JPH0524179Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a mounting device for mounting various instruments to a panel such as a control panel board.

<Prior Art> Conventionally, various methods have been proposed for attaching instruments to mounting holes of control panels and the like. For example, when installing, insert the instrument case into the mounting hole from the front of the panel, touch the front edge of the instrument case to the edge of the mounting hole, and in this state, attach some kind of fixation from the back side of the panel. By this means, the case itself was integrated and attached to the panel.

<Problems to be solved by the invention> However, with this method, when installing instruments, it is necessary to work not only from the front of the panel but also from the back.

This work on the back of the panel is difficult when a large number of instruments and other equipment are installed in a high density and there is not enough space. It would be extremely convenient if it could be easily removed from the front side.

The present invention has been developed in view of these circumstances.

<Means for Solving the Problems> The feature of the present invention is that the case 1 is inserted from the rear into the mounting hole 2a of the panel 2, and the flange 1a at the front end of the case is inserted into the mounting hole 2a. In instruments in which an electronic component or the like is inserted into the case 1 by being locked to the edge thereof, the opening edge of the case 1 has an enlarged diameter portion 3a at the rear and a narrow diameter portion at the front. A generally convex engagement hole 3 having a diameter 3b is provided, and a clamping groove 6 is formed in the longitudinal direction inside the case opening, while a groove 6 for clamping is formed on the outside in the enlarged diameter portion 3a of the engagement hole 3 from the inside of the case 1. A sliding lock piece 4 with a screw hole 5 having a flange 4a to be passed through and a flange 4b serving as a shielding plate for closing the engagement hole 3 from the inside of the case 1; When installing the case 1, the outer flange portion 4a of the sliding lock piece 4 is passed through the enlarged diameter portion 3a of the engagement hole 3 from the front inside of the case opening. At the same time, the lock screw 7 is inserted into the clamping groove 6 inside the case opening, and by tightening the lock screw 7, the outer flange 4a of the sliding lock piece 4 is inserted into the narrow diameter portion 3b of the engagement hole 3. while guiding the inner flange 4.
The instrument mounting device is characterized in that the engaging hole 3 is closed from the inside at the point a, and the sliding lock piece 4 is drawn toward the panel and its front end is brought into contact with the back surface of the panel.

<Function> Therefore, according to this device, it is easy to install the sliding lock piece 4 and the lock screw 7, and by simply operating the lock screw 7 from the opening side of the case 1 with a tool such as a screwdriver, the instrument can be easily installed. type is attached to the panel.

<Example> FIGS. 1 to 3 show an example of a mounting device for instruments according to the present invention.

In the figure, 1 is a case that has a flange-like flange 1a at the front opening, is closed at the rear, and has electronic components such as instruments built into it, and 2 has a mounting hole 2a for this case. 3 is a generally convex engagement hole formed on the left and right opening edges of the case 1, and 4 is a sliding panel that is engaged with the engagement hole 3 and has a screw hole 5 formed in its longitudinal direction. Moving lock piece, 6
7 is a cylindrical clamping groove formed in the longitudinal direction of the inner wall surface of the case opening, and 7 is clamped by this clamping groove 6 and is inserted into the screw hole 5 of the sliding lock piece 4.
This is a relatively long locking screw that is screwed into the

The sliding lock piece 4 has rectangular collar pieces 4a and 4b on the outside and outside of the main body, and the outer collar piece 4a is passed through the enlarged diameter portion 3a located at the rear of the engagement hole 3 from the inside and forwards. The inner flange piece 4b is formed to be large enough to fit into the engagement hole 3.
It also serves as a shielding plate that closes off the inside from the inside.

Therefore, in order to attach the instrument case 1 to the panel 2 using this device, first, the case 1 is attached to the panel 2.
is inserted into the mounting hole 2a of the panel 2 from the rear until the flange 1a touches the edge of the mounting hole 2a. Next, in this state, insert the sliding lock piece 4 into which the lock screw 7 has been temporarily secured in advance from inside the opening of the case 1, and push the outer collar piece 4a outward from the enlarged diameter part 3a of the engagement hole 3. At the same time,
The shaft portion of the lock screw 7 is press-fitted into the cylindrical holding groove 6. For this reason, the opening of this clamping groove 6 is formed to be slightly narrower than the width of the shaft of the lock screw 7.
By this press-fitting, the lock screw 7 is clamped and temporarily fixed together with the sliding lock piece 4 as shown in FIG. 2, for example.

Next, when the head 7a of the lock screw 7 is tightened with a tool such as a screwdriver, the sliding lock piece 4 will slide and be attracted to the panel 2 side as the screw 7 rotates, and in turn, as shown in FIG. As such, its front end is strongly pressed against the back surface of the panel 2.

Due to this pressure contact, the panel 2 is strongly sandwiched between the flange 1a of the case 1 and the front end of the sliding lock piece 4. That is, the case 1 is integrated with the panel 2 and attached. At this time, since the engagement hole 3 is closed from the inside by the inner flange piece 4b of the sliding lock piece 4, intrusion of dust etc. into the inside of the case 1 is effectively prevented. Thereafter, electronic components of instruments and the like may be inserted from the front of the case 1 by a stabbing method or the like.

In addition, when removing instruments from the panel 2 for repair or replacement, first pull out the electronic components of the instruments from inside the case 1, and then turn the lock screw 7 in the opposite direction with a screwdriver or the like. good.
By this reverse rotation of the lock screw 7, the sliding lock piece 4 retreats, and when it just reaches the enlarged diameter part 3a of the engagement hole 3, it is pulled inward to remove the outer flange 4a, and at the same time, the lock screw 7 is It is released from the clamping groove 6 and taken out from the opening of the case 1. Subsequently, the case 1 may be pulled out from the mounting hole 2 of the panel 2.

In this embodiment, there are two engaging holes 3 and two corresponding sliding lock pieces 4, but
The present invention is not limited to this, and it is possible to further increase the number, or in some cases, it is possible to use only one. Furthermore, the shapes of the engagement hole 3 and the corresponding sliding lock piece 4 are not particularly limited.

<Effects of the invention> As is clear from the above explanation, according to the invention, instruments can be installed from the front side of the panel, and the installation can be done by simple rotation using a tool such as a screwdriver. , it is possible to provide an excellent instrument mounting device that is not affected by the situation on the back side of the panel.

In addition, by screwing the sliding lock piece and the lock screw in advance and fitting the lock screw into the clamping groove, it is extremely easy to temporarily lock the lock, making it easy to use.
Excellent workability can be obtained.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing the entire instrument mounting device according to an embodiment of the present invention, and Figs. 2 and 3 are partial cross-sectional plan views showing the mounting state by the mounting device of the present invention. It is. In the figure, 1... Case, 1a... Flange, 2... Panel, 2a... Mounting hole, 3... Engagement hole, 3a...
Expanded diameter part, 3b...Narrow diameter part, 4...Sliding lock piece,
4a...outer collar piece, 4b...inner collar piece, 5...screw hole, 6...groove, 7...lock screw.

Claims (1)

[Scope of utility model registration request] Insert the case 1 from the rear into the mounting hole 2a of the panel 2, and insert the flange 1a at the front end of the case into the mounting hole 2a.
In instruments in which an electronic component or the like is inserted into the case 1 by being locked to the edge of the case 1, the opening edge of the case 1 has an enlarged diameter part 3a at the rear and a narrow part at the front. A generally convex engagement hole 3 having a diameter portion 3b is provided, and a clamping groove 6 is formed in the longitudinal direction inside the case opening.
A screw that has a flange 4a on the outside that is passed through the enlarged diameter part 3a of the engagement hole 3 from inside the case 1, and has a flange 4b on the inside that also serves as a shield plate that closes the engagement hole 3 from the inside of the case 1. Sliding lock piece 4 with hole 5
and a lock screw 7 that is screwed into the screw hole 5 of the sliding lock piece 4. When installing the case 1, the outer flange 4a of the sliding lock piece 4 is inserted into the engagement hole from the front inside of the case opening. At the same time, the lock screw 7 is inserted into the clamping groove 6 inside the case opening, and by tightening the lock screw 7, the outer flange 4a of the sliding lock piece 4 is secured to the above-mentioned engagement. While guiding the engagement hole 3 to the narrow diameter portion 3b of the engagement hole 3, the inner flange 4a closes the engagement hole 3 from the inside, and the sliding lock piece 4 is drawn toward the panel and its front end is brought into contact with the back surface of the panel. An instrument mounting device featuring: