JPH0614438A - Connection joint of duct - Google Patents

Abstract

PURPOSE:To enable the connection by providing an appropriately horizontal rib positioning the lower ends of a pair of conductors to the lower end of a holding metal fixture. CONSTITUTION:A rib 7 of a holding metal fixture 9 having an L-shaped metal fixture 6 is contacted with the upper end of conductors 2, and an L-shaped metal fixture 6 is moved in the direction of the arrow to diffuse between the L-shaped metal fixture 6 and holding metal fixture 9. Connection joints 3 are so loaded that a pair of conductors 2 are entered from a gap formed between the L-shaped metal fixture 6 and the holding metal fixture 9. Under such a state, a pressure spring 12 is pressured by screwing a screw 13 to push the holding metal fixture 9 against the L-shaped metal fixture 6, and the conductors 2 are connected. According to the constitution, the L-shaped metal fixture 6 is held by one hand and can be loaded to the conductors 2, and work in a narrow or high place can easily carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct connecting joint.

[0002]

2. Description of the Related Art As an example of a conventional duct connection joint, as shown in FIG. 5, an L-shaped metal fitting 50 having a substantially horizontal rib 51 at its upper end, a pressing metal fitting 52, and an outer peripheral surface of the pressing metal fitting 52 are provided. The pressure spring 53 to be arranged, the L-shaped metal fitting 50, the pressing metal fitting 52, and the screw 54 penetrating and attached to the pressure spring 53.
There was one with. This connection joint is connected as shown in FIGS. That is, by sandwiching the end portions of the pair of conductors 55, 55 between the L-shaped metal fitting 50 and the holding metal fitting 52, and tightening the screw 54, the pressure spring 53 is pressed to make the holding metal fitting 52 into the L-shaped metal fitting 50. I was pressing.

However, as shown in FIG. 9, there is a possibility that the connection joint may be displaced with respect to the conductor 55. Therefore,
As shown in FIG. 10, there is a L-shaped metal fitting 50 'provided with a substantially horizontal rib 56 at the lower end thereof. In this case, since the conductor 55 is positioned by the ribs 51 and 56 as shown in FIGS. 11 and 12, reliable connection is possible.

[0004]

However, this connecting joint has the following problems. That is, at the time of connection, as shown in FIGS. 13 (a) and 13 (b), it was necessary to hold the L-shaped metal fitting 50 'and the holding metal fitting 52 with both hands and expand them. For this reason, it has been inconvenient to work in narrow spaces or high places.

Therefore, an object of the present invention is to provide a duct connection joint which can be easily connected.

[0006]

The duct connection joint of the present invention is a connection joint for connecting the conductors of a duct, and is an L-shape provided with a substantially horizontal rib for positioning the upper ends of the pair of conductors. A metal fitting, a holding metal fitting that sandwiches the ends of the pair of conductors with the L-shaped metal fitting, a pressure spring arranged outside the holding metal fitting, the L-shaped metal fitting, the holding metal fitting, and the pressure spring. In a connection joint of a duct, which is mounted penetratingly and presses the pressure spring to press the pressing fitting against the L-shaped fitting, the lower ends of the pair of conductors are positioned at the lower ends of the pressing fitting. It is characterized in that a substantially horizontal rib is provided.

[0007]

According to the structure of the present invention, since the rib is provided at the lower end of the holding metal fitting, the rib is brought into contact with the conductor while the L-shaped metal fitting is held by one hand, so that the L-shaped metal fitting and the holding metal fitting are connected. The space can be expanded. Therefore, the L-shaped metal fitting can be attached to the conductor while being held by one hand.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A duct connection joint according to an embodiment of the present invention will be described with reference to FIGS. 1 is a bus duct,
A plurality of conductors 2 are arranged inside. Multiple conductors 2 ...
Are connected by connection joints 3 ... This connection joint 3
As shown in FIG. 2, an L-shaped metal fitting 6 having a substantially horizontal rib 4 provided at the upper end and a screw hole 5 provided at the center, and a substantially horizontal rib 7 provided at the lower end having a hole 8 provided at the center. The pressing metal fitting 9 is provided, a pressure spring 12 arranged outside the pressing metal fitting 9 and provided with a hole 11 in the center, and a screw 13 inserted into the holes 8 and 11 and screwed into the screw hole 5. . The pressure spring 1
2 and both ends of the press fitting 9 are engaged with each other by engaging portions 14
And the engaged portion 15 are provided respectively. Also, FIG.
As shown in (c), the holding metal member 9 is positioned by the rib 4 and is arranged so as to face the vertical piece of the L-shaped metal member 6,
The conductor 2 can be sandwiched with the L-shaped metal fitting 6. In this case, the dimensions of the L-shaped metal fitting 6 and the holding metal fitting 9 are set so that the conductor 2 is positioned by the ribs 4 and 7, and the rib 7 is located below the lower end of the L-shaped metal fitting 6.

Next, a procedure for connecting the pair of conductors 2 and 2 using the connection joint 3 will be described. First, as shown in FIG. 4A, hold the L-shaped metal fitting 6 and press the metal fitting 9
The rib 7 is applied to the upper end of the conductor 2, and the L-shaped metal fitting 6 is moved in the direction of the arrow to widen the space between the L-shaped metal fitting 6 and the holding metal fitting 9.
Then, as shown in FIG. 4B, the connection joint 3 is attached so that the pair of conductors 2 and 2 enters through the gap formed between the L-shaped metal fitting 6 and the holding metal fitting 9. That is, as shown in FIG. 3, the pair of conductors 2 and 2 are arranged between both sides of the screw 13, and the upper and lower ends thereof are positioned by the ribs 4 and 7 so that the L-shaped metal fitting 6 and the holding metal fitting 9 are interposed between them. Intervene in. In this state, the screw 13 is tightened to pressurize the pressure spring 12 to press the holding metal fitting 9 against the L-shaped metal fitting 6 to connect the conductor 2 (FIG. 4 (c)).

In this embodiment, since the rib 7 is provided at the lower end of the pressing metal fitting 9, the rib 7 can be brought into contact with the conductor 2 to expand the space between the L-shaped metal fitting 6 and the pressing metal fitting 9. Therefore, the L-shaped metal fitting 6 can be attached to the conductor 2 by holding it with one hand. Further, since the position of the rib 7 is located below the lower end of the L-shaped metal fitting 6, the rib 7 can be easily brought into contact with the conductor 2.

In addition, a rib is provided on the upper end of the holding metal fitting 9,
The upper end of the conductor 2 may be positioned by this rib.

[0012]

According to the duct connection joint of the present invention,
By providing a rib at the lower end of the holding metal fitting, the L-shaped metal fitting is held with one hand, and this rib is brought into contact with the conductor so
The space between the shape fitting and the holding fitting can be expanded. Therefore, the L-shaped metal fitting can be held by one hand and attached to the conductor, and the work in a narrow space or a high space is easy.

[Brief description of drawings]

FIG. 1 is a perspective view of a connection joint for a duct according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a connection joint.

FIG. 3 is a front view of the connection state.

FIG. 4 is an explanatory diagram showing a connection procedure.

FIG. 5 is an exploded perspective view of a conventional example.

FIG. 6 is a front view of the connection state.

7 is a cross-sectional plan view of FIG.

8 is a partial cross-sectional side view of FIG.

FIG. 9 is an explanatory diagram showing the problem.

FIG. 10 is an exploded perspective view of another conventional example.

FIG. 11 is a front view of the connection state.

12 is a partial cross-sectional side view of FIG.

FIG. 13 is an explanatory diagram showing the connection procedure.

[Explanation of symbols]

 1 Duct 2 Conductor 3 Connection Joint 4 Rib 6 L-shaped metal fitting 7 Rib 9 Holding metal fitting 12 Pressure spring 13 Screw

Claims (1)

[Claims] 1. A connecting joint for connecting conductors of a duct, wherein an L-shaped metal fitting having substantially horizontal ribs for positioning upper ends of the pair of conductors is provided at the upper ends, and end portions of the pair of the conductors are provided as the L-shaped fittings. The pressing metal fitting sandwiched by the metal fitting, the pressure spring arranged outside the pressing metal fitting, the L-shaped metal fitting, the pressing metal fitting, and the pressure spring which are attached to penetrate the pressure spring. In a connection joint for a duct including a screw for pressing the holding metal fitting against the L-shaped metal fitting, a substantially horizontal rib for positioning the lower ends of the pair of conductors is provided at a lower end of the holding metal fitting. Connection fittings.