JP3022875B1 - Guide rail - Google Patents

Abstract

An object of the present invention is to provide a guide rail in which dust on cold air is prevented from directly hitting a lead, thereby preventing dust from adhering to the lead. SOLUTION: A ventilation hole 17 composed of a plurality of long holes provided in a rail material made of a plate so as to allow air for cooling electronic / electric parts such as panels to pass therethrough, and peripheral holes on both sides of the ventilation hole 17 are provided. In the lower guide rail 7 having a groove 18 for allowing panels to slide freely between rising portions 19 having raised portions, the rising portions 19 on both sides of the groove 18 are bent outward. The airflow that has passed through the ventilation holes 17 is guided by the rising section 19, separates from the rising section 19, and then rises away from the panels.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide rail on which, for example, a panel on which electronic and electric components are mounted is slidably mounted, and a ventilation hole is provided for passing cool air for cooling the electronic and electric components.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a general overall structure of an electronic / electric device having a guide rail of this kind.

The electronic / electric device 1 has a panel 4 composed of a plurality of printed boards 5 as shown in FIG. The panels 4 have device functions divided and mounted on a plurality of printed boards 5.

The panels 4 are mounted on, for example, two upper and lower panel mounting portions 2A and 2B. A plurality of panels 4 are arranged in the horizontal direction between the upper guide rail 106 and the lower guide rail 107 made of, for example, a thin metal plate in each of the panel mounting portions 2A and 2B. The panels 4 are slidable between the upper guide rail 106 and the lower guide rail 107, and can be inserted into and extracted from the apparatus.

[0005] As shown in FIG. 16, a printed board 5 constituting the panels 4 includes an electronic / electric component 1 mounted on the surface thereof.
2 and a lead 13 attached to the electronic / electric part 12
And a connector (not shown) provided at one end of the lead 13.

Here, the lower guide rail 107 is conventionally
As shown in FIGS. 12 and 13, a rail material 116 made of a thin metal plate, a plurality of elongated ventilation holes 117 provided in the rail material 116, and an adjacent ventilation hole 1 are provided.
17 and a groove 118 for slidably disposing the panels 4.

As shown in FIG. 15, the vent hole 117 is formed in a long hole shape, for example, a substantially oval shape, and has cutouts at both ends in the longitudinal direction.

As shown in FIG. 14, the groove 118 is provided between rising portions 119 which are formed by raising portions around the long sides on both sides of the ventilation hole 117. Launcher 119
Stands upright. Therefore, the groove 118 has a U-shape as a whole.

The electronic / electric parts 12 mounted on the printed board 5 of the panels 4 are air-cooled as follows.

When the fan unit 3 is driven,
The cool air sucked from the lower part of the electronic / electric device 1 rises. This cold air includes floating dust and dust deposited on the floor. This cool air first passes through the filter 22, and after the contained dust is collected, cools the panels 4 while ascending the lower panel mounting portion 2B and then the upper panel mounting portion 2A.

At this time, the cool air rises through the ventilation hole 117 of the lower guide rail 107 as shown by an arrow P3 in FIG.
To cool.

[0012]

In the above-mentioned conventional example,
The groove 118 of the lower guide rail 107 is
9 is formed to rise vertically upward and has a U-shape as a whole. Therefore, the cold air is supplied to the lower guide rail 10.
After passing through the ventilation hole 117 of No.7,
The ascent continues vertically and directly hits the lead 13.
That is, extremely fine dust that cannot be completely collected by the filter 22 rides on the cold air and directly hits the lead 13 and adheres.

When dust adheres to the lead 13, an electrical migration (electrical diffusion) occurs and the lead 13
There is a risk of causing corrosion and other factors. Furthermore, if the attached dust is humid, an electrical short circuit may occur, which may cause a failure of the electronic / electric device 1.

It is an object of the present invention to provide a guide rail capable of changing the direction of the flow of cool air rising through a ventilation hole.

Another object of the present invention is to prevent dust on the cold air from directly hitting the lead, thereby preventing the dust from adhering to the lead, thereby preventing electrical migration, lead corrosion, and electrical An object of the present invention is to provide a guide rail having a structure in which a short circuit or the like is prevented.

In order to achieve this object, the plurality of grooves of the guide rail according to the present invention are perpendicular to the guide rail.
Formed by the launched both walls inside is a groove, its
Multiple longitudinal holes, the outside of which is provided alternately in parallel
The upper end of both raised walls
Are bent toward the side corresponding to the ventilation holes .

As described above, the user stands upright on the guide rail.
The upper ends in the longitudinal direction of both walls of the grooved groove are
The upper part corresponding to the long ventilation hole is
The upper opening has a width smaller than the short width of the stoma. So
As a result, the rising cold air from the ventilation holes in the guide rails ,
The air flows along both walls of the groove on both sides of the ventilation hole, and the flow is changed at the upper ends of both walls of the groove bent toward the ventilation hole, so that the air is opened upward.
Since the cool air flow rises from the mouth and away from the surface of the printed board standing upright in the groove , the cooling air
Avoiding direct contact with the printed circuit board leads is minimized. Therefore, dust is prevented from adhering to the leads.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Note that FIG.
Is also used in the description of this embodiment.

FIGS. 2 and 3 show an embodiment of an electronic / electric device 1 having a guide rail according to the present invention.

The electronic / electric device 1 includes panel mounting portions 2A and 2B for mounting panels 4 as an example of a movable body in, for example, upper and lower stages, and panels 4 mounted on the panel mounting portions 2A and 2B. And a fan unit 3 for air cooling.

Here, the panels 4 are composed of a plurality of printed boards 5 as shown in FIG. 8, and the apparatus functions are divided and mounted on the plurality of printed boards 5.

The upper panel mounting section 2 as the panel mounting section
A will be described as an example with reference to FIGS.

The panel mounting portion 2A includes an upper guide rail 6 and a lower guide rail 7, and the upper and lower guide rails 6,
The upper guide rail 6 is fastened to the back wiring board 8 provided at the back of the upper side 7, and the upper cross beam 10 and the lower guide rail 7 erected between the left and right side plates 9 are fastened. 9 and a lower cross beam 11 erected between them.

Each printed board 5 is slidable between an upper guide rail 6 and a lower guide rail 7, and can be inserted into and pulled out of the apparatus.

As shown in FIGS. 4 and 8, the printed board 5 has an electronic / electric component 12 mounted on its surface, a lead 13 attached to the electronic / electric component 12, and one end of the lead 13. Connector 14 provided.

The connector 14 of the printed board 5 can be electrically connected to the connector 15 provided on the back wiring board 8. Thus, power and signals are exchanged between the panels 4 and the back wiring board 8.

As shown in FIGS. 5, 6, and 1, the lower guide rail 7 is made of a rail material 16 made of a thin metal plate.
And a plurality of vent holes 1 formed in the rail material 16.
7 and the ventilation holes 17 adjacent to each other.
And a groove 18 for slidably disposed.

The ventilation hole 17 is formed in a long hole shape, for example, a substantially oval shape, and has cutouts at both ends in the longitudinal direction. The ventilation hole 17 is provided with a rising portion 19 in which portions around the long sides on both sides thereof are raised. This ventilation hole 1
The rising portions 19 on both sides of 7 are bent toward the vent hole 17 by further applying a force after the step of rising vertically upward by drawing or the like.

The rising portion 19 forms a pair of grooves 18 between adjacent ventilation holes 17. The groove 18 is formed in an inverted C-shape in which the rising portions 19 on both sides spread upward.

The rising portion 19 is a pair between two adjacent grooves 18, and as shown in FIG. 8, the air flow path 2 whose cross-sectional area gradually decreases as it goes upward.
0 is formed. When viewed from above, this air flow path 20 forms a narrow straight outflow opening 21 as shown in FIG.

On the other hand, the upper guide rail 6 has the same structure as the lower guide rail 107 shown in FIG.

The fan unit 3 is provided to take in air from below and exhaust it to the upper side. Filter 22
The fan unit 3 is disposed below the lower panel mounting portion 2 </ b> B to remove dust from rising cool air. The wind direction plate 23 is provided in the upper panel mounting portion 2.
It is provided on the upper horizontal beam 10 of A and guides the air to be exhausted to the upper rear surface of the apparatus.

The interface section 24 relays signal transmission and reception between the outside of the apparatus and the back wiring board 8. Further, the insertion / extraction lever 25 is provided at the front end of the printed board 5, and is used when inserting or removing the printed board 5 from the apparatus. Upper and lower cover 2
6A and 26B are provided corresponding to the upper and lower panel mounting portions 2A and 2B.

The electronic / electric device 1 configured as described above
In this case, the cold air is prevented from directly hitting the leads 13 as follows.

When the fan unit 3 is driven,
As shown by an arrow P1 in FIG. 3, the cool air sucked from the bottom of the electronic / electric device 1 is provided with the filter 22, the ventilation holes 17 in the lower guide rail 7 of the lower panel mounting portion 2B, the panels 4, and the like.
A ventilation hole 17 in the upper guide rail 6, a fan unit 3, a ventilation hole 17 in the lower guide rail 7 of the upper panel mounting portion 2A,
The panels 4 are cooled through the panels 4 and the ventilation holes 17 of the upper guide rail 6. The warm air after cooling hits the wind direction plate 23 and is discharged from the upper rear surface of the apparatus.

The rising portions 19 on both sides of the groove 18 of the lower guide rail 7 are bent outward. for that reason,
The cool air that has passed through the ventilation 17 from the lower side of the lower guide rail 7 of the upper panel mounting portion 2A is guided obliquely along the bent rising portion 19 as shown by an arrow P2 in FIG. After being separated from the portion 19, it is vertically lifted away from the panels 4.

Therefore, it is possible to prevent the cold air from directly hitting the lead 13 as much as possible. As a result, dust adhering to the lead 13 is greatly reduced.

The opposed rising portions 19 of the two adjacent grooves 18 form an air flow path 20 whose sectional area gradually decreases as it goes upward. The air flow rises while being throttled in the air flow path 20, passes through the narrow outflow opening 21, and continues to rise. Since the airflow rises after the airflow is restricted, the flow velocity increases. Therefore, the heat dissipation of the electronic / electric component 12 is improved.

In the above-described embodiment, the shape of the rising portions 19 on both sides of the groove 18 is formed in the shape of an inverted C that spreads upward, but is not limited to this. For example, as shown in a rising portion 19 shown in FIG.
As shown in a rising portion 19 shown in FIG.
May be formed so as to be folded back, as in the case of the rising portion 19, in short, as long as the rising portion 19 is bent outward.

In the modified examples shown in FIGS. 9 to 11,
As in the above-described embodiment, the airflow is guided along the rising portion 19 to a position distant from the panels 4 and the airflow is reduced to increase the flow velocity.

However, particularly when the rising portion 19 is formed in an inverted C shape as in the above-described embodiment, the function of guiding the air flow to a position distant from the panels 4 and the function of restricting the air flow are obtained. It can be performed more smoothly than the modified examples shown in FIGS.

[0042]

As described above, according to the present invention,
The following effects are obtained.

(1) According to the guide rail of the present invention,
Since the rising portions on both sides of the groove are bent outward, the direction of the flow of the airflow rising through the ventilation hole can be changed.

(2) According to the electronic / electric device of the present invention, the rising of the groove of the guide rail prevents the air current from directly hitting the lead, thereby minimizing dust from adhering to the lead. it can. Therefore, it is possible to prevent electrical migration, lead corrosion, electrical short-circuit, and the like.

Further, since the air flow path is narrowed by the rising portions of the two adjacent grooves facing each other, the heat radiation of the electronic and electric parts can be improved by increasing the flow velocity of the air flow.

[Brief description of the drawings]

FIG. 1 is an embodiment of a guide rail according to the present invention;
It is sectional drawing of the AA line of FIG.

FIG. 2 shows an electronic device equipped with a guide rail shown in FIG.
It is a perspective view showing the appearance of an electric device.

FIG. 3 is a cross-sectional view of the electronic / electric device of FIG. 2 taken along line BB.

4 is an exploded perspective view of a part of the electronic / electric device of FIG.

5 is an overall perspective view of a part of FIG. 4 and the guide rail shown in FIG. 1;

FIG. 6 is a partially enlarged view of the guide rail of FIG. 5;

FIG. 7 is a schematic plan view of a part of the guide rail of FIG. 5;

8 is an operation state diagram of the electronic / electric device of FIG. 3 including the guide rail of FIG. 1;

FIG. 9 is a sectional view of a modified example of the guide rail of the present invention.

FIG. 10 is a sectional view of another modified example of the guide rail of the present invention.

FIG. 11 is a sectional view of still another modified example of the guide rail of the present invention.

FIG. 12 is a perspective view of a conventional guide rail.

FIG. 13 is a partially enlarged view of the guide rail of FIG.

14 is a sectional view of the guide rail of FIG. 13 taken along line CC.

FIG. 15 is a partial plan view of the guide rail of FIG. 12;

FIG. 16 shows the electronic device of FIG. 3 with the guide rail of FIG.
FIG. 4 is an operation state diagram of the electric device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic / Electric device 2A Upper panel mounting part 2B Lower panel mounting part 3 Fan unit 4 Panels 5 Printed board 6 Upper guide rail 7 Lower guide rail 8 Back wiring board 9 Side plate 10 Upper cross beam 11 Lower cross beam 12 Electronic / Electric parts 13 Lead 14 Connector 15 Connector 16 Rail material 17 Vent hole 18 Groove 19 Start-up part 20 Air flow path 21 Outflow opening 22 Filter 23 Winding board 24 Interface part 25 Insertion / extraction lever 26A Opening / closing lever 26B Opening / closing lever

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05K 7/18 G06F 1/20

Claims (6)

(57) [Claims] A plurality of lengths are provided on a guide rail made of a plate material.
A vent hole and a plurality of longitudinal grooves made of hand holes, parallel alternately
In a guide rail in which movable bodies can be movably inserted into grooves provided in a row, a longitudinal rail vertically raised with respect to the guide rail is provided.
The inside of both walls is the groove , and the outside of both walls is the ventilation
A hole, the upper end portion in the longitudinal direction of the both walls, to respond to said vent holes
That have bent towards the side, the short width of the upper opening corresponding to the vent holes, the vent
The air flow from the vent hole is narrower than the short width of the hole, and the air flow is directed upward along the two walls.
A guide rail which flows upward from the opening . 2. A spread of the upper end portion in the longitudinal direction of both walls of the groove
The shape of the vertical cutting surface for the guide rail is inverted
The guide rail according to claim 1, wherein the guide rail is shaped . 3. A guide rail for a longitudinal direction of said groove .
The guide rail according to claim 1, wherein the shape of the vertical cut surface is an inverted bowler hat shape. 4. A longitudinal guide rail of said groove .
The shape of the vertical cutting plane, the guide rail according to claim 1, characterized in that the Hinoji shape. The upper end of the 5. A longitudinal walls of the groove, the
2. The guide rail according to claim 1, wherein the guide rail is completely folded back toward the ventilation hole . 6. A plurality of lengths on a guide rail made of a plate material.
A vent hole comprising a hand hole, a plurality of longitudinal grooves parallel alternately
In each groove of the guide rail provided as above, there is provided a panel composed of a plurality of printed boards having a movable electronic / electric component and a lead attached to the electronic / electric component. In an electrical device, a longitudinally raised vertical to the guide rail
The inside of both walls is the groove , and the outside of both walls is the ventilation
Holes, and the panels are slidably inserted into the plurality of grooves.
In the longitudinal direction of the two walls of the guide rail
An upper end is bent toward a side corresponding to the ventilation hole, and is formed in a longitudinal direction formed by the adjacent two walls.
The short width of the opening is smaller than the short width of the long ventilation hole.
Have been, air for cooling the electronic and electrical components of the panel such that the
Insert the ventilation holes so that the guide rails pass from below to above .
Flow upward along the two walls, and from the opening
The plurality of panels inserted into the grooves.
Electronic / electrical equipment characterized by being blown out between tools .