JP3458607B2 - Control panel connector mounting structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector mounting structure for a control panel.

[0002]

2. Description of the Related Art Generally, a control panel is provided with a connector for connecting an external input / output cable. As the number of input / output points increases, the number of connectors used increases. This connector mounting structure has a hermetically sealed structure so that harmful substances do not enter the board from the connector mounting portion. In the conventional connector mounting structure,
Although various sealing structures are adopted, there are advantages and disadvantages, and there is no cost advantage. Especially in mass-produced products where low cost is strictly required, work efficiency and cost are greatly influenced by the adopted sealing structure, which is an important point for implementation.

5A and 5B show a side view and a rear view of a conventional control panel, and FIGS. 6A and 6B show a vertical side view and a front view of a connector mounting portion thereof. In the figure,
1 is a board body, and a plurality of connector mounting holes 1a are provided on the back side
Is provided, and four screw holes 1b are provided on the periphery thereof. Reference numeral 2 denotes a square connector, which is provided in the connector mounting hole 1a, and each connector 2 is connected with a plurality of external input / output cables. Reference numeral 2a is a mounting screw insertion hole provided at a position corresponding to the screw hole 1b of the connector 2. Reference numeral 5 has the same outer shape as the connector 2, and the connector mounting hole 5a and the mounting screw insertion hole 5 are located at positions corresponding to the connector mounting hole 1a and the screw hole 1b, respectively.
It is the first rubber packing provided with b. Reference numeral 4 denotes a mounting screw. The mounting screw 4 is screwed into the combination nut 3, then inserted into the mounting screw insertion holes 2a and 5b, and further screwed into the screw hole 1b. At this time, the inner protruding portion 2b of the connector 2 is inserted into the connector mounting holes 1a and 5a.

FIGS. 7 (a) and 7 (b) show a front view and a vertical side view of the combination nut 3, and 6 is a metal pot-shaped aperture washer, and the insertion hole 6a for the mounting screw 4 is formed in the center thereof. Is provided. Reference numeral 7 denotes a rubber packing fitted inside the diaphragm washer 6, and a screw hole 7a into which the mounting screw 4 is screwed is provided at the center thereof.

8 to 10 are vertical sectional side views of connector mounting portions of other conventional control panels. In FIG. 8, a mounting screw insertion hole 1c is provided in place of the screw hole 1b of the panel body 1. , The mounting screw 4 into each mounting screw insertion hole 2a, 5b, 1c
On the inner surface side of the rear panel body 1 inserted in the
And, the nut 8 is screwed on. Further, in the case of FIG. 9, the cap nut 9 is welded to the inner surface side of the mounting screw insertion hole 1c in the board body 1, and the mounting screw 4 is inserted from the outside into each of the mounting screw insertion holes 2a, 5b, 1c. After that, it is screwed to the cap nut 9. Further, in the case of FIG. 10, four stud bolts 10 are erected by welding on the outer periphery of the connector mounting hole 1a of the board body 1, and the mounting screw insertion holes 5b and 2a are attached to the stud bolt 10. Insert the nut 8 and tighten the nut 8.

[0006]

The conventional connector mounting structure of the control panel is constructed as described above. In the case of FIG. 6, the combination nut 3 is used, and the combination nut 3 is small. The screw hole 7a of the rubber packing 7 has only a few screw threads, and it was difficult to screw it into the mounting screw 4. Also, it is difficult to match the pitch between the screw holes 1b and 7a, and if the distance d between them is zero or if the sum of the screw pitch of the mounting screw 4 and the number of screw threads is equal to the top, the mounting screw 4 will be The tightening is performed smoothly, but if they do not match, the screw hole 7a is broken. or,
Since the board body 1 is provided with the screw holes 1a, the workability and sealing performance of the board body 1 are reduced. Furthermore, since the combinatut 3 is provided outdoors, the rubber packing has experienced settling and hardening at an early stage, which also deteriorates the sealing performance.

In the case of FIG. 8, since the combination nut 3 is still used, the workability is poor, and since the nut 8 is used, it takes time to tighten it. The sheet metal workability and sealing performance are good. The total cost ratio was 1.1 with 1 in the case of FIG. In the case of FIG. 9, since the cap nut 9 is welded to the inner surface side of the board body 1, the sheet metal workability becomes the worst, and the total cost ratio becomes 2.6. Further, in the case of FIG. 10, since the nut 8 is used, the tightening time is also required, and especially when the nut 8 is outside the board body 1, it is difficult to secure a pace for this tightening. , Was not feasible. Furthermore, since the stud bolts 10 are planted by welding, the sheet metal workability is also poor.

The present invention has been made in order to solve the above problems, and has workability for attaching a connector,
The purpose is to obtain a control panel connector mounting structure that has good sheet metal workability and sealing performance and a low total cost ratio.

[0009]

According to a first aspect of the present invention, there is provided a connector mounting structure for a control panel, wherein a mounting screw is attached from the outside of the panel body to the connector, the first rubber packing and the panel body. A second rubber packing, which is formed integrally with the metal nut and has a screw hole continuous with the metal nut, is attached to the inside of the board body, and the mounting screw is screwed to the second rubber packing and the metal nut. It is a thing.

According to a second aspect of the present invention, in the connector mounting structure for the control panel, the mounting screws are inserted from the outside of the panel body into the connector, the first rubber packing, and the mounting screw insertion holes of the panel body, and the inside of the panel body is installed. A second rubber packing which is integrally molded with a metal plate having a screw hole and has a screw hole continuous with the screw hole of the metal plate, and a mounting screw is screwed to the second rubber packing and the metal plate. is there.

[0011]

DETAILED DESCRIPTION OF THE INVENTION

Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1A and 1B are a rear view and a vertical side view of a connector mounting portion of a control panel according to Embodiment 1, and FIG. 2 is an enlarged cross-sectional view of a second rubber packing that is also integrally formed with a metal nut. . In the drawing, reference numeral 11 denotes a second rubber packing having the same outer shape as the connector 2 and integrally molded with the metal nut 12, and the metal nut 12 is embedded in a position corresponding to the mounting screw insertion hole 1c of the board body 1. . The metal nut 12 has a screw hole 12a and a flange portion 12b at the inner end. On the other hand, the second rubber packing 1
1 has a connector mounting hole 11a at a position corresponding to the connector mounting hole 1a of the board body 1, and a metal nut 12
It has a screw hole 11b continuous with the screw hole 12a.
Therefore, when the second rubber packing 11 is molded, molding is performed with the molding screw screwed into the screw hole 12a of the metal nut 12, and then the molding screw is removed. A screw hole 11b continuous with the screw hole 12a of the metal nut 12 is formed therein.

When mounting the connector 2, the mounting screws 4 are attached to the connector 2, the first rubber packing 5, and the mounting screw insertion holes 2a, 5 of the panel body 1 from the outside of the panel body 1.
It is inserted through b and 1c, and is screwed into the screw hole 11b of the second rubber packing 11 and the screw hole 12a of the metal nut 12 inside the board body 1.

According to the first embodiment, since each metal nut 12 is embedded in the second rubber packing 11, the mounting screw 4 can be easily tightened, and the screw hole 12a of the metal nut 12 and the second hole 12a can be easily tightened. Screw hole 11 of rubber packing 11
Since it is provided continuously with b, there is no need for pitch adjustment, and workability when attaching the connector 2 was good. Further, the plate body 1 does not require welding or tapping, and has good sheet metal workability and sealing performance. Therefore,
The total cost ratio can be 0.4. or,
Since the flange portion 12b is provided on the metal nut 12, it can be prevented from falling off.

Embodiment 2 FIG. 3 is an enlarged sectional view of a second rubber packing integrally molded with a metal nut in a connector mounting portion of a control panel according to Embodiment 2, in which the metal nut 13 is screwed with a mounting screw 4. The screw hole 13a to be attached is provided, but the flange portion is not provided. Instead, the metal nut 13 is completely embedded in the second rubber packing 11 to prevent it from falling off. In addition, the metal nut 13 of the second rubber packing 11
A hole 11c, which is continuous with the screw hole 13a of the metal nut 13 and is slightly larger than the screw hole 13a, is provided on the outer side portion, and a screw hole 11b continuous with the screw hole 13a is provided on the inner side of the metal nut 13 of the second rubber packing 11. Is provided.

When mounting the connector 2, the mounting screw 4 is inserted into each of the mounting screw insertion holes 2a, 5b, 1c, and then the screw hole 1 of the metal nut 13 is provided inside the board body 1.
3a and the screw hole 11b of the second rubber packing 11 are screwed. The effect is similar to that of the first embodiment.

Embodiment 3 FIG. 4 shows an enlarged cross-sectional view of a second rubber packing integrally formed with a metal plate in a connector mounting portion of a control panel according to Embodiment 3, and 14 has the same outer shape as the connector 2,
The metal plate 14 is a metal plate having connector mounting holes 14a and screw holes 14b at positions corresponding to the connector mounting holes 1a and the mounting screw insertion holes 1c of the board body 1, and the metal plate 14 is provided on the inner end of the second rubber packing 11. It is integrally molded. Of course, the screw holes 11b and 14b are continuously formed.

When mounting the connector 2, after the mounting screw 4 is inserted through the mounting screw insertion holes 2a, 5b, 1c, the mounting screw 4 is attached to the screw hole 1 of the second rubber packing 11.
1b and the screw hole 14b of the metal plate 14 are screwed. The effect is similar to that of the first embodiment.

[0018]

As described above, according to the first aspect of the present invention, since the second rubber packing and the metal nut are integrally formed and the screw hole is continuously formed, the mounting screw is tightened. Is extremely easy, and the workability of attaching the connector is improved. Further, neither welding nor tapping is required for the board body, and sheet metal workability and sealing performance are improved.

According to the second aspect, since the metal plate and the second rubber packing are integrally formed and the screw holes are continuously formed, the same effect as the first aspect can be obtained.

[Brief description of drawings]

FIG. 1 is a rear view and a vertical sectional side view of a connector mounting portion of a control panel according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a second rubber packing integrally molded with the metal nut according to the first embodiment.

FIG. 3 is an enlarged sectional view of a second rubber packing integrally molded with the metal nut according to the second embodiment.

FIG. 4 is a second integrally formed with the metal plate according to the third embodiment.
3 is an enlarged cross-sectional view of the rubber packing of FIG.

FIG. 5 is a side view and a rear view of a conventional control panel.

FIG. 6 is a vertical sectional side view and a front view of a connector mounting portion of a conventional control panel.

FIG. 7 is a front view and a vertical sectional side view of the combination nut.

FIG. 8 is a vertical sectional side view of a connector mounting portion of another conventional control panel.

FIG. 9 is a vertical sectional side view of a connector mounting portion of another conventional control panel.

FIG. 10 is a vertical cross-sectional side view of a connector mounting portion of another conventional control panel.

[Explanation of symbols]

1 ... Board body 1a, 5a, 11a, 14a ... Connector mounting holes 1c, 2a, 5b ... Mounting screw insertion hole 2 ... Connector 4 ... Mounting screw 5 ... first rubber packing 11 ... Second rubber packing 12, 13 ... Metal nut 11b, 12a, 13a, 14b ... screw holes 14 ... Metal plate

Claims (2)

(57) [Claims] 1. A control panel in which a panel body has a connector mounting hole and a plurality of mounting screw insertion holes around the connector mounting hole, the position being provided in the connector mounting hole of the panel body and corresponding to the mounting screw insertion hole of the panel body. A connector having a mounting screw insertion hole, a first rubber packing having a connector mounting hole and a mounting screw insertion hole at positions corresponding to the connector mounting hole and the mounting screw insertion hole of the board body, and a mounting screw of the board body. A second rubber packing in which a metal nut is integrally molded at a position corresponding to the insertion hole, has a screw hole continuous with the metal nut, and has a connector mounting hole at a position corresponding to the connector mounting hole of the board body. , The connector, the first rubber packing, and the mounting screw insertion hole of the board body from the outside of the board body, and the second rubber packing and the metal nut inside the board body. A connector mounting structure for a control panel, which is equipped with a mounting screw that is screwed onto the control panel. 2. A control panel in which a board mounting body has a connector mounting hole and a plurality of mounting screw insertion holes around the connector mounting hole, the position being provided in the connector mounting hole of the board body and corresponding to the mounting screw insertion hole of the board body. A connector having a mounting screw insertion hole, a first rubber packing having a connector mounting hole and a mounting screw insertion hole at positions corresponding to the connector mounting hole and the mounting screw insertion hole of the panel body, and a connector mounting hole of the panel body. And a metal plate having a connector mounting hole and a screw hole at positions respectively corresponding to the mounting screw insertion hole and the metal plate are integrally molded, and have a screw hole continuous with the screw hole of the metal plate, and the connector mounting hole of the board body. A second rubber packing having a connector mounting hole at a corresponding position, and a connector, a first rubber packing, and a mounting screw insertion hole of the board main body are inserted from the outside of the board main body, A connector mounting structure for a control panel, comprising a mounting screw screwed to the second rubber packing and the metal plate inside the panel body.