JPH0760950B2 - Equipment mounting structure and method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a device such as a capacitor arranged inside a switchboard and a mounting method therefor.

[0002]

2. Description of the Related Art A wide variety of electric devices such as capacitors and electromagnetic contactors are attached to a predetermined position such as a bottom surface or a wall surface of a switchboard according to its use. As the mounting form, various types can be selected and adopted depending on the type of the switchboard or the electric equipment, and the mounting position or posture thereof. For example, Japanese Utility Model Laid-Open No. 62-160421 discloses a so-called D
There is disclosed a configuration of an electric device that can be mounted by any of a mounting method via an IN rail, a so-called mounting screw method, and a so-called JIS agreement type module leg mounting method.

[0003]

As described above, those applicable to various mounting methods are known, but among these mounting methods, the DIN rail method and the JIS agreement type method are standard and their mechanism and The relevant dimensions are defined and, of course, are applied within that constraint. On the other hand, the method of using the mounting screw is sufficient if the screw specifications of the mounting screw and the threaded portion of the mounted part match.
The degree of freedom when applied in this respect is wider than the former two. However, in the conventional mounting structure for electrical equipment,
In the case of a mounting method that uses mounting screws, the pitch of the mounting screws is fixed due to the restriction of having various types of mounting mechanisms. There was a problem that the features were not fully utilized. The present invention has been made in order to solve the above problems, and has a mounting structure in which the pitch of the mounting screws can be freely adjusted with a simple structure, and moreover, the device can be securely mounted and fixed. And to obtain a mounting method.

[0004]

The device mounting structure according to the present invention forms a groove-like groove on the device mounting surface, and the movable body is slidably fitted in the groove. A mounting hole into which a mounting screw is inserted is provided at one end of the movable body, and this portion is configured so as to project from the edge of the mounting surface. Further, convex portions are formed on both sides of the groove at the edge of the mounting surface. In this case, the pitch of the mounting screw can be adjusted by slidingly moving the movable body in the groove. Also, when the mounting screw is inserted into the mounting hole and the movable body is fastened to the mounted part, the convex part serves as a fulcrum and the movable body presses the inner surface of the groove part in the direction perpendicular to the mounting surface, and inside the groove part of the movable body. The frictional force of sliding in the device increases and the displacement between the movable body and the device body is prevented.

According to a second aspect of the present invention, there is provided a first movable body and a second movable body which can project from opposite edges of the mounting surface,
Due to the presence of the convex portion, the gap formed between the surface of the movable body and the attached portion is larger in the second movable body than in the first movable body. In this case, after tightening the first movable body with the mounting screw, move the device in the direction of the groove to adjust its position if necessary, and tighten the second movable body with the mounting screw to secure the device. Attach and fix.

According to a third aspect of the present invention, a rail groove is formed orthogonally to the groove portion, and a rail for mounting the device is locked by a locking portion provided at the other end of the second movable body. Is.

According to a fourth aspect of the present invention, there is provided a method for mounting a first movable body, wherein a mounting screw is inserted into a mounting hole of the first movable body, and the mounting screw is screwed into a predetermined position of a mounted portion to fasten and fix the first movable body. Of the movable body, a mounting pitch adjusting step of adjusting the pitch of the mounting screw by moving the device in a direction by a predetermined distance with respect to the fixed first movable body, and a mounting hole of the second movable body. A second movable body mounting step of inserting a mounting screw, screwing the mounting screw into a predetermined position of the mounted portion, and tightening and fixing the second movable body.

[0008]

1 is a perspective view showing a mounting structure of a capacitor according to an embodiment of the present invention, as viewed from the back and bottom of the capacitor. FIG. 2 is a perspective view of the entire capacitor as seen from the front side, and FIGS. 1 (1) and 2 (2) are respectively with a terminal block and a lead wire, which will be described later. In the figure, reference numeral 1 denotes a capacitor main body, in which a capacitor element is housed in a container made of a synthetic resin molded product, and a casting resin is injected into the container and cured to complete the unit. In FIG. 1, the back surface of the capacitor body 1 is shown as an upper surface and the bottom surface is shown as a side surface on the front side, and both surfaces can be mounting surfaces, but here, the back surface is mainly the mounting surface 2. Further, in FIG. 1, a terminal portion attached to the upper portion of the capacitor body 1 is omitted.

First, the center of the mounting surface 2 (the capacitor body 1
2 has a dovetail-shaped groove portion 3A, 3B extending in the vertical direction (the center in the width direction when viewed in the normal posture shown in FIG. 2) (vertical direction when viewed in the posture also shown in FIG. 2). Has been done. A groove 3C having a similar shape is formed on the upper portion of the capacitor body 1 adjacent to the groove 3A. This is used when the lead wire shown in FIG. 2 (2) is provided and will be described later. . Reference numeral 4 denotes a first movable body slidably fitted in the groove portion 3A (or the groove portion 3C), like the capacitor body 1.
It is a molded product of synthetic resin, and a mounting hole 5 into which a mounting screw is inserted is provided at the tip on the side projecting upward from the mounting surface 2. Further, the other end of the first movable body 4 is provided with a locking portion 6 that comes into contact with the lower end of the groove portion 3A. 7 is groove 3B
A second movable body that is slidably fitted to the housing, is made of a synthetic resin molded product, and is provided with a mounting hole 8 into which a mounting screw is inserted, at the tip of the side projecting downward from the mounting surface 2. . Second
The other end of the movable body 7 is provided with a locking portion 9 that comes into contact with the upper end of the groove 3B.
It has a function of locking the DIN rail when the IN rail is attached. Reference numeral 10 denotes a rail groove formed on the mounting surface 2 at right angles to the groove portion 3. When the DIN rail is fitted into the rail groove 10, the arm 9a constituting the locking portion 9 of the second movable body 7 is formed. The side edge of the DIN rail is locked by the melon 9b which also constitutes the locking portion 9 by utilizing the elasticity of the. Reference numerals 11A and 11B denote convex portions formed at the four corners of the mounting surface 2. The role of the convex portions 11 will be described later. However, since the convex portions 11 project from other portions of the mounting surface 2, when mounting is performed. First, the convex portion 11 comes into contact with the attached portion.

A groove 12A is formed on the bottom surface of the capacitor body 1.
And 12B, the rail groove 13, and the convex portion 14 are formed, but since they are the same as the groove portion 3A and the like formed on the back surface of the capacitor body 1, the description thereof will be omitted. Also, the groove 1
The movable body fitted to 2A and 12B is also omitted in the figure. The groove 15A formed by opening to the bottom side on both sides of the groove 3B is used in the case of so-called JIS agreement type mounting, and one of the mounting melons of this type fits in the groove 15A. It is configured to be embedded. The other of the mounting gourd fits into a groove 15B formed separately in the terminal block mounted on the upper portion of the capacitor body 1.

Next, a description will be given of the procedure in the case where the back surface of the capacitor body 1 is used as the mounting surface and is brought into contact with the mounted portion by using the mounting screws. FIG. 3 is a side view showing this state. In the figure, 16 is a terminal block mounted on the upper part of the capacitor body 1, and constitutes an insulator that is fitted with terminal plates for three phases led out from above the capacitor body 1 to insulate the terminal plates from each other. To do. In addition, this terminal block 16
Grooves are also formed on the back surface of the groove 3A shown in FIG.
The structure is connected to. First, as shown by the alternate long and short dash line in FIG. 1, the first movable body 4 and the second movable body 7 are
They are fitted into the groove portions 3A and 3B, respectively, and are projected upward and downward until the locking portions 6 and 9 come into contact with the ends of the groove portions 3A and 3B, respectively.
That is, the pitch between the mounting holes 5 and 8 is set to the maximum value P1. In this state, the mounting surface 2 of the capacitor body 1 is brought into contact with the mounted portion L, and the capacitor body 1 is aligned so that the mounting hole 5 of the first movable body 4 is at the predetermined position of the mounted portion L. . Next, attach the mounting screw 17 to the mounting hole 5
3 and the mounting screw 17 is screwed into the mounted portion L from the left side in FIG. 3 with a screwdriver (not shown), and the first movable body 4 is fastened and fixed. In this case, as shown in FIG. 1, since the convex portion 11A is formed on the mounting surface 2, the convex portion 11A is formed between the surface of the first movable body 4 and the mounted portion L immediately before tightening. There is a gap corresponding to the height of. Therefore, tightening this to make the above-mentioned gap zero means that the first movable body 4 presses the inner surface of the groove portion 3A by overcoming the elasticity of the capacitor body 1, and the first movable body 4 is pressed by the groove portion 3A. The frictional force when sliding in the inside in the axial direction increases accordingly. In other words, by tightening and fixing the first movable body 4 to the attached portion L, the sliding is suppressed, and as a result, the capacitor body 1 and the attached portion L are attached.
That is, the displacement of the positions is prevented. When the mounting pitch to the mounted portion L is P1, the mounting screw 17 is inserted into the mounting hole 8 of the second movable body 7 as it is, and the driver is also operated from the left side to operate the second movable body. 7 is fastened and fixed to the attached portion L. As shown in FIG. 1, since the convex portion 11B is also formed on the side of the groove portion 3B, sliding of the second movable body 7 is suppressed by this tightening, and the capacitor body 1
Is firmly and surely attached and fixed to the attached portion L.

Next, a description will be given of a procedure for mounting at a pitch P2 shorter than P1. In this case, the first movable body 4
After tightening and fixing to the mounting portion L, the capacitor body 1 is moved upward until the mounting holes 8 of the second movable body 7 match the position of the predetermined mounting pitch P2, and at that position the second movable body is moved. 7 is fastened and fixed to the attached portion L. Therefore, in this case, when the mounting surface 2 is brought into contact with the mounted portion L so that the above-described movement operation of the capacitor body 1 can be carried out smoothly, the convex portion 11A causes a gap between the first movable body 4 and the mounted portion L. The gap generated in the second movable body 7 is also generated by the convex portion 11B.
It is desirable to set it so as to be smaller than the gap generated between the mounting portion L and the attached portion L. That is, even when the first movable body 4 is tightened, the sliding friction in the groove portion 3A increases, but this is set to an extent necessary for smooth adjustment of the mounting pitch, and the second movable body By tightening the body 7, the capacitor body 1 is securely fixed. In addition, as a method of providing a difference in the above-mentioned gap, for example,
A difference in height may be provided between the convex portions 11A and 11B, or a difference in thickness between the first movable body 4 and the second movable body 7 may be provided. .

As described above, in this embodiment, it is possible to mount a screw by a so-called free pitch, which allows the mounting pitch to be freely set within a predetermined range. Also, the first
Since the movable body 4 is always inserted and tightened at the position where it is most protruded from the mounting surface 2, as shown in FIG. 3, it is located behind the terminal block 16 at the position of the mounting hole 5 after the pitch adjustment. Even if it becomes impossible for the driver to operate it, it will be possible to carry out the installation work without any problems.

In the above description, the terminal portion is shown in FIG.
This is the case where the terminal block 16 shown in (1) is applied, but the case where the lead wire 18 shown in FIG. 2 (2) is applied (in this case, an electric wire of a predetermined length is already connected to the capacitor).
Shifts the first movable body 4 from the center in the width direction by fitting the first movable body 4 into the groove portion 3C so that the electric wire does not hinder the screwing operation of the mounting screw 17 by the driver. There is.

FIG. 4 exemplifies another mounting method to which this capacitor can be applied. In FIG. 4 (1), the bottom surface of the capacitor body 1 is used as a mounting surface and the mounting portion L is mounted using mounting screws. It is a method. In this case, the movable body 19 and the movable body 20 (not shown in FIG. 1) are fitted into the groove portions 12A and 12B shown in FIG. 1, respectively, and the mounting screw 17 is inserted into the mounting hole and screwed and fixed. . Figure 4
(2) is a system using the DIN rails 21 or 22, and in this case, for example, the DI rails 10 shown in FIG.
Attach it by inserting the N rail 21. At this time, the locking portion 9 provided at one end of the second movable body 7 is
The side edge of the N rail 21 is locked to achieve a reliable mounting state. FIG. 4 (3) shows a JIS agreement type system in which the mounting melon 23 fixed to the mounted portion L is fitted into the grooves 15A and 15B formed on the bottom surface of the capacitor body 1 and the top surface of the terminal block 16. Attach and fix with.

In the above embodiment, the capacitor body 1
Both ends of the first movable body 4 slidable in the groove 3
And the second movable body 7 is used for mounting, but one end is mounted through the movable body, and the other end is mounted by inserting a mounting screw into a mounting hole provided in the capacitor body 1 itself. You may do it by doing. In this case as well, so-called free pitch attachment is possible. Further, although the capacitor mounting structure has been described in the above embodiments, the present invention is not limited to the capacitor, but can be applied to a mounting structure of various devices which are mounted on a mounted portion by using at least mounting screws, and are equivalent. Produce an effect.

[0017]

As described above, the device mounting structure according to the present invention is provided with the predetermined groove portion and the convex portion and is provided with the predetermined movable body, so that the so-called free pitch mounting using the mounting screw is possible. In addition, the device can be securely and firmly fixed by screwing the mounting screw. Further, by providing the predetermined first and second movable bodies, the adjustment operation of the mounting pitch can be performed more smoothly. Furthermore, by forming a predetermined rail groove and providing a predetermined locking portion on the second movable body, it is possible to mount it via a so-called rail. As described above, in the method of mounting the device according to the present invention, first, the first movable body is clamped and fixed, the mounting pitch is adjusted, and then the second movable body is clamped and fixed. The mounting pitch can be adjusted smoothly, and the device can be securely and firmly mounted.

[Brief description of drawings]

FIG. 1 is a perspective view for explaining the details of a capacitor mounting structure according to an embodiment of the present invention, as viewed from the back side which is the mounting surface thereof.

FIG. 2 is a perspective view of the entire capacitor as seen from the front side.

FIG. 3 is a diagram for explaining how to attach the capacitor body 1 to the attached portion L.

FIG. 4 is a diagram showing a mounting state of another applicable system.

[Explanation of symbols]

1 is a capacitor body as a device, 2 is a mounting surface, 3A,
3B and 3C are groove portions, 4 and 7 are first and second movable bodies, 5 and 8 are mounting holes, 9 is a locking portion, 10 is a rail groove, 11A and 11B are convex portions, 17 is a mounting screw, L
Is an attached part.

Claims (4)

[Claims] 1. A device mounting structure for mounting a device with its mounting surface brought into contact with a mounted portion using a mounting screw, wherein the mounting surface extends parallel to the mounting surface in one direction. A dovetail-shaped groove is formed, and a mounting hole which is slidably fitted in the groove and into which the mounting screw is inserted is provided. One end of the mounting surface is configured to be projectable from the edge of the mounting surface in the one direction. When the movable body is equipped with a movable body, the mounting screw is inserted into the mounting hole of the movable body and is screwed into the mounted portion to tighten the movable body, the movable body presses the inner surface of the groove portion and slides. In order to increase the frictional force of the mounting surface, convex portions protruding by a predetermined dimension from other portions of the surface of the mounting surface are formed on both sides of the groove at the edge of the mounting surface. 2. As a movable body, a first movable body which can be projected from one end edge in one direction of the mounting surface and a second movable body which can be projected from the other end edge in one direction of the mounting surface. In the second movable body, the gap formed between the surface of the movable body and the mounted portion due to the presence of the convex portion is larger in the second movable body than in the first movable body in the state of being in contact with the mounting surface. The mounting structure for the device according to claim 1, wherein 3. A rail groove in which a rail for mounting a device can be fitted is formed on a mounting surface orthogonal to the groove portion, and the end of the rail can be locked to the other end of the second movable body. The device mounting structure according to claim 2, wherein a portion is provided. 4. A first movable body mounting step of inserting a mounting screw into a mounting hole of a first movable body, screwing the mounting screw into a predetermined position of a mounted portion, and tightening and fixing the first movable body. First
Mounting pitch adjusting step of adjusting the pitch of the mounting screws by moving the device in one direction with respect to the movable body for a predetermined distance, and
The second movable body mounting step of inserting a mounting screw into a mounting hole of the movable body, screwing the mounting screw into a predetermined position of a mounted portion, and tightening and fixing the second movable body. How to install.