JPH0730264A - Case mounting structure - Google Patents

Abstract

PURPOSE:To provide a structure for mounting the case of an electronic device on rails, in which the direction of setting can be selected. CONSTITUTION:Locking claws 34-37 are formed at the wall faces 32a and 33a on one side, which form recesses 32 and 33, of a case 31, which has two orthogonal recesses 32 and 33 at the rear, and a storage recess 40 is formed, which leads to the recesses 32 and 33 from the sections where wall faces 32b and 33b on the other side cross each other at right angles. For example, when a rail 38 is fit in the recess 33, the other side 38a of the rail 38 is caught with locking claws 36 and 37. Accordingly, the other side 38 is pressed and fixed with a lock part 48b. Moreover, when the rail 28 is fit in the recess 32, the other side 38a of the rail 38 is caught with lock pieces 34 and 35, and the said other side 38b is pressed and fixed with a lock part 48a. This way, the selective set up of the rail 38 to the recesses 32 and 33 in both directions becomes possible with one setting-up piece 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case mounting structure for mounting a case of a programmable controller, for example, on a rail having a substantially Ω shape.

[0002]

2. Description of the Related Art Typical conventional techniques for mounting a case are disclosed in JP-A-58-140681 and JP-A-63-3999.
4, Japanese Utility Model Publication No. 63-24602 and Japanese Patent Application No. 4-8257 previously filed by the applicant. Here, the most typical conventional technique, Shoukai 58-1406
81 will be described as a typical example.

FIG. 7 is an exploded perspective view of a case mounting structure showing the above-mentioned prior art. For example, in a structure in which the case 1 accommodating electronic devices such as a programmable controller (hereinafter abbreviated as “PC”) is arranged side by side with the rail 3 of the DIN standard (German national standard), the rail is attached to the rear surface 4 of the case 1. The concave groove 5 corresponding to 3 is formed in a straight line.

A locking projection 7 extending toward the groove 5 is formed on one wall surface 6 of the groove 5, and a bottom surface 8 of the groove 5 is formed.
The one side portion 9 of the rail 3 is sandwiched between and the locking projection 7. The other wall surface 10 of the recessed groove 5 is formed so as to communicate with the storage groove 11 from which the mover 2 projects, and the mover 2 is projected toward the recessed groove 5 side by the elastic force of the spring 12. By the claw 13 provided on the mover 2.
And the bottom surface 8 of the groove 5, the other side portion 1 of the rail 3
Insert 4 In this way, the case 1 is detachably attached to the rail 3.

[0005]

In the above-mentioned prior art, since the concave groove 5 for inserting the rail 3 is provided only in one direction, when the case 1 is assembled to the rail 3, the vertical direction is changed according to the space. It is not possible to select whether to attach or horizontally attach. Therefore, depending on the size of the case 1 and the mounting direction, it is necessary to move the position of the rail 3 or replace the electronic device itself. On the other hand, if the grooves 1 are formed in the case 1 in a plurality of directions, the same number of movable elements 2 as the number of the grooves 5 provided is required for mounting on the rail 3, so that the cost increases and the inside of the case increases. The space of is reduced.

An object of the present invention is to provide a case mounting structure in which an appropriate mounting direction can be selected in accordance with a mountable space and a storage space inside the case can be wide. is there.

[0007]

According to the present invention, in a structure for attaching a case to a longitudinal body, a plurality of concave grooves into which at least a part of the longitudinal body is fitted are formed on the back surface of the case so as to intersect with each other. A locking portion that locks one side portion of the longitudinal body is formed on one wall surface of each of the recessed grooves, and the other wall surface of each of the recessed grooves is formed from a portion where the wall surfaces intersect with each other. A storage recess communicating with the recess is formed, and a mounting piece that is elastically biased toward the recess and locks the other side of the elongated body is provided in the storage recess. It is a characteristic case mounting structure.

[0008]

According to the present invention, in a structure in which an electronic device such as a programmable controller (PC) is housed in a longitudinal body such as a rail of approximately Ω shape so as to be freely rearranged according to the purpose, On the back,
A plurality of concave grooves for mounting the rail are provided so as to intersect with each other.

An engaging portion is formed on one wall surface forming the groove, and a storage groove communicating with each groove is formed on the other wall surface from a portion where the wall surfaces cross each other. . A mounting piece is inserted into the storage groove from the intersection of the grooves. The mounting piece is elastically biased toward the groove by a spring or the like. Thus, one side portion of the longitudinal body fitted in the groove is sandwiched by the locking portion, and the other side portion is attached to the case by pressing the attachment piece.

Therefore, since the longitudinal body can be fixed in two directions with one mounting piece, it is possible to select the mounting direction of the case while ensuring a large storage space in the case.

[0011]

1 is an exploded perspective view showing a mounting structure according to an embodiment of the present invention, FIG. 2 is a rear view thereof, and FIG.
FIG. The case 31 accommodates an electronic device such as a programmable controller (PC), and has a back surface on which a first groove 32 parallel to the long side and a second groove 33 parallel to the short side are provided. Is formed so as to be orthogonal to.

At least a part of a rail 38 having a cross section perpendicular to the axis of approximately Ω is selectively fitted into the grooves 32 and 33. Engaging claws 34 and 35 are formed on one wall surface 32a forming the first groove 32, and similarly, an engaging claw 36 is formed on one wall surface 33a forming the second groove 33. ，
37 is formed.

The first groove 32 and the second groove 33.
On the other wall surface 32b, 33b of the
From the portion where 33b is orthogonal to each other, the concave grooves 32, 3
A storage groove 40 communicating with 3 is formed. The mounting piece 39 is stored in the storage groove 40, and the storage groove 40
An engaging piece 41 and a hitting piece 42 are formed on both wall surfaces 40a, 40b constituting the.

FIG. 4 is a plan view of the mounting piece 39, FIG. 5 is a side view thereof, and FIG. 6 is a front view thereof. Mounting piece 3
9 has a substantially hexagonal outer shape, an elastic portion 45 including an engaging piece 44 is formed in a long hole 43 formed in the center thereof, and guide protrusions 46 are formed on both sides thereof. Also, the mounting piece 3
A grip portion 47 is formed at the rear end portion of the grip 9 for putting a finger on the attachment piece 39 in the D1 direction. Further, at the front end portion of the mounting piece 39, a locking portion 48 for suppressing the rail 38 fitted in the groove 32 or 33 is formed.
The locking portion 48 comprises one locking portion 48a and the other locking portion 48b which are parallel to the concave grooves 32 and 33, respectively, and intersect the axis 49 of the storage concave groove 40 at the same angle. Is formed. Mounting piece 39
Is integrally molded with a material having elasticity such as resin.

For example, the rail 38 is formed in the second groove 33.
When mounting, one side portion 38a of the rail 38 is clamped by the locking claws 36 and 37, and the other side portion 38a is held.
b is pressed and fixed by one locking portion 48a of the mounting piece 39 housed in the housing groove 40.

When mounting the rail 38 in the first groove 32, one side portion 38a of the rail 38 is clamped by the locking claws 34 and 35, and the other side portion 3 is held.
8b is pressed and fixed by the other locking portion 48b of the mounting piece 39 housed in the housing groove 40.

When the mounting piece 39 is attached to the housing groove 40, the axis 4 of the housing groove 40 is formed at the intersection of the grooves 32 and 33.
9 and the axis of the mounting piece 39 are aligned with each other, the grip portion 47 is pulled in the arrow D1 direction parallel to the axis 49. As a result, the guide protrusions 46 cause the bottom surface 40c of the storage groove 40 to
And the locking piece 41, the rear end of the mounting piece 39 abuts against the hitting piece 42 and stops.

When the engaging piece 44 is fitted into the locking hole 50 provided in the accommodation groove 40 and the grip portion 47 is pulled in the direction of the arrow D1, the elastic portion 45 is elastically deformed around the engaging piece 44. Occurs, and elastic force is generated. By releasing the tension, the elastic force becomes a propulsive force in the arrow D2 direction, and the mounting piece 39 is returned to the original position. This elastic force causes the side portions 38b of the rail 38 to engage the locking portions 48a, 48b.
By pressing, the case 31 can be fixed to the rail 38 as described above.

As described above, since the mounting piece 39 is integrally formed including the elastic portion 45, cost reduction can be realized. Further, since the rails 38 in the two directions can be fixed by the single mounting piece 39, the number of the housing recessed grooves 40 of the mounting piece 39 can be smaller than the number of the rails 38.
The internal space can be used effectively.

[0020]

As described above, according to the present invention, a plurality of concave grooves are provided on the back surface of the case, and the mounting pieces are installed at the intersections of the concave grooves. Since it is possible to fix the case, even if a plurality of recessed grooves are formed so that the mounting direction of the case can be selected, the number of mounting pieces can be made smaller than the number of the recessed grooves, resulting in cost reduction. Can be achieved. Moreover, the space in the case can be effectively used.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a mounting structure according to an embodiment of the present invention.

FIG. 2 is a rear view showing the mounting structure.

FIG. 3 is a plan view showing the mounting structure.

FIG. 4 is a plan view of a mounting piece 39.

5 is a side view of the mounting piece 39. FIG.

FIG. 6 is a front view of the mounting piece 39.

FIG. 7 is an exploded perspective view showing a conventional technique.

[Explanation of symbols]

 31 Case 32 1st concave groove 33 2nd concave groove 32a, 33a One wall surface 32b, 33b Other wall surface 34-37 Locking claw 38 Rail 39 Mounting piece 40 Storage concave groove 44 Engaging piece 45 Elastic part 48 Engagement Stop

Claims (1)

[Claims] 1. A structure for attaching a case to a longitudinal body, wherein a plurality of concave grooves into which at least a part of the longitudinal body fits are formed on a back surface of the case so as to intersect each other, and one wall surface of each concave groove. Is formed with a locking portion that locks one side portion of the longitudinal body, and in the other wall surface of each of the recessed grooves, the storage recessed groove that communicates with each of the recessed grooves from a portion where the wall surfaces intersect with each other. And a mounting piece that is resiliently biased toward the groove and that locks the other side of the elongated body in the housing groove.