JPH07307585A - Fan mount frame - Google Patents

Abstract

PURPOSE:To enable easy exchange of a fan in a minimum operation space. CONSTITUTION:A mount frame body 12 is fixed to a through part of a partition 6 inside a power converter device by a screw 4. Then, a fan 1 is contained in the frame body 12 and its upper, lower, right, left and rear surfaces are supported. An upper end tongue 26 of a keep plate 13 bent and formed to realize a crank-shaped cross section is inserted into a groove hole 21 formed in the frame body 12. Then, a surface 24 formed in a lower end of the keep plate 13 is brought into contact with a lower surface 12b of the frame body 12 and fixed by a screw 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan mounting frame used when a thin axial fan is mounted inside a power converter or the like for cooling.

[0002]

2. Description of the Related Art Conventionally, a thin axial fan has been used for cooling an electric power converter, and this fan is usually attached to a through hole formed in a partition of the device via an attachment frame. FIG. 18 shows an example of mounting a conventional fan, and FIG.
9 is a right side view of FIG. As shown in the figure, the conventional fan 1 is housed in the mounting frame main body 2 to support the upper, lower, left, right, and back surfaces, and further, the front surface is supported by the holding plate 3. The mounting frame body 2 and the pressing plate 3 are fixed to the partition wall 6 with screws 4 and 5. Further, FIG. 20 shows the mounting frame body 2
21 is a right side view thereof. As shown in the figure, the mounting frame main body 2 has a hat-shaped cross section as a whole, and folding pieces 2a are formed on both left and right sides of the central recess, and a square hole 2b for ventilation is formed in the central recess. ing. Further, mounting holes 2c for inserting screws are formed on the mounting surfaces at the upper and lower ends.

FIG. 22 is a plan view of the presser plate 3, in which square holes 3a for ventilation are formed in upper and lower two rows on almost the entire center surface.
Mounting holes 3b are formed at the top and bottom. FIG. 23 shows another conventional fan mounting example, FIG. 24 is a right side view of FIG. 23, FIGS. 25 and 26 show a mounting frame body, and FIG. 27 shows a holding plate. In this mounting example, as shown in the drawing, screw holes 7d are formed by burring at the four corners of the central recess of the mounting frame main body 7, the pressing plate 8 is overlaid on the fan 1, and the mounting hole 8b of the pressing plate 8 is removed. The screw 9 is inserted so that the fan 1 is sandwiched and fixed. 25-
In FIG. 27, 7a is a folded piece, 7b is a square hole, 7c is a mounting hole, and 8a is a square hole.

[0004]

However, in both of the above-mentioned mounting examples, when replacing a fan whose service life has expired, it is necessary to remove the pressing plates 3 and 8 which are both screwed and replace them. Particularly in the former case, since the holding plate 3 is vertically larger than the position of the fan 1, it is necessary to secure a space for removing the upper and lower screws 5 in addition to a space for removing the fan 1. Placement will be restricted. Further, in the latter case, although the extra space is not required as compared with the former case, the workability is deteriorated because the screws 9 to be used are long and the number thereof is as many as four. Further, depending on the type of the fan 1, there is a problem that it cannot be fixed by inserting the screw 9 from the front surface due to a problem in strength, and in that case, the former method must be used for mounting. As described above, the conventional mounting method has problems that an extra space is required for fan replacement and that the workability of fan replacement is poor. The present invention has been made to solve the above problems, and an object of the present invention is to provide a fan mounting frame main body that does not require an extra space and can easily replace a fan. is there.

[0005]

In order to achieve the above object, the first aspect of the present invention is to form a hat-shaped cross-section as a whole, and make flat surfaces at both ends as upper and lower mounting surfaces and form a ventilation hole in a central recess. In addition, a folding piece is extended inward of the left and right openings to form a mounting frame body, the fan is housed inside the central recess to support the top, bottom, left, and right sides of the fan, and then the holding plate is attached to the front surface. In the fan mounting frame that fixes the fan, the mounting frame main body has a slot hole formed in parallel with the fan front surface at the position where the extension surface of the fan front intersects with the fan housed, and the ventilation hole is formed in the center part Then, the tongue piece that engages with the groove hole is formed at one end thereof, and the holding plate having the contact portion with the mounting surface formed at the other end is superposed with the holding plate attached to the mounting frame main body. Penetrates the contact portion and the mounting surface Characterized by comprising a mounting hole formed in.

According to a second aspect of the present invention, the whole is formed in a hat shape in cross section, the flat portions at both ends serve as upper and lower mounting surfaces, a ventilation hole is formed in the central concave portion, and the folded piece extends inward of the left and right openings thereof. To form the mounting frame body, and accommodate the fan inside the central recess to support the top, bottom, left, right and back of the fan,
Next, in a fan mounting frame that attaches a holding plate to the front surface to fix the fan, a mounting frame having upper and lower groove holes formed in parallel with the fan front surface at a position where the extension surface of the fan front intersects with the fan housed. A main body and a holding plate having a vent hole formed in a central portion thereof, a tongue piece engaging with the upper slot hole formed at an upper end thereof, and a tongue piece engaging with the lower slot hole formed at a lower end thereof. It is characterized by In the second aspect of the invention, it is preferable that the tongue piece formed on the upper end of the pressing plate has a vertical length longer than that of the tongue piece formed on the lower end.

[0007]

In the first aspect of the invention, after the fan is housed in the fan mounting frame main body, the tongue piece at one end of the holding plate is inserted into the slot formed in the upper or lower part of the main body in parallel with the front surface of the fan. And engage. Next, the abutting portion at the other end is brought into contact with the mounting surface of the main body, and the mounting hole penetrating the abutting portion and the mounting surface is screwed to fix the pressing plate, whereby the fan is mounted. Also, when replacing the attached fan, the fan can be easily removed by removing the screw of the attachment hole and pulling out the holding plate and pulling out the tongue piece from the groove hole.

According to the second aspect of the invention, after the fan is housed in the fan mounting frame body, the tongue piece at the upper end of the holding plate is inserted into the slot formed in the upper portion of the body in parallel with the front surface of the fan. Then, the fan is attached by inserting and engaging the tongue piece at the lower end of the pressing plate into the slot formed in the lower portion of the main body in parallel with the front surface of the fan. When replacing the attached fan, pull up the holding plate once and pull out the tongue at the lower end from the lower groove hole, and then pull out the tongue at the upper end from the upper groove hole while pulling it toward you. , The fan can be easily removed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view showing a mounting example according to a first embodiment of the first invention, and FIG. 2 is a right side view of FIG. As shown in the figure, the mounting frame main body 12 is fixed to the penetrating portion of the partition wall 6 in the power conversion device by the screw 4, and the fan 1 is housed in the mounting frame main body 12 to support the upper, lower, left, right, and back surfaces. Further, the front surface is supported by a holding plate 13 which is bent and formed into a crank shape in cross section. At this time, presser plate 13
Has its upper end inserted into the slot 21 formed in the mounting frame main body 12, and has its lower end abutted against the lower mounting surface 12b of the mounting frame main body 12 and fixed by the screw 5. The slot 21
Is formed in a position parallel to the front surface of the fan at a position above the mounting frame body 12 that intersects the extension surface of the front surface of the fan in a state where the fan 1 is housed inside the mounting frame body 12.

FIG. 3 is a front view of the mounting frame main body 12 in FIG. 1, FIG. 4 is a right side view of FIG. 3, and FIG. 5 is a plan view of FIG. As shown in the figure, the mounting frame main body 12 is formed in a hat-shaped cross-section as a whole, folding pieces 14 are formed on both left and right sides of the central recess, and a central recess in which the back surface of the fan 1 abuts is formed. Square holes 15 for ventilation are formed. Further, mounting holes 16 and 17 for inserting screws are formed in the upper mounting surface 12a, and mounting holes 18 to 20 are similarly formed in the lower mounting surface 12b. Further, a slot 21 is formed in the top plate portion that supports the upper surface of the fan 1. As shown in FIG. 2, the slot 21 is formed at a position where the upper end of the holding plate 13 abutted on the front surface of the housed fan 1 is engaged.

FIG. 6 is a front view of the holding plate 13 in FIG.
FIG. 7 is a right side view of FIG. The holding plate 13 is bent and formed in a crank shape in cross section, and square holes 23 for ventilation are formed in two rows in the upper and lower direction on almost the entire central portion of the pressing plate 13 which contacts the front surface of the fan 1. Further, the lower portion is bent horizontally outward and then vertically downward so that the lower end is in contact with the lower mounting surface 12b of the mounting frame body 12 in a state where the pressing plate 13 is in contact with the front surface of the fan 1. Step is formed. The narrow portion bent downwardly serves as a mounting surface 24 and a mounting hole 25 is formed. The mounting hole 25 is overlapped with the mounting hole 19 of the mounting frame body 12 and the screw 5 is inserted therethrough. A tongue piece 26 is formed on the upper end of the pressing plate 13, and the tongue piece 26 is inserted into the slot 21 of the mounting frame body 12.

FIG. 8 shows the mounting frame main body 12 incorporating the fan 1 and the pressing plate 13 as shown in FIGS.
It is sectional drawing which shows the state attached to the partition wall 6 in a power converter device. In the figure, 27 is a heat-generating component, and 28 is a mounting component. The fan 1 sends air from the left side of the partition wall 6 to the right direction to cool the heat generating component 27. Here, the mounting part 28
Although it is located in front of the fan 1, it is located above the upper surface of the fan 1 and its lower part is open, so that the screw 5 can be removed from the front to replace the fan 1.
As a result, the space in the front upper part of the fan 1 can be arranged and used effectively. Depending on the arrangement of components in the power converter, the mounting frame body 12 may be mounted upside down or sideways.

Next, an embodiment of the second invention will be described. 9 is a front view showing a mounting example according to a second embodiment of the second invention, and FIG. 10 is a right side view of FIG. As shown in the figure, the mounting frame main body 32 is fixed to the penetrating portion of the partition wall 6 in the power conversion device by the screw 4, and the fan 1 is housed in the mounting frame main body 32 to support the upper, lower, left, right, and back surfaces. Further, the front surface is supported by the pressing plate 33. The pressing plate 33 is supported and fixed by inserting its upper and lower ends into groove holes formed in the upper and lower parts of the mounting frame main body 32. Specifically, the tongue piece 44 at the upper end of the pressing plate 33 is first inserted into the upper slot 40, and the tongue piece 45 at the lower end is then inserted into the lower slot 41. The slots 40, 41
Is also formed parallel to the front surface of the fan at a position that intersects with the extension surface of the front surface of the fan.

FIG. 11 is a front view of the mounting frame main body 32 in FIG. 9, FIG. 12 is a right side view of FIG. 11, and FIG.
1 is a plan view and FIG. 14 is a bottom view of FIG. 11. As shown in the figure, the mounting frame main body 32 is formed in a hat-shaped cross-section as a whole, folding pieces 34 are formed on both left and right sides of the central concave portion, and the rear portion of the fan 1 is in contact with the central concave portion. A square hole 35 for ventilation is formed. Further, the mounting holes 36 to 39 are formed in the upper mounting surface 32a and the lower mounting surface 32b.
Are formed. Further, a groove 40 is formed in a top plate portion that supports the upper surface of the fan 1, and a groove hole 41 is formed in a bottom plate portion that also supports the lower surface. This slot 40, 41
As shown in FIG. 10, is formed at a position where the upper and lower ends of the holding plate 33, which is in contact with the front surface of the housed fan 1, are engaged with each other.

FIG. 15 is a front view of the holding plate 33 in FIG. 9, and FIG. 16 is a right side view of FIG. The holding plate 33 is a flat plate, and square holes 43 for ventilation are formed in upper and lower two rows on almost the entire central portion of the pressing plate 33 that contacts the front surface of the fan 1. In addition, the tongue piece 4 that engages with the groove holes 40 and 41 of the mounting frame body 32 in a state where the pressing plate 33 is in contact with the front surface of the fan 1.
4, 45 are formed on the upper and lower ends of the holding plate 33. The tongue piece 44 is formed longer than the tongue piece 45. Now, let B be the vertical length of the central portion of the presser plate 33 and C and D (see FIG. 15) be the lengths of the tongues 44 and 45, respectively.
Further, assuming that the height of the portion of the mounting frame body 32 that houses the fan 1 is A (see FIG. 12), the relationship between the dimensions is A> B
+ D, A <B + C.

FIG. 17 shows the fan 1 as shown in FIGS.
It is sectional drawing which shows the state which actually attached the attachment frame main body 32 incorporating the holding plate 33 to the partition wall 6 in an electric power converter. 27 in the figure is a heat generating component, and 28, 29.
Is a mounting part. The fan 1 sends air from the left side of the partition wall 6 to the right direction to cool the heat generating component 27. Here, the mounting part 28 located in front of the fan 1 is located above the upper surface of the fan 1, and similarly, the mounting part 29 is the same as the mounting part 29.
It is located below the lower surface of the. Therefore, the mounting part 2
It is possible to replace the fan 1 from the front by utilizing the space between the 8 and the attachment part 29. As a result, in the front of the fan 1, it is possible to effectively use the space excluding the portion through which the fan passes when the fan is replaced, for arranging the parts. Further, when replacing the fan, the pressing plate 33 can be removed and attached with one touch without using screws, so that the replacement work is simplified.

[0017]

As described above, according to the first invention,
By inserting one end of the holding plate into the slot of the mounting frame body and screwing the other end to the mounting frame body to fix the fan, remove the screw at the other end of the holding plate when replacing the fan, and The fan can be replaced with a simple operation that only requires attachment.

According to the second invention, the upper end of the pressing plate is inserted into the upper slot of the mounting frame body, and the other end is inserted into the lower slot of the mounting frame body to fix the fan. , When replacing the fan, the pressing plate can be attached and removed by simply moving the pressing plate up and down, which simplifies the fan replacement work. Moreover, the space required for this is the minimum that allows the fan to pass, and the space in the device can be effectively utilized accordingly.

[Brief description of drawings]

FIG. 1 is a front view showing a mounting example of a first embodiment according to the first invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a front view showing the mounting frame main body of FIG.

FIG. 4 is a right side view of FIG.

FIG. 5 is a plan view of FIG.

6 is a front view showing the holding plate of FIG. 1. FIG.

FIG. 7 is a right side view of FIG.

FIG. 8 is a sectional view showing an example of attachment of the first embodiment.

FIG. 9 is a front view showing a mounting example of a second embodiment according to the second invention.

FIG. 10 is a right side view of FIG.

FIG. 11 is a front view showing the mounting frame main body of FIG. 9.

FIG. 12 is a right side view of FIG. 11.

13 is a plan view of FIG. 11. FIG.

FIG. 14 is a bottom view of FIG. 11.

FIG. 15 is a front view showing the holding plate of FIG. 9.

16 is a right side view of FIG.

FIG. 17 is a cross-sectional view showing a mounting example of the second embodiment.

FIG. 18 is a diagram showing a mounting example of a conventional fan.

19 is a right side view of FIG. 18. FIG.

20 is a front view showing the mounting frame main body of FIG. 18. FIG.

21 is a right side view of FIG. 20. FIG.

22 is a plan view showing the holding plate of FIG. 18. FIG.

FIG. 23 is a diagram showing another example of conventional fan attachment.

FIG. 24 is a right side view of FIG. 23.

FIG. 25 is a front view showing the mounting frame main body of FIG. 23.

FIG. 26 is a right side view of FIG. 25.

FIG. 27 is a plan view showing the holding plate of FIG. 23.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fan 4,5 Screw 6 Partition wall 12 Mounting frame body 12a Upper mounting surface 12b Lower mounting surface 13 Holding plate 14 Folding piece 15 Square hole 16 to 20 Mounting hole 21 Groove hole 23 Square hole 24 Mounting surface 25 Mounting hole 26 Tongue piece 27 Heat generating parts 28, 29 Mounting parts 32 Mounting frame body 33 Holding plate 34 Folding piece 35 Square hole 32a Upper mounting surface 32b Lower mounting surface 36-39 Screw hole 40, 41 Groove hole 43 Square hole 44, 45 Tongue piece

Claims (3)

[Claims] 1. A mounting frame having a hat-shaped cross section as a whole, flat surfaces at both ends serving as upper and lower mounting surfaces, a vent hole formed in a central concave portion, and folding pieces extending inward of left and right openings thereof. A fan mounting frame that forms a main body, stores the fan inside the central recess, supports the top, bottom, left, right, and back of the fan, and then attaches a holding plate to the front to fix the fan. A mounting frame main body having a groove hole formed in parallel with the fan front surface at a position where the extension surface of the front surface intersects, a ventilation hole is formed in the central portion, and a tongue piece engaging with the groove hole is formed at one end thereof. A holding plate having a contact portion with the mounting surface formed at the other end, and a mounting hole formed by penetrating the contact portion and the mounting surface that overlap when the holding plate is mounted on the mounting frame body. , Characterized by Mounting frame. 2. A mounting frame having a hat-shaped cross section as a whole, flat surfaces at both ends serving as upper and lower mounting surfaces, a vent hole formed in a central recess, and folding pieces extending inward of the left and right openings of the mounting frame. A fan mounting frame that forms a main body, stores the fan inside the central recess, supports the top, bottom, left, right, and back of the fan, and then attaches a holding plate to the front to fix the fan. A mounting frame body having upper and lower groove holes formed in parallel with the fan front surface at positions where extension surfaces of the front surface intersect with each other, and a tongue piece having a vent hole formed in a central portion and engaging with the upper groove hole at an upper end thereof. And a pressing plate having a tongue piece formed at the lower end to engage with the lower groove hole, and a fan mounting frame. 3. The fan mounting frame according to claim 2, wherein the tongue piece formed at the upper end of the holding plate has a vertical length longer than that of the tongue piece formed at the lower end.