JPH0983161A - Electronic apparatus enclosure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an enclosure which eliminates the damage to guide rails and which protects printed boards in a plurality of stores by a method wherein the guide rails whose outside width size corresponds to the mounting width of every printed board are combined with spacers and the printed boards are installed side by side in the whole mounting region width of the enclosure. SOLUTION: In an electronic apparatus chassis 5, printed boards 1 on which electronic circuits are constituted are installed side by side in such a way that their parallel opposite sides forming outer shapes of their printed-circuit boards 12 are mounted on guide rails 2, they are circuit-connected to a connector 3 which is arranged and installed on the rear surface, they are connected to each other and connected to the outside, and an electronic apparatus is constituted. At this time, the guide rails 2 whose outside width size corresponds to the mounting width size W of every printed board 1 are installed side by side in the whole mounting region width of the enclosure 5 in such a way that the guide rails 2 are combined with spacers 4 whose outside width size corresponds to the mounting width W of every printed board 1. Thereby, it is possible to obtain the electronic apparatus enclosure 5 which is versatile, which eliminates damages to the guide rails 2 and which protects printed boards in a plurality of stories.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board which constitutes an electronic circuit, is installed in parallel by mounting parallel opposite sides forming the outline of the printed circuit board on a guide rail, and is connected to a connector arranged on the rear surface of the printed circuit board. The present invention relates to an electronic device housing configured to configure an electronic device by performing mutual connection and external connection.

In recent electronic devices, electronic circuits are formed on a printed circuit board, and a plurality of the electronic circuits are mounted side by side in a housing and interconnected to be integrated into an electronic device. Therefore, downsizing of the equipment and high-density mounting are demanded, and the high-density mounting of the printed circuit board enables volume high-density mounting of the entire mounting width. From the standpoint of performance, the type has been unified as much as possible, but it is also required to allow 2-3 types of width dimensions and to increase the density when the devices are mounted side by side in a parallel arrangement.

[0003]

2. Description of the Related Art FIG. 6 is a plan view showing a structure of a printed board guide portion of a conventional electronic device housing, in which (a) is a basic mold, (b) is a common mold, and (c) is an integrally molded mold.

In the basic type, as shown in FIG. 6 (a), a guide rail 91 is a rod body which forms a square concave linear rail groove 94 for mounting a printed circuit board, and projections are provided at front and rear positions. The guide rails 91 are made of molded products and are inserted in the horizontal frames 95 provided at the front, rear, upper and lower sides of the mounting portion of the housing, and the rail grooves 94 are made to face each other in the front-rear direction and vertically so that the guide rails 91 correspond to the mounting positions of the printed board. It is fixed to.

In the common type shown in FIG. 2B, the guide rail 91
Is the same as the one described above, and the projection mounting holes 96 for fixing the guide rails 91 to the horizontal frame 95 of the housing are aligned with the basic pitch of the mounting width of the printed board to fill the mounting width area of the housing. A horizontal frame 95 is used which is drilled in.

Further, in the integrally-molded die shown in FIG. 1 (c), an elongated hole 97 is formed in the metal plate according to the mounting width of the printed board to be mounted, and the edge of the hole is bent in one direction to form an adjacent elongated hole. 97
A rail groove 94 for mounting the printed board is formed between them, and all the guide rails 92 are integrally formed with a metal plate in accordance with the mounted printed board to fill the mounting width area of the housing. Another metal plate whose edge is bent in the opposite direction is paired and fixed to the upper and lower surfaces of the mounting portion of the housing so as to face each other.

[0007]

However, in the basic type structure, it is necessary to provide the horizontal frame 95 with the fitting insertion hole for fixing the guide rail 91 in accordance with the combination of the mounting widths of the printed boards to be mounted. The housing cannot be diverted to other combination devices, and the number of types of housing increases with each combination. In the common type, even if there is a difference in the combination of the mounting widths of the printed boards to be mounted, the guide rail 91 can always be fixed in the combination position, but the protrusion fitting insertion holes 96 are closely provided at the basic pitch, The designated position is easy to make a mistake and the guide rails 91 are fitted and fixed one by one, which is not suitable for mass production equipment. The integral molding die is suitable for mass production devices because the guide rail 92 is integrally molded, but the types must be increased for each case having a different mounting combination, and the same as above can be said. The guide rail 91 is a rod, and the front end of the rail groove 94 is easily mounted and widened by a small amount of widening, and the mounting work of the printed board is difficult and time consuming and easily damaged. When mounting a printed board in which a plurality of printed boards are constructed in a plurality of floors, a guide rail for supporting the weight is newly required. There are problems such as.

In view of the above problems, the present invention has a multi-story print in which guide rails can be easily and accurately arranged side by side, is versatile, and can easily be attached to a printed board without damaging the guide rails. An object of the present invention is to provide an electronic device housing that is also considered for boards.

[0009]

[Means for Solving the Problems] [1] A printed board 1 having an electronic circuit as shown in FIG.
The parallel opposite sides forming the outer shape of the printed circuit board 12 are mounted on the guide rails 2 and arranged side by side, and are circuit-connected to the connector 3 arranged on the rear surface to make an interconnection and an external connection to form an electronic device. In the electronic device housing, the guide rail 2 having an outer width dimension corresponding to the mounting width W of the printed board 1 or the spacer having an outer width dimension corresponding to the mounting width W of the guide rail 2 and the printed board 1 is provided. This is achieved by the electronic device casing of the present invention, which is formed by combining 4 and 4 so as to be arranged side by side so as to fill the mounting region width of the casing 5. [2] As shown in FIG. 1, the guide rail 2 is formed with one side wide from the rail groove 21 corresponding to the mounting width dimension of the component mounting side of the printed board 1 on which at least the front end and the rear end are mounted. Further, the electronic device casing of the present invention is also suitable, which is provided with locking means for the lateral frames 51, 52 of the casing 5. [3] Further, as shown in FIG. 3, at least the front end portion of the guide rail 2 is configured such that the rail groove 21 in the wide forming portion is smoothly widened outward on one wide side. This is also achieved by the electronic device casing described in item 2. [4] Alternatively, as shown in FIG. 3, the guide rail 2 is also suitable for any of the above-described electronic device housings of the present invention formed by plane symmetry in the front and rear. [5] Further, as shown in FIG. 3, the guide rail 22 is formed by integrally forming a plurality of rail grooves 21 into which the plurality of printed boards 12 and 13 of the printed board 11 having a plurality of floors are mounted. It is also achieved by any of the above electronic device housings of the invention.

That is, since the guide rail 2 has an outer width corresponding to the mounting width of the printed board 1 to be mounted, the casing 5
The guide rails 2 and the spacers 4 may be arranged side by side in accordance with the mounting of the printed board 1 and the non-mounting part on the mounting board. As a result, the mounting area width of the housing 5 is fully filled, so that there is no drop, and the fixing is fixed before and after. Since it can be easily performed by the engaging means provided at the end, it is possible to easily correct a wrong order and to arrange other combinations side by side, so that the casing 5 can be arranged easily and accurately and has versatility.

Further, since the rail groove 21 is smoothly widened at least at the wide front end portion of the guide rail 2, the printed board 1 can be easily mounted and is not damaged.

Further, the guide rail 2 must have a symmetrical shape in which the upper surface and the lower surface of the housing 5 are opposed to each other.
The same thing can be used properly by turning it upside down and inverting it.

A guide rail 22 having an outer width dimension corresponding to the mounting width and integrally forming a rail groove 21 for supporting the respective printed boards 12 and 13 is provided for the printed boards 11 having a plurality of floors. Therefore, it can be handled in the same manner as the guide rail 2 described above without making any distinction.

Thus, according to the present invention, the guide rails can be easily and accurately arranged side by side, are versatile, and can be easily attached to a printed board without fear of damaging the guide rails. It is possible to provide the electronic device housing described above.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to embodiments shown in the drawings. Throughout the drawings, the same reference numerals denote the same objects.

FIG. 1 is a perspective view showing the configuration of an electronic device housing according to an embodiment of the present invention, and FIG. 2 is each sectional view of the electronic device housing according to the embodiment of the present invention. FIG. 3B is a plan sectional view, FIG. 3 is various guide rails according to an embodiment of the present invention, FIG. 4 is a guide rail according to another embodiment of the present invention, and FIG. 5 is a spacer according to an embodiment of the present invention. Is.

In the embodiment of the present invention, first, as shown in FIG. 3, the guide rails 2 have outer width dimensions of 15.24, 20.32, 25.4 mm corresponding to the mounting width W of the printed board 1 to be mounted.
The three types of guide rails 2a to 2c are provided, and a guide rail 22 having a mounting width of 15.24 mm × two floors is shown as an example of the printed board 11 having a plurality of floors.

In addition to this, this two-story building may have nine types as two combinations of the above-mentioned three types of mounting widths, but only the most frequently used ones are integrally molded, and in the case of a small number, the guide rails 2a to 2c are formed. Two are used in parallel and configured.

In addition to this, a printed circuit board having a three-story structure or more is also conceivable, but the frequency of use is extremely low and, like the two-story structure, individual guide rails 2a to 2c are combined and arranged in parallel according to the hierarchy. And configure it.

The guide rails 2 and 22 are both ABS.
A resin molded product that is a rod shape that has a square concave rail groove 21 that runs straight in the front-rear direction, and the front and rear ends and the center part are mounted on one side of the printed board 1,11 In the front and rear end portions, the end portions of the rail groove 21 are smoothly widened only on the wide side toward the outer side in a predetermined manner at the front and rear end portions, and at the front and rear end portions. On the back side of the housing 5, locking means for the front and rear lateral frames 51, 52 of the housing 5 is formed.

The widening of the ends of the rail groove 21 facilitates insertion of the printed boards 1 and 11, but if the width is excessively increased, the printed board on which the mounting components at the rear end of the printed boards 1 and 11 are mounted next to each other is mounted. It is necessary to widen the area so that such a thing does not occur, as it may hit the 1,11 and damage it.

As an example of the locking means, the horizontal frame 5
It has a cross-section that holds the edges of 1,52 and has a locking portion 25 that projects from the front and rear ends to the full width (width direction). As shown in Fig. 2 (a), the guide rail 2, When 22 is fitted between both lateral frames 51, 52, the edges of the lateral frames 51, 52 can be easily attached by grasping the edges of the lateral frames 51, 52 between the back surface of the 22 and the spring-like claw portion of the tip of the locking portion 25.
It is also possible to move along the edges of the lateral frames 51,52. To remove this, push the claws of the locking part 25 and
It can be done by pushing out while removing the relationship with 2. Therefore, the work of arranging the guide rails 2 and 22 side by side in the housing 5 is simple, and the change to the guide rails 2 and 22 of another type and the additional attachment can be easily performed.

The guide rails 2 and 22 have a wide outer shape corresponding to the mounting width W of the printed boards 1 and 11 to which the front and rear end portions and the central portion are attached, and the middle portion thereof has a thin rod shape having a rail groove 21. When the casings 5 are arranged side by side, a ventilation port is formed in this middle part, and cooling air is ventilated through the ventilation ports formed above and below, or natural convection is performed to mount the printed circuit boards 1, 11
It is designed so that it can be air-cooled.

Further, in this wide portion, the horizontal frames 51 to 53 of the housing 5 are located at this portion, and the lower guide rails 2 and 22 are mounted on the horizontal frames 51 to 53. Supporting the weight and the central wide portion have the effect of increasing the linear strength of the rail groove 21. Of course, the guide rail having a long front-rear dimension is not limited to one location, and it is preferable to provide the wide portions at a plurality of locations according to the number of the intermediate horizontal frames of the housing.

Further, as shown in FIG. 3, the guide rails 2,
Since 22 is formed symmetrically in the front and rear, the housing 5
The same guide rails 2 and 22 can be used above and below. Of course,
As shown in FIG. 4, as another embodiment, a printed board 2,
There is no problem even with a strip-shaped simple asymmetric guide rail having an outer width corresponding to the mounting width W of 22.

As shown in FIG. 5, the spacer 4 has a strip shape having the same outer width as the vacant mounting width W, and is made of an ABS resin in which the same locking portions 25 as above are provided on the back sides of the front and rear end portions. Since it is a molded product, it can be installed side by side just like the guide rails 2 and 22. Of course, in order to reduce the number of types, the outer width is set to three types according to the guide rails 2a to 2c, and a plurality of other sizes are combined to match.
Further, in principle, the mounting portion of the spacer 4 does not have a ventilation hole, but it can be appropriately perforated if necessary.

As shown in FIG. 1, the housing 5 is composed of a main body 55, a rear plate 56, a base portion (not shown), a cooling fan portion, a housing cover, etc., and the main body 55 has a cross section between the left and right side surface plate portions 54. L
It is an integrally cast molded product of aluminum alloy material, in which the horizontal frames 51 and 52 of the character shape are arranged symmetrically in the front and bottom and the top and bottom of the rear, and the horizontal frame 53 of the square bar is installed in the upper and lower parts of the center. The guide rails 2, 22 and the spacer 4 are arranged side by side.

A rear plate 56 is fixed so as to cover the rear surface of the main body 55, and the rear plate 56 is composed of a printed wiring board and corresponds to the arrangement of the printed boards 1 and 11 mounted in parallel. Are provided to connect the printed boards 1 and 11 to each other and externally.

The case 5 has one main body 55,
There is also a structure in which a plurality of main bodies 55 are vertically stacked and fixed. The above embodiment shows an example, and the structure, shape, and
The material is not limited to the above.

[0030]

Thus, according to the present invention, as described above,
With the electronic device housing of the present invention, the guide rails can be easily and accurately arranged in parallel, and even if the arrangement combination of the printed boards having different mounting widths is changed, the guide rails can be selected and arranged in parallel according to the change. It has general versatility, it is safe and easy to mount printed boards, there is no danger of damaging the guide rails, and an electronic device housing that can be used for multi-story printed boards is obtained. It has a great effect in practical use.

[Brief description of drawings]

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

FIG. 2 is a sectional view of each of the electronic device housings according to the embodiment of the present invention (a) a side sectional view (b) a plan sectional view

FIG. 3 Various guide rails according to an embodiment of the present invention

FIG. 4 is a guide rail according to another embodiment of the present invention.

FIG. 5 is a spacer according to an embodiment of the present invention.

FIG. 6 is a plan view showing a structure of a printed board guide portion of a conventional electronic device casing (a) basic mold (b) common mold (c) integral molding mold

[Explanation of symbols]

1,11 Printed board 2,22,91,92 Guide rail
3 Connector 4 Spacer 5 Housing
12,13 Printed circuit board 21,94,98 Rail groove 25 Locking part
51 to 53,95 Horizontal frame 54 Side plate 55 Main body
56 Rear plate 96 Fitting hole for protrusion 97 Slotted hole

Claims (5)

[Claims] 1. A printed circuit board, which constitutes an electronic circuit, is mounted in parallel by mounting parallel opposite sides forming the outer shape of the printed circuit board on a guide rail, and is connected to a connector provided on the rear surface to make a circuit connection. An electronic device housing configured to connect to form an electronic device, the guide rail having an outer width dimension corresponding to a mounting width of the printed board, or a mounting width of the guide rail and the printed board. An electronic device casing, characterized in that the electronic device casing is formed by arranging in parallel with a mounting area width of the casing in combination with a spacer having an outer width dimension. 2. The guide rail is formed such that at least a front end portion and a rear end portion of the guide rail are widened on one side from a rail groove corresponding to a mounting width dimension on a component mounting side of a printed board to be mounted, and a lateral side of a housing. The electronic device housing according to claim 1, further comprising locking means for the frame. 3. The electronic device housing according to claim 2, wherein at least a front end portion of the guide rail has a rail groove in the wide molding portion that is smoothly widened outward on one wide side. . 4. The guide rails are formed symmetrically in the front-rear direction.
The electronic device housing according to any one of the above. 5. The guide rail is formed by integrally molding a plurality of rail grooves into which a plurality of printed circuit boards of a printed circuit board having a plurality of floors are mounted. Any electronic device housing.