KR20090053244A - Rotary joint - Google Patents

Abstract

The present invention relates to a rotary joint, wherein the first outer rotary shaft 20 having the outlet 21 is formed on the fixed shaft 10 having the fluid passage 11 and the second outer rotary shaft 30 having the outlet 31 formed therein. The first outer rotary shaft 20 and the second outer rotary shaft 30 are arranged side by side on the fixed shaft 10, the first sprocket 23 is mounted on one end of the first outer rotary shaft 20 The first sprocket 23 rotates the first outer rotating shaft 20 in one direction, and the inner rotating shaft 40 is mounted inside the fixed shaft 10, and the inner rotating shaft 40 is rotated. A flange portion 41 formed at one end and one end of the second outer rotating shaft 30 are coupled by bolts 42, and a second sprocket 43 is mounted at the other end of the inner rotating shaft 40, thereby providing a second sprocket ( The rotational power of 43 is transmitted to the second outer rotational shaft 30 through the inner rotational shaft 40, so that the second outer rotational shaft 30 is of the first outer side. It is characterized in that it is rotated in a direction opposite to the rotation direction of the rotation shaft 20.

Description

Rotary joint {ROTARY JOINT}

The present invention relates to a rotary joint, and more particularly, the first outer shaft and the second outer shaft are arranged side by side outside the fixed shaft, the first rotary shaft by a pulley fitted to the fixed shaft and mounted to the side of the first rotary shaft The rotary joint is rotated, the inner rotary shaft is mounted inside the fixed shaft, the inner rotary shaft and the second outer rotary shaft is connected, and the second outer rotary shaft is rotated in the opposite direction to the rotation direction of the first outer rotary shaft. .

Korean Patent Application No. 2007-7013997 (filed June 20, 2007) introduces a "rotary joint and a housing partition of a rotary joint".

The rotary joint has a substantially cylindrical shaft body, a shaft flow hole formed in the shaft body and having an opening on its side, a housing formed with a through hole for allowing the shaft to rotate relatively, and a central axis direction of the shaft body. A housing divider formed by dividing the housing into a plurality of lines so as to form a line; a housing flow hole formed in the housing divider to communicate the shaft flow hole with the outside of the housing; and a side surface of the shaft body or an inner peripheral surface of the insertion hole. A ring-shaped groove formed on at least one side to communicate the shaft flow hole and the housing flow hole, and a ring-shaped leak prevention that blocks the movement of the fluid in the direction of the central axis between the shaft body and the housing; It is characterized by including a member.

However, in the rotary joint, although the housing body is composed of a plurality of housing partitions, the other housing partition cannot be rotated in the opposite direction with respect to the rotational direction of either housing partition.

Accordingly, an object of the present invention is to arrange the first outer rotational shaft and the second outer rotational shaft side by side on the outer side of the fixed shaft, the first rotating shaft is rotated by a pulley fitted to the fixed shaft and mounted to the side of the first rotating shaft, The inner rotary shaft is mounted on the inner side, and the inner rotary shaft and the second outer rotary shaft are connected to provide a rotary joint capable of rotating the second outer rotary shaft in a direction opposite to the rotational direction of the first outer rotary shaft.

Rotary joint according to the present invention for achieving the above object is equipped with a first outer rotation shaft formed with a discharge port and a second outer rotation shaft formed with a discharge port in a fixed shaft formed with a fluid passage, the first outer rotation shaft and The second outer rotating shaft is arranged side by side, the first sprocket is mounted to one end of the first outer rotating shaft, the first outer rotating shaft is rotated in either direction by the first sprocket, the inner rotating shaft is mounted inside the fixed shaft And a flange portion formed at one end of the inner rotation shaft and one end of the second outer rotation shaft are coupled by bolts, and a second sprocket is mounted at the other end of the inner rotation shaft, so that the rotational power of the second sprocket is rotated through the inner rotation shaft. Being transmitted to the outer rotary shaft, the second outer rotary shaft is rotated in a direction opposite to the rotational direction of the first outer rotary shaft. And that is characterized.

The fluid passage of the fixed shaft is divided into a first fluid passage and a second fluid passage, and the outlet of the first outer rotating shaft is divided into a first outlet and a second outlet, and the outlet of the second outer rotating shaft is also a first outlet and a second outlet. The fluid supplied to the first fluid passage is supplied to the first outlet of the first outer rotary shaft and the first outlet of the second outer rotary shaft, and the fluid supplied to the second fluid passage is of the first outer rotary shaft. And a second outlet of the first outlet and the second outer rotary shaft.

One end of the fixed end is fixed and supported by a bracket fixed to an external fixed object, a conductor is inserted into the fixed end, and the power supply terminal is attached to one end of the first outer rotating shaft and the second outer side. It is characterized in that it is electrically connected to the power terminal attached to one end of the rotary shaft.

Thereby, the rotary joint according to the present invention can be rotated in a direction opposite to each other on the fixed shaft and the first outer rotary shaft, when the first outer rotary shaft and the second outer rotary shaft are rotated in opposite directions to each other The fluid can be simultaneously supplied to the first outer rotating shaft and the second rotating shaft through the fixed shaft, so that the two rotating apparatuses mounted on the first outer rotating shaft and the second rotating shaft can be rotated in opposite directions. It has an effect.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 to 4, a rotary joint according to the present invention includes a first outer rotating shaft 20 and an outlet 31 having a discharge port 21 formed on a fixed shaft 10 having a fluid passage 11 formed therein. A second outer rotary shaft 30 is mounted, a first outer rotary shaft 20 and a second outer rotary shaft 30 are arranged side by side on the fixed shaft 10, and one end of the first outer rotary shaft 20 The first sprocket 23 is mounted, the first outer rotation shaft 20 is rotated in one direction by the first sprocket 23, the inner rotation shaft 40 is mounted inside the fixed shaft 10, A flange portion 41 formed at one end of the inner rotation shaft 40 and one end of the second outer rotation shaft 30 are coupled by bolts 42, and a second sprocket 43 is connected to the other end of the inner rotation shaft 40. Mounted, so that the rotational power of the second sprocket 43 is transmitted to the second outer rotation shaft 30 through the inner rotation shaft 40, so that the second outer rotation 30 is rotated in the opposite direction to the rotation direction of the first outer rotating shaft (20).

The fluid passage 11 of the fixed shaft 10 is divided into a first fluid passage 11a and a second fluid passage 11b, and the outlet 21 of the first outer rotating shaft 20 is the first outlet 21a. ) And the second outlet 21b, and the outlet 31 of the second outer rotary shaft 30 is also divided into the first outlet 31a and the second outlet 31b, to the first fluid passage (11a). Fluid supplied is supplied to the first outlet 21a of the first outer rotating shaft 20 and the first outlet 31a of the second outer rotating shaft 30, and the fluid supplied to the second fluid passage 11b is supplied. The first outlet 21b of the first outer rotary shaft 20 and the second outlet 31b of the second outer rotary shaft 30 are supplied.

For example, when air is supplied to the first fluid passage 11a, the air passes through the first fluid passage 11a to the first outlet 21a and the second outer rotation shaft 30 of the first outer rotation shaft 20. When the paint is supplied to the first outlet 31a of the pump, discharged from the first outlets 21a and 31a, and the paint is supplied to the second fluid passage 11b, the paint is applied to the first of the first outer rotary shaft 20. It is supplied to the discharge port 21b and the 2nd discharge port 31b of the 2nd outer rotating shaft 30, and is discharged from the said 2nd discharge port 21b and 231b. 5, one end of the hoses 61, 62, 66, 67 is connected to the first outlet 21a, 31a and the second outlet 21b, 31b, and the hose 61, When the other end of 62, 63, 64 is connected to the spray gun 60 which rotates at the same speed as the 1st outer rotating shaft 20, and the spray gun 65 which rotates at the same speed as the 2nd outer rotating shaft 30, Air and paint from the outlets 21a, 31a; 21b, 31b are supplied to the spray guns 60, 65 through the hoses 61, 62, 63, 64, and the air from the spray guns 60, 65 Paint is sprayed at the same time.

1 and 4, one end of the fixed end 10 is fixed and supported by a bracket 15 fixed to an external fixed object (not shown), and is fixed to the fixed end 10. A conductive wire is inserted, and the conductive wire 17 is electrically connected to a power terminal 25 attached to one end of the first outer rotation shaft 20 and a power terminal 35 attached to one end of the second outer rotation shaft 30. do.

As a result, when power is supplied to the power terminals 25 and 35, a heater (not shown) surrounding the power terminal and the hose may be electrically connected to supply power to the heater.

In the rotary joint according to the present invention configured as described above, the first outer rotation shaft 20 is rotated by the first sprocket 23 in the state in which the fixed shaft 10 is fixed by the bracket 15. When rotated clockwise in the direction of 71, the second outer rotating shaft 30 is rotated in the counterclockwise direction in which the second sprocket 43 is opposite to the arrow 71 shown in FIG. 5. At this time, when air is supplied to the first fluid passage 11a of the fixed shaft 10, the air passes through the first fluid passage 11a and the first outlet 21a and the second outside of the first outer rotation shaft 20. When the paint is supplied to the first outlet 31a of the rotating shaft 30, discharged from the first outlets 21a and 31a, and the paint is supplied to the second fluid passage 11b of the fixed shaft 10, the paint is It is supplied to the 1st discharge port 21b of the 1st outer rotating shaft 20, and the 2nd discharge port 31b of the 2nd outer rotating shaft 30, and is discharged from the said 2nd discharge ports 21b and 231b, and is shown in FIG. As shown, one end of the hoses 61, 62, 66, 67 is connected to the first outlet 21a, 31a and the second outlet 21b, 31b, and the hoses 61, 62, 63, 64 If the other end of the spray gun 60 is rotated at the same speed as the first outer rotary shaft 20 and the spray gun 65 is rotated at the same speed as the second outer rotary shaft 30, the outlet 21a, 31a 21b, 31b) air and paint It is supplied to the spray guns 60 and 65 through the hoses 61, 62, 63 and 64, and the air and the paint are sprayed simultaneously from the spray guns 60 and 65.

As such, in the rotary joint according to the present invention, the first outer rotation shaft 20 and the second outer rotation shaft 30 may be rotated in opposite directions from the fixed shaft 10, and the first outer rotation shaft 20 and the second When the outer rotating shaft 30 is rotated in the opposite direction, the fluid can be simultaneously supplied to the first outer rotating shaft 20 and the second rotating shaft 30 through the fixed shaft 10, so that the first outer rotating shaft and the first rotating shaft 30 The two rotatable apparatuses mounted on the two rotational shafts may be rotated in opposite directions to each other to perform work.

1 is a side view showing a rotary joint according to the present invention

Figure 2 is a side cross-sectional view showing a rotary joint according to the present invention

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view taken along the line B-B of FIG.

5 is a side view schematically showing an example in which a rotary joint according to the present invention is applied;

Claims (3)

A first outer rotary shaft 20 having an outlet 21 and a second outer rotary shaft 30 having an outlet 31 are mounted on the fixed shaft 10 having the fluid passage 11, and the fixed shaft 10 The first outer rotation shaft 20 and the second outer rotation shaft 30 are arranged side by side, the first sprocket 23 is mounted on one end of the first outer rotation shaft 20, the first sprocket 23 The first outer rotary shaft 20 is rotated in any one direction, the inner rotary shaft 40 is mounted to the inside of the fixed shaft 10, the flange portion 41 formed on one end of the inner rotary shaft 40 and One end of the second outer rotation shaft 30 is coupled by a bolt 42, the second sprocket 43 is mounted on the other end of the inner rotation shaft 40, the rotational power of the second sprocket 43 is the inner rotation shaft ( The second outer rotary shaft 30 is transmitted to the second outer rotary shaft 30 through 40 so that the second outer rotary shaft 30 is opposite to the rotational direction of the first outer rotary shaft 20. Rotary joint, characterized in that the rotation. The method of claim 1, The fluid passage 11 of the fixed shaft 10 is divided into a first fluid passage 11a and a second fluid passage 11b, and the outlet 21 of the first outer rotating shaft 20 is the first outlet 21a. ) And the second outlet 21b, and the outlet 31 of the second outer rotary shaft 30 is also divided into the first outlet 31a and the second outlet 31b, to the first fluid passage (11a). Fluid supplied is supplied to the first outlet 21a of the first outer rotating shaft 20 and the first outlet 31a of the second outer rotating shaft 30, and the fluid supplied to the second fluid passage 11b is supplied. And a first outlet (21b) of the first outer rotary shaft (20) and a second outlet (31b) of the second outer rotary shaft (30). The method of claim 1, One end of the fixed end 10 is fixed and supported by a bracket 15 fixed to an external fixed object, a conductive wire is inserted into the fixed end 10, and the conductive wire 17 is the first outer side. Rotary joint characterized in that it is electrically connected to the power supply terminal (25) attached to one end of the rotary shaft (20) and the power supply terminal (35) attached to one end of the second outer rotary shaft (30).

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