JP5001896B2 - Cooling fan mounting structure - Google Patents

Description

  The present invention relates to a cooling fan mounting structure for forcibly cooling an electric device, and more particularly to a cooling fan mounting structure mounted on a mounting rail.

As a conventional cooling fan mounting structure, for example, Japanese Unexamined Patent Application Publication No. 6-180170 is known.
In Patent Document 1, a cooling fan is attached to an electric device using an L-shaped mounting bracket and a screw.
By the way, in a control panel in which a large number of electrical devices for supplying and controlling power to FA devices, production facilities, etc. are mounted in a metal casing, the electrical devices are mounted using mounting rails called so-called DIN rails. There are many cases. The DIN rail is a rail whose dimensions are determined by German industrial standards and is a global standard.
JP-A-6-180170

However, in such a conventional cooling fan mounting structure, it is necessary to mount the cooling fan at an appropriate angle in order to send wind effectively when cooling the electrical equipment. The mounting position is important. For this reason, conventionally, a screw hole has to be provided on the side where the cooling fan is attached, that is, the frame of the electric device, and therefore, there is a problem that it cannot be attached to the DIN rail.
There is also a problem that the position and direction of the cooling fan cannot be arbitrarily changed.

  The present invention solves the above-described problems, can arbitrarily change the position and direction of the cooling fan, and can install the cooling fan easily without opening a screw hole in the mounting rail. The purpose is to provide a structure.

In order to solve the above problems, the present invention provides a cooling device in which a mounting member is fastened to one of mounting holes formed in a fan frame of a cooling fan, and the cooling fan is attached to the mounting rail via the mounting member. In the fan mounting structure, a first structural member for fastening the mounting member to a mounting hole formed in a fan frame of the cooling fan, and a second structural member assembled to a mounting rail for mounting the cooling fan. Comprising, fastening the first structural member and the second structural member with fastening means,
The second structural member has a mating surface with the first structural member, and has a planar portion on which the fastening means is mounted, and an engagement provided on both sides of the planar portion and assembled to the mounting rail. And claw portions that engage the upper and lower ends of the mounting rail at both ends of the engaging groove, and the mounting rail is connected to the mounting rail via the engaging groove. In addition to assembling the second structural member, the pressing member for engaging the claw portions at both ends of the engagement groove with the flange portion of the mounting rail is mounted on the second structural member .
Further, the present invention resides in that the first structural member and the second structural member are configured to be rotatable around the fastening means.
Furthermore, in the present invention, a convex portion is formed on one of the mating surfaces of the first structural member and the second structural member, and a concave portion is formed on the other, and the concave and convex portions are combined to form the first structure. By fastening the member and the second structural member with fastening means, the first structural member and the second structural member are fixed in a non-rotatable manner.
Further, according to the present invention, the engaging groove provided in the second structural member forms a notch portion having a fixed length in the longitudinal direction at the edge of both side surface portions of the second structural member. This is because the engaging recesses are formed at the upper and lower ends of the notch, and the claw portion is configured by the open ends of the engaging recesses.
Furthermore, the present invention lies in that a slope is formed on any one of the engagement recesses so that the bottom surface of the engagement recess gradually becomes shallower from the back toward the opening end side.
Furthermore, the present invention lies in that the slope of the engaging recess is formed as a curved surface that is raised in the middle in a side view.
According to the present invention, the pressing member is configured by screwing a tightening screw into a screw hole formed in the flat portion of the second structural member, and the tightening screw is used as the mounting rail. The flange portion is pressed between the inner wall surface of the claw portion and the tip of the tightening screw.
Further, according to the present invention, the first structural member includes a flat portion, a side portion provided so as to be U-shaped on both sides of the flat portion, and a pair of each extending in the front-back oblique direction of the side portion. The pair of arm portions are configured to be fastened to adjacent mounting holes formed in the fan frame of the cooling fan by fastening members.
According to the present invention, the mounting member is composed of a first structural member integrally formed with a fan frame of a cooling fan, and a second structural member assembled to a mounting rail for mounting the cooling fan. The first structural member and the second structural member are fastened by fastening means, and are configured to be rotatable around the fastening means.

According to the present invention, the following effects can be obtained.
According to the invention of claim 1, the first structural member for fastening the mounting member to the mounting hole formed in the fan frame of the cooling fan, and the second structural member assembled to the mounting rail for mounting the cooling fan. Therefore, the first structural member and the second structural member can be easily fastened by the fastening means.
According to the invention of claim 2, since the first structural member and the second structural member are configured to be rotatable around the fastening means, the angle of the cooling fan can be easily changed.
According to the third aspect of the present invention, the convex portion is formed on one of the mating surfaces of the first structural member and the second structural member, and the concave portion is formed on the other. By fastening the first structural member and the second structural member, rotation of the first structural member and the second structural member can be prevented. Thereby, it is possible to obtain a cooling fan mounting structure in which the set direction of the cooling fan can be more firmly fixed.
According to the invention of claim 4, the second structural member is assembled to the mounting rail via the engaging groove, and at both ends of the engaging groove engaged with the upper and lower ends of the mounting rail. Since the pressing member that presses the claw portion against the flange portion of the mounting rail is attached to the second structural member, the flange portion of the mounting rail is moved to the claw at both ends of the engaging groove by tightening the pressing member. It can be clamped and fixed between the part and the tip of the pressing member.
According to the invention of claim 5, the engaging groove is formed with a notch portion having a fixed length in the longitudinal direction at the edge portion of the both side surface portions of the second structural member, and is formed at the upper and lower end portions of the notch portion. Since each of the engaging recesses is formed and the claw portion is formed by the opening end portions of these engaging recesses, the upper and lower flange portions of the mounting rail can be supported by the engaging recesses. There is no fear that the second structural member is detached.
According to the invention of claim 6, since the slope is formed in one of the engagement recesses so that the bottom surface of the engagement recess gradually becomes shallower from the back toward the opening end side, the pressing member is tightened. As a result, the one-side flange portion of the mounting rail moves along the slope to the shallow position of the engaging groove and is locked to the claw portion on the opening end side, and the other-side flange portion of the mounting rail is engaged with the engaging groove. Since the positioning is performed at a deep position, the second structural member can be reliably fixed to the flange portion of the mounting rail.
According to the invention of claim 7, since the slope of the engaging recess is formed in a curved surface that is raised in the middle in a side view, the one-side flange portion of the mounting rail is located at a shallow position of the engaging groove along the curved surface. And the second structural member can be guided to the optimum position of the engaging recess.
According to the invention of claim 8, the pressing member is constituted by screwing a tightening screw into a screw hole formed in the flat portion of the second structural member, and the tightening screw is attached to the mounting member. Since the flange portion is pressed against the flange portion of the rail, and the flange portion is sandwiched between the inner wall surface of the claw portion and the tip of the fastening screw, the second structural member can be securely fixed to the mounting rail.
According to the invention of claim 9, the first structural member includes a flat portion, side portions provided so as to be U-shaped on both sides of the flat portion, and extending in the front-rear oblique direction of the side portion. A pair of arm portions, and each of the pair of arm portions are fastened to adjacent mounting holes formed in the fan frame of the cooling fan by fastening members, so that the first structural member is cooled. It can be securely fixed to the fan frame of the fan.
According to the invention of claim 10, the mounting member is constituted by a first structural member integrally formed with the fan frame of the cooling fan, and a second structural member assembled to the mounting rail for mounting the cooling fan. Since the first structural member and the second structural member are fastened by the fastening means and are configured to be rotatable around the fastening means, the first structural member and the second structural member are fastened by the fastening means. The angle of the cooling fan can be easily changed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 3 are perspective views showing a cooling fan mounting structure, FIG. 4 is a side view showing a second structural member attached to a mounting rail, and FIG. 5 is a partially enlarged view of FIG.

  1 to 3, reference numeral 10 denotes a cooling fan, which includes a fan main body 12 having a fan motor 11 and a fan frame 13 that supports the fan main body 12 on a central axis. The fan frame 13 has axial mounting holes 15 formed at the four corners of a rectangular frame 14, and mounting members 20 are attached to the mounting holes 15 via mounting screws 16 as fastening members.

  The mounting member 20 includes a first structural member 30 fastened to a mounting hole 15 formed in the fan frame 13 of the cooling fan 10, and a mounting rail for mounting the cooling fan 10 as shown in FIGS. The first structural member 30 and the second structural member 40 are fastened with screws 61 as fastening means 60. Further, the second structural member 40 is attached to a so-called DIN rail 51 as the attachment rail 50 via a fixing member 70.

  The first structural member 30 includes a plane portion 31 formed to have a width substantially corresponding to the thickness of the cooling fan 10, and side portions 32A provided on both sides of the plane portion 31 so as to be substantially U-shaped. 32B and a pair of arm portions 32a1, 32a2 and 32b1, 32b2 extending at a certain angle in the front-rear oblique direction of the side surfaces 32A, 32B, respectively. A mounting hole 33 is formed at the tip. The mounting screw 16 is inserted into the mounting hole 33 and fastened to the mounting hole 15 formed in the fan frame 13 of the cooling fan 10. Bending portions 32c1, 32c2, and 32d1, 32d2 bent in a direction approaching each other are provided on one end of the pair of arm portions 32a1, 32a2, and 32b1, 32b2, and these bending portions 32c1, 32c2, and 32d1, The both end surfaces of the fan frame 13 of the cooling fan 10 are locked by 32d2. That is, both end surfaces of the one side plate surface 13a of the fan frame 13 of the cooling fan 10 are locked between the bent portions 32c1 and 32c2. Further, both end surfaces of the one-side plate surface 13b of the fan frame 13 of the cooling fan 10 are locked between the bent portions 32d1 and 32d2.

As shown in FIG. 6, a mounting hole 34 is formed at the center position in the flat portion 31 of the first structural member 30, and four semicircular protrusions are provided around the mounting hole 34 in the vertical and horizontal directions. A portion 35 is formed.
On the other hand, the second structural member 40 is a mating surface with the first structural member 30, and is provided with a flat portion 41 on which the fastening means 60 is mounted, and on both sides of the flat portion 41, and the mounting rail 50, and both side surface portions 43 formed with engaging grooves 42 to be assembled to 50. The second structural member 40 is provided with claw portions 42a and 42b at both ends of the engaging groove 42, and the second structural member 40 is assembled to the mounting rail 50 via the engaging groove 42. It has been.

As shown in FIGS. 4 and 5, the engagement groove 42 provided in the second structural member 40 is cut at a certain length in the longitudinal direction at the edges of the side surface portions 43 of the second structural member 40. A notch is formed, and engaging recesses 44 and 45 are formed on the upper and lower ends of the notch, respectively. The claw portions 42a and 42b are formed on the opening end sides of the engaging recesses 44 and 45, respectively. Is formed. The engagement recess 44 on the upper side has a bottom surface 44a formed in a substantially circular curved shape. The substantially circular curved surface shape is formed so as to draw a circle with a radius having the same dimension as the thickness dimension of the flange portion 50a of the mounting rail 50, for example. A slope 44b is formed from the bottom surface 44a to the inner wall surface 42c1 of the engagement groove 42. The lower engaging recess 45 is formed on a slope 45b where the depth of the engaging recess 45 gradually decreases from the bottom surface 45a of the engaging recess 45 toward the claw portion 42b.
The bottom surface 42c2 of the engagement groove 42 provided with the engagement recess 45 is deeper from the opening end side of the engagement groove 42 than the bottom surface 42c1 on the side provided with the engagement recess 44. Is formed. The slope 45b is formed in a convex shape with an intermediate portion protruding.

  In the second structural member 40, a screw hole 46 is formed on one side of the flat portion 41 sandwiched between both side surface portions 43 so as to be sandwiched between the engagement grooves 42, and the second structural member 40 is fixed to the screw hole 46. Screws 71 as members 70 are attached. The screw 71 abuts against the plate surface of the flange portion 50a of the mounting rail 50 and presses the flange portion 50a of the mounting rail 50 toward the claw portion 42b. A screw hole 47 is formed on the other side of the flat portion 41, and the screw hole 47 is formed in the flat portion 31 of the first structural member 30 at regular intervals around the screw hole 47 as shown in FIG. A recess 48 that engages with the protrusion 35 is provided opposite the protrusion 35. The number of the recesses 48 is set to be a multiple of the protrusions 35 (in the illustrated example, the recesses 48 are formed every 45 °), and the mounting angle of the first structural member 30 is set to the second angle. The structural member 40 is configured to be changed. In the illustrated example, holes are used as the recesses 48 at regular intervals. However, recesses may be formed and used as the recesses 48.

Next, a procedure for mounting the cooling fan 10 to the mounting rail 50 will be described.
First, the attachment member 20 is assembled to the fan frame 13 of the cooling fan 10 via the first structural member 30. The first structural member 30 has a pair of arm portions 32a1, 32a2 and 32b1, 32b2 assembled to the fan frame 13 of the cooling fan 10, and the arm portion is attached to the mounting hole 15 formed in the fan frame 13 of the cooling fan 10. The attachment holes 16 formed at the tip ends of 32a1, 32a2 and 32b1, 32b2 are aligned and the attachment screw 16 is inserted and fastened.
At this time, both end surfaces of the fan frame 13 of the cooling fan 10 are locked by the bent portions 32c1, 32c2, and 32d1, 32d2 provided at the tips of the arm portions 32a1, 32a2 and 32b1, 32b2 of the first structural member 30.

  Next, the mounting member 20 is assembled to the mounting rail 50 via the second structural member 40. The second structural member 40 is assembled by hooking the engaging grooves 42 of the side surface portions 43 on the mounting rails 50. When assembling, the engaging recess 45 on the lower side of the engaging groove 42 is hooked on the flange portion 50 a on the lower side of the mounting rail 50, and then the engaging recess 44 on the upper side of the engaging groove 42 is attached to the mounting rail 50. Is hooked on the upper flange portion 50a. Then, the screw 71 as the fixing member 70 is tightened to press the lower flange portion 50 a of the mounting rail 50. Accordingly, the flange portion 50a on the lower side of the mounting rail 50 is engaged with the claw portion 42b while being moved forward and upward along the slope 45b formed in the engagement recess 45 on the lower side. The concave portion 45 is fastened and fixed at the shallowest position. At this time, the flange portion 50a on the upper side of the mounting rail 50 moves into the engagement recess 44 on the upper side, and is positioned at the innermost position in the bottom surface 44a formed in a substantially circular curved surface shape. Thus, the second structural member 40 is assembled to the mounting rail 50. Then, the direction of the cooling fan 10 is adjusted to the direction of the electronic control device to be cooled. To adjust the direction of the cooling fan 10, the screw of the fastening means 60 is loosened to change the position of the recess 48 engaged with the protrusion 35, and the first structural member 30 is moved relative to the second structural member 40. The direction of the cooling fan 10 is adjusted by rotating.

According to the above embodiment, the following effects can be achieved.
Since the mounting member 20 can be assembled only by tightening the screw 71 as the fixing member 70 via the second structural member 40 to the mounting rail 50, the assembly is easy and the work efficiency is improved. be able to. Further, since the first structural member 30 and the second structural member 40 are merely fastened with the screws 61 as the fastening means 60, the direction of the cooling fan 10 can be easily changed by simply loosening the screws 61 and rotating them together. Can be adjusted. At this time, the direction of the cooling fan 10 can be adjusted to an arbitrary angle by rotating the protrusion 35 and changing the recess 48 engaged with the protrusion 35. By simply tightening the screw 71 as the fixing member 70 and pressing the lower flange portion 50a of the mounting rail 50, the lower flange portion 50a of the mounting rail 50 is formed in the lower engaging recess 45. While being moved forward and upward along the curved slope 45b, it is locked to the claw portion 42b and fastened and fixed at the shallowest position of the engagement recess 45, and the upper flange portion 50a is engaged with the upper engagement portion 45b. Since it moves into the concave portion 44 and is positioned at the deepest position in the bottom surface 44a formed in a substantially circular curved surface shape, it automatically slides to the optimum position for locking and is attached to the cooling fan without any play. A structure can be obtained.

  In addition, this invention is not limited only to the said embodiment, For example, as a cooling fan assembled | attached to the mounting rail, various cooling fans can be used, and the 1st structural member and the 2nd As long as the structural member is fastened, the fastening means is not limited to screws and bolts, and various types can be used. Further, the structure of the upper side engaging recess 44 and the lower side engaging recess 45 is not limited to the structure of the above embodiment, and can prevent rattling of the upper and lower flange portions 50a of the mounting rail 50. Other structures can also be employed. Further, as the mounting rail 50, the DIN rail 51 is used in the above embodiment. However, as long as it is a long and thin plate-like rail, it is applicable not only to the DIN rail 51 but also to other standard rails. Is also possible. In the above embodiment, the first structural member 30 is fastened to the mounting hole 15 of the fan frame 13 of the cooling fan 10 via the mounting screw 16, but the first structural member 30 is integrated with the fan frame 13 in advance. It is also possible to configure. In addition, it cannot be overemphasized that it can change suitably and can implement within the range which does not change the gist of the present invention.

It is a perspective view which shows the attachment structure of the cooling fan by embodiment of this invention. It is a perspective view which shows the attachment structure of the cooling fan by embodiment of this invention which changed the direction of the cooling fan of FIG. It is a perspective view which shows the attachment structure of the cooling fan by embodiment of this invention which changed the direction of the cooling fan of FIG. FIG. 4 is a side view showing the second structural member attached to the mounting rail. FIG. 5 is a partially enlarged view of FIG. 4. It is a front view which shows the 1st structural member of an attachment member. It is a front view which shows the 2nd structural member of an attachment member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cooling fan 11 Fan motor 12 Fan main body 13 Fan frame 14 Frame 15 Attachment hole 16 Attachment screw 20 Attachment member 30 1st structural member 31 Planar part 34 Attachment hole 35 Projection part 40 2nd structural member 41 Plane part 42 Engagement Joint groove 42a, 42b Claw part 44, 45 Engaging recess 44a Bottom 45b Slope 48 Recess 50 Mounting rail 50a Flange 51 DIN rail 60 Fastening means 61 Screw 70 Fixing member

Claims (9)

In the mounting structure of the cooling fan, the mounting member is fastened to any of the mounting holes formed in the fan frame of the cooling fan, and the cooling fan is attached to the mounting rail via the mounting member. A first structural member fastened to a mounting hole formed in a fan frame of the cooling fan and a second structural member assembled to a mounting rail for mounting the cooling fan, the first structural member and the first structural member Fasten the two structural members with fastening means,
The second structural member has a mating surface with the first structural member, and has a planar portion on which the fastening means is mounted, and an engagement provided on both sides of the planar portion and assembled to the mounting rail. And claw portions that engage the upper and lower ends of the mounting rail at both ends of the engaging groove, and the mounting rail is connected to the mounting rail via the engaging groove. And a pressing member that engages the claw portions at both ends of the engaging groove with the flange portion of the mounting rail is mounted on the second structural member. Fan mounting structure.   2. The cooling fan mounting structure according to claim 1, wherein the first structural member and the second structural member are configured to be rotatable around the fastening means.   A convex portion is formed on one of the mating surfaces of the first structural member and the second structural member, and a concave portion is formed on the other, and these concave and convex portions are combined to form the first structural member and the second structure. 3. The cooling fan mounting structure according to claim 2, wherein the first structural member and the second structural member are fixed in a non-rotatable manner by fastening the members with fastening means. The engaging grooves provided in the second structural member form notches with a fixed length in the longitudinal direction at the edges of both side surfaces of the second structural member, and upper and lower ends of the notched portions. mounting structure of a cooling fan of claim 1, wherein each engagement recess formed is configured, characterized in that constitutes the pawl portion at the open end of the engaging recess. The cooling fan mounting structure according to claim 4 , wherein a slope is formed on any one of the engagement recesses so that the bottom surface of the engagement recess gradually becomes shallower from the back toward the opening end side. . The cooling fan mounting structure according to claim 5 , wherein the slope of the engaging recess is formed as a curved surface that rises in the middle in a side view. The pressing member is configured by screwing a tightening screw into a screw hole formed in the flat surface portion of the second structural member, and pressing the tightening screw against the flange portion of the mounting rail. The cooling fan mounting structure according to claim 6 , wherein the flange portion is sandwiched between the inner wall surface of the claw portion and the tip of the tightening screw. The first structural member includes a flat portion, side portions provided so as to be U-shaped on both sides of the flat portion, and a pair of arm portions extending in the front-rear direction of the side portion. these each pair of arms, said the mounting holes adjacent phases formed fan frame of the cooling fan, according to any one of claims 1 to 7, characterized in that fastened on each fastening member Mounting structure for cooling fan. The mounting member is composed of a first structural member configured integrally with a fan frame of a cooling fan, and a second structural member assembled to a mounting rail for mounting the cooling fan, and the first structure The cooling fan mounting structure according to claim 1 , wherein the member and the second structural member are fastened by fastening means, and are configured to be rotatable around the fastening means.

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