JPH07254791A - Structure of rugged guide rail - Google Patents

Abstract

PURPOSE:To make low the height of an electronic equipment case body, to prevent the generation of the mounting mistake of an assembly work at the time when a guide rail is mounted on the electronic equipment case body and moreover, to cut down the cost of equipment for manufacturing the guide rail. CONSTITUTION:A rugged guide rail 3 shows the form of a rectangular parallelepiped, has each recessed groove in the opposed two surfaces (the upper and lower surfaces) in the longitudinal direction out of the six surfaces of the rectangular parallelepiped and each projected protrusion part on the remaining two surfaces (the left and right surfaces) in the longitudinal direction and has protrusion parts 7 for guide rail mounting two pieces by two pieces on both ends thereof and these protrusion parts are inserted and mounted in holes formed in a guide rail mounting member of an electronic equipment case body. The projected protrusion parts on the two surfaces and the recessed grooves are respectively selected to a printed board housed in a case and a printed board not housed in a case and are fittingly used. Thereby, a single grooved guide rail 3 is used in common for the same kind of the printed boards of the upper stage and the lower stage and the printed boards can be inserted and drawn out in and from the case body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concavo-convex guide rail structure for an electronic device housing, and more particularly to a concavo-convex guide rail structure for inserting and removing a substrate mounted on the electronic device housing.

[0002]

2. Description of the Related Art Conventionally, a guide rail structure for an electronic equipment casing of this kind has been used for sliding and inserting a printed circuit board in the electronic equipment casing.

FIG. 5 is a perspective view showing an example of a conventional electronic equipment casing.

The electronic equipment housing 1 is formed of a backboard 2 to be mounted on the back surface, a plurality of guide rail mounting members 4, a plurality of convex guide rails 8 and a plurality of concave guide rails 9. Convex guide rail 8 and concave guide rail 9
The guide rail mounting protrusions 7 are provided at both ends of both the convex and concave guide rails. The guide rail mounting protrusions 7 are inserted into the holes of the guide rail mounting member 4 for mounting.

In the structure of the guide rail, the convex guide rail 8 is a rectangular parallelepiped and has a convex portion in the central longitudinal direction, and the case-containing printed circuit board 5 is a rectangular parallelepiped and has concave and downward grooves. The convex guide rails 8 are provided above and below the guide rail mounting member 4, and the convex portions of the convex guide rails 8 and the concave shape of the case-containing printed circuit board 5 are engaged with each other, so that the case-containing printed circuit board 5 is mounted on the electronic device casing. Slide the body 1 from the front side and insert it into the back board 2 on the back side.

The concave guide rail 9 is a rectangular parallelepiped and has a concave portion in the central longitudinal direction.
Has an end face, the concave guide rails 9 are provided above and below the guide rail mounting member 4, and the concave portion of the concave guide rail 9 and the end face of the caseless printed circuit board 6 are engaged with each other.
The caseless printed circuit board 6 is slid from the front surface of the electronic device housing 1 and inserted into and removed from the back board 2 on the rear surface.

[0007]

In this conventional guide rail structure, two types of a printed circuit board with a case and a printed circuit board without a case are mounted on a guide rail mounting member of an electronic equipment casing, so that the same printed circuit board is electronically mounted. When multiple stages are mounted on the equipment housing, the height of the electronic equipment housing is increased by mounting the same guide rail with concave or convex sides on the top and bottom of each printed circuit board to the guide rail mounting member. There was a problem that it would end up.

Further, if two types of guide rails are required, the facility cost for manufacturing each becomes expensive, and mounting the two types of guide rails on the electronic equipment housing is an assembly work. There was a problem that mistakes were likely to occur.

Therefore, the present invention improves the problems of the above-mentioned conventional guide rail structure, lowers the height of the electronic equipment casing, and mounts the guide rail to the electronic equipment casing during assembly work. It is intended to prevent mistakes and further reduce the facility cost for manufacturing the guide rail.

[0010]

In order to solve the above-mentioned problems, the present invention provides a guide rail integrally formed of plastic for inserting and removing a grooved case-containing printed circuit board and a case-less printed circuit board into an electronic device housing. A front plate made of metal and a rear plate made of metal of the electronic device housing have a plurality of holes, and the guide rail is a rectangular parallelepiped, and has a concave groove on one side in the longitudinal direction and another pair on the other side. The protrusions are provided in the longitudinal direction, and the protrusions are provided at both ends for attaching the guide rails, and the protrusions at both ends of the guide rails are provided in the holes of the front plate and the rear plate of the electronic equipment casing. By mating the parts, using the guide rails for both the grooved cased printed circuit board and the caseless printed circuit board by selecting the concave groove or the convex projecting portion,
A concavo-convex guide rail structure is provided that can be inserted into and removed from the electron supply housing and guides the upper and lower printed circuit boards with the single guide rail.

[0011]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an electronic equipment casing to which an embodiment of the present invention is applied.

The electronic equipment housing 1 is composed of a backboard 2 to be mounted on the back surface, a guide rail mounting member 4, and an uneven guide rail 3 integrally molded of plastic according to an embodiment of the present invention.

FIG. 2 is a perspective view of an uneven guide rail according to an embodiment of the present invention.

The concavo-convex guide rail 3 is mounted by providing two guide rail mounting protrusions 7 at each end of the concavo-convex guide rail 3, and the guide rail mounting protrusion 7 is a guide rail mounting member. Insert into the hole of No.4 and install.

The shape of the guide rail mounting projection 7 is not clear in FIG. 2, but is, for example, a shape in which a sphere is connected to a cylinder (so-called tungsten light bulb shape),
The hole of the guide rail mounting member 4 is a hole having a similar shape corresponding to the above shape or a groove having a T-shaped cross section, and at least the uneven guide rail 3 is made of plastic and has elasticity, so that the guide rail mounting member 4 is for mounting. The protrusion 7 can be easily fitted in the hole of the guide rail mounting member 4.

The concavo-convex guide rail 3 has the shape of a rectangular parallelepiped, and has a concave groove on two longitudinally opposite surfaces (upper and lower surfaces in FIG. 2) of the six surfaces and the remaining two longitudinal surfaces (FIG. 2). (2 left and right surfaces) has a convex projecting portion, and one concave-convex guide rail is provided between the same printed circuit boards of the case-containing printed circuit board 5 or the caseless printed circuit board 6 mounted in the upper and lower stages. By using 3, it is possible to share the upper and lower stages, and the height space of the electronic device housing 1 can be reduced.

The sectional views of FIGS. 3 and 4 show the electronic device housing 1.
The printed circuit board 5 with the same case and the printed circuit board 6 without the case are mounted on the upper and lower stages of the same by one concavo-convex guide rail 3.

[0019]

As described above, the concave-convex guide rail structure according to the present invention is provided with the concave shape of the two faces facing the four surfaces of the rectangular parallelepiped and the two other surfaces having the convex shape. If the same printed circuit board with or without a case is mounted in a plurality of stages in the device casing, the upper and lower stages can be shared by one guide rail, so that the height of the electronic device casing can be reduced.

Further, when the guide rail is used, there is an effect that it is possible to prevent an installation error in the assembly work for the electronic equipment housing and to reduce the facility cost because the guide rail is manufactured.

[Brief description of drawings]

FIG. 1 is a perspective view of an electronic device housing to which an embodiment of the present invention is applied.

FIG. 2 is a perspective view of an embodiment of the present invention.

FIG. 3 is a cross-sectional view of FIG. 1 taken along the line AA.

FIG. 4 is a cross-sectional view of FIG. 1 taken along the line BB.

FIG. 5 is a perspective view of a conventional electronic device housing provided with a guide rail.

FIG. 6 is a perspective view of a conventional guide rail, in which (a) is a convex guide rail and (b) is a concave guide rail.

FIG. 7 is a cross-sectional view of FIG. 5 taken along the line AA.

8 is a cross-sectional view of FIG. 5 taken along the line BB.

[Explanation of symbols]

 1 Electronic device housing 2 Backboard 3 Uneven guide rail 4 Guide rail mounting member 5 Printed circuit board with case 6 Printed circuit board without case 7 Guide rail mounting projection 8 Convex guide rail 9 Concave guide rail

Claims (2)

[Claims] 1. A guide rail for inserting and removing a grooved printed circuit board with a case and a printed circuit board without a case into and from an electronic device housing, wherein the electronic device housing has a front plate and a back plate having a plurality of holes. The guide rail is a rectangular parallelepiped, and has a groove on one side thereof that is concave in the longitudinal direction and a protrusion on the other pair of surfaces that is convex in the longitudinal direction, and has protrusions at both ends for attaching the guide rail. Then, the protrusions at both ends of the guide rail are engaged with the holes of the front plate and the rear plate of the electronic device housing, and the guide rail is provided on both the printed circuit board with the grooved case and the printed circuit board without the case. By selecting the concave groove or the convex protruding portion, it can be inserted into and removed from the electronic device casing, and the upper and lower printed circuit boards are guided by the single guide rail. guide Rail structure. 2. The uneven guide rail structure according to claim 1, wherein the guide rail is integrally formed of plastic.