JPH01152690A - Apparatus for protecting housing from falling - Google Patents

Abstract

PURPOSE:To realize protection against falling by a method wherein a drawing- out type support leg is provided and, after the support leg is drawn out until its bent parts reach the front ends of housing side holding trenches, its free end is pushed down and both the side legs are made to go over protrusions and both the side legs are caught by the backsides of the protrusions. CONSTITUTION:Protrusions 8 and 9 are provided in a storing part 3 at a lower part in front of holding trenches 4 and 5 on both the sides of the storage part 3 and their inclined surfaces 8a and 9a are so formed as to face the inclined surfaces 6a and 7a of respective protrusions 6 and 7 along the extensions of the lower edges of the respective trenches. The backsides of the protrusions 8 and 9 are cut off so as to form latches 8b and 9b. If the free end 2e of the support leg 2 is drawn out from an intermediate stage to the front and pushed down so as to make both the side legs 2a and 2b go over the protrusions 8 and 9 and to make both the side legs 2a and 2b caught by the backside latches 8b and 9b, the function of the protection against falling can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an overturn prevention device for a housing housing a program creation device such as a programmable controller.

(Prior Art) FIG. 5 is a perspective view showing a conventional overturn prevention device for a housing housing a programming device. In the figure, (1) is a vertically placed housing, that is, the main body of the programming device, and on its bottom, U-shaped support legs (2) to prevent falling are formed at the ends of both legs (2a) and (2b). The bent portions (2c) and (2d) facing outward in opposite directions are pivotally attached to each other so as to be swingable.

To prevent such items from falling, first lift the main unit (1) by hand or tilt it to the side, and in this state rotate the support legs (2) counterclockwise as shown by the arrow in the figure. After bringing it out to the front, return the main body (1) to its original vertical position. In this case, attach the free end (2e) of the support leg (2) to the main body (
1), it is possible to prevent the main body (1) from tipping over in the front-rear direction.

(Problem to be Solved by the Invention) Since the conventional device for preventing fall of the housing is configured as described above, the supporting legs (2) cannot be brought forward unless the housing is lifted by hand or laid down. However, there was a drawback that it was not possible to implement a fall prevention function. In addition, if the housing is a programming device and you try to prevent it from falling during operation, the method described above will be used, so you may accidentally touch a key etc. and operate it incorrectly, or the power may be disconnected. There was a problem in that it interfered with operation. Furthermore, even after use, when storing the support legs (2), there is a problem that the housing needs to be lifted or laid down.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to implement the fall prevention function without lifting the case by hand or tilting it sideways when using the support legs. The purpose is to provide a prevention device.

(Means for Solving the Problems) The device for preventing overturning of a housing according to the present invention is provided with bending portions facing oppositely to each other at both ends of a support leg, and the bent portions are formed on both sides in a storage portion of the housing. The retaining grooves are slidably held in the holding grooves, and fixing holes into which the bent portions can be inserted are formed at both ends of each of the retaining grooves, and are recessed from the bottom of the grooves. Protrusions are provided at the edges and at the lower part in front of these holding grooves, respectively, to elastically deform both U-shaped legs when the supporting legs swing, and to cause the bent portions to deviate from the respective fixing holes. It is something.

(Function) In the present invention, since the support legs are of a pull-out type, when using the fall prevention function, the support legs should be pulled with both bent portions facing the case while the casing is placed vertically on the floor. After pulling it out until it reaches the front end of the retaining groove, pushing the free end downward to make both legs go over the protrusion, and engaging the back side of this and both legs can prevent it from falling. .

(Embodiment) Hereinafter, the present invention will be described based on an embodiment in FIGS. 1 to 4, in which parts corresponding to conventional ones are denoted by the same reference numerals.

FIG. 1 is a perspective view showing the overall configuration of the device of this embodiment, FIG. 2 is a bottom view thereof, and FIG. 3 is a front view showing the main parts thereof.
In the figure, (3) is a storage area for the U-shaped support leg (2) provided at the bottom of the programming device main body (1), and the front side thereof has an opening (3a) for allowing the support leg (2) to appear and disappear. At the same time, holding grooves (4) and (5) extending in the front-rear direction are formed on both sides of the inside thereof, and each of these holding grooves (4).

(5) Both bent portions (2c) of the support leg (2), (2
d) is slidably held under pressure. In addition, each of the holding grooves (4) and (5) is recessed from the bottom of the groove at both ends thereof to form the bent portions (2c) and (2c).
Fixing holes (4a) and (4b) into which 2d) can be inserted
, (5a), (5b) are formed, and an inclined surface (6a) is formed on the front end side upper edge of each of the holding grooves (4), (5), respectively, and expands outward from the groove opening edge.

Protrusions (6) and (7) with (7a) are provided, and the free end (2e) of the support leg (2) can be pulled upward from the stored state shown in the upper row of FIG. 4 as shown in the middle row of FIG. When the two legs (2a) and (2b) of this
, (7), the distance between them is narrowed and elastically deformed, so that the bent portions (2c) and (2d) at the ends are deviated from the fixing holes (4a) and (5a) located at the rear. It has become. In addition, inside the storage part (3), at the lower part of the front side of the holding grooves (4) and (5) on both sides, the projections (8)' are arranged along the extension line of the lower edge of the multi-groove. , (7) sloped surface (6a) , (7a
) and the inclined surface (8a).

(9a) are provided, and the back surfaces of these projections (8) and (9) are cut out at a predetermined angle to form locking portions (8b) and (9b). The free end (2) of the support leg (2) is configured as
e) from the state shown in the middle row of Fig. 4 toward you as shown by the broken line in Fig. 1 and push it down.
a), (2b) is located in front of the protrusion (a),
(9) and the sloped surface (8a) on the back side of this,
By engaging (9a) with the legs (2a) and (2b), the fall prevention function can be activated.

When storing the supporting legs (2), make sure to
a), (2b) is squeezed inward by hand to form a protrusion (8),
(9), and from that position, push it to the back and bring it to a horizontal position. When stored, both legs (2a) and (2b) of the support leg (2) have upper and lower protrusions (6), (7), (8), (9) as shown in the upper row of Fig. 4.
Its swing is regulated by

In this way, since the support legs (2) of this example device are pull-out type, there is no need to lift the housing or tilt it sideways when using the fall prevention function, and the housing can be placed vertically on the floor. Because the support legs can be taken in and out while the
There is no need to worry about touching other parts of the housing, which is particularly effective when the housing is a programming device.

In addition, in the above embodiment, the holding groove (
4) and (5) are provided directly on the white screen side of the storage section (3), and the above-mentioned retention is achieved by expanding both legs (2a) and (2b) of the support leg (2) outward by their spring function. The grooves (4) and ('5) have been shown to be compressively held, but this can be achieved by, for example, providing walls that define the internal space of the storage section on both sides in the storage section (3), and this wall. Holding grooves are formed on both sides of the supporting legs (2).
It is also possible to engage the holding groove by narrowing the legs inwardly by the spring function of the legs, and even in such a case, the same effect as in the above embodiment can be achieved.

Further, in the above embodiment, the device of the present invention is used in a programming device, but it goes without saying that the device is not limited to this and can be widely applied to a housing such as a cabinet.

〔Effect of the invention〕

As described above, according to the present invention, the support legs can be easily taken in and out without lifting the housing or tilting it sideways, and the reliability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overall configuration of an embodiment of the device of the present invention, FIG. 2 is a bottom view thereof, and FIG. 3 is a view of the device shown in FIG.
FIG. 4 is an explanatory view showing the operation procedure of the support leg from the rV-rV line direction of FIG. 2, and FIG. 5 is a view corresponding to FIG. 1 showing the conventional device. (1)--Programming jig device body (casing) (2)-
-U-shaped support legs (2a), (2b)...Both legs (2c)
, (2d) - Bent part (3) - Storage part
(4), (5) ---Retaining groove (4a), (4b)
, (5a), (5b) ...Fixing hole (6)
, (7), (11), (9)...Protrusions In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] In a fall prevention device for a case, which includes U-shaped support legs for fall prevention retractably attached to a storage section provided at the bottom of the case, bending portions in opposite directions are provided at both ends of the support legs. The bent portions are slidably and resiliently held in both side holding grooves formed in the storage portion, and fixing holes into which the bent portions can be fitted are provided at both ends of each of the holding grooves from the bottom of the grooves. The upper edge of each holding groove and the lower part in front of the holding groove are formed by elastically deforming both U-shaped legs when the supporting leg swings, thereby forming a bent portion. A fall prevention device for a housing, characterized in that a projection is provided to cause the housing to deviate from each of the fixing holes.