KR102048484B1 - Fuse cock - Google Patents

Abstract

The present invention provides a fuse cock. The fuse cock comprises: a body part which is connected to a gas pipe; a hose connection part which is connected to a hose; an opening and closing ball which is disposed between the body part and the hose connection part, is formed with a gas through hole therein, and is rotated in a first direction or in a second direction opposite to the first direction such that the gas through hole communicates with or is blocked from the body part and the hose connection part; and a safety lock which is connected to the opening and closing ball, and, when a predetermined force is applied in the first direction so that the gas through hole becomes a shielded state, or when a force that is not at least smaller than the predetermined force is applied in the second direction and the safety lock rotates more than a predetermined angle in the second direction, is fixed without rotation even when the predetermined force is applied in the first direction so that the gas through hole is in an open state. Therefore, the present invention prevents incomplete opening and closing of the fuse cock.

Description

Fuse cock {FUSE COCK}

The present invention relates to a fusecock comprising a safety lock so that the fusecock is fully locked or open.

In general, the gas used in the home is supplied to a combustor such as a boiler or a gas stove through a pipe such as a propane gas container or a city gas, and in each household, a gas supply pipe for supplying gas to a combustor (gas stove, etc.) By installing an intermediate valve, when the user uses the combustor, the intermediate valve is opened and when not in use, the intermediate valve is closed to shut off the gas. However, fuse cocks have been developed to prevent the outflow of gas and prevent explosion and gas poisoning accidents when hoses are removed or cut from the combustor.

The fuse cock is to open and close the gas passage and is installed at the connection part of the pipe and the hose. These fusecocks do not work when the gas is combusted normally in the combustor, but if the hose is pulled out or cut off while the gas is in use, a fuse that cuts off the gas is activated to prevent an accident due to gas leakage. Can be. Specifically, when an excessively large amount of gas flows, the fuse blocks a hole through which gas in the fuse ball inside the fuse cock passes, thereby blocking the gas. However, the fuse may operate properly when the hole of the fuse ball is completely open, and may block the hole.

However, in the case of an incomplete opening or closing state in which the hole of the fuse ball is not completely opened or the shield is not completely shielded due to a user's carelessness or the like, the fuse cannot completely block the hole and gas leakage occurs. There is a problem that a safety accident such as a human life may occur due to the gas leakage accident.

Republic of Korea Patent Publication No. 10-1058469 (2011. 08. 16)

Embodiments of the present invention to provide a fuse cock provided with a safety lock device for preventing the incomplete opening and closing state of the fuse cock.

Moreover, it is for providing the fuse cock which automatically becomes fully locked even if a fuse cock is not fully locked by the user's carelessness.

In addition, it is to provide a fuse cock that can fix the locked state so that the locked state is not easily changed to the open state by an external physical force.

According to an embodiment of the present invention, the body portion is connected to the gas pipe; A hose connection portion connected to the hose; Is disposed between the body portion and the hose connection portion, a gas through hole is formed therein, so that the gas through hole communicates or is blocked with the body portion and the hose connection portion, the first direction or the opposite direction to the first direction Opening and closing ball rotated in the second direction; And a force connected to the opening / closing ball, wherein a predetermined force is applied in the first direction so that the gas through hole is shielded, or a force not less than at least smaller than the predetermined force is applied in the second direction. When rotated by a predetermined angle, it is fixed without being rotated in the first direction even if the predetermined force is applied to provide a fuse cock including a; safety locking device to open the gas through hole.

The safety locking device may be configured to apply the predetermined force in a third direction along a vertical direction so that the opening and closing ball rotates in the first direction so that the gas through hole is shielded or the opening and closing ball is The fuse cock may be provided to apply the force in a fourth direction opposite to the third direction so as to rotate in the second direction so that the gas through hole is opened.

The safety locking device may be connected to the opening / closing ball, and rotates the opening / closing ball by the predetermined angle in the first direction or the second direction, and the predetermined angle in the first direction or the second direction. Spun outer case; A gripping portion coupled to an upper side of the outer case; An inner case disposed inside the outer case and movable in the third direction or the fourth direction along a vertical direction; A body part disposed inside the inner case to guide movement of the inner case in the third direction or the fourth direction; And an elastic part disposed surrounding the outer circumferential surface of the body portion at a lower side of the inner case to apply the predetermined force to the inner case in the third direction.

In addition, the inner case is formed to protrude outward from the outer surface of the inner case, the engaging portion to control the movement in the third direction or the fourth direction of the inner case; Can be.

In addition, the outer case is guided to the engaging portion protruding outward, by adjusting the movement in the third direction or the fourth direction of the inner case, the first direction or the second direction of the opening and closing ball And a guide groove for fixing the rotation state to the guide groove, wherein the guide groove includes: a straight portion for pressing the locking portion in the fourth direction to fix the opening and closing ball rotated in the second direction; An inclined portion formed to be inclined upwardly from the straight portion to rotate the opening / closing ball in the first direction by a force applied from the elastic portion to the inner case in the third direction; And a fixing part which is formed to be inclined downward from the inclined part and stops the movement of the catching part at an upper end point of the inclined part to stop the opening and closing ball rotated at a predetermined angle in the first direction. A fusecock may be provided.

In addition, when the locking portion is located at any point of the area of the inclined portion, the locking portion is formed along the inclined portion by the predetermined force in the third direction applied from the elastic portion to the inner case. Moved in three directions, the outer case may be rotated in the first direction, the opening and closing ball may be provided in the fuse cock is rotated in the first direction.

In addition, the safety locking device, when the engaging portion is located in the straight portion, the inner case is moved downward along the third direction when the elastic portion is pressed, the gas through hole of the opening and closing ball is the body It is possible to provide a fuse cock that is open to communicate with the portion and the hose connection.

According to an embodiment of the present invention, a safety lock device for preventing an incomplete opening and closing state of the fuse cock may be provided.

In addition, even if the fuse cock is not completely locked, due to the carelessness of the user, it can be automatically locked completely.

In addition, the locked state can be fixed so that the locked state is not easily changed to the open state by an external physical force.

1 is a perspective view showing a fuse cock according to an embodiment of the present invention.
2 is a view showing an operating state of the opening and closing ball according to FIG.
Figure 3 is an exploded perspective view showing a safety lock device according to an embodiment of the present invention.
4 is a front view of a security lock device according to an embodiment of the present invention.
5 is a front view showing that the operating state of the safety lock according to FIG. 4 is changed.
6 is a cross-sectional view of the safety lock according to FIG. 4.
7 is a view showing a fixing part according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is only an example and the present invention is not limited thereto.

In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification.

The technical spirit of the present invention is determined by the claims, and the following embodiments are merely means for efficiently explaining the technical spirit of the present invention to those skilled in the art.

1 is a perspective view showing a fuse cock according to an embodiment of the present invention, Figure 2 is a view showing an operating state of the opening and closing ball according to FIG.

1 and 2, the fuse cock 1 according to an embodiment of the present invention is the body portion 10, the hose connecting portion 20, opening and closing ball 30, fuse 40, the operation handle 50 ) And a safety lock 60. The fuse cock 1 according to the embodiment of the present invention may include the safety lock device 60 to prevent the incomplete opening and closing state of the opening and closing ball 30. Specifically, in the process of locking and opening the fuse cock 1, the operation knob 50 is not completely locked or opened, so that the opening / closing ball 30 of the fuse cock 1 is not completely locked or completely Incomplete opening and closing state of the opening and closing ball 30 does not become an open state. In this case, a large accident such as a gas explosion occurs due to a problem such as a gas leakage accident. Therefore, the fuse cock 1 according to the present invention prevents such an incomplete opening and closing state to prevent a gas accident.

The body portion 10 is connected to the gas pipe, the hose connection portion 20 is connected to the hose. The body portion 10 and the hose connection portion 20 communicate with each other, so that gas may flow from the body portion 10 connected to the pipe to the hose connection portion 20.

In addition, the body portion 10 includes a ball stage connecting portion 111 in which the ball stage 31 to be described later may be located. Ball stage connecting portion 111 is formed to communicate with the outside.

Opening and closing ball 30 is disposed between the body portion 10 and the hose connecting portion 20, the gas through hole 301 is formed therein. For example, the gas through hole 301 may be formed in one direction along a diameter at the center of the opening and closing ball 30. The gas through hole 301 may be in communication with or blocked from the body portion 10 and the hose connecting portion 20 according to the rotation of the opening and closing ball 30. Specifically, the opening and closing ball 30 is rotated in the first direction or the second direction, the gas through hole 301 may be in communication with the body portion 10 and the hose connecting portion 20 or blocked. Here, the first direction may be clockwise, and the second direction may be counterclockwise. For example, when the opening and closing ball 30 rotates in the first direction, the gas through hole 301 is shielded from the body portion 10 and the hose connecting portion 20, and the opening and closing ball 30 rotates in the second direction. In this case, the gas through hole 301 may communicate with the body portion 10 and the hose connection portion 20.

In addition, a protrusion groove 302 is formed in the upper portion of the opening and closing ball 30 so that the ball base 31 is connected.

The ball stand 31 is connected to the opening and closing ball 30, it may be exposed to the outside through the ball stand connector 110 formed in the body portion (10).

Specifically, the fastening protrusion 311 is formed on the lower side of the ball base 31, the fastening protrusion 311 may be inserted into the projection groove 302 formed in the opening and closing ball (30). Therefore, the ball stage 31 can be fixed to the opening and closing ball (30). On the other hand, the ball stand 31 may be in a state inserted into the ball connector (110) to enable the origin rotation in the ball connector (110) in a fixed state with the opening and closing ball 30.

In addition, the upper portion of the ball rest 31 is protruded to the outside of the ball connecting portion 110, it is connected to the operating handle 50 or the safety lock device 60 can be rotated by rotation. For example, as shown in FIG. 1, the operation handle 50 may be fixed to the side surface of the ball rest 31.

When the gas supplied from the body portion 10 is excessively supplied to the hose connecting portion 20 side, the fuse 40 is moved to the hose connecting portion 20 side by the flow of gas, and thus the body portion 10 and the gas through hole. It is possible to shield between 301. Therefore, excessive gas flow can be blocked. Such a fuse may be a general fuse used in the art.

The operation handle 50 is a part that the user grips and rotates to lock and open the fuse cock 1. The operation handle 50 may be rotated in the first or second direction to rotate the opening and closing ball 30 by a predetermined angle in the first or second direction. For example, the preset angle may be 90 degrees. The operation handle 50 may be formed in a form to protect while surrounding the safety lock 60 to be described later.

Safety lock device 60 is connected to the opening and closing ball 30, it can prevent the incomplete opening and closing of the opening and closing ball (30). Specifically, the safety locking device 60 may induce the gas through hole 301 of the opening and closing ball 30 to be in a completely open state and a completely shielded state with the body portion 10 and the hose connection portion 20. . In addition, the safety locking device 60 may be fixed to the state in which the opening and closing ball 30 is rotated. Safety lock device 60 may be fixed to the ball rest 31 connected to the opening and closing ball (30).

As the safety lock device 60 is rotated in the first direction or the second direction, the opening and closing ball 30 may be rotated in the first direction or the second direction.

The safety locking device 60 may be connected to the opening / closing ball 30 through the ball base 31 to apply a predetermined force in the first direction so that the gas through hole 301 may be in a shielded state. In addition, when a force that is not at least smaller than the preset force in the second direction is applied and rotates more than the preset angle in the second direction, the gas through hole 301 is fixed without being rotated in the first direction even when the preset force is applied. Can be in a state.

Here, referring to FIG. 2A, the gas through hole 301 may communicate with the body portion 10 and the hose connecting portion 20 so that gas may flow from the body portion 10 to the hose connecting portion 20. In this case, the safety locking device 60 may maintain the gas through hole 301 in communication with the body portion 10 and the hose connecting portion 20.

Referring to FIG. 2B, when the gas through hole 301 is blocked because it is not in communication with the body part 10 and the hose connection part 20, the gas is not supplied to the hose connection part 20. The safety lock device 60 may allow the gas through hole 301 to be shielded from the body portion 10 and the hose connection portion 20.

Referring to FIG. 2C, a case where the gas through hole 301 is not completely open or completely shielded from the body portion 10 and the hose connecting portion 20, and is only partially communicated with each other may occur. In this case, even if the gas flows excessively, the fuse 40 cannot block the gas flow, so the risk of an accident is high.

In this case, the safety locking device 60 rotates the opening and closing ball 301 in the first direction so that the gas through hole 301 is shielded.

Figure 3 is an exploded perspective view showing a safety lock device according to an embodiment of the present invention.

Referring to FIG. 3, the safety lock device 60 may include an outer case 610, an inner case 620, a body 630, an elastic part 640, and a grip part 650.

The outer case 610 may rotate the opening and closing ball 30 by a predetermined angle in a first direction or a second direction by rotating in a first direction or a second direction. For example, the outer case 610 may be formed in a cylindrical shape.

The outer case 610 includes a guide groove 611 and the coupling shaft 612.

The guide groove 611 may guide the locking portion 621 of the inner case 620 to be described later. The guide groove 611 may include a straight portion 6111, an inclined portion 6112, and a fixing portion 6113.

The straight portion 6111 is formed along the ground in the horizontal direction (ie, the direction perpendicular to the longitudinal direction of the outer case 610) with reference to FIG. 4.

The inclined portion 6112 is formed to be inclined upward from the end of the straight portion 6111.

The fixing part 6113 is formed to be inclined downward from the end of the inclined part 6112.

As such, the guide groove 611 may guide the locking portion 621 of the inner case 620 through the straight portion 6111, the inclined portion 6112, and the fixing portion 6113.

Coupling shaft 612 is formed to protrude from the lower side of the outer case 610, it can be fixed to the ball rest 31. The outer case 610 is fixed to the ball base 31 by the coupling shaft 612, so that the opening and closing ball 30 is rotated in accordance with the direction and angle at which the user rotates the operation handle 50 or the safety lock device (60). Can be.

The inner case 620 is disposed inside the outer case 610 and is movable in a third direction or a fourth direction along a direction perpendicular to the ground. In the present embodiment, the third direction is the upward direction and the fourth direction is the downward direction. For example, the inner case 620 may be formed in a cylindrical shape having the same shape as the outer case 610, and may be disposed to be movable in a third direction or a fourth direction along a vertical direction inside the outer case 610. . At this time, the length of the inner case 620 is shorter than the outer case 610, the inner case 620 may be moved up and down on the body portion 630 to be described later.

The inner case 620 includes a locking portion 621 and the moving groove 622.

The locking portion 621 is protruded outward from the outer surface of the inner case 620, the movement of the inner case 620 in the third or fourth direction can be adjusted. In detail, the locking part 621 may be formed in a shape that may be fixed between the inclined part 6112 and the fixing part 6113. For example, the cross section of the locking portion 621 may be formed in a semicircle or a triangle.

The locking portion 621 is formed to protrude a predetermined length out of the guide groove 611 formed in the outer case 610, the movement in the third or fourth direction by the guide groove 611 can be adjusted.

The moving groove 622 is formed inside the inner case 620, and is formed in a vertical direction to guide the inner case 620 to be moved in a third direction or a fourth direction along the trunk portion 630. . In detail, the moving groove 622 may be fastened to the moving guide part 631 of the body 630 to move in the third or fourth direction on the moving guide part 631.

However, although not shown in the drawing, a guide groove is formed on the outer surface of the inner case 620 along a horizontal direction with the ground, and the movement guide part may be formed to protrude on the inner surface of the outer case 610 to correspond thereto. Thus, the outer case 610 may be guided to rotate only in the first direction and the second direction from the inner case 620.

The body part 630 may include a body part 631, a movement guide part 632, a protrusion part 633, a support part 634, and a connection groove 535. The body 630 is not rotated and moved, but is in a fixed state.

The body part 631 may be disposed inside the inner case 620 to guide the movement of the inner case 630 in the third or fourth direction. For example, the body portion 631 may be formed in a cylindrical shape and disposed inside the outer case 610 and the inner case 620. The body portion 631 is longer than the inner case 620 and is formed to correspond to the length of the outer case 610 so that the inner case 620 is moved in the third and fourth directions on the body portion 631. can do.

The movement guide part 632 protrudes along the longitudinal direction of the body part 631 so as to correspond to the moving groove 622 on the surface of the body part 631. As the movement guide part 632 is fastened to the movement groove 622, the inner case 620 may move in the third direction or the fourth direction along the length direction of the body part 631. For example, the pair of movement guides 631 may be formed to face each other at the side of the cylindrical body portion 631.

The protrusion 633 protrudes from the upper portion of the body portion 631. For example, the protrusion 633 may be formed to have a diameter smaller than the diameter of the body portion 631. The protrusion 633 may be located in the grip 650 and may rotate together as the user rotates the grip 650. As an example, the protrusion 633 may be exposed to the outside of the operation handle 50.

The support 634 is disposed above the protrusion 633 and has an elastic force. The force applied from the outside can be absorbed.

The connection groove 635 is formed in the protrusion 633 and the support 634, the connection shaft 651 of the gripping portion 650 to be described later may be inserted.

The elastic part 640 is disposed surrounding the outer circumferential surface of the body part 631 of the body part 630 at the lower side of the inner case 620. The elastic portion 640 may be stretched in the third direction or compressed in the fourth direction. The elastic part 640 applies a predetermined force to the inner case 620 in the third direction.

The gripping portion 650 is coupled to the upper side of the outer case 610, and may be a portion that the user grips to lock or open the valve. The grip portion 650 may be exposed to the outside of the operation handle 50.

The gripping portion 650 may include a connecting shaft 651.

The connecting shaft 651 may be inserted into the connecting groove 635 to fix the body 630 without moving inside the outer case 610.

At this time, the connecting shaft 651 has a predetermined diameter smaller than the connecting groove 635, when the connecting shaft 651 is inserted into the connecting groove 635, the connecting shaft 651 is a protrusion 633. And a frictional force with the support 634 may not be strong. Therefore, the connecting shaft 651 can be kept in a fixed state without rotating together in the first direction or the second direction due to the frictional force between the protrusion 633 and the support 634.

Figure 4 is a front view of the safety lock device according to an embodiment of the present invention, Figure 5 is a front view showing a change in the operating state of the safety lock device according to Figure 4, Figure 6 is a cross-sectional view of the safety lock device according to FIG. to be.

4 to 6, as the user rotates the grip part 650 coupled to the outer case 610 in the first direction or the second direction, the outer case 610 may be in the first direction or the second direction. Direction of rotation. Therefore, the opening / closing ball 30 is rotated in the first direction or the second direction through the ball stand 31 fixedly connected to the coupling shaft 612 of the outer case 610.

First, in the case of Figure 4, the opening and closing ball 30 is rotated in the second direction, the gas through hole 301 of the opening and closing ball 30, as shown in Figure 2a, the body portion 10 and the hose connecting portion 20 ), Gas may flow.

At this time, the locking portion 621 is located in the straight portion 6111 of the guide groove 611, and the locking portion 621 is pressed in the fourth direction by the straight portion 6111. Therefore, the state in which the opening and closing ball 30 is rotated in the second direction can be maintained. That is, the inner case 620 is lowered in the fourth direction along the trunk portion 630, whereby the elastic portion 640 is compressed. In this case, due to the force to return the elastic portion 640 compressed in the fourth direction, the elastic portion 640 may be in a state of applying a force to the inner case 620 in the third direction.

As shown in FIG. 5, when the outer case 610 is rotated in the first direction, the gas through hole 301 of the opening / closing ball 30 is the body portion 10 and the hose connecting portion 20 as shown in FIG. 2B. And shielded, the gas can be blocked.

At this time, while the outer case 610 is rotated in the first direction, the engaging portion 621 that is pressed by the straight portion 6111 rises on the inclined portion 6112. In other words, while the pressure applied to the locking portion 621 in the fourth direction is released, the pressure rises in the third direction. The outer case 610 in which the inclined portion 6112 is formed is rotated in the first direction by the force of the catching portion 621 rising in the third direction on the inclined portion 6112.

Similarly, while the elastic part 640 compressed in the fourth direction applies elasticity in the third direction, the inner case 620 is raised along the trunk portion 620 in the third direction. That is, a force is applied to the inner case 620 in the third direction by the elastic portion 640.

As the catching part 621 rides up the inclined part 6112, the catching part 621 that rotates in the first direction does not stop the rotation of the outer case 610 that has been rotated in the first direction, and rises in the third direction. Is rotated continuously in the first direction. That is, as the locking portion 621 rises in the third direction, the outer case 610 may help to rotate in the first direction. Therefore, incomplete opening and closing can be prevented and the gas through hole 301 of the opening and closing ball 30 can be completely shielded.

The locking part 621 may be stopped by the fixing part 6113 at the upper end of the inclined part 6112. That is, the locking part 621 may be stopped between the inclined part 6112 and the fixing part 6113 to fix the position. Therefore, the gas through hole 301 of the opening and closing ball 30 can be maintained in a completely shielded state.

7 is a view showing a fixing part according to an embodiment of the present invention.

Referring to FIG. 7, the fuse cock 1 according to the exemplary embodiment of the present invention may further include a fixing part 70. In addition, the operation handle 50 may further include a fixing protrusion groove (510).

The fixing protrusion groove 510 may be a groove formed in the lower surface of the operating handle 50.

The fixing part 70 may fix the operation handle 50 which is locked. In detail, the fixing part 70 may fix the operation handle 50 so that the operation handle 50 in the locked state is not easily rotated by an external force.

The fixing part 70 includes a housing 710, a mover 720, and a tension part 730.

The housing 710 has a guide groove 711 formed therein. For example, the housing 710 may be formed in a cylindrical shape, and may have an open top surface. The housing 710 may be disposed under the operation handle 50 at the side of the body portion 10. Specifically, it may be disposed below the fixing protrusion groove 510 formed in the operation handle 50.

The mover 720 may be disposed in the guide groove 711. In particular, the upper portion of the mover 720 is exposed to the outside of the guide groove 711. In addition, the mover 720 has a hollow formed therein, the bottom surface is open. In addition, the mover 720 is formed with a fixing protrusion 731 on the top. The fixing protrusion 731 is formed to be inserted into the fixing protrusion groove 510.

The tension part 730 protrudes into the open lower surface of the mover 720 in a state of being inserted into the hollow of the mover 720 and contacts the inner bottom surface of the housing 710.

Specifically, the tension unit 730 is compressed and disposed by the inner bottom surface of the housing 710 and the inner top surface of the mover 720. Therefore, a force to lift the mover 720 by the tension unit 730 is applied.

Specifically, when the gas through hole 301 is shielded and the flow of gas is blocked, the fixing protrusion 721 is inserted into the fixing protrusion groove 510. That is, the operation knob 50 may be fixed without being easily rotated by the fixing protrusion 721 inserted into the fixing protrusion groove 510. Therefore, the state in which the gas through hole 301 is shielded is not easily opened.

Subsequently, when a force for rotating the operation knob 50 is applied to open the gas through hole 301, the tension unit 730 disposed inside the mover 720 is compressed, so that the fixing protrusion 721 is fixed. It may be separated from the groove 510. In this case, the gas through hole 301 may be opened by rotating the operation knob 50.

As described above, the opening / closing ball 30 rotated in a shielded state is fixed through the fixing part 70 so that the gas through hole 301 is not easily opened by an unintentional external force, thereby preventing a gas accident. It can be prevented.

Although exemplary embodiments of the present invention have been described in detail above, those skilled in the art will appreciate that various modifications can be made to the above-described embodiments without departing from the scope of the present invention. . Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

1: fusecock
10: body part
20: hose connection
30: opening and closing ball
40: Hughes
50: operating handle
60: safety lock
70: fixed part

Claims (7)

A body part connected to the gas pipe;
A hose connection portion connected to the hose;
Is disposed between the body portion and the hose connecting portion, a groove-shaped protrusion groove is formed in the upper portion, a gas through hole is formed therein, so that the gas through hole communicates or is blocked with the body portion and the hose connection portion, An opening / closing ball rotated in a first direction or a second direction opposite to the first direction;
Is connected to the opening and closing ball, a predetermined force is applied in the first direction to the gas through hole is shielded state,
When a force that is not at least smaller than the predetermined force is applied in the second direction and rotates more than the predetermined angle in the second direction, the gas through hole is fixed without being rotated in the first direction even when the predetermined force is applied. A safety lock to be opened; And
A ballast having a fastening protrusion inserted into the protrusion groove at a lower portion thereof, and a groove into which a coupling shaft of the safety lock device is inserted at the top thereof; Including,
The safety lock device,
An outer case connected to the opening and closing ball and rotating the opening and closing ball by the predetermined angle in the first direction or the second direction and rotating the opening and closing ball by the predetermined angle in the first or second direction;
A gripping portion coupled to an upper side of the outer case;
An inner case disposed inside the outer case and movable in a third direction upward in a vertical direction or a fourth direction opposite to the third direction;
A body part disposed inside the inner case to guide movement of the inner case in the third direction or the fourth direction; And
And an elastic part disposed surrounding the outer circumferential surface of the body portion at a lower side of the inner case to apply the predetermined force to the inner case in the third direction.
delete delete The method according to claim 1,
The inner case,
And an engaging portion formed to protrude outward from an outer surface of the inner case to control movement of the inner case in the third direction or the fourth direction.
The method according to claim 4,
The outer case,
Guide the locking portion formed to protrude outward, by adjusting the movement in the third direction or the fourth direction of the inner case, to fix the rotation state of the opening and closing ball in the first direction or the second direction Including a guide groove,
The guide groove,
A straight portion which presses the locking portion in the fourth direction to fix the opening / closing ball rotated in the second direction;
An inclined portion formed to be inclined upwardly from the straight portion to rotate the opening / closing ball in the first direction by a force applied from the elastic portion to the inner case in the third direction; And
A fixing part which is formed to be inclined downward from the inclined part and stops the movement of the locking part at an upper end point of the inclined part to stop the opening and closing ball rotated at a predetermined angle in the first direction; Cock.
The method according to claim 5,
When the engaging portion is located at any point of the area of the inclined portion,
By the predetermined force in the third direction applied from the elastic portion to the inner case, the locking portion is moved in the third direction along the inclined portion, so that the outer case is rotated in the first direction, A fuse cock in which the opening and closing ball is rotated in the first direction.
The method according to claim 6,
The safety lock device,
When the engaging portion is located in the straight portion, the inner case is pressed downward while the inner case is moved along the third direction,
The fuse cock of the opening and closing ball is opened to communicate with the body portion and the hose connecting portion.

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