JPH09317976A - Duct connecting tool and duct connected thereby - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the installation work of a connecting tool, insert a duct in the connecting tool having an appropriate insert dimension, and prevent the duct from being slipped off from the connecting tool after execution. SOLUTION: This duct connecting tool comprises a cover body 1 and a base 2 covered with this cover body 1, passing holes 1a and screw holes 2a are formed in this cover body 1 and this base 2, respectively, and the passing holes 1a and the screw holes 2a are connected to each other by screws 3. The connecting part 21 of the base 2 has T-shaped cross sectional engaging parts 22 and stoppers 23, mounting holes 22a are opened in these engaging parts 22, therefore this duct connecting tool can be screwed on a wall by screws 5. The groove shaped fitting recessed part of a duct can be engaged with the connecting part 21 of the base 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct connector and a duct connected by the connector.

[0002]

2. Description of the Related Art Conventionally, in order to connect ducts, linear connectors called sockets, L-shaped connectors called elbows, and cheeses are called according to the number of openings for connecting them. There are various shapes such as a T-shaped connector. And
All of these connecting tools are composed of two parts which are divided into a lid and a base, and the lid and the base are connected to each other by a set screw to form a tubular shape. A duct is inserted and the ducts are connected to each other via the connecting tool. In this connection work, first, the base of the connecting tool is screwed to a wall, etc., then the end of the duct is inserted into this base, and finally the lid is screwed to the base. is there. Alternatively, the base is screwed to the wall, the lid is screwed to the base to complete the connector, and then the end of the duct is inserted into the opening of the connector.

[0003]

However, when connecting ducts at a high place in the conventional duct connector, a ladder is used to reach a predetermined height, and the base of the connector is first screwed to a wall or the like. Stop, then go down once, take the duct up the ladder again, and fit the end of this duct into the groove of the base, where the lid is screwed to the base. is there. Furthermore, the duct connected by the connector is simply inserted into the open end of the connector as described above,
Since there is no configuration to hold this connection state, the insertion dimension is likely to be insufficient, and if the insertion dimension of the duct is insufficient, the duct often comes off from the connector after construction, and The workability of dimension matching was also extremely poor.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to facilitate the attachment work of the connector, and to insert the duct into the connector with proper insertion dimensions as designed, Another object of the present invention is to provide a duct connector which does not come off from the connector after construction and a duct which is connected by the connector.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION A feature of a duct connecting tool according to the present invention is that it comprises a lid and a base that covers the lid and is connectable to the base, and a connecting portion is formed at an opening edge portion of the base. The connecting portion includes an engaging portion formed so that the end of the duct can be inserted in the depth direction from the opening edge portion and a stopper portion formed at the rear end of the engaging portion. The engaging portion is provided with a mounting hole.

Further, a feature of the duct according to the present invention is that the duct is connected by the above-mentioned duct connector, and the shape thereof is tubular, and at least one end of the duct expands from the opening to the inside. The fitting recess of the cross-section recess is integrally formed, and the fitting recess can be engaged with the engaging portion of the base. Further, another characteristic of this duct is that it is divided into a lid and a bottom, and the lid and the bottom plate can be engaged with each other by an engaging means.

[0007]

EXAMPLES Examples will be described with reference to the drawings.
1 to 3 show a first embodiment, which is an embodiment of a linear connector A called a socket in this embodiment. The structure of the connector is composed of a lid 1 and this lid. It is composed of a base 2 to be covered, and through holes 1a, 1a are formed at left and right symmetrical positions on both side edges of this lid. A screw hole 2a is formed in the base 2 at a position corresponding to the through hole 1a of the lid 1, and a space corresponding to the length of the base is provided between both opening edge portions of the base 2. A connecting portion 21 is formed. The structure of the connecting portion 21 is such that the engaging portions 22, 22 having a T-shaped cross section are integrally formed from one of the opening edge portions toward the other opening edge portion, and further, the middle portion of the engaging portions. Stopper part 2
3 is integrally formed, and mounting holes 22a, 22a are formed in each of the engaging portions. And base 2
To combine the lid 1 with the lid 1, the edge of the lid 1 is aligned with the edge of the base, the screw 3 is inserted into the through hole 1a of the lid, and the screw hole 2a of the base 2 is further inserted. The lid and the base are integrally connected and united by being screwed into.

FIG. 2 shows a duct B which is connected by the connecting tool shown in FIG. 1. This duct has a lid 4 and a bottom 4.
It is formed into a tubular shape by connecting and combining with 0, and locking pieces 4 bent inward are formed on both side edges of the lid body.
a and 4a are integrally formed, and engaging portions 40a and 40a are also integrally formed on both side edges of the bottom body. And
The engaging pieces 4a, 4a of the lid 4 are the engaging portions 40a, 40 of the bottom body.
By engaging with a, the duct B becomes cylindrical as described above. On the outer peripheral surface of the bottom surface of the bottom body 40 of the duct B, a groove-shaped fitting recess 41 is integrally formed in the axial direction, and the shape of this fitting recess is the opening 41a.
The groove portion 41b is formed so that the inside thereof is enlarged. The groove 41b has a shape capable of being fitted and engaged with the T-shaped engaging portion 22 of the base 2 shown in FIG. A through hole 41c is formed on the upper surface of the fitting recess 40,
The position of this through hole corresponds to the mounting hole 22a formed in the engaging portion 22 of the base 2. The fitting recess 4
1 may be formed over the entire length of the duct B, but at least the end of the duct may be formed to have a length that can be sufficiently fitted into the connecting portion 21 of the base 2.

Next, the work of attaching the duct B to a wall will be described. First, the connecting portion 21 of the base 2 of the connecting tool A
The bottom body 4 of the duct is attached to each of the engaging portions 22 and 22 of the
The fitting recess 41 at the tip of 0 is fitted and provisionally connected. The connection state at this time is a state in which the groove portion 41b of the bottom body 40 of the duct B is engaged in a state of being fitted around the engagement portion 22 of the base 2, and the tip of the duct is in contact with the stopper portion 23. Is.
Therefore, the lid body 1 of the connecting tool A and the lid body 4 of the duct B are held, and the base 2 in the temporarily connected state and the bottom body 40 of the duct are held together and lifted to a predetermined mounting position on the wall. Therefore, the screw 5 is inserted from the through hole 41c of the bottom body 4 of the duct B, further penetrates the mounting hole 22a of the base 2, and is screwed into the wall surface to temporarily connect the base and the bottom of the duct. The body 40 and the wall surface are fixed by screwing. Therefore, the engaging portion 40a of the bottom body 40 of the duct B is engaged with the engaging piece 4a of the lid body 4 to make the duct cylindrical. Therefore, the edge of the lid 1 is joined to the edge of the base 2 and joined, the screw 3 is inserted into the through holes 1a, 1a of the lid, and this screw is screwed into the screw holes 2a, 2a of the base 2. By doing so, the lid is screwed to the base. In this way, as shown in FIG. 3, the two ducts 4 and 4 are connected by the connecting tool. Of course, when connecting three or more ducts B through a plurality of connecting tools A, only the bottom body 40 of this duct is connected to the two connecting portions 21 of the base.
After temporarily connecting the base and the bottom body of the duct to the wall surface with screws 5, the engaging portions 40 of all the bottom bodies 40 are connected.
The locking piece 4a of the lid 4 may be engaged with a to form a tubular shape, and finally the lid 1 may be coupled to the base 2 of each connector A by the screw 3. In this way, the ducts 4 are sequentially connected via the connecting tool.

Next, a second embodiment will be described with reference to FIGS. FIG. 4 shows a connector A called T type (cheese).
In this embodiment, the structure is composed of a lid 6 and a base 7 covered by the lid, and a through hole 6a is formed in the lid. The base 7 has a through hole 6a in the lid 6.
The screw holes 7a are formed at the positions corresponding to, and the connecting portions 71 are formed at the three opening edges of the base. Each of the connecting portions 71 has an engaging portion 72 having a T-shaped cross section formed integrally with each of the opening edge portions in the depth direction, and further, a rear end of each engaging portion. A stopper portion 73 is formed in each of the engaging portions, and a mounting hole 72a is formed in each of the engaging portions. The duct connected by the connecting tool Aa shown in FIG. 4 has the same structure as the duct B shown in FIG. 2, and the shapes thereof are the lid body 4 and the bottom body 4.
A fitting concave portion 4 having a cross-sectional concave portion, which is a tubular shape in which 0 is connected and at least one end of which is larger in the inside than in the opening.
1 is integrally formed.

Next, the work of mounting the duct B in this embodiment on a wall will be described. This mounting work is substantially the same as the mounting work in the above embodiment. First, the duct B is attached to each of the three connecting portions 71 of the base 7.
The fitting recesses 41 of the bottom body 40 are fitted and temporarily connected.
The connection state at this time is a state in which the groove portion 41b of the duct B is engaged in a state of being fitted around the engagement portion 72 of the base 7, and the tip of the bottom body 40 is in contact with the stopper portion 73. Therefore,
Holding the lid body 6 of the connecting tool Aa and the lid body 4 of the duct B, and holding the base 7 in the temporarily connected state and the bottom body 40 of the duct B together, lift them up to a predetermined position on the wall. Therefore, the screw 5 is inserted into the through hole 41c of the bottom body 4 of the duct B, further penetrates the mounting hole 22a of the base 2, and is screwed into the wall surface to temporarily connect the base and the bottom body of the duct. Fix 40 and to the wall.
Next, the engaging portion 40a of the bottom body 40 of the duct B is engaged with the engaging piece 4a of the lid body 4 to form the duct in a tubular shape. Therefore, the edge of the lid 6 is joined to the edge of the base 7 and joined, the screw 3 is inserted into the through hole 6a of this lid, and this screw is screwed into the screw hole 7a of the base 7 If the lid is screwed to this base, the state shown in FIG. 5 is obtained.

Further, a third embodiment will be described with reference to FIG. FIG. 6 shows only the base 8 of the connecting member Ab of this embodiment. The base is fitted with a lid (not shown) having substantially the same structure as that of the above-mentioned embodiment, and screw holes are formed. It is fixed by screwing a screw into 8a. And, a connecting portion 81 is formed at the opening edge portion of the base 8,
The structure of this connecting portion is composed of two engaging portions 82 that are formed in parallel, and this engaging portion includes a vertical wall portion 82a that is formed from the opening edge portion toward the depth direction and this vertical wall portion. And a top plate portion 82b extending from the upper surface at right angles in opposite directions. Further, a stopper portion 83 is formed at the rear end of each engaging portion 82. A mounting hole 84 is formed between the vertical wall portions 82a and 82a. The duct B connected by the base 8 shown in FIG.
It has the same configuration as that shown in FIG.

Therefore, in order to connect the duct B to the wall surface in this embodiment, the groove portions 41b of the fitting recesses 41 of the bottom body 40 of the duct are connected to the engaging portions 82 of the base 8 of the connecting tool Aa. It is fitted and engaged with 82 and is temporarily connected. Subsequent mounting steps are as in the previous embodiment.

In this embodiment, since the two engaging portions 82, 82 are formed, the connection strength between the base 8 and the duct B is increased, which is effective for temporary connection of the base or duct having a large diameter. is there. Further, in this embodiment, the portion where the mounting hole 84 is formed between the engaging portions 82 and 82 is formed thinner than the engaging portions 22 and 72 in both of the above-described embodiments, so that the material is correspondingly increased. It is possible to reduce the consumption of the synthetic resin.

As the diameter of the duct increases, the connecting portion of the base and the fitting recess of the duct also increase accordingly. It is necessary to change the design, such as separating multiple units.

Further, a plurality of ducts B are temporarily connected through a base of a plurality of connecting tools A, Aa, ab selected from a socket, an elbow, cheese, etc. in advance according to the design drawing, and the whole duct B is constructed. If the assembly of the duct is completed and this connecting tool is fixed to the wall by the work process described above,
The size of the entire duct can be easily adjusted.

[0017]

The present invention is embodied in the form described above, and has the following effects. Since the duct has already been temporarily connected to the connecting tool, work at high places can be done by climbing the ladder once, then installing the base with the duct connected at once, and installing the lid. In addition, the fitting recess of the duct connected by the connecting tool engages with the engaging part of the connecting part at the open end of the connecting tool, and the connected state is reliably maintained with the proper insertion dimension of the duct. It is possible, and the duct does not come off after construction, and the stability is high.

[Brief description of drawings]

FIG. 1 is a development view of a connector, and is a perspective view of a lid portion and a base.

FIG. 2 is a perspective view of a duct.

FIG. 3 is a perspective view showing a state in which ducts are connected via a connecting tool.

FIG. 4 is a development view showing another embodiment of the connector, and is a perspective view of a lid portion and a base.

FIG. 5 is a perspective view showing a state in which ducts in another embodiment are connected via a connecting tool.

FIG. 6 is a perspective view of a base according to still another embodiment.

[Explanation of symbols]

 A duct 1 lid 2 base 21 connecting part 22 engaging part 22a mounting hole 23 stopper part B duct 4 duct lid 4a duct engaging piece 40 duct bottom 40a bottom engaging part 41 fitting recess 41a Opening Aa Connecting tool 6 Lid 7 Base 71 Connecting part 72 Engaging part 72a Mounting hole 73 Stopper Ab connecting tool 8 Base 81 Connecting part 82 Engaging part

Claims (3)

[Claims] 1. A lid and a base that covers the lid and is connectable to the lid, and a connecting portion is formed at an opening edge portion of the base, and the connecting portion has a depth from the opening edge portion. The end portion of the duct is formed so that the end portion of the duct can be inserted and inserted, and the stopper portion formed at the rear end of the engagement portion, and the attachment portion has a mounting hole. Duct connector characterized by. 2. A duct connected by the duct connector according to claim 1, wherein the duct has a tubular shape, and at least one end of the duct is fitted with a recess having a cross section that is enlarged from the opening to the inside. A duct characterized in that a fitting recess is integrally formed, and the fitting recess is engageable with the engaging portion of the base. 3. The duct according to claim 2, wherein the duct is divided into a lid body and a bottom body, and the lid body and the bottom plate can be engaged by an engagement means.