JPS596598A - Panel buried mounting electric implement - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a panel-embedded electric appliance AK constructed using an electric appliance that can also be attached to a panel surface.

As an example of this type of electrical equipment, heat-type overload joints and vessels are known, and in recessed installation, the appearance in the state is the beauty of the panel surface, the same song and σ) without knowing the vN sum, and the It is desired that installation be simple, and that wiring work, setting of operating scales, and return operations after manufacture are easy.

The conventional panel-mounted thermal type overload relay 1 is, for example, as shown in Figs. Next, although not shown, screw terminal 1aK of relay 1
Connect the wires in advance, then look through the front of the corresponding square hole 4aK provided in the panel 4, and insert the mounting hole 2 of the mounting bracket A2.
a, the mounting hole 4b of the panel 4, and the T screw 5.

Connecting the wires before installation is done because the screw terminals face the front, and for this reason, it is necessary to connect longer wires.1! There is a lot of wasted detail (also, due to the appearance, 60 screws cannot be installed on the panel with the correct size when installing it to the panel 4, and the workability is poor, and the screw 5's bulge appears on the front side of the panel). This invention eliminates the above-mentioned drawbacks of the conventional technology and improves its appearance.This invention provides a panel recessed installation using a panel-chamfered electrical appliance that is easy to install and easy to wire. The purpose is to provide shaped electrical appliances.

According to the present invention, the above object is to provide an electric appliance which has a rectangular box shape and has screw terminals on the back side and locking parts on both sides of the front side and can be mounted on a panel surface, and the electric appliance. A frame-shaped mounting frame that can be locked to the front edge of the square hole provided in the panel has a window that prevents it from being pulled out to the front and allows you to see the skeleton. locking arms that are integrated so as to face each other and have flexibility in opposite directions, the end portions of which engage with each of the locking portions to prevent movement of the electrical appliance toward the rear side; a guide part that is integrated into the back side of the frame and is divided into upper and lower parts, and supports the electric appliance so as to be movable in the front-rear direction, and whose outer side can be inserted into the square hole;
A mounting device is provided in each of the guide parts and has a retaining arm whose tip can be held with a spring force on both upper and lower edges of the back side of the square hole, and the mounting device is installed from the front of the panel. Wanta to install and fit electrical equipment from the back of the panel.

This can be achieved by making it possible to install with just one operation.

Embodiments of the present invention will be described below based on the drawings. In FIGS. 3 to 9, the panel chamfer type thermal overload relay 6 has two sides of a rectangular box-shaped portion on the front side. A recess 6a as a locking portion is provided, and the mounting device 7 has a mounting frame 7 section formed on the front side of the panel 4 by molding resin.
It is composed of locking arms 7b on both sides and upper and lower guide portions 7c integrated on the back side of the mounting frame 7a, and multiple rows of retaining arms 7d provided on each of the upper and lower guide portions 7c. The mounting frame 7a locks onto the front side edge of the rectangular box on the front side of the relay 6 to prevent the relay 6 from being removed from the front.
Window 7m that allows setting of b and return operation of return lever 6c
The locking arm 7b engages with the recess 6a to lock the relay 6.
In order to freely insert and pull out, the locking arm 7b is sandwiched between the locking arms 7b, and the box-shaped part on the front side of the relay 6 is supported movably in the insertion direction on the inside thereof, and the outside of the box-shaped part is supported in the panel 40 square hole 4mK.
Formed in a 7-shape cross section to allow insertion/removal prevention jl
A7d is arranged so that the top and bottom are back to back, and square hole 4a
The tip 7d has an inclined surface that fits on both the upper and lower edges of the back side of the
1, and an arm 7d2 whose tip 7dl applies a spring force when engaged with both upper and lower edges of the square hole 4&. Note that the tip 7
The angle of the inclined surface dl is selected so as to correspond to the tolerance range of the thickness of the panel 4.

With the above configuration, this panel-embedded thermal overload relay is installed on the panel 4 through the square hole 4mVc, first through the mounting device 7 from the front side, and then through the guide section 'le' from the back side.
Push in the K relays 6 and insert the retaining arms 7d into the square holes 4a.
It is only a simple operation of locking the upper and lower edges k of the back side, the locking part 6a, and the locking arm 7b, and the appearance is good because the locking arm 7d is composed of multiple rows with spring properties. Not only is it good, but the mounting condition is also stable. It is impossible to connect the electric wire to the screw terminal 6a of the device 6 when it is installed, as with the conventional type, but it is possible by connecting and inserting it before installation. It is designed to be completely compatible with the panel surface addition type for small quantities.
It is better to have a dedicated series in which the direction of the screw terminal 8a of the relay 8 shown in the figure is changed so that the wire can be connected from the rear side.

Next, another embodiment of the present invention will be explained with reference to FIGS. 10 to 12. The difference between this embodiment and the embodiment shown in FIGS. 3m to 5 is that it can be mounted on panels with different thicknesses. This means that large panels such as switchboards and control centers generally use 3.2-inch iron plates, and small panels use 2.3-inch iron plates. It is due to K.

Therefore, the only difference in this case is, of course, the retaining arm of the mounting device 9, and the rest will be the same as the embodiments shown in FIGS. The mounting device 9 has different arm lengths, that is, the gap from the back of the mounting frame 9a is 2 between G1 and G2.
Different kinds of locking arms 9b and 9C are provided alternately, and when the thickness of the locking arm 9b of the panel 4 is t1, that is, 2.3M, the thickness of the locking arm 9c is t! In other words, it is 5 IC corresponding to the case of 3.2 am. This is a plate thickness of 2.3M.
This is because there is a difference of about 40% in the relationship between 3.2 nun and 3.2 nun, so it is extremely difficult to securely secure them both with a class 12i retaining arm.

Incidentally, the inclined surfaces provided at the tips of each of the locking arms 9b and 9c have a plate thickness of t1. The angles are chosen to accommodate the tolerance range for t+. Therefore, with this configuration, a similarly stable mounting condition can be obtained for panels having a thickness of 2S or similar. In this example, the plate thickness is 2.
Although there are two types, 3.3 mi and 3.2 ff1fi+, it goes without saying that the present invention is not limited to this, and two or more types can be used.

The above embodiments are all examples of application to thermal overload relays, but the point is that at least the front side has a square sheath shape, and the parts that require inspection, adjustment, settings, etc. are arranged on the front and are connected on the back. The present invention can be applied to any electrical appliance provided with a terminal, and the rectangular hole drilled in the outer panel for attachment is not necessarily for one piece, but can also be attached to a horizontally long hole corresponding to the number of pieces.

According to the above-mentioned invention No. 51, it is necessary to provide locking portions on both sides and C of the electrical appliance with a panel surface wheel, and then prepare a mounting device that is attached to the panel from the front side. With just this, a panel-embedded electrical appliance that looks good and is easy to work with can be obtained, and it also contributes to the sharing of parts between series.

[Brief explanation of drawings]

Fig. 1 shows an example of a conventional panel-embedded thermal overload relay, Fig. 2 is a front view of Fig. 1, and Fig. 3 is a panel-embedded thermal overload relay according to the present invention. Type overload joint W
An example of a vessel! Figure 4 is a front view of Figure 3, Figure 5 is a side view showing a modification of the main part of Figure 13, Figure 6 is a perspective view of the main part of Figure 3, and Figure 7. is a perspective view of the mounting fixture ff17 in Figure 3, and Figure 8 is A-A in Figure #1!4.
Blame the line 5jii! +j sectional view of the sleeping area 7; Is the installation shown in Figure 9 in line with the B-B line in Figure 4? i: A sectional view of Fig. 7, Fig. 10 is a perspective view of a mounting device corresponding to Fig. 7 of another embodiment of the panel-embedded thermal overload relay according to the present invention, and Fig. 11 is a 1θ view. FIG. 12 is a sectional view corresponding to FIG. 9 of FIG. 1O. 4... Panel, 4a... Square hole ψ6, 8... Thermal type overload relay as an electric machine, 6a... Recess as a locking part. 6d, 8m...Screw terminal, 7,9...Mounting device, 7
m, 9a... Mounting frame, 7a1... Window, 7b... Locking arm, 7bl... End, 7c... Guide part, 7d, 9
b, 9a... retaining arm, 7dl... tip.

Claims (1)

[Claims] 1) Rear Ill screw terminals are provided and front side σ) 1! i Rectangular shape with a locking part on the side / (Electrical appliance that can also be installed on the flannel surface, and the appliance σ) It is possible to prevent the appliance from being pulled out to the front side and to see into the side. a frame-shaped mounting frame that can be locked to the front side edge of a square hole provided in the panel; An opposing flexible locking arm that engages at the southern end to prevent the electric appliance from moving toward the rear side, and is integrated with the rear surface* of the mounting frame and supports the electric appliance so as to be movable in the front-back direction. and outside b= *a *:
A guide part divided into upper and lower parts that can be inserted into the square hole, and a retaining arm that is provided on each of the guide parts σ) and whose tip can be held with a spring force on both upper and lower edges of the back side of the square hole. The panel is comprised of a mounting device and can be mounted with a one-touch operation by fitting the device into the mounting device (attaching the electrical appliance from the front side of the panel and attaching it to the back side of the panel). Recessed appliances. 2) A panel-embedded electric appliance according to the range HIH1m of the above-described invention, characterized in that the retaining arm is divided into Ik number rows. 3) In the item k described in Claims 231, it is possible to change the arm length of each of the retaining arms divided into the plurality of rows and to enable attachment to different thicknesses of the panel *ia
4) In any one of claims 1 to 3, the screw terminal is provided so that it can be screwed in from the back side. A panel-mounted electrical appliance characterized by: 5) Scope of patent claims i! 11 In any one of Items 1 to 4 of the Journal, the locking portion is a recess, and the end of the locking arm is such that the electric appliance can be freely inserted into it, making it impossible to pull it out.E A panel-embedded electrical appliance characterized by being formed into a toothed shape.