JPH1154960A - Electric equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of electric equipment as a whole by arranging part of screw threading holes, so that the holes may be closed by a mobile hook when the hook is at a rail holding position or may be opened in such states that screws can be threaded through the holes when the hook is at a screw fixing position. SOLUTION: A mobile hook 15 made of a resin such as the polyacetal, etc., is attached to the bottom face of a case 11, and a rail holding section 15a for holding a DIN rail 2 which is put in a rail groove 12 as a supporting rail is provided on the hook 15. In addition, a plurality of screw threading holes 13 are provided through the bottom plate of the case 11, so that the holes 13 may be closed by the hook 15 when the hook 15 is at a rail holding position, or may be opened in a state where screws can be inserted into the holes 13 when the hook 15 is at a screw fixing position. Therefore, the size of electric equipment can be reduced as a whole while the selection of the fixture of the electric equipment to the rail 2 or by means of the screws is allowed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric device having both a mounting portion to a support rail and a screw mounting hole as a mounting portion to a panel.

[0002]

2. Description of the Related Art FIG. 8 is a rear view showing an example of a conventional electric device, and FIG. 9 is a perspective view of FIG. In the figure, a rail groove 3 into which a DIN rail 2 as a support rail is fitted and a plurality of screw mounting holes 4 through which screws (not shown) are inserted are provided on the bottom surface of a case 1 molded with resin. Is provided. Also, from one side wall of the rail groove 3, D
A fixed hook 5 that holds the IN rail 2 protrudes.

Further, a movable hook 6 is slidably mounted on the bottom of the case 1. This movable hook 6
Is provided with a rail holding portion 6a for holding the DIN rail 2 fitted in the rail groove 3. The movable hook 6 has a spring portion 6b for automatically returning the movable hook 6 to the rail holding position shown in FIG.
A knob 6c for displacing the movable hook 6 to a release position for releasing the holding of the movable hook 6 is provided. Protrusions 7, 8 for positioning the movable hook 6 at the rail holding position by engaging with the spring 6c are provided on the bottom surface of the case 1.

In such an electric device, by sliding the movable hook 6 in the direction of the arrow in FIG. 10, the spring portion 6b is disposed between the projections 7 and 8 over the projection 7 and the movable hook 6 is Attach to 1. Also,
When the electric device is mounted on the panel, the knob 6c is pulled downward in FIG. 8 against the spring portion 6b, and the movable hook 6 is displaced to the release position. Then, as shown in FIG.
The DIN rail 2 fixed to the panel is fitted into the rail groove 3. Thereafter, when the hand is released from the knob 6c, the movable hook 6 automatically returns upward as shown in FIG. 12, and the DIN rail 2 is held in the rail groove 3 by the fixed hook 5 and the rail holding portion 6a. You. Thereby, the electric device is attached to the DIN rail 2.

[0005] Further, the electric device mounted on the DIN rail 2 as described above can be easily removed from the DIN rail 2 by performing the above-described reverse procedure. In contrast,
If a more rigid mounting is required depending on the degree of vibration and shock applied to the electric machine, a screw is inserted into the screw mounting hole 4 and the electric device is directly screwed to the panel.

[0006]

In the above-mentioned conventional electric equipment, the bottom surface of the case 1 is almost always mounted on the panel by using only one of the DIN rail 2 and the screw. Since the movable hook 6 and the screw mounting hole 4 are independently arranged on the case 1, the case 1 needs a width for providing the screw mounting hole 4 in addition to the width of the movable hook 6 (length in the left-right direction in FIG. 8). This prevents the case 1 from being downsized.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to reduce the overall size while selectively allowing attachment to a support rail and attachment by screws. The purpose is to obtain an electrical device that can perform

[0008]

According to a first aspect of the present invention, there is provided an electric apparatus having a rail groove in which a support rail provided on a panel is fitted, and a plurality of screws into which screws for screwing the panel are inserted. A mounting member having a screw mounting hole, and a rail holding portion for holding a support rail fitted in the rail groove, a rail holding position for holding the support rail, and releasing the holding of the support rail. A movable hook attached to the mounting member so as to be displaceable between a release position and a screw fixing position for fixing the mounting member to the panel with screws, at least a part of the screw mounting hole is provided such that the movable hook is at the rail holding position. When the movable hook is in the screw fixing position, the movable hook is arranged to be opened so that the screw can be inserted.

According to a second aspect of the present invention, there is provided the electric device, wherein a knob for displacing the movable hook between the rail holding position and the release position is provided on the movable hook, and when the movable hook is at the rail holding position and the release position. Protruding from the mounting member,
A knob is arranged so that the movable hook is hidden inside the mounting member when the movable hook is at the screw fixing position.

According to a third aspect of the present invention, a spring portion for automatically returning the movable hook from the release position to the rail holding position is provided on the movable hook, and the movable hook is held on the rail by engaging the spring portion. The mounting member is provided with a plurality of protrusions for positioning at the position and the screw fixing position.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. 1 is a side view showing an electric apparatus according to Embodiment 1 of the present invention, FIG. 2 is a side view seen from below in FIG. 1, and FIG. 3 is a rear view seen from right in FIG. In the figure, a rail groove 12 into which a DIN rail 2 as a support rail is fitted, and a plurality of screw mountings through which screws (not shown) are inserted are provided on the bottom surface of a case 11 as a mounting member molded of resin. A hole 13 is provided. Also,
A fixed hook 14 for holding the DIN rail 2 protrudes from one side wall of the rail groove 12.

A movable hook 15 made of a resin such as polyacetal is attached to the bottom of the case 11. The movable hook 15 is provided with a rail holding portion 15a for holding the DIN rail 2 fitted in the rail groove 12. The movable hook 15 holds the DIN rail 2 in the rail holding position shown in FIG. 3, the rail holding position is displaced downward in FIG. 3 to release the holding of the DIN rail 2, and the screw fixing position shown in FIG. And can be displaced.

The screw mounting hole 13 on the movable hook 15 side overlaps with the movable hook 15 when the movable hook 15 is at the rail holding position, and is opened so that a screw can be inserted when the movable hook 15 is at the screw fixed position. It is arranged so that. Further, the other screw mounting hole 13 is provided with the movable hook 1.
5 is provided in a range extended in the sliding direction.

The movable hook 15 is provided with a spring 15b for automatically returning the movable hook 15 from the release position to the rail holding position, and for displacing the movable hook 15 to a release position for releasing the holding of the DIN rail 2. Knob 15c is provided. The knob 15c is provided with an opening 15d for opening the screw mounting hole 13 when the movable hook 15 is at the screw fixing position. Case 1
Protrusions 16 to 18 for positioning the movable hook 15 at the rail holding position and the screw fixing position by engaging with the spring portion 15c are provided on the bottom surface of 1.

FIG. 5 is a sectional view taken along the line V--V in FIG. The projection 16 is provided with an inclination 16 a so that the spring 15 b can get over the projection 16 when the movable hook 15 is mounted on the mounting member 11. In addition, the protrusion 17 has
The movable hook 15 moves between the rail holding position and the screw fixing position.
The inclinations 17a and 17b are provided so that the spring portion 15b can get over the projection portion 17 when displacing.
Further, the projection 18 is formed in a cylindrical shape so that when the movable hook 15 is displaced to the release position, the spring portion 15b is elastically deformed and automatically returns to the rail holding position.

In FIG. 2, a notch 19 for inserting a screw into the screw mounting hole 13 is provided on a side surface of the case 11.
Is provided. Reference numeral 20 denotes a connector for external connection.

When such an electric device is mounted on the DIN rail 2, the knob 15c is pulled downward in FIG. 3 to elastically deform the spring portion 15b and move the movable hook 15 to the release position. In this state, the DIN rail 2 is fitted into the rail groove 12, and the hand is released from the knob 15c. As a result, the movable hook 15 automatically returns to the rail holding position, and the DIN rail 2 is held in the rail groove 12 by the fixed hook 14 and the rail holding portion 15a.
Thereby, the electric device is attached to the DIN rail 2.

Further, when an electric device is screwed to a panel,
The movable hook 15 is moved to a screw fixing position as shown in FIG. Thereby, the screw mounting hole 13 is opened through the opening 15d, and the knob 15c is
Retract inside. In this state, a screw is passed through the screw mounting hole 13 and fastened to the panel.

In the electric device configured as described above, since the two screw mounting holes 13 are provided within the range of the width of the movable hook 15, the width of the case 11 is adjusted to the width of the mounting portion to the DIN rail 2. It can be reduced to about the same as the width. Further, since the screw mounting hole 13 is opened by moving the movable hook 15 to the screw fixing position, the movable hook 15 does not hinder the screw fixing.

Furthermore, in this example, when the movable hook 15 is moved to the screw fixing position, the knob 15c is hidden under the cover 11, so that the mounting area when fixing the electric device with the screw is reduced. Can be.

Embodiment 2 FIG. Next, FIG. 6 is a rear view showing an electric apparatus according to Embodiment 2 of the present invention, and FIG. 7 is a rear view showing a state where the movable hook 15 of FIG. 6 has been moved to a screw fixing position. In this example, four screw mounting holes 13 are provided in the case 11, and the two screw mounting holes 13 on the movable hook 15 side overlap with the movable hook 15 when the movable hook 15 is at the rail holding position, and are movable. The hook 15 is arranged to be opened when the hook 15 is at the screw fixing position. Further, the two screw mounting holes 13 on the opposite side to the movable hook 15 are arranged so as to overlap the range in which the movable hook 15 extends in the sliding direction. Other configurations are the same as those in the first embodiment.

As described above, even when the four screw mounting holes 13 are provided, the screw mounting holes 13 on the side of the movable hook 15 are arranged in the sliding range of the movable hook 15 so as to overlap the case 11. Can be reduced to about the same as the width of the mounting portion to the DIN rail 2.

The present invention can be applied to various devices such as a sequencer as long as it is an electric device which can be selectively mounted on a control panel or a switchboard or the like by using either a DIN rail or a screw. . Further, in the above example, the DIN rail 2 is shown as a support rail, but a support rail of another shape may be used as long as it supports an electric device.

[0024]

As described above, in the electric apparatus according to the first aspect of the present invention, at least a part of the screw mounting hole overlaps with the movable hook when the movable hook is at the rail holding position.
When the movable hook is in the screw fixing position, it is arranged so as to be opened so that the screw can be inserted, so that it can be selectively mounted on the support rail and screwed, while reducing the overall size. Can be.

According to the second aspect of the present invention, since the knob of the movable hook is hidden inside the mounting member when the movable hook is at the screw fixing position, the mounting area when fixing with the screw is reduced. Can be.

According to a third aspect of the present invention, a spring portion for automatically returning the movable hook from the release position to the rail holding position is provided on the movable hook, and the movable hook is engaged with the spring portion to move the movable hook to the rail holding position. Since the plurality of protrusions for positioning the screw and the screw fixing position are provided on the mounting member, the position of the movable hook can be easily switched between the rail holding position and the screw fixing position.

[Brief description of the drawings]

FIG. 1 is a side view showing an electric device according to a first embodiment of the present invention.

FIG. 2 is a side view as viewed from below in FIG. 1;

FIG. 3 is a rear view as viewed from the right side of FIG. 1;

4 is a main part rear view showing a state where the movable hook of FIG. 3 is moved to a screw fixing position.

FIG. 5 is a sectional view taken along line VV of FIG. 3;

FIG. 6 is a rear view showing an electric device according to a second embodiment of the present invention.

FIG. 7 is a rear view showing a state where the movable hook of FIG. 6 has been moved to a screw fixing position.

FIG. 8 is a rear view illustrating an example of a conventional electric device.

FIG. 9 is a perspective view of FIG.

FIG. 10 is a perspective view showing a state where a movable hook of FIG. 9 is removed.

11 is an explanatory view showing a method of fitting a DIN rail into the rail groove of FIG.

FIG. 12 is an explanatory diagram showing a state at the latter stage of FIG. 11;

[Explanation of symbols]

2 DIN rail (support rail), 11 case (mounting member), 12 rail groove, 13 screw mounting hole, 15 movable hook, 15a rail holding section, 15b spring section, 1
5c Knob, 16-18 protrusion.

Claims (3)

[Claims] 1. A mounting member having a rail groove into which a support rail provided on a board is fitted, and a plurality of screw mounting holes through which screws for screwing the board are inserted, and A rail holding portion for holding the support rail fitted in the rail groove, a rail holding position for holding the support rail, and a release position for releasing the holding of the support rail,
A movable hook attached to the mounting member so as to be displaceable between a screw fixing position for fixing the mounting member to the board with the screw; at least a part of the screw mounting hole, An electric device, wherein the electric device is arranged so as to overlap with the movable hook when it is at a rail holding position and to be opened so that the screw can be inserted when the movable hook is at the screw fixing position. 2. A movable hook is provided with a knob for displacing the movable hook between a rail holding position and a release position, and the knob is configured to move the movable hook between the rail holding position and the release position. 2. The electric device according to claim 1, wherein the electric hook protrudes from the mounting member at a certain time, and is arranged to be hidden inside the mounting member when the movable hook is at the screw fixing position. 3. The movable hook is provided with a spring portion for automatically returning the movable hook from the release position to the rail holding position, and the mounting member is provided with the movable hook by engaging the spring portion. The electric device according to claim 1, wherein a plurality of protrusions are provided for positioning at the rail holding position and the screw fixing position.