a Y-Y sectional view, Fig. 4 is an explanatory diagram of the elastic ring, and Fig. 5 is an XX cross-section. Figure, 6th
The figure is an explanatory diagram of a conventional gas tank installed, and Figure 7 is an explanatory diagram of a conventional gas tank equipped with an overflow prevention valve.
13...First concave groove, 14...Machine screw, 2...Connection body, 21...Insertion cylinder part, 22...Connection screw part, 2
3...Through hole, 24...Second groove, 3...Elastic ring, 31...Bending piece.

Claims (1)

[Scope of utility model registration request] In a gas tank where the connecting portion 11 is horizontal and the main body 1 is upright, the connecting portion 11 is provided with a cylindrical portion 12 integral with the main body 1, an insertion cylindrical portion 21 that fits into the cylindrical portion 12 in an airtight manner on the outer periphery, and at the other end. The connecting body 2 includes a connecting threaded portion 22, and the insertion tube portion 21
and the cylindrical part 12 are cylindrically paired with each other, and a C-shaped elastic ring 3 is accommodated in a first annular groove 13 formed at the tip of the cylindrical part, with one end of the elastic ring radially outward. The other end is bent to engage the through hole 23 formed at the bottom of the first groove, and the other end is brought into contact with a machine screw 14 that is screwed through the cylindrical part 12 in a direction perpendicular thereto. , a second groove 2 into which the elastic ring 3 is fitted and engaged with the outer periphery of the insertion cylinder portion 21;
4, and when the machine screw 14 is tightened, the elastic ring 3 engages with both the first and second grooves 13 and 24, and when the machine screw 14 is loosened, the elastic ring 3 engages with the second groove. The depths of the first and second grooves are set so that they escape from the groove 24 over the entire area.