JPS6112410Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tightening device for tightening and attaching a conductor passing through a panel of a high-frequency traffic signal or the like to the panel.

A conventional tensioning device will be explained with reference to FIG.

Reference numeral 1 denotes a panel, which is attached to a housing (not shown) that accommodates a high-frequency signal device (not shown). Reference numeral 2 denotes a connecting conductor, which is formed of a semi-rigid cable bent into a U shape, and is connected to a high frequency signal device housed in a housing, through which a current passes through the panel 1.

Reference numeral 3 denotes a through conductor, which is provided with a flange 6 projecting outward from a through shaft 5 that passes through a through hole 4 provided in the panel 1. The panel 1 is connected to the flange 6 by a nut 7 that is screwed onto the through shaft 5. Press in the direction of the through conductor 3
is fixed in panel 1. One side of the through conductor 3 is connected to a high frequency signal device housed in the housing, the other side is connected to the connecting conductor 2 to support the connecting conductor 2, and the through shaft 5 of the through conductor 3 receives current from the high frequency signal device. The current passes through the panel 1 to the connection conductor 2.

The other end of this connecting conductor 2 is a semi-rigid cable bent into a U shape and is connected to another through conductor 3, passing through the panel 1 and passing current to a high frequency signal inside the housing.

The conventional tensioning device is constructed as described above, and the connecting conductor 2 is attached to the panel 1 in which the through hole 4 is previously formed at a predetermined position, and is connected to a high frequency signal inside the housing.

However, when installing the connecting conductor 2, for example, the dimension between the axial centers of the two through conductors 3 provided at both ends of the connecting conductor 2 bent in a U shape is the hole of the two through holes 4 formed in the panel 1. When the distances between the centers did not match, a problem occurred in that the connecting conductor 2 could not be attached to the panel and the connection and assembly work with the high frequency signal inside the housing could not be performed.

In such a case, if you try to attach the connecting conductor 2 by force, the connecting conductor 2 will be damaged.
The through hole 4 of the panel 1 is reprocessed to enlarge the inner diameter, and the distance between the two through conductors 3 is matched to the connecting conductor 2 by using the expanded inner diameter of the through hole 4. Ta. Therefore, when connecting and assembling the high-frequency signal, additional work time is required to process both through holes 4 of the panel 1, which has the drawback of increasing the assembly work cost.

Also, the through shaft 5 inserted into the expanded through hole 4
When the rotational frictional force between panel 1 decreases and external rotational force is applied to connecting conductor 2, panel 1
This caused a problem in that the connecting conductor 2 could not be reliably fixed to the panel 1.

As mentioned above, in the conventional tensioning device, the through conductor 2
cannot be safely and reliably fixed to the panel 1, and the connection and assembly work costs are high.

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional technology, and it is possible to move the through conductor in the radial and axial directions by interposing a bushing between the panel and the through shaft. Therefore, by using a washer that makes it easy to adjust its position and also engages the panel and the through shaft to prevent rotation of the through shaft, the through conductor can be safely and reliably tightened to the panel, making assembly work easier. The purpose is to provide a tensioning device that is inexpensive to use.

An embodiment of this invention will be described below with reference to FIG.

2 is the same as the same reference numeral as in the conventional device.

Reference numeral 8 denotes a panel, which is attached to a housing housing a high-frequency signal device, and has a through hole 9 and a notch 10 used for rotation stop formed in a part thereof.

11 is a through conductor, which is connected to the through hole 9 of the panel 8.
from the through shaft 12 passing through the through hole 9 of the panel 8.
A flange 13 is provided which projects outwardly to a size larger than the inner diameter of the through shaft 12. A notch 14 used to prevent rotation is formed in a part of the through shaft 12, and an electric current flows through the inside of the through shaft 12 in the axial direction.

A bushing 15 has a flange on one end of its cylindrical portion, and is interposed between the inner surface of the through hole 9 of the panel 8 and the outer surface of the through shaft 12 of the through conductor 11. Penetration axis 1 of conductor 11
2 penetrates.

Reference numeral 16 denotes a washer, which has an engaging portion 17 that engages with the notch 9 of the panel 8 on a part thereof, and an engaging portion that engages with the notch 14 provided in the through shaft 12 of the through conductor 11 on the other part. A portion 18 is formed that engages the panel 8 and the through shaft 12 to prevent rotation of the through shaft 12 within the through hole 9 of the panel 8.

The outside diameter of the flange of this bushing 15 is larger than the inside diameter of the through hole 9, and the outside diameter of the cylindrical portion is smaller than the inside diameter of the through hole 9, and the length of the cylindrical portion is equal to the thickness (thickness) of the panel 8. It is formed longer than.

Numeral 19 is a nut which is screwed onto the through shaft 12 of the through conductor 11 and connects the panel 8 to the collar 1 of the through conductor 11.
3 to tighten the through conductor to the panel 8, and press in the direction of the collar 13 of the through conductor 11 to tighten the through conductor 11 to the panel 8,
A bushing 15 and a washer 16 are supported between the through conductor 11 and the collar 13.

This tensioning device is constructed as described above, in which the bushing 15 is inserted in advance into the through hole 9 of the panel 8, the through conductor 11 is connected to this through the through conductor through the bushing 15, and then the washer 16 is inserted into the through shaft 12 from the back side of the panel 8 and engaged with the notch 10 of the through hole 9 and the notch 14 of the through shaft 12 to prevent the through shaft 12 from rotating.
9 and tighten the through conductor 11 and the bushing 15.
and washer 16 are fixed to panel 8 and assembled.

When drilling holes in the panel 8, the inner diameter of the through hole 9 is larger than the outer diameter of the bushing 15, and a predetermined gap is maintained between the two. The inner diameter of the through hole 9 is defined so that the dimension of this gap is larger than the maximum error dimension that occurs in the dimension between the axis centers of both ends of the connecting conductor 2 bent into a U shape. ing.

In addition, in the thickness direction of the panel 8, that is, the through conductor 1
The cylindrical length of the bushing 15 is made longer than the thickness of the panel 8 so that a gap is created between the panel 8 surface in the axial direction of the bushing 1, the collar surface of the bushing 15, and the washer 16. Therefore, when attaching the connecting conductor 2 to the panel 8, the connecting conductor 2 may have slightly different dimensions between both ends.
However, the bushing 15 can move in the through hole 9 by an amount corresponding to the error dimension, and the distance between the two through conductors 11 can be matched with the connecting conductor 2. Dimensional error is panel 8
Even if there is an error in the plate thickness direction, the bushing 15 can move in the axial direction within the through hole 9, so even if there is a dimensional error in this direction, the connecting conductor 2
can be matched easily. This through hole 9
And the bushing 15 is connected to the through conductor 11 in this way.
Since the position of the connecting conductor 2 can be adjusted, the conventional problem of not attaching the connecting conductor 2 to the panel 1 is eliminated, and accidents such as damage caused by applying force to the connecting conductor 2 during attachment are prevented.

In addition, when the connection conductor 2 does not match the position of the through hole 4 of the panel 1, reprocessing work to expand the inner diameter of the through hole 4 of the panel 1, which was previously necessary, is no longer necessary, and the connection assembly work of the high frequency signal device is no longer necessary. Since the process can proceed without any obstacles, assembly work costs can be reduced.

Furthermore, even if the gap between the inner surface of the through hole 9 and the outer surface of the bushing 15 becomes large, the through shaft 12 is prevented from rotating to the panel 8 by the washer 16.
Even if an external force that rotates the connecting conductor 2 is applied, rotation of the through shaft 12 is prevented, and the connecting conductor 2 can be reliably fixed to the panel 8.

Although the description has been made using a high-frequency signal as the electrical equipment housed in the casing, the same effect can be obtained by using this tensioning device on a panel of a casing housing various electrical equipment.

In addition, the connection conductor is bent into a U shape and a semi-rigid cable is used, and this coaxial connector seat is used as a through conductor. Similar effects can be achieved by using the through conductor of various types of connection conductors.

As described above, this invention allows the through conductor to be moved in the radial and axial directions by interposing a bushing between the panel and the through shaft, making it easy to adjust its position and By using a washer that engages with the shaft and prevents rotation of the through shaft, the through conductor can be safely and securely fastened to the panel, thereby providing a tightening device that can reduce assembly work costs. be.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional tensioning device, and FIG. 2 is a block diagram showing an embodiment of this invention, and FIG. 2 is a block diagram and FIG. 2 is an exploded perspective view. In the figure, 8 is a panel, 9 is a through hole, 10 is a notch, 11 is a through conductor, 12 is a through shaft, 13 is a collar, 14 is a notch, 15 is a bushing, 16 is a washer, and 19 is a nut. be. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A panel that is attached to a housing that houses electrical equipment and has a through hole and a notch used for rotation stop formed in a part of the panel, from the through shaft that passes through the through hole of this panel to the inner diameter of the through hole. A flange that protrudes outwardly is provided, a notch used to prevent rotation is formed in a part of the through shaft, a through conductor through which a current passes through the inside of the through shaft in the axial direction, and a through conductor that extends from the inner diameter of the through hole It has a cylindrical part whose outer diameter is smaller than the inner diameter of the through hole and whose cylindrical length is longer than the thickness of the panel, and the cylindrical part is inserted into the through hole of the panel. is inserted,
A bushing through which the through conductor passes through the cylindrical portion, a part of which engages with the notch of the panel, and another part of which engages with the notch of the through shaft, so that the through shaft is inserted into the through hole of the panel. A tightening device comprising: a washer that prevents the bushing from rotating; and a nut that is screwed onto the through shaft of the through conductor and supports the bushing and the washer between the collar of the through conductor.