JPH0436533Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field to which the invention pertains] This invention is based on two methods: rail mounting, in which electrical appliances such as electromagnetic contactors and relays are mounted on the panel surface, via DIN standard rails, and direct mounting, in which they are mounted using fixing bolts. It relates to the structure of a mounting device that can be mounted on both.

[Prior art and its problems]

As this type of mounting device, a structure as shown in the side view of FIG. 4 is known. In other words, a part to which the fixing screw is attached is provided outside the part to which the rail 1 is attached at the bottom of the electrical appliance frame.
It has a structure in which a screw mounting seat 2 having a screw mounting hole 2a through which a fixing screw is inserted is formed.
As shown in Figure 5, even if the main body of the device is made smaller, the screw mounting seat 2 must be provided, and the dimensions of the bottom of the device for mounting on the panel surface are the rail width + the dimensions of the screw mounting seat, so the overall size cannot be made smaller. . In order to solve this problem, it is known to partially cut out the screw mounting seat 12 inward to reduce the outward protrusion and reduce the dimensions, as shown in FIG.
This has the disadvantage that the seat portion that receives the tightening force of the fixing screw is partially cut out, and is weak in strength and that the screw mounting seat 12 portion may be deformed or damaged.

[Purpose of invention]

In view of the above-mentioned circumstances, the object of this invention is to provide a mounting device for electrical appliances that is small, inexpensive, has sufficient mounting strength, and is highly reliable.

[Key points of the idea]

In order to achieve the above-mentioned object, the present invention provides an electric appliance that can be mounted both on a rail and directly with fixing screws, and includes a pair of screws having mounting holes for inserting the fixing screws on both sides of the bottom of the frame of the electric appliance. A mounting seat is formed, and one seat of the pair of screw mounting seats has a fixed hook that engages with the rail, and the other seat has a movable hook that is formed as an engaging pawl that engages the tip of a leaf spring with the rail. The present invention is characterized in that at least one protruding seat having substantially the same height as the screw mounting seat is provided between both screw mounting seats at the bottom of the frame.

[Example of idea]

Figures 1 to 3 show an embodiment of this invention, and screw mounting seats 12 on both sides of the bottom of the frame 11 of the electrical appliance have mounting holes 1 into which fixing screws 13 can be inserted.
4 is provided. A fixed hook 16 for attaching the rail 15 is provided on one seat of the screw mounting seat 12, and a movable hook 17 is provided on the other seat. The movable hook 17 has a spring plate 17a attached to the outer side of the frame 11, and an engaging claw 17b formed at the tip thereof. Screw mounting seat 1
2, a protruding seat 19 is provided at the bottom of the frame 11 on the inner side of the rail width W and so as not to come into contact with the rail 15 or the rail mounting screw 18 when the rail is installed.
The protruding seat 19 is made to be approximately the same height as the screw mounting seat 12 on the panel surface 20.

In such a configuration, if the electrical appliance is to be directly mounted using fixing screws, the mounting holes 14
When the fixing screw 13 is inserted and tightened, the tightening force is received by both the screw mounting seat 12 and the protruding seat 19.
Since the dimension L with respect to the screw mounting seat 19 is much smaller than that in the case without the protruding seat 19, the stress applied to the screw mounting seat 12 is reduced, and therefore, deformation and breakage will not occur. Next, when considering the case of mounting an electrical appliance on a rail, first hook one side of the rail 15 onto the fixed hook 16, and then hook the engaging claw 17b of the movable hook 17.
When pushed into the other side of the rail 15, the engaging claw 17b
The leaf spring 17a is bent in contact with the inclined surface of the movable hook 17, and the engagement claw 17b of the movable hook 17 engages with the rail 15, completing the installation.

Thus, even though it is small, it has a high strength sufficient to withstand screw mounting, and can be manufactured inexpensively so that it can be easily attached and detached even when mounted on a rail.

Note that the protruding seat 19 according to the present invention is illustrated as having a trapezoidal cross-sectional shape, but the reason for providing this protruding seat is to reduce the illustrated dimension L as much as possible, thereby reinforcing the vicinity of the screw mounting seat and reducing deformation. Furthermore, since the shape is intended to improve the ease of mounting on the rail, it is not limited to the trapezoidal shape, and any other shape may be used as long as the purpose can be achieved.

[Effect of idea]

In this invention, screw mounting seats are provided on both sides of the bottom surface on which the electrical appliance is mounted to a panel surface, etc., and a fixed hook and a movable hook for attaching a rail are provided to each of the screw mounting seats, and a protruding seat is provided between the two screw mounting seats. Since this protruding seat is at almost the same height as the screw mounting seat, the screw mounting seat can be mounted without deforming or breaking even if the fixing screw is strongly tightened. By pressing a piece of rail against the movable hook and using the slope, you can easily attach the rail with a single touch operation.
It is possible to provide a small, inexpensive and highly reliable mounting device for electrical appliances.

[Brief explanation of drawings]

Figures 1 to 3 show examples of this invention, in which Figure 1 is a side view of the electric appliance showing the screw installation state, Figure 2 is a side view of the electric appliance showing the rail installation process, and Figure 3 is a side view of the electric appliance showing the rail installation process. The figure is a side view of the electric appliance showing the rail-mounted state, and FIGS. 4 to 6 are side views of conventional electric appliances. 11... Frame, 12... Screw mounting seat, 14
...Mounting hole, 15...Rail, 16...Fixed hook, 17...Movable hook, 17a...Spring plate, 1
7b...Engaging claw, 19...Protruding seat.

Claims (1)

[Scope of utility model registration request] In an electrical appliance that can be mounted both on a rail and directly with fixing screws, a pair of screw mounting seats are formed on both sides of the bottom of the frame of the electrical appliance, each having a mounting hole through which a fixing screw is inserted. A fixed hook that engages with the rail is provided on one seat of the frame, and a movable hook that is formed as an engaging pawl that engages the tip of a leaf spring with the rail is provided on the other seat. A mounting device for an electrical appliance, characterized in that at least one protruding seat having approximately the same height as a screw mounting seat is provided.