JPH0329935Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Field of the Invention> This invention relates to a mounting structure for a lid of an electrical device applied to a time switch or the like.

<Prior art and its problems> For example, in the case of a time switch that is attached to a control panel, etc., after the switch body is attached to the control panel, the front cover is removed for wiring work on the input/output section or for maintenance work such as battery replacement. You need to remove it to expose the inside of the switch body.

Conventionally, as shown in FIG. 6A, the front cover 61 is fastened to the switch body 63 using screws 62, or as shown in FIG.
3 into the engagement hole 65 of the front cover 61.
Measures are taken to engage the That is, in either case, the front cover 61 must be completely removed from the switch body 63, and therefore, if consideration is not given to how to handle the front cover and where to place it, the front cover 61 must be removed completely from the switch body 63 side.
This will damage the display section (not shown) of No. 1.
Furthermore, since wiring work is performed while the opening of the switch body 63 remains fully open, there is a risk of inadvertently damaging other components.

<Purpose of the invention> This invention was made in order to solve the above-mentioned conventional problems.It allows wiring work to be easily performed while keeping the opening of the device body in a half-open state, and also allows for easier work during work. The purpose of the present invention is to provide a mounting structure for a lid of an electrical device that can protect the lid and other parts.

<Configuration and Effects of the Invention> The mounting structure for electrical equipment according to this invention includes an elastic hook piece on the opposite wall of either one of the lid body that opens and closes the opening of the equipment main body and the equipment main body. forming grooves on the inner surface of the other opposing wall to engage with each of the elastic hook pieces in a state in which the lid body can slide horizontally, and inserting the elastic hook pieces into the grooves from a vertical direction. An L-shaped groove is formed with a guide groove portion that allows the guide groove to move.

In this invention, by sliding the lid horizontally, a part of the opening of the device body is opened, and the lid is held by the device body.
Wiring and other work can be done without worrying about handling the lid, and damage to the lid and other parts is prevented.

<Description of Embodiments> Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIG. 1 shows an example of a time switch to which the electrical equipment mounting structure according to this invention is applied. In the figure, 1 is a box-shaped switch body,
A predetermined circuit (not shown) and a terminal portion 2 (FIG. 4) are provided inside. Reference numeral 3 denotes a lid body, ie, a front lid, which opens and closes the opening 1a (FIG. 4) of the switch main body 1, and has a display section 4.
Reference numeral 5 denotes a lead wire insertion portion formed on the side wall of the switch body 1.

The engagement structure between the switch body 1 and the front cover 3 will be explained with reference to FIGS. 2A and 2B.

In the figure, outward facing elastic hook pieces 6 (only one of them will be described below) are formed on opposing walls of the switch body 1 to protrude upward. Reference numeral 7 denotes an L-shaped groove formed on each inner surface of the opposing wall portion of the top cover 3 in correspondence with the elastic hook piece 6. The horizontal portion of the L-shaped groove 7 is configured as a grooved portion 8 that engages with the elastic hook piece 6 so that the front cover 3 can slide in the horizontal direction (in the directions of arrows a and b). Reference numeral 9 denotes a guide groove portion constituted by the vertical portion of the L-shaped groove 7, which allows the elastic hook piece 6 to be inserted from the vertical direction to the grooved portion 8, and prevents the elastic hook piece 6 from being forced during assembly. This is to alleviate deformation. Of course, the grooved portion 8 has a lower step than the guide groove portion 9.

Numeral 10 is a convex portion formed on each outer surface of the opposing wall of the switch body 1, and 11 is a convex portion formed on each inner surface of the opposing wall of the top cover 3 so that the convex portion 1 is formed in the closed position of the top cover 3.
0 for the closed position lock. 12
are formed on each inner surface of the opposing wall portion of the front cover 3.
This is a recessed portion for locking the half-open position which engages with the convex portion 10 at the half-opened position.

In the above configuration, in order to fix the front cover 3 to the switch body 1, press the front cover 3 against the switch body 1 at a position where the elastic hook piece 6 on the switch body 1 side hits the guide groove 9 of the front cover 3. The hook piece 6 passes through the guide groove 9 and engages with the groove 8.

If you slide the top cover 3 in the direction of arrow a,
The elastic hook piece 6 moves relatively within the grooved portion 8. When the front cover 3 slides to the closed position shown in FIG. 3A, the protrusion 10 on the switch body 1 side engages with the recess 11 on the front cover 3 side. This closed position can be confirmed by the feeling of moderation when engaged. Therefore, when fixing with screw 13 (Fig. 1) for complete fixation at this position,
Eliminates the hassle of looking for screw holes (not shown)
Screwing work becomes easier.

After the switch main body 1 is attached to a panel etc., when performing wiring work, for example, use the screws 1 mentioned above.
3 and slide the front cover 3 in the direction of arrow b. In the position where the opening 1a of the switch body 1 is partially opened, the convex portion 10 of the switch body 1 engages with the concave portion 12 of the top cover 3, as shown in FIG. 3B. In this open state, the lead wire 15 is connected to the terminal portion 2 using a driver 14 or the like as shown in FIG. In that case, since the front cover 3 is held on the switch body 1, the above-mentioned wiring work can be done without being aware of the handling of the front cover 3, and the display section 4
In addition, there is no risk of damaging other parts inside the switch body 1 due to the half-open state. Of course, the same procedure may be used not only when wiring the terminal portion 2 but also when replacing the battery 16 as shown in FIG. 5.

The elastic hook piece 6 on the switch body 1 side and the L-shaped groove 7 on the front cover 3 are not limited to the above-mentioned configuration, but can also have a completely opposite configuration.

Further, the lid body is not limited to the front lid 3, but may be a back lid or the like. Furthermore, the configuration of this invention can be applied to other electrical devices other than time switches.

[Brief explanation of drawings]

Figure 1 is an external view of a time switch to which the lid mounting structure for electrical equipment according to this invention is applied;
Figures A and B are an exploded perspective view and an assembled perspective view showing the mounting portion of the top cover of the time switch, respectively; Figures 3A and B are explanatory views of the operation of the top cover in the closed and open positions; The figure is a partially cutaway side view of the time switch during wiring work with the front cover half open, Figure 5 is a partially cutaway side view of the time switch during battery replacement work with the front cover half open, and Figures 6A and B are It is an explanatory view of the attachment structure of the cover of the conventional electric device. DESCRIPTION OF SYMBOLS 1... Device body, 1a... Opening, 3... Lid, 6... Elastic hook piece, 7... L-shaped groove, 8...
...Concave portion, 9...Guide groove portion, 10...Convex portion, 1
1, 12... recess.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Both the lid body that opens and closes the opening of the device body and the device body each have an elastic hook piece formed on one opposing wall, and the other opposing wall An L is formed on the inner surface of the L, which includes a concave portion that engages each of the elastic hook pieces in a state in which the lid body can slide horizontally, and a guide groove that allows the elastic hook piece to be inserted into the concave portion from the vertical direction. A mounting structure for a lid of an electrical device, characterized by forming a letter-shaped groove. (2) Scope of Utility Model Registration Claim 1, wherein a concave portion for locking the closed position is formed in a convex portion provided on either the lid body or the device body in the closed position of the lid body. Mounting structure of the lid of the electrical equipment described. (3) Scope of Utility Model Registration Claim 1, wherein a concave portion for locking the half-open position is formed in a convex portion provided on either the lid body or the device body in the half-open position of the lid body. Mounting structure of the lid of the electrical equipment described.