JP2660428B2 - Branch pipe fitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention generally relates to a vehicle, or various machines and devices, and has a pipe diameter of about 20 m / m provided as a supply path for fuel, other refueling, air supply, and the like. The present invention relates to a T-shaped or cross-shaped branch pipe joint made of a metal pipe having a relatively small diameter as described below.

[Prior art] Conventionally, as this type of branch pipe joint, for example, FIG.
As shown, a diversion hole (23) provided in the peripheral wall of the main pipe (P ')
In the part, a branch pipe (▲ P^′ ₁▼) Saddle-shaped opening formed at the end on the side
The mouth wall (20) is formed by applying polymerization and soldering, or
Figures 17 (a) and (b) (Publication No. 56-16453)
As shown in the report, the eccentric shaft has a through hole (22)
A branch connection hole (24) communicating with the through hole is provided on the peripheral side.
The use of a joint body (21) cut and formed from a bar
The main pipe is located with a diversion hole (23) inside the through hole (22).
(P ″) and inserted into the branch connection hole (2
4) Branch pipe (▲ P^″ ₁▼) assembled to each hole circumference
Fig. 18 and Fig. 19
As shown in the figure, the main pipe (P
) And a through hole (34) on the peripheral side near the lower side.
Has an inner diameter substantially equal to the outer diameter of the drilled main pipe (P)
Located inside the through hole of the joint body (31) made of short pipe material
And at the same time, a branch pipe having substantially the same diameter as the main pipe (P).
(▲ P ₁▼) is in the original diameter state on the upper end side of the joint body
Attach to the branch connection port (32) to install the peripheral surface and the front
Periphery of the main pipe (P) with the through-hole (34) inserted and
On the inner peripheral side surface of the joint body (31) in a direction orthogonal to the through hole.
The contact surface with the main pipe (P) is soldered and configured.
Was something.

[Problem to be Solved by the Invention] However, in such a conventional technique,
In the case of the one shown in FIG. 16, it is necessary to perform positioning by temporary attachment such as spot welding prior to the soldering on the adhered superposed surface, which causes troublesome work in the soldering, and also requires the opening wall (20). ) Due to processing limitations, cannot be obtained sufficiently, and in addition, due to the structure that is merely applied and polymerized, it tends to cause insufficient soldering strength and cause leakage, and furthermore, the branch pipe side In addition, there is a problem that a restriction on the pipe diameter is inevitable.

In the case of FIGS. 17 (a) and (b),
The cost of the product is increased by the joint body (21) of the bar material, particularly by the eccentric cutting, and at the same time, the weight of the product is significantly increased.

 18 and FIG.
In the original diameter state of the upper end side by the short tube material as the hand body (31)
Branch pipe at the branch connection port (32) ₁▼) Assembly
The pipe diameter on the technical pipe side is substantially the same as that of the main pipe (P).
Limited to things and of course have to be restricted
Has a poor problem. Or just a cylinder
The joint body (31) made of
Leakage often occurs due to vibrations etc.
There was a tendency to run.

The present invention has been made in view of the above-mentioned problems of the prior art, and by a rib formed by a flat overlapping wall near both the left and right sides of a part of the peripheral wall of a short tube,
In addition to improving the solder welding strength, the rigidity of the entire joint can be increased to eliminate the fear of leakage, and furthermore, it is possible to arrange a branch pipe having the same diameter or a different diameter from the main pipe as desired. It is an object of the present invention to provide a branch pipe joint capable of relaxing the restriction on the pipe diameter on the pipe side, further reducing the product cost by using a pipe material as a joint body, and reducing the weight of the product.

[Means for Solving the Problems] To achieve the above object, a first embodiment of the present invention provides:
It consists of a joint body achieved by a relatively large-diameter, short-diameter tube material having a branch connection hole formed in its circumferential wall, and is engaged with the main pipe together with the inner peripheral surface of the joint body diametrically opposed to the branch connection hole. The joint body leaving the cylindrical hole and the branch cylindrical hole so as to include a cylindrical hole, and to have a branch cylindrical hole which is connected to the cylindrical hole and extends to the branch connection hole in a direction substantially orthogonal to the branch connection hole. Are pressed against each other so as to abut flatly to form a rib parallel to the axis of the joint main body, and a gap is formed between one main pipe having a flow dividing hole in a peripheral wall or an opposite pipe end. The two main pipes that are held and arranged in series are inserted into the pipe hole so that the branch hole or the interval is located to face the branch pipe hole, and a branch pipe is assembled in the branch pipe hole. Then, the main pipe and the branch pipe are collectively soldered to the branch pipe hole and the inner peripheral surface of the pipe hole. A branch pipe joint constructed Te is intended to be subject matter, further provided with a plurality of branched tubular hole in the joint body,
The branch pipes are integrally welded to the respective branch cylinder holes.

Next, a second embodiment of the present invention comprises a joint body composed of a relatively large-diameter, short tube having a pair of diametrically formed through-holes formed in the circumferential wall thereof. Flattening the peripheral portions of the through-holes of the joint body by mutually pressing the peripheral portions of the joint main body while leaving the branch connection cylindrical holes so as to have a branch connection cylindrical hole for branch pipe engagement extending from at least one open end to the inside thereof A rib parallel to the axis is formed in the joint body by abutting in a shape, and a main pipe having a branch hole in a peripheral wall portion is formed in the through hole so that the branch hole is located opposite to the branch connection cylindrical hole. Inserting and engaging, further assembling a branch pipe into the branch connection cylinder hole, the inner peripheral surface of the branch connection cylinder hole and the inner peripheral edge of the through hole to which the main pipe is engaged, and the inner surface of the joint main body. The gist of the present invention is a branch pipe joint in which the contact surfaces with the main pipe are each welded together by batch welding. The joint body in a plurality of branch connection tube hole, in which each said branch pipe to a branch connection tube hole of constituting collectively 鑞溶 wear.

[Operation] Since the present invention has such a configuration, the main pipe is attached to the shaft core hole of the joint body made of the pipe material, and the branch pipe is simultaneously attached to the branch connection hole to form a partial peripheral wall where the branch connection hole is located. In the vicinity of the left and right sides, or in the case of a plurality of branched branch pipes, with the peripheral surface of the branched cylindrical hole and the reduced diameter cylindrical hole formed by polymerization by pressing including between the branch connection holes. Or a joint pipe made by batch soldering, or by reducing the diameter of the main pipe in the through-hole of the joint body with a short pipe material, and at the same time reducing the diameter by flat pressing on the partial peripheral wall near the upper peripheral edge Since a branch pipe will be assembled to the hole and it will be constructed by batch brazing,
It reduces the trouble of soldering, and the ribs formed by the flat overlapping wall on the part of the peripheral wall improve the soldering strength and increase the rigidity of the whole joint, so that there is no fear of leakage. It is also possible to arrange a technical pipe having the same diameter or a different diameter to ease the restriction on the diameter of the pipe, and further reduce the product cost by configuring the pipe as a joint body,
In addition, the product can be made lightweight.

[Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings, but the same components are denoted by the same reference numerals. 1 is a plan view of a branch pipe joint according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a sectional view taken along the line AA of FIG. 1, and FIG. FIG. 2 is a sectional view taken along the line BB, FIGS. 5 and 6 are views corresponding to FIG. 4 according to another embodiment, FIG. 7 is a plan view showing still another embodiment, and FIG. FIG. 9 is a plan view of a branch pipe joint according to still another embodiment, FIG. 9 is a top view of FIG. 8, and FIG.
FIG. 11 is a cross-sectional view taken along the line CC, FIG. 11 is a cross-sectional view taken along the line DD in FIG. 9, FIG. 12 is a view corresponding to FIG.
FIG. 14 is a plan view showing still another embodiment, FIG. 14 (A) is a plan view showing still another embodiment, and FIG. 14 (B) is FIG. 14 (A).
14 (c) is a bottom view of FIG. 14 (a), FIG. 14 (d) is a top view of FIG. 14 (a), and FIG. FIG. 14 is a diagram corresponding to FIG. 14 (b) of the embodiment. First, in FIGS. 1 to 7, (1) denotes a joint main body, which is formed by a relatively large-diameter, short-diameter pipe material having a branch connection hole (7) formed in a peripheral portion thereof. Pressing the right and left sides near the axial center of the part of the peripheral wall where 7) is located in a direction opposite to each other by pressing or the like in a direction facing each other while leaving the inserted branch connection hole (7) near the center. The ribs (2) are formed by overlapping with each other, the branch connection hole is formed as a branch cylinder hole (3), and the longitudinal axis hole is communicated with the branch cylinder hole (3) with the pressing. The joint body (1) is configured as the formed cylindrical hole (4), and then the core metal or the like inserted into the branch connection hole (7) is taken out. In the cylindrical hole (4), the main pipe (P) having a flow dividing hole (5) in the peripheral wall portion is arranged so as to hold the space (5 ') at the flow dividing hole portion or at the opposite end of the pipe. The space between the two main pipes (P) is inserted and engaged with each other, and the branch pipe (Po) is further connected to the branch pipe hole (3) at the pipe end by the branch hole (5). And the main pipe (P) and the branch pipe (Po) are connected to the branch pipe hole (3) and the pipe hole (4), respectively.
It is made by batch welding with the peripheral surface of the hole. (6) is an annular projection wall provided on the outer peripheral surface near the attachment of the main pipe (P) or the assembling of the branch pipe (Po) as necessary, to facilitate positioning inside the joint body (1). The purpose is to improve the solder welding strength and airtightness.

The main body (1) of the main pipe (P) and the branch pipe (Po)
When the main pipe (P) and the branch pipe (Po) are attached to the branch connection hole (7), the branch connection hole (7) is installed. In the vicinity of the left and right sides of the part of the peripheral wall (2), where it is located, the ribs (2) are formed by pressing in a drawing shape in the opposite direction by press working to form a rib (2), and the main pipe (P) and the branch pipe (Po). It is a matter of course that the branch cylindrical hole (3) and the reduced-diameter cylindrical hole (4) may be configured to be integrally welded to the peripheral surface of each of the above-mentioned branch cylindrical holes (3) and the reduced-diameter cylindrical holes (4). It is possible to arrange not only the same diameter as the main pipe (P) but also a branch pipe (Po) having a small diameter or a large diameter. Further, a plurality of the branch connection cylindrical holes (3) are provided, and a plurality of branch connection cylinder holes (3) are provided. Pipe joints having multiple branch paths by collectively brazing the branch pipes (Po) into the branch cylinder holes (3) And it may be it is a matter of course.

Next, in FIGS. 8 to 13, (1) denotes a joint body, which is formed by a relatively large-diameter short pipe material having a diametrical through hole (8) formed in a peripheral side portion thereof in the axial direction. A rib is formed by pressing a part of the peripheral wall near the mouth edge flat by pressing or the like.
And the reduced diameter opening is formed as a branch connection cylindrical hole (9). The branch hole of the main pipe (P) having the flow dividing hole (5) in the peripheral wall portion is penetrated and engaged with the through hole (8), and further the branch connection cylindrical hole (9) is engaged. A branch pipe (Po) smaller in diameter than the main pipe (P) is assembled to the branch hole (5) with its pipe end facing the peripheral pipe with the branch connection cylinder hole, and the main pipe (P). And the joint body (1) intersecting the through-hole of the through hole (8)
The contact surfaces with the main pipe (P) on the inner peripheral side surface of each of the above are respectively formed by batch soldering. (6) is an annular projection wall provided on the outer peripheral surface near the insertion of the main pipe (P) or the assembling of the branch pipe (Po) as necessary, similarly to the embodiment of FIG. 1) It is intended to facilitate positioning inside and improve the soldering strength and airtightness.

The main body (1) of the main pipe (P) and the branch pipe (Po)
When the main pipe (P) is attached to the through-hole (8) and the branch pipe (Po) is attached to the upper port, a part of the peripheral wall near the port peripheral end in the axial direction is attached. May be pressed flat to form a rib (2), and the diameter may be reduced to form a branch connection cylindrical hole (9) for batch soldering. 14 (a) to 14 (d), a branch pipe (Po) having the same diameter or a large diameter as the main pipe (P).
It is also possible to arrange. That is, in FIGS. 14 (a) to (d), when the branch pipe (Po) having the same diameter or more is provided, the joint body (1) having a larger diameter than the branch pipe (Po) is used, and the main pipe (P) is used. ) Is pressed and flattened into an oval or elliptical shape whose long side is a line parallel to the axis connecting the centers of the through holes (8, 8) in advance so that the outer peripheral surface of the joint body (1) and the inner peripheral surface of the joint body (1) are in contact with each other. Thereafter, the ribs (2) are formed by flat pressing, or at the same time as the formation of the ribs (2), pressed and flattened into an elliptical or elliptical shape as described above, and then are collectively soldered. Further, without pressing and flattening the elliptical or elliptical shape, the opposite end (10) of the branch connection cylindrical hole (9) of the joint body (1) is formed with a rib (2) as shown in FIG. Simultaneously or in a separate step, it may be pressed flat and then collectively soldered. Furthermore,
A plurality of the branch connection cylinder holes (9) are formed, and each of them is connected to the flow hole (5) on the main pipe (P) side to form a plurality of branch pipes (P).
It goes without saying that a branch pipe joint composed of a branch path according to o) may be formed.

Although the embodiments described above are all related to the T-shaped branch pipe joint, the present invention can be applied to the cross-shaped joint, or the branch pipe (Po) and the main pipe (P) can be inclined at a certain angle instead of perpendicular to each other. It is very easy to arrange.

[Effects of the Invention] As described above, in the branch pipe joint according to the present invention, the main pipe (P) is formed in the longitudinal axial hole of the joint body (1) made of pipe material, and the branch pipe is simultaneously formed in the branch connection hole (7). Attach a pipe (Po) to the vicinity of the left and right sides of a part of the peripheral wall where the branch connection hole is located, or, if a plurality of branch branch pipes (Po) are used, connect between the branch connection holes (7). The main pipe (P) and the branch pipe (Po) are integrally welded to the branch pipe hole (3) and the reduced-diameter pipe hole (4) formed by polymerization by pressing including Alternatively, the main pipe (P) is simultaneously reduced in diameter by a flat pressing on a part of the peripheral wall near the peripheral end in the axial direction at the through hole (4) of the joint body (1) made of a short pipe material. The branch pipes (Po) are assembled to the branch connection cylindrical holes (2), respectively, and are assembled by batch soldering. The rib (2) formed by a flat overlapped wall at a part of the peripheral wall can improve the soldering strength and increase the rigidity of the entire joint to eliminate the fear of leakage. The restriction on the pipe diameter on the side of the branch pipe can be relaxed, for example, by arranging a branch pipe having the same diameter or a diameter different from that of the main pipe (P), if desired. This is an extremely useful branch pipe joint, for example, because the cost of the product can be reduced by the configuration using the pipe material of (1), and the product can be lightened by the relatively thin pipe material.

[Brief description of the drawings]

FIG. 1 is a plan view of a branch pipe joint showing one embodiment of the present invention,
2 is a side view of FIG. 1, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 4 is a cross-sectional view taken along the line BB in FIG. 2, and FIGS. FIG. 4 is a view corresponding to FIG. 4, FIG. 7 is a plan view showing still another embodiment, FIG. 8 is a plan view of a branch pipe joint according to still another embodiment of the present invention, and FIG. 8 is a top view of FIG. 8, FIG. 10 is a cross-sectional view taken along line CC of FIG. 8, FIG. 11 is a cross-sectional view taken along line DD of FIG. 9, and FIG.
FIG. 13 is a plan view showing still another embodiment, and FIG.
FIG. (A) is a plan view showing another embodiment, and FIG. 14 (B).
14 (a) is a sectional view taken along line EE of FIG. 14 (a), and FIG.
14 (a) is a bottom view, FIG. 14 (d) is a top view of FIG. 14 (a), FIG. 15 is a diagram corresponding to FIG. 14 (b) of still another embodiment,
FIGS. 16 and 17 (a) are partially cutaway sectional views of a conventional branch pipe joint, and FIG. 17 (b) is FF of FIG. 17 (a).
18 is a plan view of a branch pipe joint according to another conventional example, and FIG. 19 is a partially cutaway sectional view taken along line GG of FIG. (1) ... joint body, (2) ... rib, (3) ... branch tube hole, (4) ... tube hole, (5) ... branch hole, (5 ') ...
... spacing, (7) ... branch connection hole, (8) ... through hole,
(9)… Branch connection cylinder hole, (P)… Main pipe, (Po)…
Branch pipe

Claims (4)

(57) [Claims] 1. A joint body (1) composed of a relatively large-diameter, short-diameter pipe material having a branch connection hole (7) formed in a circumferential wall thereof. A branch extending to the branch connection hole (7) in a direction substantially orthogonal to the cylinder hole so as to have a main pipe (P) engaging cylinder hole (4) together with an inner peripheral surface of the joint main body facing the joint body; Tube (Po)
Peripheral portions of the joint body are pressed against each other so as to have a flattened shape by leaving the tubular hole and the branched tubular hole so as to have the engaged branched tubular hole (3), and are parallel to the axis of the joint body. One main pipe (P) having a rib (2) formed therein and having a flow dividing hole (5) in a peripheral wall portion or two main pipes (2) arranged in series with an interval (5 ′) at an opposite end of the pipe ( P) is inserted into the cylinder hole (4) such that the branch hole (5) or the interval (5 ′) is located opposite to the branch cylinder hole (3), and further the branch cylinder hole (3) is inserted. ) Portion, a branch pipe (Po) is assembled, and the main pipe (P) and the branch pipe (Po) are welded together to the inner peripheral surfaces of the branch cylinder holes (3) and (4). A branch pipe joint characterized by the above-mentioned. 2. The joint body (1) is provided with a plurality of branch cylinder holes (3), and the branch pipes (Po) are welded to the respective branch cylinder holes (3) by batch soldering. The branch pipe joint according to claim 1. 3. A pair of diametrically extending through holes (8) in the circumferential wall.
Of a joint body (1) constituted by a relatively large diameter short pipe material having a hole formed therein, and a branch pipe (Po) extending from at least one open end of the joint body to the inside thereof. The periphery of the through-hole (8) of the joint main body is pressed against each other and brought into flat contact with the joint main body while leaving the branch connection cylindrical hole so as to have the branch connection cylindrical hole (9). The main pipe (P) having a rib (2) parallel to the main pipe and having a flow dividing hole (5) in the peripheral wall portion is positioned so that the flow dividing hole (5) faces the branch connection cylindrical hole (9). It is inserted into the through hole (8) to be engaged, and further, the branch pipe (P) is inserted into the branch connection cylindrical hole (9).
o), the inner peripheral surface of the branch connection cylindrical hole, the inner peripheral edge of the through hole (8) to which the main pipe (P) is engaged, the inner surface of the joint body (1), and the main pipe (P). Characterized in that the contact surfaces of the two are welded together at once to form a branch pipe joint. 4. The continuation hand main body (1) is provided with a plurality of branch connection cylinder holes (9), and the branch pipes (Po) are welded to the respective branch connection cylinder holes (9) by batch soldering. The branch pipe joint according to claim 3, characterized in that: