JP2539318Y2 - Universal joint - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a universal joint capable of freely adjusting a connection angle of a pipe.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG. 6, connection end surfaces (4, 5) of a pair of pipe connection portions (1, 2) are respectively inclined at a predetermined angle θ, and the pair of pipe connection portions (1, 2) are inclined. , 2) are rotatably connected via flanges (6, 7) forming the connection end faces (4, 5).
issue).

[0003] In the above-mentioned pipe connection parts (1, 2), the connection angle can be freely adjusted from a maximum of 180 ° to 2θ by rotating one pipe connection part (1) with respect to the other pipe connection part (2). I can do it.

[0004]

[Problems to be Solved by the Invention] However, in the universal joint (3), since there is no locking means when the pipe connecting portions (1, 2) are connected, for example, the flanges (6, 7) are overlapped. Separate locking means, such as a clamp (20), which is fixed at the position, is required.

[0005]

According to the present invention, a pair of pipes rotatably interconnected via connection end faces (14, 15) inclined at a predetermined angle are provided as means for solving the above-mentioned conventional problems. An annular groove (16) is formed along the connection end face (14) around the connection end face (14) of the one pipe connection part (12), and A coating flange (17) protrudes outside the groove (16), and the enlarged diameter portion (20) is extended from the connection end face (15) of the other pipe connection portion (13). A sliding flange (21) along the connection end face (15) is intermittently protruded from the inner periphery of the end of the pipe, and the other pipe connection is formed in the annular groove (16) of the one pipe connection (12). In the universal joint (11) in which the sliding flange (21) of the part (13) is slidably fitted, a handle is fitted around the outer periphery of one pipe connection part (12) and / or the other pipe connection part (13). Hole (22,
23) is provided.

[0006]

[Action] is rotated the other tube connection (13) with respect to one pipe connection (12), up to 180 ° connection angle between the respective inclination angle and theta ₁ connection end face (14, 15) it can be adjusted freely to 2 [Theta] ₁ from. At this time, the handle (2, 23) is inserted into the handle fitting hole (22, 23) of one and / or the other pipe connection (12, 13).
5) is fitted and the handle (25) is used as a clue for rotation. With the relative rotation of the pair of pipe connections (12, 13), the sliding flange (21) of the other pipe connection (13) is brought into contact with the annular groove (16) of the one pipe connection (12). Sliding inside).

[0007] As described above, the sliding flange (21) of the other pipe connection part (13) is fitted into the annular groove (16) of the one pipe connection part (12), so that the pair of pipe connection parts is formed. The connection of (12,13) is locked rotatably. Further, since the sliding flange (21) is provided intermittently, it can be deformed and is easily fitted into the annular groove (16). However, by intermittently providing the sliding flanges (21), dust, mud, and the like from the gap (24) between the sliding flanges (21) into the connection portion can be prevented from being formed outside the annular groove (16). Blocked by the covering flange (17).

[0008]

If an exemplary embodiment described illustrates an Example of the present invention in FIGS. 1 to 5, a universal joint (11) is rotatably through the inside of the connecting end surface inclined at a predetermined angle theta ₁ (14, 15) It consists of a pair of pipe connections (12, 13) which are interconnected and form a socket (12A) and an insertion port (13A) on the outside.
Slightly outside the connection end face (14) of (2), the pipe connection part (1
An annular groove (16) is formed on the outer periphery of (2) along the connection end surface (14), and a coating flange (17) is protruded outside the annular groove (16). 16) packing ring inside
A packing groove (18) in which (19) is mounted is formed, and a pair of handle fitting holes (22, 23) are formed at an angle of 180 ° on the outer periphery of the socket (12A). I have.

An enlarged diameter portion (20) is extended from a connection end surface (15) of the other pipe connection portion (13), and the inner diameter of an end portion of the enlarged diameter portion (20) is connected as shown in FIG. Sliding flange (2
1) is intermittently protruded, and the enlarged diameter portion of the pipe connection portion (13) is provided.
At the outer periphery of (20), a pair of handle fitting holes (23,
23) is formed.

In order to form the universal joint (11) by connecting the pair of pipe connection parts (12, 13), the connection end face (14) of one pipe connection part (12) is connected to the pipe connection part (13). ), And inserted into the annular groove (16) of the one pipe connection part (12) in the other pipe connection part (1).
3) The sliding flange (21) of the enlarged diameter portion (20) is slidably fitted. At this time, since the sliding flange (21) is intermittent, it can be deformed and fitted easily. Since the outside of the gap (24) between the sliding flanges (21) is covered with the covering flange (17), dirt, mud, etc., can enter from the connecting portions of the pipe connecting portions (12, 13). Has been prevented.

In the universal joint (11), as shown in FIG. 5, the handle fitting holes (22, 22, 23, 2) of the pair of pipe connecting portions (12, 13) are provided.
3) When the handle (25) is fitted to and rotated through the handle (25), the connection angle can be freely adjusted from 180 ° shown in FIG. 2 to 2θ ₁ = θ ₂ shown in FIG. It is possible to
Then, after adjusting to the desired connection angle, the pipe connection (12, 1
The pipes to be connected are inserted and connected to the receiving part (12A) and the inserting part (13A) of 3).

In addition to the present embodiment, the handle fitting hole may be provided in only one of the pair of pipe connection portions (12, 13).

[0013]

Therefore, in the universal joint of the present invention, the connection between the pair of pipe connecting portions can be rotatably locked without using a separate engaging means, and the universal joint is fitted into the handle fitting hole. By using the handle, it is possible to easily rotate the pipe connection part, and it is possible to prevent intrusion of dust, mud, etc. into the connection part between the pipe connection parts. Note that if a protrusion is formed to attach the handle, the pipe connection may rotate due to the external force of the earth covering when filling the pipe. Since the holes are provided, such a problem is solved.

[Brief description of the drawings]

 1 to 5 show one embodiment of the present invention.

FIG. 1 is a perspective view

FIG. 2 is an explanatory side sectional view showing a state at a connection angle of 180 °.

[3] Description side cross-sectional view of the state of the connection angle 2 [Theta] ₁

FIG. 4 is a front view of an enlarged diameter portion.

FIG. 5 is an explanatory view in a case where a pipe connecting portion is rotated by a handle.

FIG. 6 is an explanatory perspective view of a conventional example.

[Explanation of symbols]

 1 Universal joint 12,13 Pipe connection part 14,15 Connection end face 16 Annular groove 17 Coated flange 20 Large diameter part 21 Sliding flange 22,23 Handle fitting hole 25 Handle

Claims (1)

(57) [Scope of request for utility model registration] 1. A pipe connecting portion rotatably interconnected via a connecting end surface inclined at a predetermined angle, and one of the pipe connecting portions has an outer periphery near the connecting end surface along the connecting end surface. An annular groove is formed, and a coating flange is projected from the outside of the annular groove, and the enlarged diameter portion is extended from the connection end face of the other pipe connection portion. One of the pipe joints in a universal joint in which a slide flange along the end face is intermittently protruded and the slide flange of the other pipe connection is slidably fitted in the annular groove of the one pipe connection. And / or a handle fitting hole is formed in the outer periphery of the other pipe connection portion.