JPH07265973A - Joint rotatable in joining part and its formation - Google Patents

Abstract

PURPOSE:To self-correct error and to easily join tubes by forming contact regions in a slidable joint body consisting of an inner globular body and outer globular body which are slidably joined to each other at the same center. CONSTITUTION:A joint part A3 is constituted of a tubular joining part A1 and the inner globular body 2. A joining part B6 is constituted by integrally forming the outer globular body 4 which is slidably matched with the inner conglobation 2 at the same center and a tubular joining part B5. The slidable joint body C is formed by slidably joining the inner globular body 2 with the outer globular body 4. The inner globular body 2 and the outer globular body 4 have a dimensional margin so that the contact region W is formed in the slidable joint part C. In this way, the contact region W is constituted, so that joining parts 3, 6 can be rotationally swung and self-corrected even when rotation is deviated from a specified angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner duct joint, and more particularly to a joint having a rotatable joint.

[0002]

2. Description of the Related Art A curved pipe joint of a round duct joint which is generally used at a piping site is divided into an integral type and a multi-joint type, and the integral type is a tubular type. Two or three are formed by mutual welding etc. at a specified angle. In the multi-joint type, the prescribed pipe is formed by joining several surfaces that are inclined at a predetermined angle and molding it to the desired angle.This is the formation of ∧ and ∧ shapes where the cut edges of the inclined surface are opposite to each other. The joint surface is joined in a slightly circular shape with a polymer joint.

[0003]

At the piping site, the center of the pipe-to-pipe coincides, and the center-to-center error of the pipe-to-pipe is intentionally prepared before the construction work. There is a need for a joint that can accommodate unexpected tube-to-tube center errors. The above-mentioned conventional multi-joint can swivel about the center line perpendicular to the slanted surface, but since it is only a certain angle with respect to the swivel center, it swivels only outward from the center of the pipe to be spliced. Either the error in the center of the tube is extremely small, or it is forcibly joined. or,
The ∧ shaped joint is weak against turning and impact and is likely to fall off.

[0004]

As shown in FIGS. 1, 8 and 10, the present invention provides an inner spherical body 2, 2 ₁ , 2 ₂ having the same center, and a cover-shaped inner spherical body. Provided outer spherical body 4,
4 ₁ and 4 ₂ contact the joints C, C ₁ and C ₂ jointed with the A joints 5, 5 ₁ and 5 ₂ integrally formed with the inner spherical bodies 2, 2 ₁ and 2 ₂ and the joints C, C ₁ and C ₂ . The straight pipe joint pivot joint made up of the regions W, W ₁ and W ₂ which are capable of swinging at a slight angle from the standard shape is shown in FIG. 1 and the elbow 60 °. Elbow 90 ° is a curved pipe joint rotation joint of FIGS. 10 and 11. In addition, in the joining method for forming the straight pipe and the curved pipe joint turning joint, the fitting portion and the sliding portion are subjected to fold folding processing, and the other joining portions are formed by curling processing.

[0005]

The present invention, as shown in FIGS. 1 to 11, is a joined body in which the A joints 3, 3 ₁ , 3 ₂ and the B joints 5, 5 ₁ , 5 ₂ are jointed jointly at the same center. The contact regions W, W ₁ and W ₂ are formed on C, C ₁ and C ₂ , respectively.
W _{1, W 2} A socket.there _1,1 1, _{1 2} of the pivoting swing movement D,
The D ₁ and D ₂ application angle limit surfaces are relatively defined by the B joint portion 6,
6 ₁ and 6 ₂ are also provided to the outer spherical bodies 4, 4 ₁ and 4 ₂ , and the contact areas W, W ₁ and W ₂ are A joint portions 3,
A joint body C in which 3 ₁ , 3 ₂ and the B joint portions 6, 6 ₁ , 6 ₂ are slidably joined to each other in a securable and non-separable manner.
In C _{1, C 2,} A socket.there _1,1 1, _{1 2} and B socket.there _5,5 1, _{5 2} is adapted to be respectively fitted joint in the duct side to be connected.

[0006] Next, Fig. 1 shows a joint rotation joint which is a straight pipe joint, and one A joint portion 3, 3 ₁ , 3 ₂ is joined by the contact regions W, W ₁ , W ₂ to form a joint C, C. _1. Rotate the swinging motion based on the center of ₁ , C ₂ D, D ₁ , D ₂
Is possible.

Further, FIGS. 8 and 9 show a B joint portion 5 ₁ formed on a joint C ₁ of a joint pivot joint having a defined elbow 60 °, whereas one A joint portion 3 ₁ is Normal form 60 °
And 30 around the 30 ° line from the center of the bonded body C ₁
A pivoting swing D _{1 of} ° is possible.

[0008] Further, FIG. 10, FIG. 11 is a specified type elbow 90 ° socket.there pivot joint, is A socket.there _{1 2} and the center of the B socket.there _{5 2} in the center in order to effectively position the contact area _{W 2} intersects quarter circle take, take a defined angle of 90 ° around the centerline diameter radius of a socket.there 1 ₂ is equal to the B socket.there 52 on the diagonal line and B socket.there 5 ₂ of intersecting quarter circle. The effective contact area W ₂ is a width that passes through a point where the joint C ₂ is circular around the intersection and contacts the joint C ₂ on the inside of 90 ° formed by the A joint 1 ₂ and the B joint 5 _2. The effective pivoting movement D ₂ of the contact area W ₂ is 30 °.

As described above, the straight pipe joint turning joint and the joints of the elbow 60 ° and elbow 90 ° joint turning joints each have their own specific swinging motions, and the pipe-to-pipe described above. It has a self-correction and a swinging action for the center error of.

[0010]

EXAMPLES Examples of the present invention will be described below. In the present invention, a galvanized steel sheet or a stainless steel sheet having a heat of 0.5 mm to 0.6 mm is formed by press-pressing a diameter of 100 mm to 200 mm into a required standard shape. First, swinging motions D, D ₁ , D _{2 are performed.} inner spheroids _2,2 1 based on, _{2 2} Setsusai surface 17 _1, 17 ₂ calculation, i.e., contact area W,
W _{1, W 2} spheroids _2,2 1 among you set, _{2 2} and A socket.there _1,1 1 to _{1 2} and integrally, A socket.there unit _3,3 1,
32 is divided into _two as shown in FIG.
The first step of press-pressing and forming the rolled folding margins 8, 8 ₁ and 8 _{2 provided} to ₁ and 7 ₂ , respectively.

The two halves that have been pressed by pressing are combined as shown in FIG. 4, and the winding folding margins 8, 8 ₁ , 8 shown in FIG.
₂ side by side, first by means of these associated operations of a punch 9 mounted on the press, a knockout 11 facing the punch 9 and a blank holder 10 pressing down the punch 9, first a curling process 13 is formed and subsequently shown in FIG. In the second step, the groove 12 is folded and folded as described above.

B joints 5, 5 ₁ , 5 ₂ and outer spherical bodies 4, 4
_{1, 4 2} are calculated to there together, B socket.there portions ₆ 1, _{6 2} Setsusai surface _{7, 7} 1, _{7 2,} the contact area _{W, W} 1, W
₂ is set and divided into two as shown in FIG.
_{1, 7 2} wound folding passages _7,7 1, _{7 2} wound folding passages _8,8 1, _{8 2} that granted the third step of pressing the pressing process respectively.

[0013] The press pressing processed bisected bodies A joint opening _1,1 1, _{1 2} of the inner spherical body _{2, 2} 1, _{2 2} Kutsugaekomu united to the inner spherical body _{2, 2} 1, 2 Located inside ₂ and the knockout 11 as shown in FIG. 5, and also the B joints 5, 5 ₁ ,
5 as shown in the _second positioned inside Figure 6, and inlaid an integral mold Mizotagane mold 12, the winding folding passage 8,8
_As shown in FIG. 7, the overlapping portions ₁ and 8 ₂ are curled 13 with a punch 9 on the outside of the outer spherical bodies 4, 4 ₁ and 4 ₂ .
The fourth step in which 13 ₁ and 13 ₂ and B joints 5, 5 ₁ and 5 ₂ are pressed into the collapsing process 14 inside the joints 5 and the seam folds are formed inside to form each of the two halves. It consists of

FIG. 10 shows the elbow 90 ° of the joint for turning the joint.
Is. This joint is set to the conjugate C ₂ contact area W ₂
To take the Setsusai surface 17 ₂ enable the R according to A socket.there 1 ₂ and B socket.there 5 ₂ eggplant central angle 90 ° taking in phi, around the intersection of the 45 ° line of the central angle Outer sphere 4 ₂
To form.

The fourth step molding after the end A socket.there _1,1 1 described above, _{1 2} and B socket.there _5,5 1, _{5 2} each rib 1
5, 15 ₁ and 15 ₂ and the tube ports 16, 16 ₁ and 16 ₂ are molded with a molding roller.

[0016]

By setting the contact area, the joint can be swung dynamically from the nominal (specified) angle, so that the error that often occurs in the pipe-to-pipe is self-corrected and the pipe joint is reasonably free. They can be joined together, and pipe connection work is easy even in narrow spaces between existing buildings.

A joint body in which the inner spherical body and the A joint are integrated by winding and splicing, and the outer spherical body and the B joint are covered and wound and spliced, keeps airtightness and slides. The contact area provided with this is characterized in that the A-joint can be slightly swung from the standard shape. Since the above-described joining method is full-width winding joint, in welding which is another joining method, the welded portion is rusted or corroded to contaminate the air flow in the duct. Absent.

[Brief description of drawings]

1 is a side view of a straight pipe joint rotation joint.

[Fig. 2] Fig. 2 a Fig. 1 cross-sectional view of the straight pipe joint turning joint taken along line a-a.

FIG. 3 is a perspective view of an A joint 1, ₁ , 1, ₁₂ halves.

FIG. 4 is a cross-sectional view taken along the line d-d of the A-joint ₁ , 11 and ₁₂ shown in FIG.

FIG. 5 is an explanatory diagram of a curling method.

FIG. 6 is an explanatory view of a seam folding method.

FIG. 7 is an explanatory diagram of curling processing and folding processing.

FIG. 8 is a side view of an elbow 60 ° joint rotation joint.

FIG. 9 is a top view of the joint for rotating the elbow 60 °.

FIG. 10 is a side view of a joint for rotating the elbow 90 °.

FIG. 11 is a top view of a 90 ° elbow joint pivot joint.

[Explanation of symbols]

C, C ₁ , C ₂ ……………………………… Jointed body D, D ₁ , D ₂ ………………………… Swing head W, W ₁ , W ₂ …… ………………………… Contact area φ ………………………………………………………… Tube diameter (R) 1, 1 ₁ , 1 ₂ ………… ………………… A joint 2, 2 ₁ , 2 ₂ …………………………… Inner spherical body 3, 3 ₁ , 3 ₂ …………………………… A Joint part 4, 4 ₁ , 4 ₂ ………………………… Outer spherical body 5, 5 ₁ , 5 ₂ ………………………… B Joint part 6, 6 ₁ , 6 ₂ ................................. B socket.there portions 7 _{1, 7 2} ................................. bent brim 8,8 _{1, 8 2} ............ ………………… Roll-folding allowance 9, ……………………………………………………… Punch 10, ……………………… …………………………………… Blank holder 11, …………………………………………………… Knockout 12, ………………………………… ……………………… Mizota mold 13, 13, ……………………………………………… Curling process 14, …………………………… …………………………… Haze fold processing 15, 15 ₁ , 15 ₂ …………………… Rib 16, 16 ₁ , 16 ₂ …………………… Pipe mouth 17 , 17 ₁ , 17 ₂ ………………………… Cutting surface

Claims (2)

[Claims] 1. An A joint portion (3, 3 ₁ , 3) in which a tubular A joint (1, 1 ₁ , 1 ₂ ) and an inner spherical body (2, 2 ₁ , 2 ₂ ) are integrally molded. ₂ ) and the inner spherical body (2, 2 ₁ ,
2 ₂ on the outer circumferential surface of) the inner spherical body _{(2, 2} 1, _{2 2)} outer spheroids slidably sliding fit with the same center as _(4,4 1, 4
₂ ) and the B joints (6, 6 ₁ , 6 ₂ ) integrally formed with the tubular B joints (5, 5 ₁ , 5 ₂ ) are jointed jointly to form the inner spherical body ( 2, 2 ₁ , 2 ₂ ) and the outer sphere (4,
Contact regions (W, W ₁ , W ₂ ) are formed in the nodular joint (C ₁ , C ₁ , C ₂ ) of 4 ₁ , 4 ₂ ) and the A joint (3, 3) is formed.
_{1, 3 2)} a slight angle of swing motion than the specified type (D,
D ₁ , D ₂ ) is added to the joint pivot joint. 2. A joint rotation joint, comprising an A joint (3, 3 ₁ , 3 ₂ ) and a B joint (6, 6 ₁ , 6 ₂ ) which are jointed in a smooth manner. A winding folding margin (8, 8 ₁ , 8 ₂ ) is added to the bending edge portion (7, 7 ₁ , 7 ₂ ) in a shape divided into two in the central horizontal plane direction of the joint portion, and the contact area (W,
W ₁ and W ₂ ) are set by press-pressing and molding, and other divided bodies facing each other are also press-pressed by the same means to form, and the press-pressing two By combining the divisions, the winding folding margins (8, 8 ₁ , 8 ₂ ) are arranged on each side, and first, the knockout (11) and the punch (9) facing the punch (9) mounted on the press are pressed down. Curling is performed by these related operations of the blank holder (10), and finally a winding folding margin (8, 8 ₁ , 8 ₂ ) is formed on the inner side where the two divided bodies are combined,
With the groove metal mold (12), fold the folding process (14,
14 ₁ , 14 ₂ ) and the second stage, and the cut edge portion (7, 7 ₁ , 7 ₂ ) having a shape that is horizontally divided into two at the center of the B joint portion (6, 6 ₁ , 6 ₂ ). ) Winding and folding allowance (8, 8
_{No. 1} , 8 ₂ ) and the contact regions (W, W ₁ , W ₂ ) are set by press-pressing, and other divided bodies facing each other are also press-pressed by the same means. And the press-divided two-divided body into the A joint portion (1, 1 ₁ ,
1 ₂ ) inner spherical body (2, 2 ₁ , 2 ₂ ) is covered and united,
Inner spheres (2, 2 ₁ , 2 ₂ ) and B joints (5, 5 ₁ , 5)
₂ ) through which a slotted metal mold (12) is fitted, and the overlapped portion of the winding folding margins (8, 8 ₁ , 8 ₂ ) is held by a punch (9) with an outer spherical body (4, 4). ₁ , 4 ₂ ) Curling process (13) on the outside, B joint (5, 5 ₁ ,
5 ₂ ) is pressed by curling (13, 13 ₁ , 13 ₂ ) and then folded by collapsing (14, 14 ₁ , 14 ₂ ), and the seam folds are inwardly shaped with a grooved die (12). Molding,
A method for forming a joint for pivoting a joint, comprising the fourth step of forming the other side by the same means.