JPH051088U - Universal joint - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to facilitate adjustment of the bending angle and bending direction of the universal joint, and thus to facilitate piping. [Structure] A universal joint (11) is composed of a pair of pipe connecting portions (12), (13) rotatably connected to each other, and the pipe connecting portions (12), (13)
The connecting end faces (14) and (15) of the above are respectively inclined, and the main and auxiliary scales (30), (30) A and (3) are further attached to the pipe connecting parts (12) and (13).
1), (31) A, and the scale (30), (30) A, (31), (31) A
When is adjusted to a predetermined number, the number is set to be a bending angle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a universal joint in which the connection angle of a pipe can be freely adjusted.

[0002]

[Prior Art]

 Conventionally, for example, as shown in FIG. 11, the connecting end faces (4), (5) of the pair of pipe connecting portions (1), (2) are inclined at a predetermined angle θ, respectively, and the pair of pipe connecting portions (1) There is provided a universal joint (3) in which (2) is rotatably connected via flanges (6) and (7) forming the connecting end faces (4) and (5) (actually developed 59- No. 51286).

In the above-mentioned pipe connecting portions (1), (2), by rotating one pipe connecting portion (1) with respect to the other pipe connecting portion (2), the connection angle can be freely changed from 0 ° to 2θ. Adjustments will come out.

[0004]

[Problems to be solved by the device]

 However, in the above universal joint (3), even if the connection angle can be adjusted to the desired one, it is not clear where the apex of the bend is during construction, and in which direction the pipe top is facing. Since it was not possible to see it, correct piping construction was difficult. It is also difficult to arrange the bending direction of the self-supporting joint (3) in a desired direction.

[0005]

[Means for Solving the Problems]

As a means for solving the above-mentioned conventional problems, the present invention provides a pair of pipe connection parts (12) rotatably interconnected via connection end faces (14), (15) inclined at a predetermined angle θ. , (13), in the vicinity of the connection end face (14) of one pipe connection part (12), an annular groove (16) along the connection end face (14) is formed on the outer periphery thereof, and the other pipe connection part (14) is formed. The enlarged diameter portion (20) is extended from the connection end face (15) of 13), and the sliding flange (21) along the connection end face (15) is projected on the inner periphery of the end of the enlarged diameter portion (20). In the universal joint (11) in which the sliding flange (21) of the other pipe connecting portion (13) is slidably fitted in the annular groove (16) of the one pipe connecting portion (12), One or the other pipe connection part (12), (13) is connected to the connection end faces (14), (15) along the connection end faces (14), (15) along the connection end faces (14), (15). The main scales (30), (31) from 0 to 2θ in the range of 90 ° clockwise, and further outside the main scales (30), (31) Along the circumference of the pipe connection parts (12) and (13), subscales (30) A and (31) A from 0 to 2θ in the clockwise 90 ° range are attached to the peripheral surface. 2θ or 0 of the main scales (30), (31) and 0 or 2θ of the subscales (30) A, (31) A are on the same ridge, and the other or one of the pipe connection parts (13), From 0 to 2θ in the range of 90 ° counterclockwise along the connecting end faces (15), (14), with the central part of the inclination being 0 on the peripheral surface near the connecting end faces (15), (14) of (12). The main scales (31), (30) are attached to the outer peripheral surface of the main scales (31), (30) along the circumference of the pipe connection parts (13), (12). A sub-scale (31) A, (30) A from 0 to 2θ is attached in the range of 90 °, and 2θ or 0 of the main scale (31), (30) and the sub-scale (31) A, ( 30) When 0 or 2θ of A is on the same ridge line, and when the same numbers on the main scales (31) and (30) of both pipe connection parts (12) and (13) are combined, both numbers are the same. Gana the tube axis a _1, a ₂ Together to represent the angle a shall provide a universal joint (11) which indicates the position of the apex of the bend in the angle of each.

[0006]

[Action]

When the other pipe connecting part (13) is rotated with respect to the one pipe connecting part (12), assuming that the inclination angles of the connecting end faces (14) and (15) are θ, the angle formed by the pipe axis Can be automatically adjusted from 0 ° to 2θ. Therefore, if the scale of the main scale (30) of the pipe connection part (12) and the scale of the main scale (31) of the pipe connection part (13) are set to the same number (set as θ ₁ ), the pipe connection part (12) the angle between the tube axis a ₂ of the tube axis a ₁ and the pipe connection portion (13) of) is _{θ 1 (0 ≦ θ 1 ≦} 2θ). When the side surface of the universal joint (11) is viewed from directly above with the position of the main scale θ ₁ positioned right next to it, the universal joint (11) is bent at an angle θ ₁ and the pipe connecting portion is sub scale (30) (12) are on the same ridge line RL in sub-scale (31) the plane to the theta ₁ a in theta ₁ and the tube connection portion of the a (13), when the vertical pipe main scale theta apex of flexion can visually at _1, during or horizontal pipe can visually recognize the line of the tube top by sub scale theta _1.

At this time, the protrusions (22) and (23) of the one and / or the other pipe connecting portions (12) and (13) are used as clues for rotation. Then, with the relative rotation of the pair of pipe connecting portions (12) and (13), the sliding flange (21) of the other pipe connecting portion (13) has an annular groove of the one pipe connecting portion (12). (16) Slide inside. In this way, the sliding flange (21) of the other pipe connecting portion (13) is fitted into the annular groove (16) of the one pipe connecting portion (12) to form the pair of pipe connecting portions (12). ), (13) connection is rotatably locked.

[0008]

【Example】

 The present invention will be described with reference to an embodiment shown in FIGS. 1 to 10. The universal joint (11) has inner connecting end faces (14), (15) inclined at a predetermined angle θ (7.5 °). It consists of a pair of pipe connections (12), (13) that are rotatably interconnected via a pipe, one pipe connection (12) is formed with a socket (12) A, and the other pipe connection is formed. An insertion portion (13) A is formed in the portion (13), and a packing groove (12) B is formed in the receiving portion (12) A. A little outside from the connection end face (14) of the one pipe connection part (12), an annular groove (16) is formed along the connection end face (14) on the outer periphery of the pipe connection part (12), A coating flange (17) is provided on the outside of the annular groove (16), and a packing groove (18) to which a packing ring (19) is attached is formed on the inside of the annular groove (16). Further, a pair of protrusions (22), (22) having holes (22) A, (22) A are formed at an angle of 180 ° on the outer periphery of the receiving portion (12) A.

An enlarged diameter portion (20) is extended from the connection end surface (15) of the other pipe connection portion (13), and the inner diameter of the end portion of the enlarged diameter portion (20) is at the inner side as shown in FIG. A sliding flange (21) along the connecting end face (15) is intermittently projected, and a hole (23) is formed at an angle of 180 ° on the outer circumference of the expanded diameter portion (20) of the pipe connecting portion (13). ) A, (23) A pair of protrusions (23), (23) having A are formed.

In the above-mentioned pair of pipe connecting portions (12) and (13), on the peripheral surface of the covering flange (17) of the pipe connecting portion (12), the central portion of the inclination is set to 0 and the connecting end face (14) is formed. There is a main scale (30) from 0 to 2θ = 15 ° in a clockwise direction of 90 °, and the pipe connecting portion (12) is further provided on the outer peripheral surface of the pipe connecting portion (12). ) A sub-scale (30) A from 0 to 2θ = 15 ° is attached in a clockwise direction of 90 ° along the circumference of) starting from 2θ of the main scale (30), and diagonally in pairs. 15 or 0 of the main graduation (30) and 0 or 15 of the sub graduation (30) A are on the same ridge line, while the enlarged diameter portion (20) of the pipe connecting portion (13) is attached. The peripheral surface of the edge is marked with a main scale (31) from 0 to 2θ = 15 ° in the range of 90 ° counterclockwise along the connecting end face (14) with the central part of the slope as 0. The pipe connection part (13) is connected to the outer peripheral surface of the expanded part (20) by Along the circumference of the part (13), a subscale (31) A from 0 to 2θ = 15 ° is attached in the range of 90 ° counterclockwise, starting from the 2θ of the main scale (31), and diagonal. 2θ or 0 of the main scale (31) and 0 or 2θ of the subscale (31) A are on the same ridge.

In order to configure the universal joint (11) by connecting the pair of pipe connecting portions (12) and (13), the connecting end face (14) of one pipe connecting portion (12) is connected to the pipe connecting portion. (13) is inserted in the enlarged diameter portion (20), and the enlarged diameter portion (20) of the other pipe connecting portion (13) slides in the annular groove (16) of the one pipe connecting portion (12). Fit the flange (21) slidably. At this time, since the sliding flange (21) is discontinuous, it can be deformed and can be easily fitted. Since the outside of the gap (24) between the sliding flanges (21) is covered by the covering flange (17), dust, mud, etc. will enter from the connecting parts of the pipe connecting parts (12), (13). Is prevented.

In the above-mentioned universal joint (11), the projections (22), (22), (23) and (23) of the pair of pipe connecting portions (12) and (13) are used as clues as shown in FIG. (25) is fitted, or the pin (26) is attached to the holes (22) A, (22) A, (22) A of the protrusions (22), (22), (23) and (23) as shown in FIG. (23) A, (23) When fitted to A and rotated through the pipe (25) or the pin (26), the pipe axis a ₁ of the pipe connecting portion (12) and the pipe connecting portion ( It is possible to freely adjust the angle formed by 13) with the tube axis a ₂ , that is, the connection angle from 0 ° shown in FIG. 2 to 2θ = 15 ° shown in FIG.

That is, as shown in FIG. 7, when 0 of the main scale (30) of the pipe connection part (12) and 0 of the main scale (31) of the pipe connection part (13) are combined, As shown, the angle formed by the pipe axis a ₁ of the pipe connection part (12) and the pipe axis a ₂ of the pipe connection part (13), that is, the connection angle is zero. In this state, when the self-coupling (11) is viewed from directly above, as shown in Fig. 8, the subscale (30) A of the pipe connection part (12) and the subscale (31) of the pipe connection part (13) are indicated. The 0 of A is on the same ridge line RL _{1 in the} plane.

Then, as described above, the pipe connecting part (13) is rotated with respect to the pipe connecting part (12) to connect the main scale (30) 10 of the pipe connecting part (12) to the pipe connecting part (12) as shown in FIG. When the main scale (31) of the part (13) and 10 are combined, when the universal joint (11) is viewed from directly above as shown in FIG. 10, it is connected to the pipe axis a _{1 of the} pipe connection part (12) and the pipe connection. The angle θ ₁ formed by the portion (13) with the tube axis a ₂ , that is, the connection angle is 10 °. Then, the subscale (30) A 10 of the pipe connecting portion (12) and the subscale (31) A 10 of the pipe connecting portion (13) are on the same ridge line RL ₂ . In this way, after adjusting the connection angle to a desired value, the pipes to be connected are inserted and connected to the respective receiving ports (12) A, (13) A of the pipe connecting parts (12), (13). Normally, in the case of the above piping, horizontal piping in which the ridge line RL ₂ of the universal joint (11) is located at the top of the pipe is performed, but in the case of vertical piping, the position where the main scales (31) and (30) are combined (for example, 1 Since the apex of the bend passes through 0-10), you can see it and bring this position to the top of the pipe. Also, in the case of horizontal piping, the top line (ridge line RL ₂ ) passes through the position (eg 10 −10) where the sub-scales (31) A and (30) A are combined, so this should be visually checked while checking this position. Come to the top.

Other than this embodiment, the sub-scales are not necessarily diagonally attached to each other, and the main scales may be diagonally attached to each other. At that time, it is desirable to prevent mixed use by displaying one of the main scales in Kanji and the other in arithmetic. In the case of horizontal piping, the ridge line RL ₂ becomes the top of the pipe, so that the top of the pipe can be visually recognized and accurate piping can be performed easily. The protrusion may be provided on only one of the pair of pipe connecting portions (12) and (13). Further, the pipe connecting portion may be provided with an insertion opening or a receiving opening.

[0016]

[Effect of the device]

 Therefore, in the universal joint of the present invention, the connection of the pair of pipe connecting portions can be rotatably locked without using a separate engaging means, and if the numbers on the main scale are matched, the pair of pipe connecting portions can be connected. The parts are connected at the desired angle, but the connection angle can be visually recognized from above or from the side, and the main and sub-scales can be visually recognized even when the universal joint is vertically or horizontally piped. Can be easily adjusted to the correct position, which is extremely convenient for piping.

[0017]

[Brief description of drawings]

 1 to 10 show an embodiment of the present invention.

1 is a perspective view

FIG. 2 is an explanatory side sectional view showing a state where a connection angle is 0 °.

FIG. 3 is an explanatory side sectional view showing a state where a connection angle is 2θ.

[Fig. 4] Front view of the expanded portion

FIG. 5 is an explanatory diagram of a case where a pipe connecting portion is rotated by a pipe.

FIG. 6 is an explanatory diagram of a case where a pipe connecting portion is rotated by a pin.

FIG. 7 is an explanatory diagram of a scale when the connection angle is 0 °.

FIG. 8 is an explanatory view of a universal joint when the connection angle is 0 °.

FIG. 9 is an explanatory diagram of a scale when the connection angle is 10 °.

FIG. 10 is an explanatory view of a universal joint when the connection angle is 10 °.

FIG. 11 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) Expanding part (21) Sliding flange (30), (31) Major scale (30) A, (31) A Minor scale

Claims (1)

[Claims for utility model registration] [Claim 1] A pair of pipe connecting portions rotatably interconnected via a connecting end face inclined at a predetermined angle θ, in the vicinity of the connecting end face of one pipe connecting portion. An annular groove is formed along the outer peripheral surface along the connecting end surface, the expanded diameter portion is extended from the connecting end surface of the other pipe connecting portion, and the sliding flange along the connecting end surface is formed on the inner circumference of the end portion of the expanded diameter portion. In a universal joint in which the sliding flange of the other pipe connecting portion is slidably fitted in the annular groove of the one pipe connecting portion, the peripheral portion near the connecting end surface of the one or the other pipe connecting portion. The surface is provided with a main scale from 0 to 2θ in the range of 90 ° clockwise along the connecting end face, with the central part of the inclination being 0, and the outer peripheral surface of the main scale has a circle of the pipe connecting part. 0 to 2θ in the range of 90 ° clockwise along the circumference
2θ or 0 of the main scale and 0 or 2θ of the subscale are on the same ridge line, and the center of inclination on the peripheral surface near the connection end face of the other or one of the pipe connection parts A main scale from 0 to 2θ is attached in the range of 90 ° counterclockwise along the connecting end face with the part as 0, and the outer peripheral surface of the main scale is left along the circumference of the pipe connecting part. Around 90
A sub-scale from 0 to 2θ is attached in the range of °, 2θ or 0 of the main scale and 0 or 2θ of the sub-scale are on the same ridge line, and the same number of the main scale of both pipe connection parts. The universal joint is characterized in that, when combined, the number represents the angle formed by both pipe axes and the position of the apex of the bend at each angle.