JP2626400B2 - Fan package - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan package of a fan unit for forcibly cooling the inside of an electronic device housing.

In recent years, communication devices have become faster, diversified in functions,
With the demand for compact and high-density devices, the heat generation of the device has increased, and air cooling by natural convection inside the device has become impossible, and forced air cooling using a fan has been required.

Further, if the air cooling stop time due to the failure of the forced air cooling device is long, there is a danger that the internal temperature of the device will rise and the system will stop, causing a serious failure. Therefore, there is a demand for a cooling device structure having good cooling performance and maintainability.

[0004]

2. Description of the Related Art FIG. 3 shows an example of a conventional forced air cooling electronic device, in which (a) is an external view and (b) is a configuration diagram of a fan unit.

[0005] One example of a conventional forced air cooling electronic device is shown in FIG.
As shown in (a), a circuit package 91 in which a large number of electronic components are mounted on a printed wiring board to form a small circuit is arranged side by side on a shelf and interconnected by its backboard to form a circuit unit 9. The circuit unit 9
There are many types depending on the constituent circuits, and these are combined to form a large-circuit system device. A circuit unit 9 is mounted on the main body of the device housing 99, and a power supply unit 92 that controls the distribution of supply power. And a fan unit 8 for performing forced air cooling.

The fan unit 8 is provided for each cooling area of the circuit unit 9 due to its cooling capacity. In the figure, the fan unit 8 is mounted vertically above and below the area of the circuit unit 9 so that the circuit unit in the cooling area is provided. The electronic components are forcibly air-cooled by forcibly ventilating the internal space of the electronic device 9 in the vertical direction.

As shown in FIG. 3B, the fan unit 8 has a fan package 88 to which the axial fan 3 is attached.
And a mounting frame for plug-in connection of the fan package 88, mounting four in parallel, and mounting and fixing the fan package 88 to the device housing 99.
87.

As shown in the figure, the fan package 88 comprises a box 19 having an open top and two axial fans 3 accommodating two, and a connector 18 for plug-in connection to a mounting frame 87 is provided on the rear surface of the box 19. There are two thumb screws for fixing on the front.
17 are penetrated.

To mount the axial flow fan 3, the axial flow fan 3 is mounted in accordance with the ventilation hole 2 formed in the bottom surface of the box 19, and four fixing screws 35 are fixed to the fixing holes at the four corners of the mounting surface 31 on the opposite side. 32 and screwed to the bottom plate to secure it. Axial fan 3
The wiring to is omitted.

[0010]

However, generally, the life of the axial fan 3 is about 30,000 hours,
Its survival rate is about 90%. Therefore, about 10% of the axial fans 3 fail within 30,000 hours, and the maintainability of the fan unit 8 greatly affects the reliability of the electronic device. When a failure occurs in the fan unit 8, it is necessary to immediately perform maintenance such as replacement of the fan package 88 or the axial fan 3, but the fan package 88 is fastened to the mounting frame 87 with two thumb screws 17. It is relatively simple because it is attached and fixed, but if the fan package 88 is replaced as a unit, maintenance costs increase. Further, since the axial fan 3 is fixed to the box 19 of the fan package 88 with four fixing screws 35, a long time is required for the replacement operation. Otherwise, the temperature may rise, malfunctioning the circuit or damaging the components, and may cause a serious failure to stop the system. The fixing screw 35 for fixing the axial fan 3 needs to have a length corresponding to the dimension between the mounting surfaces 31 depending on the type of the axial fan 3, and is not a standard product but a nonstandard product. Inventory management is required, which increases costs. And so on.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a fan package capable of reducing maintenance costs and replacing an axial fan in a short time without affecting the reliability of the apparatus. .

[0012]

SUMMARY OF THE INVENTION The object of the present invention is to mount a mounting frame fixed to a housing and an axial fan as shown in FIGS. 1 and 2, and mount a plurality of plugs on the mounting frame side by side. In a fan unit, which is made up of a fan package and is forcibly air-cooled by ventilating the inside of an electronic device housing in a vertical direction, ventilation holes 2 are provided on bottom surfaces 12 and 14, and an axial fan 3 is accommodated corresponding to the position. Pocket-shaped storage frames 4, 44 are provided,
An opening / closing structure that can be folded and closes or opens the openings of the storage frames 4 and 44, and has an engagement projection 51 on one surface of the tip and engages with an engagement recess 61 provided on the mating surface that is in contact with the same surface The lock is achieved by the fan packages 81 and 82 of the present invention, which are provided with lock levers 5 and 55 which lock the opening / closing and open / close and push the lever to unlock. [1] Specifically, in a box 1 having an open top surface, storage frames 4 are individually provided opposite to each other so as to store two axial fans 3 in front and back, and a bottom surface 12 is bent at the facing portion. More suitable for the fan package 81 of the present invention, wherein the lock lever 5 is freely hinged and protrudes from one of the side surfaces 13 divided at the opposing portion, and an engagement concave portion 61 is provided at the other corresponding position. Can be [2] Further, the axial flow fan 3 is movably mounted on one of the divided side surfaces 13 and is sandwiched between the opposed axial flow fans 3 in a locked state by the lock lever 5 to press and fix the axial flow fan 3 at a predetermined position. The present invention is also applicable to the fan package 81 provided with the movable spacer 7 having elasticity so that the movable spacer 7 can be moved to a position where it does not interfere in the unlocked state. [3] In the box 11 having an open top surface, a collective storage frame 44 having a partition therein is provided with an opening facing the side surface 6 so that a plurality of axial fans 3 can be connected and stored in front and rear. The side surface 6 has both side edges bent in the same direction, one edge 62 is rotatably hinged to the bottom surface 14, and the other edge 63 is fitted into an engagement recess 61 provided on the upper surface of the storage frame 44. This is also achieved by the fan package 82 of the present invention provided with the entire lock lever 55.

[0013]

[Operation] That is, in the fan package 81 of FIG.
Is bent, the opening of the facing storage frame 4 is opened in the folded state, and the axial fan 3 can be easily inserted and removed. In the original locked state, the openings are opposed to each other, so that the openings are closed and the axial fan 3 is stored.

In the fan package 82 shown in FIG. 2, since the side surface 6 pivots to open and close the opening, the opening of the storage frame 44 is closed and the axial fan 3 is stored in the closed locked state. If the door is unlocked and opened, the opening is opened, and the axial fan 3 can be easily inserted and removed.

Locking and unlocking in the closed state are performed by using the lock levers 5 and 55 so that the engagement protrusion 51 is engaged with the engagement recess 61 of the mating member.
And can be easily performed by fitting. When the opening / closing structure is closed, the engagement and engagement are automatically performed and locked, and the unlocking is performed by applying a pressing force to the lever portions of the lock levers 5 and 55 so that the engagement projections 51 come out (see FIG. 1). The lock lever 5 pushes the engaging projection 51 from the outside to the inside, and the lock lever 55 in FIG.

When the axial flow fan 3 is fixed, the movable spacer 7 having elasticity is sandwiched in the opposing gap in the case of the opposing storage shown in FIG. 1, so that the axial fan 3 is pressed inside each of the storage frames 4 and is securely fixed without rattling. .

In a case where the axial fans 3 are stored in a row in FIG. 2, a spring-like pressing member is provided inside the side surface 6 to be closed, so that the axial fans 3 can be collectively pressed and fixed to the storage frame 44. it can.

Thus, the replacement of the axial fans 3 in the fan packages 81 and 82 has good workability, can be securely fixed without using any screws, shortens the work time, and increases the cost of the fan unit. Need not be a unit of exchange.

Thus, according to the present invention, it is possible to provide a fan package capable of reducing the maintenance cost and replacing the axial fan in a short time without affecting the reliability of the apparatus.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings. The same reference numerals indicate the same objects throughout the drawings. FIG. 1 shows an embodiment of the present invention, (a) is a perspective view of the configuration, (b) is a partially enlarged view of an unlocked state, FIG. 2 shows another embodiment of the present invention, and (a) is FIG. 2B is a perspective view showing the configuration, and FIG.

This embodiment is applied to an electronic exchange, and is the same as the external view of the forced air-cooled electronic device shown in FIG. The components mounted on the circuit package 91 are cooled by forcibly ventilating the inside of the circuit unit 9 from the lower part to the upper part by the fan units 8 mounted on the upper and lower sides of the circuit unit 9. Fully compatible with the fan package 88.

One embodiment of the fan package 81 is shown in FIG.
As shown in FIGS. 3 (a) and 3 (b), a sheet metal box 1 having an open top surface is provided with a connector 18 for plug-in connection to a mounting frame 87 shown in FIG. 3 (b) on the rear surface. It is divided into two parts at the approximate center, and hinged to the bottom surface 12 so that it can be bent outward by the hinge 15. The ventilation holes 2 are opened in each bottom surface 12, and the openings are opposed to the corresponding positions. The storage frame 4 is fixed, a lock lever 5 is protruded from one of the divided ends of the side surface 13, and an engaging concave portion 61 is provided at a position corresponding to the other engaging convex portion 51. The movable spacer 7 is axially mounted on one of the opposite side surfaces 13.

The housing frame 4 is made of a pocket-shaped sheet metal for housing the rectangular parallelepiped axial fan 3, and a leaf spring 41 is fixed to the inner surface on both sides opposite to the bottom surface 12.
Is pressed against the bottom surface 12 to be in close contact therewith.

The lock lever 5 is provided with one end of one side of the leaf spring.
The engagement protrusion 51 is formed by attaching a steel material of φ × 2 mm thick. The other end is attached to the inner surface of the side surface 13 with the engagement protrusion 51 facing outward and is protruded.

When the box 1 is not bent, an engaging recess 61 is provided in the side surface 13 at a position corresponding to the engaging protrusion 51 of the protruding lock lever 5 with a through hole of 21 mm. The movable spacer 7 is made of a rubber material of 10φ × 20mm as a spacer, one end of which is inserted into the shaft center, and a fixed portion of a 1φmm steel wire bent at a right angle, and the other end is axially mounted on the side surface 13. Its tip is bent in a predetermined direction to form a stopper for rotation.

When replacing the axial fan 3, the fan package 81 taken out of the mounting frame pushes the engagement projection 51 of the lock lever 5 fitted from the outside of the side surface 13 into the inside, and the fan package 81 is removed from the engagement recess 61. If you remove it, it will be unlocked,
As shown in (b), the bottom surface 12 is bent, and the opening of the storage frame 4 appears.

By rotating the movable spacer 7 to an end position that does not interfere with the movable spacer 7, any of the axial fans 3 can be easily taken out of the storage frame 4. Further, in the bent state, the axial fan 3 is inserted into the storage frame 4 and pushed until it hits the back. At this time, it is important to insert the axial flow fan 3 so that the wind direction is correct and the position of the connection terminal always comes out of the opening.

The inserted axial fan 3 is pressed against the bottom surface 12 by the leaf spring 41 on the inner surface of the storage frame 4 to be brought into close contact. Next, when the movable spacer 7 is rotated back, the bent portion of the fixed portion at the front end abuts against the side surface 13 and stops, and is located at the center of the facing gap of the axial fan 3.

Next, if the bending of the bottom surface 12 is returned,
The engagement convex portion 51 and the engagement concave portion 61 are formed by the spring property of the lock lever 5.
And are locked. By this return, the movable spacer 7 is sandwiched between the axial fans 3 from both sides, and the axial fans 3 are pressed into the storage frame 4 by the repulsive force and securely fixed.

Thus, replacement can be performed easily and in a short time without using a tool. As shown in FIGS. 2A and 2B, in a fan package 82 of another embodiment, one side surface 6 is hinged to a bottom surface 14 of a sheet metal box 11 having an open top surface, and a storage frame 44 is provided. Can be opened and closed collectively.

On the bottom surface 14, three ventilation openings are arranged in a line, and a collective pocket-shaped storage frame 44 having three interior sections is fixed on the bottom surface 14 with the opening facing the side surface 6. Each section of the storage frame 44 has a leaf spring 41 on its inner surface as described above.
Is fixed.

The side surface 6 has both side edges bent in the same direction. One edge 62 is rotatably hinged to the bottom surface 14, and two lock levers 55 project from the other edge 63. Has been established,
Further, a pressing member 66 of a rubber rod body is adhesively fixed at the center of the inner surface.

The lock lever 55 is formed by slightly extending the tip of the lock lever 5 and the leaf spring and warping it toward the side opposite to the engagement protrusion 51. The engagement protrusion 51 is attached to the storage frame 44. In addition, an engaging concave portion 61 of a through hole into which the engaging convex portion 51 is fitted is provided on the upper surface of the storage frame 44 corresponding to the engaging convex portion 51 when the side surface 6 is closed.

When the axial fan 3 is replaced, the engaging projection 51 is disengaged from the engaging recess 61 by pushing up the tip of the locked lock lever 55 in the inserted state, and the side surface 6 is rotated. Then, since the storage frame 44 is opened, any of the axial fans 3 can be easily taken out.

In this state, the axial fan 3 is inserted into a predetermined position of the storage frame 44 while paying attention to its direction, and is pushed all the way. At this time, the axial fan 3 is pressed against and adheres to the bottom surface 14 by the leaf spring 41 on the inner surface.

Next, the side face 6 in the opened state is rotated and closed, and the portion of the engaging projection 51 of the lock lever 55 is pressed,
It is inserted into the engagement recess 61 of the storage frame 44 and locked. In this locked state, the pressing member 66 on the inner surface presses the side surface of the axial fan 3 to securely fix it.

The above embodiment is merely an example, and the mechanism, shape, size, material and number of each part are not limited to those described above. Although the fan package 82 shows a case in which three axial fans 3 are housed, it is clear that the number is not limited, and the housing frames 44 may be provided individually.

The lock lever 55 protrudes from the edge 63 of the side surface 6, but has a box-like side surface, and the lock lever 5 protrudes from both side surfaces thereof to engage with both side surfaces of the storage frame 44 of the other party. The recess 61 may be provided to lock the engagement.

Although the fan packages 81 and 82 have compatibility so that they can be plugged into the conventional mounting frame 87, this is not a necessary condition of the present invention.

[0040]

As described above, the fan package of the present invention enables quick and easy replacement of the axial fan, and can be performed only with the axial fan as a maintenance part, and the reliability of the electronic device can be improved. An effect excellent in maintainability and economic efficiency can be expected without impairing the maintainability.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention. FIG.

FIG. 2 is another embodiment of the present invention. (A) Configuration perspective view (b) Unlocking open state view

FIG. 3 is an example of a conventional forced air cooling electronic device (a) External view (b) Configuration diagram of a fan unit

[Explanation of symbols]

1,11,19 Box 2 Ventilation port 3
Axial fan 4,44 Storage frame 5,55 Lock lever 6,
13 Side surface 7 Movable spacer 8 Fan unit 9
Circuit unit 12,14 Bottom 15 Hinge 17
Thumb screw 18 Connector 31 Mounting surface 32
Fixing hole 35 Fixing screw 41 Leaf spring 51
Engagement protrusion 61 Engagement recess 62, 63 Edge 66
Pressing member 87 Mounting frame 81,82,88 Fan package 91 Circuit package 92 Power supply unit 99
Equipment housing

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-3-270198 (JP, A) JP-A 64-29895 (JP, U) JP-A 1-125594 (JP, U)

Claims (4)

(57) [Claims] 1. An electronic device housing comprising a mounting frame fixed to a housing, and a fan package accommodating an axial fan and having a plurality of plug-ins mounted side by side on the mounting frame. The fan unit, which is forced to cool by air, has a ventilation opening (2) on the bottom surface (12), and a pocket-like storage frame (4) for storing the axial fan (3) An opening / closing structure for freely closing or opening the opening of the storage frame (4), and an engaging projection (51) on one surface of the tip;
A fan package, comprising: a lock lever (5) which engages with an engagement concave portion (61) provided on a mating surface in contact with the same surface, locks and locks the opening and closing, and pushes the lever to unlock. 2. A housing frame (1) having an open top surface, wherein two axial fans (3) are individually arranged facing each other so as to house two axial fans (3) in front and behind.
(4) is provided, the bottom surface (12) is hinged so as to be freely bent at the opposing portion, and a lock lever (5) is protruded from one of the divided side surfaces (13) at the opposing portion, and the other is provided. The fan package according to claim 1, wherein an engagement recess (61) is provided at a position corresponding to (1). 3. A movable state mounted on one of the divided side surfaces (13), and in a locked state by a lock lever (5),
An elastic movable spacer (7) which is sandwiched between opposed axial fans (3), presses and fixes the axial fan (3) at a predetermined position, and is movable to a position where it does not interfere in an unlocked state.
The fan package according to claim 2, comprising: 4. A collective storage frame (44), which is internally partitioned, is provided with an opening so that a plurality of axial fans (3) can be connected and stored in front and behind by a box (11) having an open top. To the side (6),
The side face (6) has both side edges bent in the same direction, and one edge (62)
Is rotatably hinged to the bottom surface (14), and the other edge (63) is provided with a lock lever (55) that fits into the engagement recess (61) provided on the upper surface of the storage frame (44). The fan package according to claim 1, characterized in that: