JP2012039833A - Fastening fitting for plug-in device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastener for a plug-in device in which holding members and/or fastening members do not slide in an inclination direction even when the plug-in device is somewhat inclined during installation of the device.SOLUTION: Stopping spots 13a to 13d are provided at the outward side in pairs of long holes 12a to 12d formed on both sides of fixation members 11 for a fastener 10. Accordingly, even when the plug-in device 30 is inclined, holding members 51a to 51d and fastening members 55a to 55d can be maintained at outward positions. Thus, even when the plug-in device is inclined to some extent for the purpose of positional adjustment or the like during installation of the plug-in device 30, the holding members and/or fastening members do not move only in one direction, enabling significantly easy installation and fixation of the device.

Description

  The present invention relates to a plug-in device used when a power source is branched from a bus duct, and more particularly to a fixing bracket of the plug-in device for fixing the plug-in device to the bus duct.

  In a structure such as a high-rise building, a bus duct that can easily branch a load is used as an electric trunk line. Unlike normal cables, bus ducts have great load resistance and rigidity. The bus duct is one that houses and holds a plurality of conductors configured by covering the periphery of an electrical conductor with an insulating material inside the housing. Compared to a wiring system that bundles and wires multiple ordinary cables, this bus duct has a very low impedance and functions that prevent leakage magnetic flux, etc., so it can be used as a main power supply line for factory facilities and buildings. Widely used.

  The bus duct plug-in device is a branching device for connecting to the bus duct and branching the wiring. A plug-in hole for connecting a plug-in device is provided at a predetermined position on one surface of the bus duct housing. By inserting a plug-in instrument insertion bus bar into the plug-in hole, the power supply is branched from the bus duct to the plug-in instrument side (see, for example, Patent Document 1).

  4-6 is a figure for demonstrating the condition where the plug-in instrument 30 is connected to the bus duct 40, and is fixed with the fixing metal fitting of the conventional plug-in tool (it is only called a "fixing metal fitting" hereafter). FIG. 4A is a diagram showing the relationship between the plug-in device 30 and the bus duct 40, and FIG. 4B fixes the plug-in device 30 to the plug-in device mounting portion 42 of the bus duct 40 by the fixing bracket 50. FIG. 4C is a partial cross-sectional view showing a fixed state, and FIG. 4C is a partial enlarged perspective view seen from the direction of arrow A in FIG. FIG. 5A is a perspective view showing a connection relationship when the bus duct is laid vertically, and FIG. 5B is a diagram showing a state when the plug-in device is connected and fixed to the bus duct 40, It is the top view seen from the arrow B direction of Fig.5 (a). FIG.5 (c) is a perspective view which shows the state by which the conventional fixing metal fitting 50 was fixed to the plug-in instrument. 5 (c) shows a state in which the holding member 51 of the fixing bracket 50 hangs downward. At the time of attachment, the holding member 51 rotates inwardly as shown by a broken line 51 in FIG. And tightened.

The bus duct 40 contains a conductor for supplying power, and as described above, has a plug-in hole 41 on one side (see FIGS. 5A and 6A). On the side of the bus duct 40 on which the plug-in hole 41 is provided, a plate-like plug-in device mounting portion 42 having a bent portion 43 whose both ends are bent short is provided.
The plug-in device 30 includes an insertion bus bar 31, and the power supply from the bus duct 40 is branched by inserting the insertion bus bar 31 into the plug-in hole 41. The plug-in device 30 connected to the bus duct 40 is firmly fixed to the plug-in device mounting portion 42 of the bus duct 40 by the fixing metal fitting 50 (see FIGS. 4B and 5B).

  The fixture 50 includes a clamping part 51, a fastening member 55, and a fixing member 60. The fixing member 60 is a plate-like member and is provided with slit-like long holes 61 at positions on both ends in the width direction of the plug-in device 30. The long hole 61 is configured so that the holding member 51 and the fastening member 55 can be slid in order to adjust the positions of the holding member 51 and the fastening member 55 in accordance with the size of the width of the plug-in instrument mounting portion 42 of the bus duct 40. Is provided. As the tightening member 55, for example, a bolt and a nut can be used. As shown in FIGS. 1 to 3, the plate-like fixing member 60 is integrated with the frame of the plug-in device 30 even if it is fixed to the plug-in device 30 with screws 62 or the like (see FIG. 6B). It is good also as a structure (not shown) formed.

  When the plug-in device 30 is fixed using the fixing bracket 50, the holding member 51 of the fixing bracket 50 is rotated to a position indicated by a broken line in FIG. 5C, and one end portion 52 of the holding member 51 is attached. After the inner side of the bent part 43 of the part 42 is brought into contact, the clamping member 51 is fastened by the fastening member 55, and the plug-in device mounting part 42 is fastened in a state of being sandwiched between the clamping member 51 and the fixing member 60. To do.

JP 2005-229656 A

The long holes 61 of the fixing member 60 of the conventional plug-in device 50 are provided in a straight line perpendicular to the longitudinal direction of the bus duct 40 (parallel to the width direction and in the horizontal direction) (FIGS. 4A and 4C). For this reason, there are the following problems.
Normally, the bus duct 40 is laid in the vertical direction as shown in FIG. 5A, and the plug-in device 30 is also connected so as to cover the bus duct 40. Therefore, when the plug-in device 30 is attached to the bus duct 40, it is necessary to fix the plug-in device 30 in the same manner as the bus duct 40 as shown in FIGS. 5A and 5B.

  If the plug-in device 30 can always be maintained in the vertical state during the mounting and fixing operation of the plug-in device 30, as shown in FIG. 6A, the holding members 51a to 51b of the fixing bracket are maintained at predetermined positions. There is no problem. However, in order to attach and fix the plug-in device 30 to the bus duct 40, delicate positioning such as alignment of the plug-in hole and the insertion bus bar may be required. When the plug-in device 30 is temporarily inclined slightly during the alignment of the bragg-in device 30, the long hole 61 of the conventional fixing member 60 is inclined obliquely from the horizontal direction. At this stage, the fastening members 55a to 55d of the fixing bracket 50 are not fastened and can be freely slidably moved in the long hole 61. Therefore, when one of the long holes 61 tilts downward, FIG. As shown in b), the fastening members 55a to 55d and the clamping members 51a to 51d provided on both sides of the plug-in device 30 are all below the long hole 61 (the left end of the long hole 61 in FIG. 6B). It will slide to.

  In this way, if the clamping members 55 and the clamping members 51 on both sides move to one side, the initially set interval between the clamping members 51a and 51b and the interval between the 51c and 51d are the plug-in instrument mounting portion of the bus duct. It becomes narrower than the width of 42, and it becomes difficult to fix the plug-in device 30 to the plug-in device mounting portion 42. Such movement of the clamping members 51a to 51d is due to unnecessary labor and time for the mounting work. In order to avoid such a situation, it is conceivable that the clamping members 51a to 55d and the like are biased by a spring or the like so that they do not move to one of the long holes 61 even when the plug-in device is inclined obliquely. There is a problem that the structure becomes complicated.

  Therefore, in order to solve the above-described problems, the present invention can maintain the interval between the tightening members 55 in a predetermined state even when the plug-in device is inclined slightly at the time of mounting the plug-in device. It is an object of the present invention to provide a fixture for a plug-in instrument having a simple structure capable of facilitating the mounting and fixing operation of the instrument.

The fixture for the plug-in appliance of the present invention is a fixture that attaches and fixes the plug-in appliance to the plug-in appliance attachment portion of the bus duct,
A fixing member which is formed so as to be attachable and fixable to the plug-in device or formed integrally with the plug-in device, and has a plurality of slit-like long holes at positions where the plug-in device is fixed;
A clamping member provided corresponding to each elongated hole of the fixing member, and sandwiching the plug-in instrument mounting portion of the bus duct between the fixing members;
A clamping member that is provided so as to penetrate the elongated hole and the clamping member, and clamps and fixes the fixing member to the plug-in instrument mounting portion by clamping the clamping member;
With
The long hole of the fixing member includes a stop spot portion that can hold the clamping member and the clamping member at a position closer to the outside in the width direction of the bus bar even when the plug-in device is inclined obliquely. It is characterized by that.

  According to the present invention, by providing the stop spot portion in the elongated hole, the tightening member and the clamping member do not slide downward even when the plug-in device is inclined, so that both are not biased to one side, It becomes possible to continue the work as it is. Therefore, it is possible to efficiently advance the position adjustment and attachment / fixing work of the plug-in device.

It is the figure which looked at the state which attached the fixing plate of the fixing tool which concerns on one Embodiment of this invention to the plug-in instrument from the upper direction of the plug-in instrument. FIG. 5 is a view showing a state in which a press fitting is further attached and the plug-in device is inclined obliquely. (A) And (b) is a figure which shows a part of the state which attached the fixing plate concerning the other Example of this invention to the plug-in instrument further, (c) is when attaching a plug-in instrument horizontally. It is a figure which shows the fixing tool concerning the other Example of this invention useful. It is the perspective view and partial enlarged view for demonstrating the method of connecting and fixing a plug-in instrument to a bus duct, and a fixing tool. (A) is a perspective view which shows the state by which the plug-in instrument was fixed to the bus duct, (b) is the enlarged plan view, (c) is an enlarged perspective view which shows the part of a fixing | fixed part. It is a figure which shows typically the problem of the fixing device of the conventional plug-in device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the figure, the same parts as those in the prior art described above are denoted by the same reference numerals. Moreover, in this invention, it is possible to use all the parts other than the fixing member of the fixing metal as in the prior art.
For example, the plug-in device 30, the bus duct 40, the plug-in device mounting portion 42 of the bus duct, the clamping member 51, the tightening member 55, and the like can be the same as those in the prior art.
FIG. 1 is a plan view showing a state in which a fixing member 11 of a fixing metal fitting according to the present invention is attached to a plug-in device, and FIG. 2 shows a clamping member 51 tightening member 55 as a fixing metal fitting 10 according to the present invention. It is a top view which shows the state in which the plug-in instrument 30 inclines slightly diagonally in the state which attached.

  The long holes 12a to 12d of the fixing member 11 shown in FIG. 1 are at positions where the end portions near the center are higher than the outer end portions. Therefore, in a state where the plug-in device is placed vertically, the tightening member 55 and the clamping member 51 move to positions 13a to 13d that are positions of the outer ends of the long holes 12a to 12d. That is, 13a to 13d become the stop spots of the long holes described in FIG. By providing such stop spots 12c and 12d, even if the plug-in device 30 is slightly tilted, as long as the plug-in device 30 is not tilted to an inclination angle θ or more of the long holes 12a to 12d, the left and right tightening members 55 and the clamping members 51 Is not slid along the grooves of the long holes 12a to 12, but is maintained in a state where a predetermined interval is maintained. Therefore, even if the plug-in device 30 is tilted, as shown in FIG. 2, the fastening members 55a to 55d and the clamping members 51a to 55d on both sides are maintained at a predetermined interval.

  In this way, by changing the inclination of the left and right long holes 12a and 12a and 12b and 12d of the fixing member 11 so as to be higher in the center, or by providing a recess in a part of the groove of the long hole, the long holes By providing stop spots at 12a to 12d, even when the plug-in device is tilted, the fastening members 55 and the clamping members 51 on both sides are not slid toward one side and are maintained at a predetermined interval. be able to. Thus, the insertion bus bar can be inserted into the plug-in hole while adjusting the plug-in device by slightly changing the angle of the plug-in device without worrying about the sliding movement of the tightening member 55 or the clamping member 51 when attaching the plug-in device 30. Since it is possible to adjust the positioning of the plug-in device, it is very easy to attach and fix the plug-in device. In addition, since a special urging mechanism such as a spring is not used, an inexpensive fixing bracket can be provided.

  In addition, the inclination angle θ with respect to the horizontal direction of the long holes 12a and 12b is preferably 5 degrees or more and 20 degrees or less, more preferably 5 degrees or more and 10 degrees or less. Assuming that the plug-in device 30 is tilted back and forth by 5 degrees as the angle adjustment, and if the inclination angle of the long hole is 20 degrees or more, in order to secure a necessary sliding distance in the width direction, the dimension c of the fixing plate This is because it is necessary to increase the size (see FIG. 1).

  FIGS. 3A, 3B, and 3C illustrate fixing members 11b to 11d according to other embodiments of the present invention. Each of the fixing members 11b to 11d has long holes 14, 16, and 18 having different shapes, and each of the long holes has stop spots 15, 17, and 18. The long holes 14a and 14b of the fixing plate shown in FIG. 3 (a) are provided with stop spots 15a and 15b for temporarily fastening the movement of the tightening members at the outer ends of the fixing plates, respectively, rather than the embodiment shown in FIG. Further, it is possible to prevent the deviation, and the angle θ can be set to 5 degrees or less. In FIG. 3B, stop spots 17a and 17b are provided at the outer ends of the long holes 16a and 16b, and the angle of the long holes is provided horizontally. In this way, even if the long holes 16a and 16b are provided horizontally or the stop spots 17a and 17b at the outer ends are provided, it is possible to prevent the fixture from moving in one direction even if the plug-in device is tilted. It is.

FIG.3 (c) is a figure which shows the example of a fixing tool in the case of arrange | positioning and fixing a bus duct and a plug-in instrument in a horizontal direction. In this case, since the position of the fixture of the plug-in device is adjusted in the vertical direction, 19a to 19d in the figure, where the tightening member does not move up and down the long holes 18a to 18d, become stop spots. In this case, the range of the angle θ described above is not applied.
In the embodiment of FIG. 3C, the stop spots of the long holes 18a and 18c are 19a and 19c, respectively, and the stop spots of the long holes 18b and 18d are 19b and 19d, which are different.

As is clear from the above description, even in the fixing bracket shown in each embodiment of FIG. 3, by providing a stop spot in the elongated hole, even when the plug-in device 30 is tilted, The holding member 51 is not slid toward one side and can be maintained in a state with a predetermined interval.
Thus, the insertion bus bar is inserted into the plug-in hole while adjusting the plug-in device by slightly changing the angle of the plug-in device without worrying about the sliding movement of the tightening member 55 or the clamping member 51 when the plug-in device 30 is attached. Since it is possible to adjust the positioning of the plug-in device, it is very easy to attach and fix the plug-in device. In addition, since a special urging mechanism such as a spring is not used, an inexpensive fixing bracket can be provided.

  In addition, when the plug-in device is attached to the bus duct, the present invention is a state in which the position of the mounting portion is separated from the width of the mounting portion of the bus duct even if the plug-in device is adjusted by changing the angle slightly. However, the present invention is not limited to the above embodiment, and various modifications can be adopted.

DESCRIPTION OF SYMBOLS 10 Fixing bracket 11 of plug-in apparatus concerning this invention Fixing member 12,14,16,18 long hole 13,15,17,19 Stop spot 30 Plug-in apparatus 31 Insert bus bar 40 Bus duct 42 Plug-in hole 42 Plug In-tool mounting part 43 Bending part 50 Conventional fixing bracket 51 Holding member 55 Tightening member 60 Conventional fixing member 61 Conventional long hole θ Inclination angle of long hole

Claims (4)

A fixing bracket for mounting and fixing a plug-in device to a plug-in device mounting portion of a bus duct,
A fixing member which is formed so as to be attachable and fixable to the plug-in device or formed integrally with the plug-in device, and has a plurality of slit-like long holes at positions where the plug-in device is fixed;
A clamping member that is provided corresponding to each elongated hole of the fixing member, and for sandwiching the mounting portion of the bus duct between the fixing members;
A clamping member that is provided so as to penetrate the elongated hole and the clamping member, and clamps and fixes the fixing member to the plug-in instrument mounting portion by clamping the clamping member;
With
The long hole of the fixing member includes a stop spot portion that can hold the clamping member and the clamping member at a position closer to the outside in the width direction of the bus bar even when the plug-in device is inclined obliquely. A fixture for a plug-in device. The elongated hole of the fixture of the plug-in device used when the plug-in device is attached in a vertical direction,
The two long holes provided on the right and left sides are inclined so that the inner side is higher and the outer side is lower, and the position closer to the outer side of each of the long holes is used as the stop spot. A fixing bracket for the plug-in device according to 1. The elongated hole of the fixture of the plug-in device used when the plug-in device is attached in a vertical direction,
The fixing bracket for a plug-in device according to claim 1, wherein a recess for accommodating the shaft of the tightening member is formed near the outside of the two long holes respectively provided on the left and right to form a stop spot. The elongated hole of the fixture of the plug-in device used when the plug-in device is attached in a horizontal direction,
2. The fixing bracket for a plug-in device according to claim 1, wherein a recess for accommodating the shaft of the tightening member is formed near the outside of the two long holes provided above and below to form a stop spot.

Images