JPS6238079Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a draining device for a compressed air tank.

If moisture is sent into the compressed air piping used for vehicle brakes together with the air, there is a risk that rust will form in the piping or it will freeze in cold regions, making the brake operation unstable. Therefore, it is necessary to appropriately discharge the moisture accumulated in the air tank from the bottom of the air tank that sends air into the piping. For this purpose, a drain pot 1 as shown in FIGS. 1 and 2 has conventionally been attached to the bottom 3 of an air tank 2. Reference numeral 5 denotes a drain tank body, in which an air passage 7 is formed. The air passage 7 is located at the lower part of the drain tank body 5.
It communicates with a discharge passage 9 provided in the radial direction. Inside the air passage 7, there are an air passage 7 and a discharge passage 9.
The on-off valve body 11 that cuts off communication with the spring 1
0, it is pressed in the normally closed direction. The protrusion 13 of the on-off valve body 11 is pressed by an operating lever 17 supported by a pin 15 on the drain socket body 5 to open the on-off valve body 11. During operation, the operating ring 1 is suspended from the operating lever 17.
By pulling 9 downward in the figure, the operating lever 17 is rotated clockwise in FIG.
When the protruding portion 13 of the air outlet 1 is pressed, air flows from the air passage 7 to the discharge passage 9, and moisture is discharged to the outside together with the air.

In the conventional structure described above, the operating ring 19 is normally in a suspended state. In this condition, in cold regions, water adhering to the operating ring 19 may freeze, or snow may adhering to the operating ring 19 and freeze, increasing the weight of the operating ring 19. The force in the opening direction acts naturally, and in the worst case, the opening/closing valve body 11 opens and air is discharged from the air passage 7 through the discharge passage 9, resulting in a problem that the brake operation becomes uncertain. are doing.

This invention was proposed in view of the above problems.
A drain cock body that is attached to the bottom of the compressed air tank and has an air passage to the outside of the compressed air tank, an on-off valve body that opens and closes the air passage, an operating lever that is supported by the drain cock body and operates the on-off valve body, and the same operation. The gist of the present invention is a drain pot device characterized by comprising an operating ring suspended from a lever and a locking means for locking the operating ring to the drain pot body.

According to the present invention, when the drain kettle device is not operated, the operating ring is locked to the drain kettle main body by the locking means, so that the opening/closing valve body is prevented from operating due to abnormal external force caused by frozen snow or ice attached to the operating ring. This has the effect of improving the reliability of brake operation.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

In the drawings, parts that are substantially the same as those in the conventional structure described above will be described using the same reference numerals as used above.

Reference numeral 5 denotes a drain tank main body, which has a male threaded portion 4 formed at one end thereof, and is attached to the bottom 3 of the air tank 2 by screwing the male threaded portion 4 into a female threaded portion 6 provided on the bottom 3 of the air tank 2. ing.

Reference numeral 7 denotes an air passage, which is provided inside the drain tank main body 5. Reference numeral 9 denotes a discharge passage, which is provided from the lower end of the air passage 7 in the radial direction of the drain pot main body 5, and communicates with the outside.

Reference numeral 11 denotes an on-off valve body, which is disposed within the air passage 7 and is pressed against the drain pot main body 5 by a spring 10 to cut off communication between the air passage 7 and the discharge passage 9. Reference numeral 13 denotes a protruding portion of the on-off valve body 11, which is a portion protruding to the outside from the bottom surface portion 14 of the groove portion 12 of the drain pot body 5.

Reference numeral 17 denotes an operation lever, which is a flat plate having an approximately L-shape, and is rotatably supported on the drain socket main body 5 by a pin 15, and one side of the L-shape is rotated into the groove 12 of the drain socket main body 5. By being extended so as to move, it is arranged so as to be able to come into contact with the protruding part 13 of the on-off valve body 11, and the other side part is extended and positioned outside the drain pot main body 5. 16 is a lever spring, operating lever 1
7 in the counterclockwise direction in FIG.

Reference numeral 19 denotes an operating ring, which is suspended and supported in a small hole 20 bored at the end of the operating lever 17. 22
is a notch constituting a locking means, and the operation ring 1
9 is a notch provided in the corner of the drain cock body 5 on the side opposite to the side on which it is suspended, and is provided in a position where the operating ring 19 is rotated beyond the pin 15 and locked. .

The operation of this embodiment with the above configuration will be explained below. When operating the draining device, the operating lever 17 is rotated clockwise in FIG. 3 about the pin 15 by pulling the operating ring 19 horizontally. As the operation lever 17 rotates, the protrusion 13 of the on-off valve body 11 is pressed by the operation lever 17, and the on-off valve body 11 moves against the biasing force of the spring 10. The movement of the on-off valve body 11 brings the air passage 7 and the discharge passage 9 into communication with each other, and the air is discharged to the outside.

When the drain control device is not operated, the operating ring 19 is rotated around the small hole 20 and locked in the notch 22, so that the operating lever 1 is not operated.
A locking force acting in the counterclockwise direction in FIG. 3 is constantly applied to 7.

As is clear from the above, according to the above embodiment, when the drain kettle device is not operated,
Since the operating ring 19 can be locked in the notch 22, the opening/closing valve body 1 is prevented from being damaged by abnormal external force caused by frozen snow or ice attached to the operating ring 19.
1 is activated and the compressed air is prevented from being discharged, which has the effect of improving the reliability of brake operation.

[Brief explanation of the drawing]

Figure 1 is a partial cross-sectional explanatory diagram showing the conventional structure, Figure 2
The drawings are an explanatory bottom view of FIG. 1, FIG. 3 is a partially sectional explanatory view showing an embodiment of the present invention, and FIG. 4 is an explanatory side view of FIG. 3. 2...Compressed air tank, 5...Drain cock body, 7...Air passage, 11...Opening/closing valve body, 17
...Operation lever, 19...Operation ring, 22...
Notch part.

Claims (1)

[Scope of utility model registration request] A drain cock body that is attached to the bottom of the compressed air tank and has an air passage to the outside of the compressed air tank, an on-off valve body that opens and closes the air passage, an operating lever that is supported by the drain cock body and operates the on-off valve body, and the same operation. A drain pot device comprising: an operating ring suspended from a lever; and a locking means for locking the operating ring to the drain pot body.